Date   

Re: Es Hail 2 LNB Antidrift

Simon Brown
 

Hi,

 

If you look at the Es’Hail 2 status (or status for any GEO satellite) you’ll see it does actually orbit. At 10GHz this can have as much as 50Hz offset I think, right now it’s 25Hz offset at 10GHz.

 

More info: https://en.wikipedia.org/wiki/Geosynchronous_orbit

 

Below is the latest Es’Hail 2 status.

 

 

 

Simon Brown, G4ELI
www.sdr-radio.com

 

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Mr VILLAIN Laurent
Sent: 27 December 2018 10:59
To: main@sdr-radio.groups.io; main@sdr-radio.groups.io
Subject: Re: [SDR-Radio] Es Hail 2 LNB Antidrift

 

"There will be some Doppler even though Es’Hail 2 is a GEO satellite " => could you explain it ???

 

73 Laurent.

 


De : main@sdr-radio.groups.io de la part de Klaus Hutschenreuther <klaus.hutschenreuther@...>
Envoyé : jeudi, décembre 27, 2018 7:46 PM
À : main@sdr-radio.groups.io
Objet : Re: [SDR-Radio] Es Hail 2 LNB Antidrift

 

Hi,

 

You can take a look at the following:

 

https://loetlabor-jena.de/doku.php?id=projekte:3cmplllnb:start

 

http://www.dg0opk.darc.de/Octagon_LNB_mod_March2017.html

 

Klaus Hutschenreuther

 

Von: main@SDR-Radio.groups.io [mailto:main@SDR-Radio.groups.io] Im Auftrag von Simon Brown
Gesendet: Donnerstag, 27. Dezember 2018 09:55
An: main@SDR-Radio.groups.io
Betreff: Re: [SDR-Radio] Es Hail 2 LNB Antidrift

 

Hi,

 

The answer is no. I’ll be on Es’Hail 2 myself, so will look at the LNB issue once I have a dish and LNB organised. There will be some Doppler even though Es’Hail 2 is a GEO satellite.

 

As soon as Es’Hail 2 has been commissioned I’ll get a dish ordered and look at this issue.

 

Simon Brown, G4ELI
www.sdr-radio.com

 

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of floroy42@...
Sent: 26 December 2018 14:20
To: main@SDR-Radio.groups.io
Subject: [SDR-Radio] Es Hail 2 LNB Antidrift

 

Hello OMs,

it is possible with SDR Radio to lock on a signal (like AFC with FM) and receive with an second VFO another signal in USB which follows the lock on the first signal?

The problem is that the used LNBs for reception of EsHail2 Sat often drift several 100Hz in a few minutes.

On the narrow band HAM transponder two frequency-stable beacons are planned on the lower and upper band edge.

If you can lock to one of these beacons und demodulate any SSB signal between those following the drift of the beacons you won't have to retune every few seconds.

Anyone an idea?

vy73 DB8TF

Attachments:


Re: Es Hail 2 LNB Antidrift

Matthias Bopp
 

That looks pretty impressive, congratulations

 

Matthias

 

 

Von: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> Im Auftrag von floroy42@...
Gesendet: Donnerstag, 27. Dezember 2018 19:29
An: main@SDR-Radio.groups.io
Betreff: Re: [SDR-Radio] Es Hail 2 LNB Antidrift

 

Here is my actual measurement of the SW correction solution:

vy73 DB8TF


Re: Es Hail 2 LNB Antidrift

floroy42@...
 

Here is my actual measurement of the SW correction solution:

vy73 DB8TF


Re: Es Hail 2 LNB Antidrift

Klaus Hutschenreuther <klaus.hutschenreuther@...>
 

HI,

 

 

RX:

Down-Converter AMSAT P4-A

Kuhne electronic

https://shop.kuhne-electronic.de/kuhne/de/shop/neu/MKU+LNC+10+OSCAR+P4A/?card=1831

 

MKU LNC 10 OSCAR P4-A
10489 ... 10500 MHz
Low noise down converter with feed horn

·       1129 MHz ... 1140 MHz

·       Low frequency drift due to TCXO

·       Mountable with standard LNB peg

·        

 

 

TX:

Es’hail-2-Up-link 2400-MHz-RADOM-Helixantenne, 22dBi für 198€

-          Voraussichtlich ab Februar 2019

 Shop: www.anjo-antennen.de  

 

Klaus Hutschenreuther

 

 

Von: main@SDR-Radio.groups.io [mailto:main@SDR-Radio.groups.io] Im Auftrag von Mr VILLAIN Laurent
Gesendet: Donnerstag, 27. Dezember 2018 12:42
An: main@sdr-radio.groups.io; main@sdr-radio.groups.io
Betreff: Re: [SDR-Radio] Es Hail 2 LNB Antidrift

 

Fully agree with you Matthias.

 

 


De : main@sdr-radio.groups.io de la part de Matthias Bopp <matthias.bopp@...>
Envoyé : jeudi, décembre 27, 2018 8:39 PM
À : main@sdr-radio.groups.io
Objet : Re: [SDR-Radio] Es Hail 2 LNB Antidrift

 

Hi Laurant,

 

I understand but when already building an external reference circuit to generate the 27 MHz why not chose another reference to move the IF higher

and have higher overall gain. Also if you move the IF beyond 950 MHz you can use common DVB-S2 receivers. The effort is basically the same.

 

At the same time you can have an addition feature: if you chose for instance 26,03076923 MHz you get a LO frequency of 9400 MHz.

Thus you can tune your receiver easily as the last digits of your tuned frequency are the same:

for instance RF=10489,952 MHz will result in an IF=1089,952 MHz.

 

That might be only useful with analogue receivers as with SDRs you can typically adjust the frequency offset easily.

 

Anyhow, there are apparently many ways to Rome …

 

Have a nice day

 

Matthias

 

www.dd1us.de

 

 

 

Von: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io>Im Auftrag von Mr VILLAIN Laurent
Gesendet: Donnerstag, 27. Dezember 2018 12:04
An: main@sdr-radio.groups.io; main@sdr-radio.groups.io
Betreff: Re: [SDR-Radio] Es Hail 2 LNB Antidrift

 

Matthias,

 

The 27 MHz is locked on the GPS signal ( VCTCXO ) and re-injected to replace the 27 MHz crystal, only re-injected on one pin of PLL chip.

 

73 Laurent.

 


De :main@sdr-radio.groups.io de la part de Matthias Bopp <matthias.bopp@...>
Envoyé : jeudi, décembre 27, 2018 8:01 PM
À : main@sdr-radio.groups.io
Objet : Re: [SDR-Radio] Es Hail 2 LNB Antidrift

 

Hi Laurant,

 

I am presently modifying another LNB and will lock it to a GSPDO or Rubidum (both are available here).

 

What I do not understand in the approach from Loetlabor Jena is why they still stick to the 27 MHz reference.

 

I have  10 MHz to 26,03076923 MHz PLL converter built by DF9NP for me which I will use.

 

This moves the IF band higher and normal SAT-RX can be used and also most SDRs for narrowband.

 

Best regards

 

Matthias

 

 

 

Von:main@SDR-Radio.groups.io <main@SDR-Radio.groups.io>Im Auftrag vonMr VILLAIN Laurent
Gesendet: Donnerstag, 27. Dezember 2018 11:52
An: main@sdr-radio.groups.io;main@sdr-radio.groups.io
Betreff: Re: [SDR-Radio] Es Hail 2 LNB Antidrift

 

Hello Matthias 73.

 

 

 

Did you check RF filter response too ?

 

DL3YC modification, LNB fully locked on GPS.

 

 

 


De :main@sdr-radio.groups.io de la part de Matthias Bopp <matthias.bopp@...>
Envoyé : jeudi, décembre 27, 2018 7:41 PM
À : main@sdr-radio.groups.io
Objet : Re: [SDR-Radio] Es Hail 2 LNB Antidrift

 

Hi Laurant,

 

As you have requested here is a spectrum sweep of a unmodified dual Octagon PLL LNB. LO was 9750 Mhz.

 

As you can see the gain at 600 MHz drops by about 5dB (roughly).

 

I assume this is the frequency response of the IF chain and as the LNB has plenty of gain I don’t think it is a real problem.

 

It is different if the frequency response (high pass characteristic) is based on the amplifiers in front of the mixer as then total system noise figure should be impacted.

 

Nevertheless I changed the reference of my LNB to move the IF signals up above 1 GHz and also use a TCXO.

 

Here is a description of the modification I made:

 

https://www.dropbox.com/s/bp61phg1e2vihun/Feed%20fuer%20EsHail-2%200v3.pdf?dl=0

 

Best regards

 

Matthias

 

 

Von:main@SDR-Radio.groups.io <main@SDR-Radio.groups.io>Im Auftrag vonMr VILLAIN Laurent
Gesendet: Donnerstag, 27. Dezember 2018 11:20
An: main@sdr-radio.groups.io;main@sdr-radio.groups.io
Betreff: Re: [SDR-Radio] Es Hail 2 LNB Antidrift

 

The best solution for SSB is DL3YC idea.

 

You could see on his blog. Its the optimal one.

 

In all cases your 0,5 ppm TCXO's or crystals will be under the GPS signal in all cases.

 

Without modification of LNB, you will lost IF gain too, if not, lets share a spectrum capture.

 

Warm 73, no fight, just discuss. Laurent.

 


De :main@sdr-radio.groups.io de la part de Mr VILLAIN Laurent <f4aar@...>
Envoyé : jeudi, décembre 27, 2018 7:07 PM
À : main@sdr-radio.groups.io;main@sdr-radio.groups.io
Objet : Re: [SDR-Radio] Es Hail 2 LNB Antidrift

 

No fight, just discussion. Hi hi !

