Date   

Re: Pluto:: Spurious Emissions

Siegfried Jackstien
 

if you do not even know how to tune your (reference) frequency (and lnb offset) THEN I HIGHLY RECOMMEND TWO THINGS :

let ME take a closer look and

RTFM ;-)

dg9bfc sigi

Am 28.01.2022 um 21:40 schrieb Jacques RAMBAUD:

Sigi,

I need your help on how to set up my Pluto, you said '' your lnb setting should be (after tuning xo corection) set that you get the beacon closer to 750 '' What is xo correction ???

73 Jacques F6BKI



Le 27/01/2022 à 21:55, Siegfried Jackstien a écrit :
bonjour jacques

at first ... do not use tune tone at that high level (leila is already crying outcause you are way over beacon level!!)

second ... your pluto setup is NOT tuned correct (you should not have an xit setting of -10kc)

and third ... your lnb setting should be (after tuning xo correction) set that you get the beacon closer to 750 ;-)

dg9bfc sigi

ps if you do not know how to set up ... just ask .. i will help you


Am 27.01.2022 um 13:08 schrieb Jacques RAMBAUD:
taken transmiting a Tune

jacques F6BKI

Le 27/01/2022 à 11:40, Simon Brown a écrit :
OK,

May I have a screenshot taken while generating the signal shown in the spectrum analyser please.

Simon Brown, G4ELI
https://www.sdr-radio.com

-----Original Message-----
From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Jacques RAMBAUD
Sent: 27 January 2022 11:38
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Pluto:: Spurious Emissions

Hi Simon,

Here is the screen shot

73 jacques F6BKI

Le 27/01/2022 à 11:17, Simon Brown a écrit :
Hi,

You MUST add a proper screenshot of Console, I have no idea what settings you are using.

Simon Brown, G4ELI
https://www.sdr-radio.com

-----Original Message-----
From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Jacques RAMBAUD
Sent: 27 January 2022 10:58
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Pluto:: Spurious Emissions

Hello Simon and all,

Using now the SDR Console v3.1 build 2496 and still have the same RF spurious as before out of my Pluto , see attached picture.

Is it normal ?

73 jacques F6BKI























Re: Cant get Console to run

Dennis Matzen
 

Steve, did you get this resolved? If so what was it?
--
Dennis
KA6FUB


Re: Pluto:: Spurious Emissions

jdow
 

The conversion frequency setting in the device definition is the number you must fine tune. It's possible even if it's a bit awkward.

{^_^}

On 20220128 12:40:56, Jacques RAMBAUD wrote:

Sigi,

I need your help on how to set up my Pluto, you said '' your lnb setting should be (after tuning xo corection) set that you get the beacon closer to 750 '' What is xo correction ???

73 Jacques F6BKI



Le 27/01/2022 à 21:55, Siegfried Jackstien a écrit :
bonjour jacques

at first ... do not use tune tone at that high level (leila is already crying outcause you are way over beacon level!!)

second ... your pluto setup is NOT tuned correct (you should not have an xit setting of -10kc)

and third ... your lnb setting should be (after tuning xo correction) set that you get the beacon closer to 750 ;-)

dg9bfc sigi

ps if you do not know how to set up ... just ask .. i will help you


Am 27.01.2022 um 13:08 schrieb Jacques RAMBAUD:
taken transmiting a Tune

jacques F6BKI

Le 27/01/2022 à 11:40, Simon Brown a écrit :
OK,

May I have a screenshot taken while generating the signal shown in the spectrum analyser please.

Simon Brown, G4ELI
https://www.sdr-radio.com

-----Original Message-----
From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Jacques RAMBAUD
Sent: 27 January 2022 11:38
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Pluto:: Spurious Emissions

Hi Simon,

Here is the screen shot

73 jacques F6BKI

Le 27/01/2022 à 11:17, Simon Brown a écrit :
Hi,

You MUST add a proper screenshot of Console, I have no idea what settings you are using.

Simon Brown, G4ELI
https://www.sdr-radio.com

-----Original Message-----
From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Jacques RAMBAUD
Sent: 27 January 2022 10:58
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Pluto:: Spurious Emissions

Hello Simon and all,

Using now the SDR Console v3.1 build 2496 and still have the same RF spurious as before out of my Pluto , see attached picture.

Is it normal ?

73 jacques F6BKI

































Re: Pluto:: Spurious Emissions

Jacques RAMBAUD
 

Sigi,

I need your help on how to set up my Pluto, you said '' your lnb setting should be (after tuning xo corection) set that you get the beacon closer to 750 '' What is xo correction ???