 

73 to all. Laurent.

 

 

On Thu, Dec 27, 2018 at 7:06 PM +0900, "Matthias Bopp" <matthias.bopp@...> wrote:

Dear Florian and Laurent,

 

no need to fight.

 

Both concepts have their place and will work.

 

I like the way Florian is addressing the problem with a closed loop concept measuring the received beacon frequency and adjusting the received frequency of other signals from the same transponder.

 

It would be perfect to have this feature in SDR-Radio as no additional hardware/software would be needed.

 

Possibly with a wide bandwidth SDR like the LimeSDR only one SDR is needed to do this. As SDR-Radio can already have multiple receivers within the

Bandwidth of the SDR this might be not too difficult for Simon to implement once he finds the time.

 

Best regards

 

Matthias

 

www.dd1us.de

 

 

Von:main@SDR-Radio.groups.io <main@SDR-Radio.groups.io>Im Auftrag vonfloroy42@...
Gesendet: Donnerstag, 27. Dezember 2018 10:57
An: main@SDR-Radio.groups.io
Betreff: Re: [SDR-Radio] Es Hail 2 LNB Antidrift

 

Clearly you don't understand what is meant.

I use 2 New.Gen RTL SDR sticks with TCXO 0,5 PPM and 2 PCs.

And this setup keeps ANY signal from the same sat within 10Hz FOR A DAY. 

With a unmodified Octagon OTSLO

vy73 DB8TF


External radio with transverter for satellite?

wageners@...
 

Hi Simon,

Wish you all the best for 2019!

Question: Would it be possible to have a transverter option associated with the eternal radio that would allow for doppler control of the sat frequencies eg 2m and 70cm while using an offset for 28Mhz on the external radio? The transverters are 144/28MHz and 432/28Mhz units. I am using my IC-7300 (via Omnirig) with the transverter for TX uplink and my IC-R8600 as the receiver RX downlink with SDR Console. That would allow the software to still control uplink doppler at 144 or 435 and the IC-7300 would show the 28+MHz frequency. Appreciate your consideration.

73, Stefan VE4NSA


Re: Es Hail 2 LNB Antidrift

Matthias Bopp
 

Michael,

yes it is sad but maybe someday P4B will happen ...

Best regards

Matthias


-----Ursprüngliche Nachricht-----
Von: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> Im Auftrag von Michael Durkin
Gesendet: Donnerstag, 27. Dezember 2018 16:09
An: main@sdr-radio.groups.io
Betreff: Re: [SDR-Radio] Es Hail 2 LNB Antidrift

That saddens me ...

I was so much looking forward to a Geo Station Sat .. i have had the equipment to use it for some time now ... before my wife told me that she wants a Divorce ...

I did not want to track with a 12' dish .... Some day ...

I cry into the night ....

On 12/27/18, Matthias Bopp <matthias.bopp@...> wrote:
Hi Michael,

I am afraid P4A will never cover North America as it will be
positioned at
26 degree east.

However AMSAT USA is working on P4B which shall cover North America. I
will not be a geostationary satellite but a highly elliptical orbit.

I am not aware of an updated schedule when it shall be launched.
Originally it was envisioned for mid 2017.

Here is some information on P4B:

https://www.dd1us.de/spacesounds%202i.html

I am no sure there is meanwhile newer information about P4B available.
If so I will be happy to add it.

Best regards

Matthias

www.dd1us.de


-----Ursprüngliche Nachricht-----
Von: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> Im Auftrag
von Michael Durkin
Gesendet: Donnerstag, 27. Dezember 2018 15:51
An: main@sdr-radio.groups.io
Betreff: Re: [SDR-Radio] Es Hail 2 LNB Antidrift

Can any one mention if / when a Es’Hail 2 (Phase 4?) Geo will be over
the America's ?

KC7NOA

On 12/27/18, Tarquin Roode <tarquin.roode@...> wrote:
Hi



I worked at a satellite earth station, we used mostly Intelsat
satellites for the services I worked on,

we used 30 meter dishes…

There is Doppler,

Geostationary is not stationary! Earth is not stationary.



That being said the Doppler was insignificant for us. But useful for
some of the experimental trackers that did some experiments, but
monopole was simpler, we just used step track..yes we had to track
the Geostaionary satellites lese the 30 meter dishes would drop
signal if we didn’t point accurately enough.



Tarquin Roode

ZR1TR



From: main@SDR-Radio.groups.io [mailto:main@SDR-Radio.groups.io] On
Behalf Of Mr VILLAIN Laurent
Sent: 27 December 2018 12:32 PM
To: main@sdr-radio.groups.io; main@sdr-radio.groups.io
Subject: Re: [SDR-Radio] Es Hail 2 LNB Antidrift



What doppler ????? Its a GEO sat .... there is NO Doppler !!!!!



Believe it or not, GPSDO is more expensive and has slightly more
drift than the sw correction = I guess a joke ?



73 Laurent. F4AAR.



Obtenez Outlook pour iOS <https://aka.ms/o0ukef>

_____

De : main@sdr-radio.groups.io de la part de floroy42@...
Envoyé : jeudi, décembre 27, 2018 7:29 PM À :
main@sdr-radio.groups.io Objet : Re: [SDR-Radio] Es Hail 2 LNB
Antidrift



I have seen some signals which where stabilized with GPSDO and they
still have a little drift of a few Hz.

My solution uses the beacon signals from the sat an eliminates any
doppler or other effects that may appear.

Believe it or not, GPSDO is more expensive and has slightly more
drift than the sw correction.

But clearly both systems work excellent for SSB. Only the
modification of the LNB won't be needed and costs of a GPSDO could be saved.

vy73 DB8TF





---
This email has been checked for viruses by AVG.
https://www.avg.com









Re: Es Hail 2 LNB Antidrift

Michael Durkin
 

That saddens me ...

I was so much looking forward to a Geo Station Sat .. i have had the
equipment to use it for some time now ... before my wife told me that
she wants a Divorce ...

I did not want to track with a 12' dish .... Some day ...

I cry into the night ....

On 12/27/18, Matthias Bopp <matthias.bopp@...> wrote:
Hi Michael,

I am afraid P4A will never cover North America as it will be positioned at
26 degree east.

However AMSAT USA is working on P4B which shall cover North America. I will
not be a geostationary
satellite but a highly elliptical orbit.

I am not aware of an updated schedule when it shall be launched. Originally
it was envisioned for mid 2017.

Here is some information on P4B:

https://www.dd1us.de/spacesounds%202i.html

I am no sure there is meanwhile newer information about P4B available. If so
I will be happy to add it.

Best regards

Matthias

www.dd1us.de


-----Ursprüngliche Nachricht-----
Von: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> Im Auftrag von
Michael Durkin
Gesendet: Donnerstag, 27. Dezember 2018 15:51
An: main@sdr-radio.groups.io
Betreff: Re: [SDR-Radio] Es Hail 2 LNB Antidrift

Can any one mention if / when a Es’Hail 2 (Phase 4?) Geo will be over the
America's ?

KC7NOA

On 12/27/18, Tarquin Roode <tarquin.roode@...> wrote:
Hi



I worked at a satellite earth station, we used mostly Intelsat
satellites for the services I worked on,

we used 30 meter dishes…

There is Doppler,

Geostationary is not stationary! Earth is not stationary.



That being said the Doppler was insignificant for us. But useful for
some of the experimental trackers that did some experiments, but
monopole was simpler, we just used step track..yes we had to track the
Geostaionary satellites lese the 30 meter dishes would drop signal if
we didn’t point accurately enough.



Tarquin Roode

ZR1TR



From: main@SDR-Radio.groups.io [mailto:main@SDR-Radio.groups.io] On
Behalf Of Mr VILLAIN Laurent
Sent: 27 December 2018 12:32 PM
To: main@sdr-radio.groups.io; main@sdr-radio.groups.io
Subject: Re: [SDR-Radio] Es Hail 2 LNB Antidrift



What doppler ????? Its a GEO sat .... there is NO Doppler !!!!!



Believe it or not, GPSDO is more expensive and has slightly more drift
than the sw correction = I guess a joke ?



73 Laurent. F4AAR.



Obtenez Outlook pour iOS <https://aka.ms/o0ukef>

_____

De : main@sdr-radio.groups.io de la part de floroy42@...
Envoyé : jeudi, décembre 27, 2018 7:29 PM À : main@sdr-radio.groups.io
Objet : Re: [SDR-Radio] Es Hail 2 LNB Antidrift



I have seen some signals which where stabilized with GPSDO and they
still have a little drift of a few Hz.

My solution uses the beacon signals from the sat an eliminates any
doppler or other effects that may appear.

Believe it or not, GPSDO is more expensive and has slightly more drift
than the sw correction.

But clearly both systems work excellent for SSB. Only the modification
of the LNB won't be needed and costs of a GPSDO could be saved.

vy73 DB8TF





---
This email has been checked for viruses by AVG.
https://www.avg.com









Re: Es Hail 2 LNB Antidrift

Matthias Bopp
 

Hi Michael,

I am afraid P4A will never cover North America as it will be positioned at 26 degree east.

However AMSAT USA is working on P4B which shall cover North America. I will not be a geostationary
satellite but a highly elliptical orbit.

I am not aware of an updated schedule when it shall be launched. Originally it was envisioned for mid 2017.

Here is some information on P4B:

https://www.dd1us.de/spacesounds%202i.html

I am no sure there is meanwhile newer information about P4B available. If so I will be happy to add it.

Best regards

Matthias

www.dd1us.de


-----Ursprüngliche Nachricht-----
Von: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> Im Auftrag von Michael Durkin
Gesendet: Donnerstag, 27. Dezember 2018 15:51
An: main@sdr-radio.groups.io
Betreff: Re: [SDR-Radio] Es Hail 2 LNB Antidrift

Can any one mention if / when a Es’Hail 2 (Phase 4?) Geo will be over the America's ?

KC7NOA

On 12/27/18, Tarquin Roode <tarquin.roode@...> wrote:
Hi



I worked at a satellite earth station, we used mostly Intelsat
satellites for the services I worked on,

we used 30 meter dishes…

There is Doppler,

Geostationary is not stationary! Earth is not stationary.



That being said the Doppler was insignificant for us. But useful for
some of the experimental trackers that did some experiments, but
monopole was simpler, we just used step track..yes we had to track the
Geostaionary satellites lese the 30 meter dishes would drop signal if
we didn’t point accurately enough.



Tarquin Roode

ZR1TR



From: main@SDR-Radio.groups.io [mailto:main@SDR-Radio.groups.io] On
Behalf Of Mr VILLAIN Laurent
Sent: 27 December 2018 12:32 PM
To: main@sdr-radio.groups.io; main@sdr-radio.groups.io
Subject: Re: [SDR-Radio] Es Hail 2 LNB Antidrift



What doppler ????? Its a GEO sat .... there is NO Doppler !!!!!



Believe it or not, GPSDO is more expensive and has slightly more drift
than the sw correction = I guess a joke ?



73 Laurent. F4AAR.



Obtenez Outlook pour iOS <https://aka.ms/o0ukef>

_____

De : main@sdr-radio.groups.io de la part de floroy42@...
Envoyé : jeudi, décembre 27, 2018 7:29 PM À : main@sdr-radio.groups.io
Objet : Re: [SDR-Radio] Es Hail 2 LNB Antidrift



I have seen some signals which where stabilized with GPSDO and they
still have a little drift of a few Hz.

My solution uses the beacon signals from the sat an eliminates any
doppler or other effects that may appear.

Believe it or not, GPSDO is more expensive and has slightly more drift
than the sw correction.

But clearly both systems work excellent for SSB. Only the modification
of the LNB won't be needed and costs of a GPSDO could be saved.

vy73 DB8TF





---
This email has been checked for viruses by AVG.
https://www.avg.com




Re: Es Hail 2 LNB Antidrift

Michael Durkin
 

Can any one mention if / when a Es’Hail 2 (Phase 4?) Geo will be over
the America's ?

KC7NOA

On 12/27/18, Tarquin Roode <tarquin.roode@...> wrote:
Hi



I worked at a satellite earth station, we used mostly Intelsat satellites
for the services I worked on,

we used 30 meter dishes…

There is Doppler,

Geostationary is not stationary! Earth is not stationary.



That being said the Doppler was insignificant for us. But useful for some of
the experimental trackers that did some experiments, but monopole was
simpler, we just used step track..yes we had to track the Geostaionary
satellites lese the 30 meter dishes would drop signal if we didn’t point
accurately enough.



Tarquin Roode

ZR1TR



From: main@SDR-Radio.groups.io [mailto:main@SDR-Radio.groups.io] On Behalf
Of Mr VILLAIN Laurent
Sent: 27 December 2018 12:32 PM
To: main@sdr-radio.groups.io; main@sdr-radio.groups.io
Subject: Re: [SDR-Radio] Es Hail 2 LNB Antidrift



What doppler ????? Its a GEO sat .... there is NO Doppler !!!!!



Believe it or not, GPSDO is more expensive and has slightly more drift than
the sw correction = I guess a joke ?



73 Laurent. F4AAR.



Obtenez Outlook pour iOS <https://aka.ms/o0ukef>

_____

De : main@sdr-radio.groups.io de la part de floroy42@...
Envoyé : jeudi, décembre 27, 2018 7:29 PM
À : main@sdr-radio.groups.io
Objet : Re: [SDR-Radio] Es Hail 2 LNB Antidrift



I have seen some signals which where stabilized with GPSDO and they still
have a little drift of a few Hz.

My solution uses the beacon signals from the sat an eliminates any doppler
or other effects that may appear.

Believe it or not, GPSDO is more expensive and has slightly more drift than
the sw correction.

But clearly both systems work excellent for SSB. Only the modification of
the LNB won't be needed and costs of a GPSDO could be saved.

vy73 DB8TF





---
This email has been checked for viruses by AVG.
https://www.avg.com




Re: Es Hail 2 LNB Antidrift

Tarquin Roode
 

Hi

 

I worked at a satellite earth station, we used mostly Intelsat satellites for the services I worked on,

we used 30 meter dishes…

There is Doppler,

Geostationary is not stationary! Earth is not stationary.

 

That being said the Doppler was insignificant for us. But useful for some of the experimental trackers that did some experiments, but monopole was simpler, we just used step track..yes we had to track the Geostaionary satellites lese the 30 meter dishes would  drop signal if we didn’t point accurately enough.

 

Tarquin Roode

ZR1TR

 

From: main@SDR-Radio.groups.io [mailto:main@SDR-Radio.groups.io] On Behalf Of Mr VILLAIN Laurent
Sent: 27 December 2018 12:32 PM
To: main@sdr-radio.groups.io; main@sdr-radio.groups.io
Subject: Re: [SDR-Radio] Es Hail 2 LNB Antidrift

 

What doppler ????? Its a GEO sat .... there is NO Doppler !!!!!

 

Believe it or not, GPSDO is more expensive and has slightly more drift than the sw correction = I guess a joke ?

 

73 Laurent. F4AAR.

 


De : main@sdr-radio.groups.io de la part de floroy42@...
Envoyé : jeudi, décembre 27, 2018 7:29 PM
À : main@sdr-radio.groups.io
Objet : Re: [SDR-Radio] Es Hail 2 LNB Antidrift

 

I have seen some signals which where stabilized with GPSDO and they still have a little drift of a few Hz.

My solution uses the beacon signals from the sat an eliminates any doppler or other effects that may appear.

Believe it or not, GPSDO is more expensive and has slightly more drift than the sw correction.

But clearly both systems work excellent for SSB. Only the modification of the LNB won't be needed and costs of a GPSDO could be saved.

vy73 DB8TF


Virus-free. www.avg.com


Re: Es Hail 2 LNB Antidrift

Mr VILLAIN Laurent
 

Fully agree with you Matthias.



De : main@sdr-radio.groups.io de la part de Matthias Bopp <matthias.bopp@...>
Envoyé : jeudi, décembre 27, 2018 8:39 PM
À : main@sdr-radio.groups.io
Objet : Re: [SDR-Radio] Es Hail 2 LNB Antidrift
 

Hi Laurant,

 

I understand but when already building an external reference circuit to generate the 27 MHz why not chose another reference to move the IF higher

and have higher overall gain. Also if you move the IF beyond 950 MHz you can use common DVB-S2 receivers. The effort is basically the same.

 

At the same time you can have an addition feature: if you chose for instance 26,03076923 MHz you get a LO frequency of 9400 MHz.

Thus you can tune your receiver easily as the last digits of your tuned frequency are the same:

for instance RF=10489,952 MHz will result in an IF=1089,952 MHz.

 

That might be only useful with analogue receivers as with SDRs you can typically adjust the frequency offset easily.

 

Anyhow, there are apparently many ways to Rome …

 

Have a nice day

 

Matthias

 

www.dd1us.de

 

 

 

Von: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io>Im Auftrag von Mr VILLAIN Laurent
Gesendet: Donnerstag, 27. Dezember 2018 12:04
An: main@sdr-radio.groups.io; main@sdr-radio.groups.io
Betreff: Re: [SDR-Radio] Es Hail 2 LNB Antidrift

 

Matthias,

 

The 27 MHz is locked on the GPS signal ( VCTCXO ) and re-injected to replace the 27 MHz crystal, only re-injected on one pin of PLL chip.

 

73 Laurent.

 


De :main@sdr-radio.groups.io de la part de Matthias Bopp <matthias.bopp@...>
Envoyé : jeudi, décembre 27, 2018 8:01 PM
À : main@sdr-radio.groups.io
Objet : Re: [SDR-Radio] Es Hail 2 LNB Antidrift

 

Hi Laurant,

 

I am presently modifying another LNB and will lock it to a GSPDO or Rubidum (both are available here).

 

What I do not understand in the approach from Loetlabor Jena is why they still stick to the 27 MHz reference.

 

I have  10 MHz to 26,03076923 MHz PLL converter built by DF9NP for me which I will use.

 

This moves the IF band higher and normal SAT-RX can be used and also most SDRs for narrowband.

 

Best regards

 

Matthias

 

 

 

Von:main@SDR-Radio.groups.io <main@SDR-Radio.groups.io>Im Auftrag vonMr VILLAIN Laurent
Gesendet: Donnerstag, 27. Dezember 2018 11:52
An: main@sdr-radio.groups.io;main@sdr-radio.groups.io
Betreff: Re: [SDR-Radio] Es Hail 2 LNB Antidrift

 

Hello Matthias 73.

 

 

 

Did you check RF filter response too ?

 

DL3YC modification, LNB fully locked on GPS.

 

 

 


De :main@sdr-radio.groups.io de la part de Matthias Bopp <matthias.bopp@...>
Envoyé : jeudi, décembre 27, 2018 7:41 PM
À : main@sdr-radio.groups.io
Objet : Re: [SDR-Radio] Es Hail 2 LNB Antidrift

 

Hi Laurant,

 

As you have requested here is a spectrum sweep of a unmodified dual Octagon PLL LNB. LO was 9750 Mhz.