73 Jacques F6BKI

Le 27/01/2022 à 21:55, Siegfried Jackstien a écrit :
bonjour jacques

at first ... do not use tune tone at that high level (leila is already crying outcause you are way over beacon level!!)

second ... your pluto setup is NOT tuned correct (you should not have an xit setting of -10kc)

and third ... your lnb setting should be (after tuning xo correction) set that you get the beacon closer to 750 ;-)

dg9bfc sigi

ps if you do not know how to set up ... just ask .. i will help you


Am 27.01.2022 um 13:08 schrieb Jacques RAMBAUD:
taken transmiting a Tune

jacques F6BKI

Le 27/01/2022 à 11:40, Simon Brown a écrit :
OK,

May I have a screenshot taken while generating the signal shown in the spectrum analyser please.

Simon Brown, G4ELI
https://www.sdr-radio.com

-----Original Message-----
From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Jacques RAMBAUD
Sent: 27 January 2022 11:38
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Pluto:: Spurious Emissions

Hi Simon,

Here is the screen shot

73 jacques F6BKI

Le 27/01/2022 à 11:17, Simon Brown a écrit :
Hi,

You MUST add a proper screenshot of Console, I have no idea what settings you are using.

Simon Brown, G4ELI
https://www.sdr-radio.com

-----Original Message-----
From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Jacques RAMBAUD
Sent: 27 January 2022 10:58
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Pluto:: Spurious Emissions

Hello Simon and all,

Using now the SDR Console v3.1 build 2496 and still have the same RF spurious as before out of my Pluto , see attached picture.

Is it normal ?

73 jacques F6BKI




















Re: Settings for USCG Weather on RTTY?

Kriss Kliegle KA1GJU
 

My Google hit's on 4006.5Hz pointed towards USCG websites... but I think Google read 406z as in 0406UTC?
Thanks for the replies!

Back to your regularly scheduled programming. 😬

73 Kriss KA1GJU


Missed spots PSKREPORTER

Ian McCabe
 

Hi all


Can anyone help me with a minor problem here.

I know there are a lot of smart guys on here, probably not the right place to ask on this subject but failed elsewhere


I listen FT8 160m most nights and run JTDX with PSKREPORTER and Gridtracker god bless its sole


I monitor mainly DX spots and notice despite perfect CQ,s with the locator  quite a few stations never make the PSKREPORTER map

A couple of friends using the same set up  and settings do not have this problem. EG It took over an hour and at least 13/14 CQ,s for XV1X  to appear.


I just use the basic settings in JTDX, any advice will be appreciated and apologies  for being off topic

I have heard this maybe server related but whose server I do not know, I have tried changing ports without success


Appreciate any advice


Regards Ian G0FYD

Airspy HF plus discovery

Wellbrook 80ft rotatable loop

Software JTDX



Re: Settings for USCG Weather on RTTY?

N2MS
 

Chris,

The USCG broadcasts weather broadcasts using Mode B SITOR. Is this the service you are asking about? Please see attached pdf.

Mike N2MS

On 01/28/2022 5:42 AM Kriss Kliegle KA1GJU <kliegle@...> wrote:


Anyone have success decoding WX from USCG on HF RTTY?
What settings do you use?
i.e.
Band Mode (USB or LSB)
Reverse
Baud Rate
Shift of 850Hz
Bits
Parity

73 Kriss KA1GJU


Re: Pluto:: Spurious Emissions

jdow
 

The basic problem with the transmit side and really the receive side as well is the math involved requires small fractions of a degree and small fractions of a dB precision in setting the nulling conditions. You can setup 50 dB to 60 dB with modest effort. But the components involved are slightly  temperature sensitive. So your 50 dB balance can decay to 40 dB or 30 dB fairly quickly. This was expected and shown in the Built In Test Equipment in the  prelaunch test equipment for the first set of GPS Phase 2B satellites. The signal is a pair of PN sequence modulated signals sent at exact quadrature on the carrier frequencies. The test equipment was required to be within something like a quarter of a degree of each other and the amplitudes had to be a fraction of a dB of correct. While aligning the BITE transmitter I noticed I could fall out of specification by simply moving one of the 3" or so long double shielded 1/4 inch cables connected to the quadrature modulators. It required pretty much lab conditions to keep full accuracy. The 1/4 degree is significantly worse than the 50 dB conditions as I recall the math.

On top of that you have received signals to consider. The isolation between TX and RX on Lime or Pluto is not very exciting. It is at a level that the settings for TX can mess with RX and vice versa. At least in the satellite case you folks get to play with the TX and RX local oscillators are frequencies that are not directly harmonically related. So the cross effects will be minimum except for the temperature increase when transmitting.

{^_^}

On 20220128 06:48:10, Jacques RAMBAUD wrote:

Hello all,

Thank you Sigi for the help,

The spurious I reported before was due to the fact that I used the XIT (Receive side)  to align my RX and TX frequency . I understand now that it as to be done with RIT, please confirm.