 

As you can see the gain at 600 MHz drops by about 5dB (roughly).

 

I assume this is the frequency response of the IF chain and as the LNB has plenty of gain I don’t think it is a real problem.

 

It is different if the frequency response (high pass characteristic) is based on the amplifiers in front of the mixer as then total system noise figure should be impacted.

 

Nevertheless I changed the reference of my LNB to move the IF signals up above 1 GHz and also use a TCXO.

 

Here is a description of the modification I made:

 

https://www.dropbox.com/s/bp61phg1e2vihun/Feed%20fuer%20EsHail-2%200v3.pdf?dl=0

 

Best regards

 

Matthias

 

 

Von:main@SDR-Radio.groups.io <main@SDR-Radio.groups.io>Im Auftrag vonMr VILLAIN Laurent
Gesendet: Donnerstag, 27. Dezember 2018 11:20
An: main@sdr-radio.groups.io;main@sdr-radio.groups.io
Betreff: Re: [SDR-Radio] Es Hail 2 LNB Antidrift

 

The best solution for SSB is DL3YC idea.

 

You could see on his blog. Its the optimal one.

 

In all cases your 0,5 ppm TCXO's or crystals will be under the GPS signal in all cases.

 

Without modification of LNB, you will lost IF gain too, if not, lets share a spectrum capture.

 

Warm 73, no fight, just discuss. Laurent.

 


De :main@sdr-radio.groups.io de la part de Mr VILLAIN Laurent <f4aar@...>
Envoyé : jeudi, décembre 27, 2018 7:07 PM
À : main@sdr-radio.groups.io;main@sdr-radio.groups.io
Objet : Re: [SDR-Radio] Es Hail 2 LNB Antidrift

 

No fight, just discussion. Hi hi !

 

73 to all. Laurent.

 

 

On Thu, Dec 27, 2018 at 7:06 PM +0900, "Matthias Bopp" <matthias.bopp@...> wrote:

Dear Florian and Laurent,

 

no need to fight.

 

Both concepts have their place and will work.

 

I like the way Florian is addressing the problem with a closed loop concept measuring the received beacon frequency and adjusting the received frequency of other signals from the same transponder.

 

It would be perfect to have this feature in SDR-Radio as no additional hardware/software would be needed.

 

Possibly with a wide bandwidth SDR like the LimeSDR only one SDR is needed to do this. As SDR-Radio can already have multiple receivers within the

Bandwidth of the SDR this might be not too difficult for Simon to implement once he finds the time.

 

Best regards

 

Matthias

 

www.dd1us.de

 

 

Von:main@SDR-Radio.groups.io <main@SDR-Radio.groups.io>Im Auftrag vonfloroy42@...
Gesendet: Donnerstag, 27. Dezember 2018 10:57
An: main@SDR-Radio.groups.io
Betreff: Re: [SDR-Radio] Es Hail 2 LNB Antidrift

 

Clearly you don't understand what is meant.

I use 2 New.Gen RTL SDR sticks with TCXO 0,5 PPM and 2 PCs.

And this setup keeps ANY signal from the same sat within 10Hz FOR A DAY. 

With a unmodified Octagon OTSLO

vy73 DB8TF


Re: Es Hail 2 LNB Antidrift

Matthias Bopp
 

Hi Laurant,

 

I understand but when already building an external reference circuit to generate the 27 MHz why not chose another reference to move the IF higher

and have higher overall gain. Also if you move the IF beyond 950 MHz you can use common DVB-S2 receivers. The effort is basically the same.

 

At the same time you can have an addition feature: if you chose for instance 26,03076923 MHz you get a LO frequency of 9400 MHz.

Thus you can tune your receiver easily as the last digits of your tuned frequency are the same:

for instance RF=10489,952 MHz will result in an IF=1089,952 MHz.

 

That might be only useful with analogue receivers as with SDRs you can typically adjust the frequency offset easily.

 

Anyhow, there are apparently many ways to Rome …

 

Have a nice day

 

Matthias

 

www.dd1us.de

 

 

 

Von: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> Im Auftrag von Mr VILLAIN Laurent
Gesendet: Donnerstag, 27. Dezember 2018 12:04
An: main@sdr-radio.groups.io; main@sdr-radio.groups.io
Betreff: Re: [SDR-Radio] Es Hail 2 LNB Antidrift

 

Matthias,

 

The 27 MHz is locked on the GPS signal ( VCTCXO ) and re-injected to replace the 27 MHz crystal, only re-injected on one pin of PLL chip.

 

73 Laurent.

 


De : main@sdr-radio.groups.io de la part de Matthias Bopp <matthias.bopp@...>
Envoyé : jeudi, décembre 27, 2018 8:01 PM
À : main@sdr-radio.groups.io
Objet : Re: [SDR-Radio] Es Hail 2 LNB Antidrift

 

Hi Laurant,

 

I am presently modifying another LNB and will lock it to a GSPDO or Rubidum (both are available here).

 

What I do not understand in the approach from Loetlabor Jena is why they still stick to the 27 MHz reference.

 

I have  10 MHz to 26,03076923 MHz PLL converter built by DF9NP for me which I will use.

 

This moves the IF band higher and normal SAT-RX can be used and also most SDRs for narrowband.

 

Best regards

 

Matthias

 

 

 

Von: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io>Im Auftrag von Mr VILLAIN Laurent
Gesendet: Donnerstag, 27. Dezember 2018 11:52
An: main@sdr-radio.groups.io; main@sdr-radio.groups.io
Betreff: Re: [SDR-Radio] Es Hail 2 LNB Antidrift

 

Hello Matthias 73.

 

 

 

Did you check RF filter response too ?

 

DL3YC modification, LNB fully locked on GPS.

 

 

 


De :main@sdr-radio.groups.io de la part de Matthias Bopp <matthias.bopp@...>
Envoyé : jeudi, décembre 27, 2018 7:41 PM
À : main@sdr-radio.groups.io
Objet : Re: [SDR-Radio] Es Hail 2 LNB Antidrift

 

Hi Laurant,

 

As you have requested here is a spectrum sweep of a unmodified dual Octagon PLL LNB. LO was 9750 Mhz.

 

As you can see the gain at 600 MHz drops by about 5dB (roughly).

 

I assume this is the frequency response of the IF chain and as the LNB has plenty of gain I don’t think it is a real problem.

 

It is different if the frequency response (high pass characteristic) is based on the amplifiers in front of the mixer as then total system noise figure should be impacted.

 

Nevertheless I changed the reference of my LNB to move the IF signals up above 1 GHz and also use a TCXO.

 

Here is a description of the modification I made:

 

https://www.dropbox.com/s/bp61phg1e2vihun/Feed%20fuer%20EsHail-2%200v3.pdf?dl=0

 

Best regards

 

Matthias

 

 

Von:main@SDR-Radio.groups.io <main@SDR-Radio.groups.io>Im Auftrag vonMr VILLAIN Laurent
Gesendet: Donnerstag, 27. Dezember 2018 11:20
An: main@sdr-radio.groups.io;main@sdr-radio.groups.io
Betreff: Re: [SDR-Radio] Es Hail 2 LNB Antidrift

 

The best solution for SSB is DL3YC idea.

 

You could see on his blog. Its the optimal one.

 

In all cases your 0,5 ppm TCXO's or crystals will be under the GPS signal in all cases.

 

Without modification of LNB, you will lost IF gain too, if not, lets share a spectrum capture.

 

Warm 73, no fight, just discuss. Laurent.

 


De :main@sdr-radio.groups.io de la part de Mr VILLAIN Laurent <f4aar@...>
Envoyé : jeudi, décembre 27, 2018 7:07 PM
À : main@sdr-radio.groups.io;main@sdr-radio.groups.io
Objet : Re: [SDR-Radio] Es Hail 2 LNB Antidrift

 

No fight, just discussion. Hi hi !

 

73 to all. Laurent.

 

 

On Thu, Dec 27, 2018 at 7:06 PM +0900, "Matthias Bopp" <matthias.bopp@...> wrote:

Dear Florian and Laurent,

 

no need to fight.

 

Both concepts have their place and will work.

 

I like the way Florian is addressing the problem with a closed loop concept measuring the received beacon frequency and adjusting the received frequency of other signals from the same transponder.

 

It would be perfect to have this feature in SDR-Radio as no additional hardware/software would be needed.

 

Possibly with a wide bandwidth SDR like the LimeSDR only one SDR is needed to do this. As SDR-Radio can already have multiple receivers within the

Bandwidth of the SDR this might be not too difficult for Simon to implement once he finds the time.

 

Best regards

 

Matthias

 

www.dd1us.de

 

 

Von:main@SDR-Radio.groups.io <main@SDR-Radio.groups.io>Im Auftrag vonfloroy42@...
Gesendet: Donnerstag, 27. Dezember 2018 10:57
An: main@SDR-Radio.groups.io
Betreff: Re: [SDR-Radio] Es Hail 2 LNB Antidrift

 

Clearly you don't understand what is meant.

I use 2 New.Gen RTL SDR sticks with TCXO 0,5 PPM and 2 PCs.

And this setup keeps ANY signal from the same sat within 10Hz FOR A DAY. 

With a unmodified Octagon OTSLO

vy73 DB8TF


Re: Es Hail 2 LNB Antidrift

Mr VILLAIN Laurent
 

Yes please share.

You are very stable and frequency drifted, the best of the best ;)))))

Laurent.


De : main@sdr-radio.groups.io de la part de Matthias Bopp <matthias.bopp@...>
Envoyé : jeudi, décembre 27, 2018 8:27 PM
À : main@sdr-radio.groups.io
Objet : Re: [SDR-Radio] Es Hail 2 LNB Antidrift
 

Hi Laurent,

 

as you could see from my description the Octagon LNB can be modified from a 27 MHz reference to a 26 MHz.

 

As it locked to the 26 MHz TCXO also locking it to the 26,03076923 MHz should be no problem.

 

I have not tried how much lower the reference can be but 26 MHz is no problem. I have made comparisons

of the LO spectrum before and after the modification and measured no difference. I will add those measurement

results to the description when I get back home (I am presently at my 2nd QTH).

 

Of course with other LNBs that might be different.

 

Kind regards

 

Matthias

 

 

 

Von: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io>Im Auftrag von Mr VILLAIN Laurent
Gesendet: Donnerstag, 27. Dezember 2018 12:11
An: main@sdr-radio.groups.io; main@sdr-radio.groups.io
Betreff: Re: [SDR-Radio] Es Hail 2 LNB Antidrift

 

26,03 MHz not sure if the PLL chip will lock on it or not.

 

Its far from the original 27 MHz, must be tested to know.

 

I have tested some PLL chip, normally 25 MHz, they lock from 24,2 MHz up to 25,2 MHz, no more ...

 

Laurent.

 


De :main@sdr-radio.groups.io de la part de Mr VILLAIN Laurent <f4aar@...>
Envoyé : jeudi, décembre 27, 2018 8:04 PM
À : main@sdr-radio.groups.io;main@sdr-radio.groups.io
Objet : Re: [SDR-Radio] Es Hail 2 LNB Antidrift

 

Matthias,

 

The 27 MHz is locked on the GPS signal ( VCTCXO ) and re-injected to replace the 27 MHz crystal, only re-injected on one pin of PLL chip.

 

73 Laurent.

 


De :main@sdr-radio.groups.io de la part de Matthias Bopp <matthias.bopp@...>
Envoyé : jeudi, décembre 27, 2018 8:01 PM
À : main@sdr-radio.groups.io
Objet : Re: [SDR-Radio] Es Hail 2 LNB Antidrift

 

Hi Laurant,

 

I am presently modifying another LNB and will lock it to a GSPDO or Rubidum (both are available here).

 

What I do not understand in the approach from Loetlabor Jena is why they still stick to the 27 MHz reference.

 

I have  10 MHz to 26,03076923 MHz PLL converter built by DF9NP for me which I will use.

 

This moves the IF band higher and normal SAT-RX can be used and also most SDRs for narrowband.

 

Best regards

 

Matthias

 

 

 

Von:main@SDR-Radio.groups.io <main@SDR-Radio.groups.io>Im Auftrag vonMr VILLAIN Laurent
Gesendet: Donnerstag, 27. Dezember 2018 11:52
An: main@sdr-radio.groups.io;main@sdr-radio.groups.io
Betreff: Re: [SDR-Radio] Es Hail 2 LNB Antidrift

 

Hello Matthias 73.

 

 

 

Did you check RF filter response too ?

 

DL3YC modification, LNB fully locked on GPS.

 

 

 


De :main@sdr-radio.groups.io de la part de Matthias Bopp <matthias.bopp@...>
Envoyé : jeudi, décembre 27, 2018 7:41 PM
À : main@sdr-radio.groups.io
Objet : Re: [SDR-Radio] Es Hail 2 LNB Antidrift

 

Hi Laurant,

 

As you have requested here is a spectrum sweep of a unmodified dual Octagon PLL LNB. LO was 9750 Mhz.

 

As you can see the gain at 600 MHz drops by about 5dB (roughly).

 

I assume this is the frequency response of the IF chain and as the LNB has plenty of gain I don’t think it is a real problem.

 

It is different if the frequency response (high pass characteristic) is based on the amplifiers in front of the mixer as then total system noise figure should be impacted.

 

Nevertheless I changed the reference of my LNB to move the IF signals up above 1 GHz and also use a TCXO.

 

Here is a description of the modification I made:

 

https://www.dropbox.com/s/bp61phg1e2vihun/Feed%20fuer%20EsHail-2%200v3.pdf?dl=0

 

Best regards

 

Matthias

 

 

Von:main@SDR-Radio.groups.io <main@SDR-Radio.groups.io>Im Auftrag vonMr VILLAIN Laurent
Gesendet: Donnerstag, 27. Dezember 2018 11:20
An: main@sdr-radio.groups.io;main@sdr-radio.groups.io
Betreff: Re: [SDR-Radio] Es Hail 2 LNB Antidrift

 

The best solution for SSB is DL3YC idea.

 

You could see on his blog. Its the optimal one.

 

In all cases your 0,5 ppm TCXO's or crystals will be under the GPS signal in all cases.

 

Without modification of LNB, you will lost IF gain too, if not, lets share a spectrum capture.

 

Warm 73, no fight, just discuss. Laurent.

 


De :main@sdr-radio.groups.io de la part de Mr VILLAIN Laurent <f4aar@...>
Envoyé : jeudi, décembre 27, 2018 7:07 PM
À : main@sdr-radio.groups.io;main@sdr-radio.groups.io
Objet : Re: [SDR-Radio] Es Hail 2 LNB Antidrift

 

No fight, just discussion. Hi hi !

 

73 to all. Laurent.

 

 

On Thu, Dec 27, 2018 at 7:06 PM +0900, "Matthias Bopp" <matthias.bopp@...> wrote:

Dear Florian and Laurent,

 

no need to fight.

 

Both concepts have their place and will work.

 

I like the way Florian is addressing the problem with a closed loop concept measuring the received beacon frequency and adjusting the received frequency of other signals from the same transponder.

 

It would be perfect to have this feature in SDR-Radio as no additional hardware/software would be needed.

 

Possibly with a wide bandwidth SDR like the LimeSDR only one SDR is needed to do this. As SDR-Radio can already have multiple receivers within the

Bandwidth of the SDR this might be not too difficult for Simon to implement once he finds the time.

 

Best regards

 

Matthias

 

www.dd1us.de

 

 

Von:main@SDR-Radio.groups.io <main@SDR-Radio.groups.io>Im Auftrag vonfloroy42@...
Gesendet: Donnerstag, 27. Dezember 2018 10:57
An: main@SDR-Radio.groups.io
Betreff: Re: [SDR-Radio] Es Hail 2 LNB Antidrift

 

Clearly you don't understand what is meant.

I use 2 New.Gen RTL SDR sticks with TCXO 0,5 PPM and 2 PCs.

And this setup keeps ANY signal from the same sat within 10Hz FOR A DAY. 

With a unmodified Octagon OTSLO

vy73 DB8TF


Re: Es Hail 2 LNB Antidrift

Matthias Bopp
 

Hi Laurent,

 

as you could see from my description the Octagon LNB can be modified from a 27 MHz reference to a 26 MHz.

 

As it locked to the 26 MHz TCXO also locking it to the 26,03076923 MHz should be no problem.

 

I have not tried how much lower the reference can be but 26 MHz is no problem. I have made comparisons

of the LO spectrum before and after the modification and measured no difference. I will add those measurement

results to the description when I get back home (I am presently at my 2nd QTH).

 

Of course with other LNBs that might be different.

 

Kind regards

 

Matthias

 

 

 

Von: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> Im Auftrag von Mr VILLAIN Laurent
Gesendet: Donnerstag, 27. Dezember 2018 12:11
An: main@sdr-radio.groups.io; main@sdr-radio.groups.io
Betreff: Re: [SDR-Radio] Es Hail 2 LNB Antidrift

 

26,03 MHz not sure if the PLL chip will lock on it or not.

 

Its far from the original 27 MHz, must be tested to know.

 

I have tested some PLL chip, normally 25 MHz, they lock from 24,2 MHz up to 25,2 MHz, no more ...

 

Laurent.

 


De : main@sdr-radio.groups.io de la part de Mr VILLAIN Laurent <f4aar@...>
Envoyé : jeudi, décembre 27, 2018 8:04 PM
À : main@sdr-radio.groups.io; main@sdr-radio.groups.io
Objet : Re: [SDR-Radio] Es Hail 2 LNB Antidrift

 

Matthias,

 

The 27 MHz is locked on the GPS signal ( VCTCXO ) and re-injected to replace the 27 MHz crystal, only re-injected on one pin of PLL chip.

 

73 Laurent.

 


De : main@sdr-radio.groups.io de la part de Matthias Bopp <matthias.bopp@...>
Envoyé : jeudi, décembre 27, 2018 8:01 PM
À : main@sdr-radio.groups.io
Objet : Re: [SDR-Radio] Es Hail 2 LNB Antidrift

 

Hi Laurant,

 

I am presently modifying another LNB and will lock it to a GSPDO or Rubidum (both are available here).

 

What I do not understand in the approach from Loetlabor Jena is why they still stick to the 27 MHz reference.

 

I have  10 MHz to 26,03076923 MHz PLL converter built by DF9NP for me which I will use.

 

This moves the IF band higher and normal SAT-RX can be used and also most SDRs for narrowband.

 

Best regards

 

Matthias

 

 

 

Von: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io>Im Auftrag von Mr VILLAIN Laurent
Gesendet: Donnerstag, 27. Dezember 2018 11:52
An: main@sdr-radio.groups.io; main@sdr-radio.groups.io
Betreff: Re: [SDR-Radio] Es Hail 2 LNB Antidrift

 

Hello Matthias 73.

 

 

 

Did you check RF filter response too ?

 

DL3YC modification, LNB fully locked on GPS.

 

 

 


De :main@sdr-radio.groups.io de la part de Matthias Bopp <matthias.bopp@...>
Envoyé : jeudi, décembre 27, 2018 7:41 PM
À : main@sdr-radio.groups.io
Objet : Re: [SDR-Radio] Es Hail 2 LNB Antidrift

 

Hi Laurant,

 

As you have requested here is a spectrum sweep of a unmodified dual Octagon PLL LNB. LO was 9750 Mhz.

 

As you can see the gain at 600 MHz drops by about 5dB (roughly).

 

I assume this is the frequency response of the IF chain and as the LNB has plenty of gain I don’t think it is a real problem.

 

It is different if the frequency response (high pass characteristic) is based on the amplifiers in front of the mixer as then total system noise figure should be impacted.

 

Nevertheless I changed the reference of my LNB to move the IF signals up above 1 GHz and also use a TCXO.

 

Here is a description of the modification I made:

 

https://www.dropbox.com/s/bp61phg1e2vihun/Feed%20fuer%20EsHail-2%200v3.pdf?dl=0

 

Best regards

 

Matthias

 

 

Von:main@SDR-Radio.groups.io <main@SDR-Radio.groups.io>Im Auftrag vonMr VILLAIN Laurent
Gesendet: Donnerstag, 27. Dezember 2018 11:20
An: main@sdr-radio.groups.io;main@sdr-radio.groups.io
Betreff: Re: [SDR-Radio] Es Hail 2 LNB Antidrift

 

The best solution for SSB is DL3YC idea.

 

You could see on his blog. Its the optimal one.

 

In all cases your 0,5 ppm TCXO's or crystals will be under the GPS signal in all cases.

 

Without modification of LNB, you will lost IF gain too, if not, lets share a spectrum capture.

 

Warm 73, no fight, just discuss. Laurent.

 


De :main@sdr-radio.groups.io de la part de Mr VILLAIN Laurent <f4aar@...>
Envoyé : jeudi, décembre 27, 2018 7:07 PM
À : main@sdr-radio.groups.io;main@sdr-radio.groups.io
Objet : Re: [SDR-Radio] Es Hail 2 LNB Antidrift

 

No fight, just discussion. Hi hi !

 

73 to all. Laurent.

 

 

On Thu, Dec 27, 2018 at 7:06 PM +0900, "Matthias Bopp" <matthias.bopp@...> wrote:

Dear Florian and Laurent,

 

no need to fight.

 

Both concepts have their place and will work.

 

I like the way Florian is addressing the problem with a closed loop concept measuring the received beacon frequency and adjusting the received frequency of other signals from the same transponder.

 

It would be perfect to have this feature in SDR-Radio as no additional hardware/software would be needed.

 

Possibly with a wide bandwidth SDR like the LimeSDR only one SDR is needed to do this. As SDR-Radio can already have multiple receivers within the

Bandwidth of the SDR this might be not too difficult for Simon to implement once he finds the time.

 

Best regards

 

Matthias

 

www.dd1us.de

 

 

Von:main@SDR-Radio.groups.io <main@SDR-Radio.groups.io>Im Auftrag vonfloroy42@...
Gesendet: Donnerstag, 27. Dezember 2018 10:57
An: main@SDR-Radio.groups.io
Betreff: Re: [SDR-Radio] Es Hail 2 LNB Antidrift

 

Clearly you don't understand what is meant.

I use 2 New.Gen RTL SDR sticks with TCXO 0,5 PPM and 2 PCs.

And this setup keeps ANY signal from the same sat within 10Hz FOR A DAY. 

With a unmodified Octagon OTSLO

vy73 DB8TF


Re: Es Hail 2 LNB Antidrift

Mr VILLAIN Laurent
 

26,03 MHz not sure if the PLL chip will lock on it or not.

Its far from the original 27 MHz, must be tested to know.

I have tested some PLL chip, normally 25 MHz, they lock from 24,2 MHz up to 25,2 MHz, no more ...

Laurent.


De : main@sdr-radio.groups.io de la part de Mr VILLAIN Laurent <f4aar@...>
Envoyé : jeudi, décembre 27, 2018 8:04 PM
À : main@sdr-radio.groups.io; main@sdr-radio.groups.io
Objet : Re: [SDR-Radio] Es Hail 2 LNB Antidrift
 
Matthias,

The 27 MHz is locked on the GPS signal ( VCTCXO ) and re-injected to replace the 27 MHz crystal, only re-injected on one pin of PLL chip.

73 Laurent.


De : main@sdr-radio.groups.io de la part de Matthias Bopp <matthias.bopp@...>
Envoyé : jeudi, décembre 27, 2018 8:01 PM
À : main@sdr-radio.groups.io
Objet : Re: [SDR-Radio] Es Hail 2 LNB Antidrift
 

Hi Laurant,

 

I am presently modifying another LNB and will lock it to a GSPDO or Rubidum (both are available here).

 

What I do not understand in the approach from Loetlabor Jena is why they still stick to the 27 MHz reference.

 

I have  10 MHz to 26,03076923 MHz PLL converter built by DF9NP for me which I will use.

 

This moves the IF band higher and normal SAT-RX can be used and also most SDRs for narrowband.

 

Best regards

 

Matthias

 

 

 

Von: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io>Im Auftrag von Mr VILLAIN Laurent
Gesendet: Donnerstag, 27. Dezember 2018 11:52
An: main@sdr-radio.groups.io; main@sdr-radio.groups.io
Betreff: Re: [SDR-Radio] Es Hail 2 LNB Antidrift

 

Hello Matthias 73.

 

 

 

Did you check RF filter response too ?

 

DL3YC modification, LNB fully locked on GPS.

 

 

 


De :main@sdr-radio.groups.io de la part de Matthias Bopp <matthias.bopp@...>
Envoyé : jeudi, décembre 27, 2018 7:41 PM
À : main@sdr-radio.groups.io
Objet : Re: [SDR-Radio] Es Hail 2 LNB Antidrift

 

Hi Laurant,

 

As you have requested here is a spectrum sweep of a unmodified dual Octagon PLL LNB. LO was 9750 Mhz.

 

As you can see the gain at 600 MHz drops by about 5dB (roughly).

 

I assume this is the frequency response of the IF chain and as the LNB has plenty of gain I don’t think it is a real problem.

 

It is different if the frequency response (high pass characteristic) is based on the amplifiers in front of the mixer as then total system noise figure should be impacted.

 

Nevertheless I changed the reference of my LNB to move the IF signals up above 1 GHz and also use a TCXO.

 

Here is a description of the modification I made:

 

https://www.dropbox.com/s/bp61phg1e2vihun/Feed%20fuer%20EsHail-2%200v3.pdf?dl=0

 

Best regards

 

Matthias

 

 

Von:main@SDR-Radio.groups.io <main@SDR-Radio.groups.io>Im Auftrag vonMr VILLAIN Laurent
Gesendet: Donnerstag, 27. Dezember 2018 11:20
An: main@sdr-radio.groups.io;main@sdr-radio.groups.io
Betreff: Re: [SDR-Radio] Es Hail 2 LNB Antidrift

 

The best solution for SSB is DL3YC idea.

 

You could see on his blog. Its the optimal one.

 

In all cases your 0,5 ppm TCXO's or crystals will be under the GPS signal in all cases.

 

Without modification of LNB, you will lost IF gain too, if not, lets share a spectrum capture.

 

Warm 73, no fight, just discuss. Laurent.

 


De :main@sdr-radio.groups.io de la part de Mr VILLAIN Laurent <f4aar@...>
Envoyé : jeudi, décembre 27, 2018 7:07 PM
À : main@sdr-radio.groups.io;main@sdr-radio.groups.io
Objet : Re: [SDR-Radio] Es Hail 2 LNB Antidrift

 

No fight, just discussion. Hi hi !

 

73 to all. Laurent.

 

 

On Thu, Dec 27, 2018 at 7:06 PM +0900, "Matthias Bopp" <matthias.bopp@...> wrote:

Dear Florian and Laurent,

 

no need to fight.

 

Both concepts have their place and will work.

 

I like the way Florian is addressing the problem with a closed loop concept measuring the received beacon frequency and adjusting the received frequency of other signals from the same transponder.

 

It would be perfect to have this feature in SDR-Radio as no additional hardware/software would be needed.

 

Possibly with a wide bandwidth SDR like the LimeSDR only one SDR is needed to do this. As SDR-Radio can already have multiple receivers within the

Bandwidth of the SDR this might be not too difficult for Simon to implement once he finds the time.

 

Best regards

 

Matthias

 

www.dd1us.de

 

 

Von:main@SDR-Radio.groups.io <main@SDR-Radio.groups.io>Im Auftrag vonfloroy42@...
Gesendet: Donnerstag, 27. Dezember 2018 10:57
An: main@SDR-Radio.groups.io
Betreff: Re: [SDR-Radio] Es Hail 2 LNB Antidrift

 

Clearly you don't understand what is meant.

I use 2 New.Gen RTL SDR sticks with TCXO 0,5 PPM and 2 PCs.

And this setup keeps ANY signal from the same sat within 10Hz FOR A DAY. 

With a unmodified Octagon OTSLO

vy73 DB8TF


Re: Es Hail 2 LNB Antidrift

Mr VILLAIN Laurent
 

Matthias,

The 27 MHz is locked on the GPS signal ( VCTCXO ) and re-injected to replace the 27 MHz crystal, only re-injected on one pin of PLL chip.

73 Laurent.


De : main@sdr-radio.groups.io de la part de Matthias Bopp <matthias.bopp@...>
Envoyé : jeudi, décembre 27, 2018 8:01 PM
À : main@sdr-radio.groups.io
Objet : Re: [SDR-Radio] Es Hail 2 LNB Antidrift
 

Hi Laurant,

 

I am presently modifying another LNB and will lock it to a GSPDO or Rubidum (both are available here).

 

What I do not understand in the approach from Loetlabor Jena is why they still stick to the 27 MHz reference.

 

I have  10 MHz to 26,03076923 MHz PLL converter built by DF9NP for me which I will use.

 

This moves the IF band higher and normal SAT-RX can be used and also most SDRs for narrowband.

 

Best regards

 

Matthias

 

 

 

Von: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io>Im Auftrag von Mr VILLAIN Laurent
Gesendet: Donnerstag, 27. Dezember 2018 11:52
An: main@sdr-radio.groups.io; main@sdr-radio.groups.io
Betreff: Re: [SDR-Radio] Es Hail 2 LNB Antidrift

 

Hello Matthias 73.

 

 

 

Did you check RF filter response too ?

 

DL3YC modification, LNB fully locked on GPS.

 

 

 


De :main@sdr-radio.groups.io de la part de Matthias Bopp <matthias.bopp@...>
Envoyé : jeudi, décembre 27, 2018 7:41 PM
À : main@sdr-radio.groups.io
Objet : Re: [SDR-Radio] Es Hail 2 LNB Antidrift

 

Hi Laurant,

 

As you have requested here is a spectrum sweep of a unmodified dual Octagon PLL LNB. LO was 9750 Mhz.

 

As you can see the gain at 600 MHz drops by about 5dB (roughly).

 

I assume this is the frequency response of the IF chain and as the LNB has plenty of gain I don’t think it is a real problem.

 

It is different if the frequency response (high pass characteristic) is based on the amplifiers in front of the mixer as then total system noise figure should be impacted.

 

Nevertheless I changed the reference of my LNB to move the IF signals up above 1 GHz and also use a TCXO.

 

Here is a description of the modification I made:

 

https://www.dropbox.com/s/bp61phg1e2vihun/Feed%20fuer%20EsHail-2%200v3.pdf?dl=0

 

Best regards

 

Matthias

 

 

Von:main@SDR-Radio.groups.io <main@SDR-Radio.groups.io>Im Auftrag vonMr VILLAIN Laurent
Gesendet: Donnerstag, 27. Dezember 2018 11:20
An: main@sdr-radio.groups.io;main@sdr-radio.groups.io
Betreff: Re: [SDR-Radio] Es Hail 2 LNB Antidrift

 

The best solution for SSB is DL3YC idea.

 

You could see on his blog. Its the optimal one.

 

In all cases your 0,5 ppm TCXO's or crystals will be under the GPS signal in all cases.

 

Without modification of LNB, you will lost IF gain too, if not, lets share a spectrum capture.

 

Warm 73, no fight, just discuss. Laurent.

 


De :main@sdr-radio.groups.io de la part de Mr VILLAIN Laurent <f4aar@...>
Envoyé : jeudi, décembre 27, 2018 7:07 PM
À : main@sdr-radio.groups.io;main@sdr-radio.groups.io
Objet : Re: [SDR-Radio] Es Hail 2 LNB Antidrift

 

No fight, just discussion. Hi hi !

 

73 to all. Laurent.

 

 

On Thu, Dec 27, 2018 at 7:06 PM +0900, "Matthias Bopp" <matthias.bopp@...> wrote:

Dear Florian and Laurent,

 

no need to fight.

 

Both concepts have their place and will work.

 

I like the way Florian is addressing the problem with a closed loop concept measuring the received beacon frequency and adjusting the received frequency of other signals from the same transponder.

 

It would be perfect to have this feature in SDR-Radio as no additional hardware/software would be needed.

 

Possibly with a wide bandwidth SDR like the LimeSDR only one SDR is needed to do this. As SDR-Radio can already have multiple receivers within the

Bandwidth of the SDR this might be not too difficult for Simon to implement once he finds the time.

 

Best regards

 

Matthias

 

www.dd1us.de

 

 

Von:main@SDR-Radio.groups.io <main@SDR-Radio.groups.io>Im Auftrag vonfloroy42@...
Gesendet: Donnerstag, 27. Dezember 2018 10:57
An: main@SDR-Radio.groups.io
Betreff: Re: [SDR-Radio] Es Hail 2 LNB Antidrift

 

Clearly you don't understand what is meant.

I use 2 New.Gen RTL SDR sticks with TCXO 0,5 PPM and 2 PCs.

And this setup keeps ANY signal from the same sat within 10Hz FOR A DAY. 

With a unmodified Octagon OTSLO

vy73 DB8TF


Re: Es Hail 2 LNB Antidrift

Matthias Bopp
 

Hi Laurant,

 

I am presently modifying another LNB and will lock it to a GSPDO or Rubidum (both are available here).

 

What I do not understand in the approach from Loetlabor Jena is why they still stick to the 27 MHz reference.

 

I have  10 MHz to 26,03076923 MHz PLL converter built by DF9NP for me which I will use.

 

This moves the IF band higher and normal SAT-RX can be used and also most SDRs for narrowband.

 

Best regards

 

Matthias

 

 

 

Von: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> Im Auftrag von Mr VILLAIN Laurent
Gesendet: Donnerstag, 27. Dezember 2018 11:52
An: main@sdr-radio.groups.io; main@sdr-radio.groups.io
Betreff: Re: [SDR-Radio] Es Hail 2 LNB Antidrift

 

Hello Matthias 73.

 

 

 

Did you check RF filter response too ?

 

DL3YC modification, LNB fully locked on GPS.

 

 

 


De : main@sdr-radio.groups.io de la part de Matthias Bopp <matthias.bopp@...>
Envoyé : jeudi, décembre 27, 2018 7:41 PM
À : main@sdr-radio.groups.io
Objet : Re: [SDR-Radio] Es Hail 2 LNB Antidrift

 

Hi Laurant,

 

As you have requested here is a spectrum sweep of a unmodified dual Octagon PLL LNB. LO was 9750 Mhz.

 

As you can see the gain at 600 MHz drops by about 5dB (roughly).

 

I assume this is the frequency response of the IF chain and as the LNB has plenty of gain I don’t think it is a real problem.

 

It is different if the frequency response (high pass characteristic) is based on the amplifiers in front of the mixer as then total system noise figure should be impacted.

 

Nevertheless I changed the reference of my LNB to move the IF signals up above 1 GHz and also use a TCXO.

 

Here is a description of the modification I made:

 

https://www.dropbox.com/s/bp61phg1e2vihun/Feed%20fuer%20EsHail-2%200v3.pdf?dl=0

 

Best regards

 

Matthias

 

 

Von: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io>Im Auftrag von Mr VILLAIN Laurent
Gesendet: Donnerstag, 27. Dezember 2018 11:20
An: main@sdr-radio.groups.io; main@sdr-radio.groups.io
Betreff: Re: [SDR-Radio] Es Hail 2 LNB Antidrift

 

The best solution for SSB is DL3YC idea.

 

You could see on his blog. Its the optimal one.

 

In all cases your 0,5 ppm TCXO's or crystals will be under the GPS signal in all cases.

 

Without modification of LNB, you will lost IF gain too, if not, lets share a spectrum capture.

 

Warm 73, no fight, just discuss. Laurent.

 


De :main@sdr-radio.groups.io de la part de Mr VILLAIN Laurent <f4aar@...>
Envoyé : jeudi, décembre 27, 2018 7:07 PM
À : main@sdr-radio.groups.io;main@sdr-radio.groups.io
Objet : Re: [SDR-Radio] Es Hail 2 LNB Antidrift

 

No fight, just discussion. Hi hi !

 

73 to all. Laurent.

 

 

On Thu, Dec 27, 2018 at 7:06 PM +0900, "Matthias Bopp" <matthias.bopp@...> wrote:

Dear Florian and Laurent,

 

no need to fight.

 

Both concepts have their place and will work.

 

I like the way Florian is addressing the problem with a closed loop concept measuring the received beacon frequency and adjusting the received frequency of other signals from the same transponder.

 

It would be perfect to have this feature in SDR-Radio as no additional hardware/software would be needed.

 

Possibly with a wide bandwidth SDR like the LimeSDR only one SDR is needed to do this. As SDR-Radio can already have multiple receivers within the

Bandwidth of the SDR this might be not too difficult for Simon to implement once he finds the time.

 

Best regards

 

Matthias

 

www.dd1us.de

 

 

Von:main@SDR-Radio.groups.io <main@SDR-Radio.groups.io>Im Auftrag vonfloroy42@...
Gesendet: Donnerstag, 27. Dezember 2018 10:57
An: main@SDR-Radio.groups.io
Betreff: Re: [SDR-Radio] Es Hail 2 LNB Antidrift

 

Clearly you don't understand what is meant.

I use 2 New.Gen RTL SDR sticks with TCXO 0,5 PPM and 2 PCs.

And this setup keeps ANY signal from the same sat within 10Hz FOR A DAY. 

With a unmodified Octagon OTSLO

vy73 DB8TF


Re: Es Hail 2 LNB Antidrift

Mr VILLAIN Laurent
 

"There will be some Doppler even though Es’Hail 2 is a GEO satellite " => could you explain it ???

73 Laurent.


De : main@sdr-radio.groups.io de la part de Klaus Hutschenreuther <klaus.hutschenreuther@...>
Envoyé : jeudi, décembre 27, 2018 7:46 PM
À : main@sdr-radio.groups.io
Objet : Re: [SDR-Radio] Es Hail 2 LNB Antidrift
 

Hi,

 

You can take a look at the following:

 

https://loetlabor-jena.de/doku.php?id=projekte:3cmplllnb:start

 

http://www.dg0opk.darc.de/Octagon_LNB_mod_March2017.html

 

Klaus Hutschenreuther

 

Von: main@SDR-Radio.groups.io [mailto:main@SDR-Radio.groups.io] Im Auftrag von Simon Brown
Gesendet: Donnerstag, 27. Dezember 2018 09:55
An: main@SDR-Radio.groups.io
Betreff: Re: [SDR-Radio] Es Hail 2 LNB Antidrift

 

Hi,

 

The answer is no. I’ll be on Es’Hail 2 myself, so will look at the LNB issue once I have a dish and LNB organised. There will be some Doppler even though Es’Hail 2 is a GEO satellite.

 

As soon as Es’Hail 2 has been commissioned I’ll get a dish ordered and look at this issue.

 

Simon Brown, G4ELI
www.sdr-radio.com

 

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of floroy42@...
Sent: 26 December 2018 14:20
To: main@SDR-Radio.groups.io
Subject: [SDR-Radio] Es Hail 2 LNB Antidrift

 

Hello OMs,

it is possible with SDR Radio to lock on a signal (like AFC with FM) and receive with an second VFO another signal in USB which follows the lock on the first signal?

The problem is that the used LNBs for reception of EsHail2 Sat often drift several 100Hz in a few minutes.

On the narrow band HAM transponder two frequency-stable beacons are planned on the lower and upper band edge.

If you can lock to one of these beacons und demodulate any SSB signal between those following the drift of the beacons you won't have to retune every few seconds.

Anyone an idea?

vy73 DB8TF

Attachments:


Re: Es Hail 2 LNB Antidrift

Matthias Bopp
 

Hi Laurant,

 

this is the complete frequency response when tranmitting with a horn antenna maybe 2m away and measuring the IF output.

 

Thus it includes the frequency response of the horn (high pass), preamplifiers with filter, mixer and IF chain.

 

I have not measured the individual parts like the frequency response of the waveguide in the horn which might be a problem indeed.

 

However this would not be addressed by any of the modifications which were discussed in this thread anyway.

 

Kind regards

 

Matthias

 

www.dd1us.de

 

 

Von: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> Im Auftrag von Mr VILLAIN Laurent
Gesendet: Donnerstag, 27. Dezember 2018 11:52
An: main@sdr-radio.groups.io; main@sdr-radio.groups.io
Betreff: Re: [SDR-Radio] Es Hail 2 LNB Antidrift

 

Hello Matthias 73.

 

 

 

Did you check RF filter response too ?

 

DL3YC modification, LNB fully locked on GPS.

 

 

 


De : main@sdr-radio.groups.io de la part de Matthias Bopp <matthias.bopp@...>
Envoyé : jeudi, décembre 27, 2018 7:41 PM
À : main@sdr-radio.groups.io
Objet : Re: [SDR-Radio] Es Hail 2 LNB Antidrift

 

Hi Laurant,

 

As you have requested here is a spectrum sweep of a unmodified dual Octagon PLL LNB. LO was 9750 Mhz.

 

As you can see the gain at 600 MHz drops by about 5dB (roughly).

 

I assume this is the frequency response of the IF chain and as the LNB has plenty of gain I don’t think it is a real problem.

 

It is different if the frequency response (high pass characteristic) is based on the amplifiers in front of the mixer as then total system noise figure should be impacted.

 

Nevertheless I changed the reference of my LNB to move the IF signals up above 1 GHz and also use a TCXO.

 

Here is a description of the modification I made:

 

https://www.dropbox.com/s/bp61phg1e2vihun/Feed%20fuer%20EsHail-2%200v3.pdf?dl=0

 

Best regards

 

Matthias

 

 

Von: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io>Im Auftrag von Mr VILLAIN Laurent
Gesendet: Donnerstag, 27. Dezember 2018 11:20
An: main@sdr-radio.groups.io; main@sdr-radio.groups.io
Betreff: Re: [SDR-Radio] Es Hail 2 LNB Antidrift

 

The best solution for SSB is DL3YC idea.

 

You could see on his blog. Its the optimal one.

 

In all cases your 0,5 ppm TCXO's or crystals will be under the GPS signal in all cases.

 

Without modification of LNB, you will lost IF gain too, if not, lets share a spectrum capture.

 

Warm 73, no fight, just discuss. Laurent.

 


De :main@sdr-radio.groups.io de la part de Mr VILLAIN Laurent <f4aar@...>
Envoyé : jeudi, décembre 27, 2018 7:07 PM
À : main@sdr-radio.groups.io;main@sdr-radio.groups.io
Objet : Re: [SDR-Radio] Es Hail 2 LNB Antidrift

 

No fight, just discussion. Hi hi !

 

73 to all. Laurent.

 

 

On Thu, Dec 27, 2018 at 7:06 PM +0900, "Matthias Bopp" <matthias.bopp@...> wrote:

Dear Florian and Laurent,

 

no need to fight.

 

Both concepts have their place and will work.

 

I like the way Florian is addressing the problem with a closed loop concept measuring the received beacon frequency and adjusting the received frequency of other signals from the same transponder.

 

It would be perfect to have this feature in SDR-Radio as no additional hardware/software would be needed.

 

Possibly with a wide bandwidth SDR like the LimeSDR only one SDR is needed to do this. As SDR-Radio can already have multiple receivers within the

Bandwidth of the SDR this might be not too difficult for Simon to implement once he finds the time.

 

Best regards

 

Matthias

 

www.dd1us.de

 

 

Von:main@SDR-Radio.groups.io <main@SDR-Radio.groups.io>Im Auftrag vonfloroy42@...
Gesendet: Donnerstag, 27. Dezember 2018 10:57
An: main@SDR-Radio.groups.io
Betreff: Re: [SDR-Radio] Es Hail 2 LNB Antidrift

 

Clearly you don't understand what is meant.

I use 2 New.Gen RTL SDR sticks with TCXO 0,5 PPM and 2 PCs.

And this setup keeps ANY signal from the same sat within 10Hz FOR A DAY. 

With a unmodified Octagon OTSLO

vy73 DB8TF


Re: Es Hail 2 LNB Antidrift

Mr VILLAIN Laurent
 

Hello Matthias 73.



Did you check RF filter response too ?

DL3YC modification, LNB fully locked on GPS.

https://www.loetlabor-jena.de/doku.php?id=projekte:3cmplllnb:start



De : main@sdr-radio.groups.io de la part de Matthias Bopp <matthias.bopp@...>
Envoyé : jeudi, décembre 27, 2018 7:41 PM
À : main@sdr-radio.groups.io
Objet : Re: [SDR-Radio] Es Hail 2 LNB Antidrift
 

Hi Laurant,

 

As you have requested here is a spectrum sweep of a unmodified dual Octagon PLL LNB. LO was 9750 Mhz.

 

As you can see the gain at 600 MHz drops by about 5dB (roughly).

 

I assume this is the frequency response of the IF chain and as the LNB has plenty of gain I don’t think it is a real problem.

 

It is different if the frequency response (high pass characteristic) is based on the amplifiers in front of the mixer as then total system noise figure should be impacted.

 

Nevertheless I changed the reference of my LNB to move the IF signals up above 1 GHz and also use a TCXO.

 

Here is a description of the modification I made:

 

https://www.dropbox.com/s/bp61phg1e2vihun/Feed%20fuer%20EsHail-2%200v3.pdf?dl=0

 

Best regards

 

Matthias

 

 

Von: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io>Im Auftrag von Mr VILLAIN Laurent
Gesendet: Donnerstag, 27. Dezember 2018 11:20
An: main@sdr-radio.groups.io; main@sdr-radio.groups.io
Betreff: Re: [SDR-Radio] Es Hail 2 LNB Antidrift

 

The best solution for SSB is DL3YC idea.

 

You could see on his blog. Its the optimal one.

 

In all cases your 0,5 ppm TCXO's or crystals will be under the GPS signal in all cases.

 

Without modification of LNB, you will lost IF gain too, if not, lets share a spectrum capture.

 

Warm 73, no fight, just discuss. Laurent.

 


De :main@sdr-radio.groups.io de la part de Mr VILLAIN Laurent <f4aar@...>
Envoyé : jeudi, décembre 27, 2018 7:07 PM
À : main@sdr-radio.groups.io;main@sdr-radio.groups.io
Objet : Re: [SDR-Radio] Es Hail 2 LNB Antidrift

 

No fight, just discussion. Hi hi !

 

73 to all. Laurent.

 



On Thu, Dec 27, 2018 at 7:06 PM +0900, "Matthias Bopp" <matthias.bopp@...> wrote:

Dear Florian and Laurent,

 

no need to fight.

 

Both concepts have their place and will work.

 

I like the way Florian is addressing the problem with a closed loop concept measuring the received beacon frequency and adjusting the received frequency of other signals from the same transponder.

 

It would be perfect to have this feature in SDR-Radio as no additional hardware/software would be needed.

 

Possibly with a wide bandwidth SDR like the LimeSDR only one SDR is needed to do this. As SDR-Radio can already have multiple receivers within the

Bandwidth of the SDR this might be not too difficult for Simon to implement once he finds the time.

 

Best regards

 

Matthias

 

www.dd1us.de

 

 

Von:main@SDR-Radio.groups.io <main@SDR-Radio.groups.io>Im Auftrag vonfloroy42@...
Gesendet: Donnerstag, 27. Dezember 2018 10:57
An: main@SDR-Radio.groups.io
Betreff: Re: [SDR-Radio] Es Hail 2 LNB Antidrift

 

Clearly you don't understand what is meant.

I use 2 New.Gen RTL SDR sticks with TCXO 0,5 PPM and 2 PCs.

And this setup keeps ANY signal from the same sat within 10Hz FOR A DAY. 

With a unmodified Octagon OTSLO

vy73 DB8TF