The spurious I see now are about -56 dBc up to a Drive level of 50% on the TX control which correspond to about - 16dBm  CW carrier (Tune mode) .

Reducing the  Drive level down tp 10% does not help much, about -58 dBc. At 70% Drive level I measure -55dBc in Tune mode (CW) .

On Tune mode (CW) the spurious are slightly lower if Bandwith is set at 1.2 MHz (select radio)  rather than  set at 750 KHz.

I do not know if the spurious can be lowered further , for QO-100 operation it is very acceptable but for terestrial I doubt .

73 jacques F6BKI




Le 27/01/2022 à 23:10, Siegfried Jackstien a écrit :
NEVER NEVER NEVER USE OFFSET ON THE BIRD!!! not with lime and not with the pluto

otherwise a spurii may cause trouble on another ones frequency!!

offset is ONLY used in local terrestrical contacts (that the carriers rest does not block your rx signal) but then you maybe would not use fullduplex but halfduplex

fullduplex may work with local contacts on a repeater but then also no offset is needed (repeater gives the offset so rx and tx are already not on same qrg)

Simon .. in my view you could/should complete delete the offset setting in radio setup and set it fixed to 0kc

if you have not found a good iq calibration (lime is a good example) then that carrier rest is at your 0hz spot and does not hurt other qsos (and you see it in if view and press tx calibration till it is gone) ... if you use an offset of say plus or minus 50 or 100 kc (or whatever) you may send out that carrier rest on another spot and do not see it (in first view)

you even may transmit outside the band (and thats for sure not ok!!)

so repeat ... NEVER NEVER EVER use offset tuning!!!!

greetz sigi dg9bfc

Am 27.01.2022 um 23:02 schrieb Simon Brown:
Don't forget optional offset tuning.

Simon Brown, G4ELI
https://www.sdr-radio.com

-----Original Message-----
From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Siegfried Jackstien
Sent: 27 January 2022 21:56
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Pluto:: Spurious Emissions

bonjour jacques

at first ... do not use tune tone at that high level (leila is already crying outcause you are way over beacon level!!)

second ... your pluto setup is NOT tuned correct (you should not have an xit setting of -10kc)

and third ... your lnb setting should be (after tuning xo correction) set that you get the beacon closer to 750 ;-)

dg9bfc sigi

ps if you do not know how to set up ... just ask .. i will help you


Am 27.01.2022 um 13:08 schrieb Jacques RAMBAUD:
taken transmiting a Tune

jacques F6BKI

Le 27/01/2022 à 11:40, Simon Brown a écrit :
OK,

May I have a screenshot taken while generating the signal shown in
the spectrum analyser please.

Simon Brown, G4ELI
https://www.sdr-radio.com

-----Original Message-----
From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf
Of Jacques RAMBAUD
Sent: 27 January 2022 11:38
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Pluto:: Spurious Emissions

Hi Simon,

Here is the screen shot

73 jacques F6BKI

Le 27/01/2022 à 11:17, Simon Brown a écrit :
Hi,

You MUST add a proper screenshot of Console, I have no idea what
settings you are using.

Simon Brown, G4ELI
https://www.sdr-radio.com

-----Original Message-----
From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf
Of Jacques RAMBAUD
Sent: 27 January 2022 10:58
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Pluto:: Spurious Emissions

Hello Simon and all,

Using now the SDR Console v3.1 build 2496 and still have the same RF
spurious as before out of my Pluto , see attached picture.

Is it normal ?

73 jacques F6BKI







































Re: Pluto:: Spurious Emissions

Jacques RAMBAUD
 

Hello all,

Thank you Sigi for the help,

The spurious I reported before was due to the fact that I used the XIT (Receive side)  to align my RX and TX frequency . I understand now that it as to be done with RIT, please confirm.

The spurious I see now are about -56 dBc up to a Drive level of 50% on the TX control which correspond to about - 16dBm  CW carrier (Tune mode) .

Reducing the  Drive level down tp 10% does not help much, about -58 dBc. At 70% Drive level I measure -55dBc in Tune mode (CW) .

On Tune mode (CW) the spurious are slightly lower if Bandwith is set at 1.2 MHz (select radio)  rather than  set at 750 KHz.

I do not know if the spurious can be lowered further , for QO-100 operation it is very acceptable but for terestrial I doubt .

73 jacques F6BKI

Le 27/01/2022 à 23:10, Siegfried Jackstien a écrit :
NEVER NEVER NEVER USE OFFSET ON THE BIRD!!! not with lime and not with the pluto

otherwise a spurii may cause trouble on another ones frequency!!

offset is ONLY used in local terrestrical contacts (that the carriers rest does not block your rx signal) but then you maybe would not use fullduplex but halfduplex

fullduplex may work with local contacts on a repeater but then also no offset is needed (repeater gives the offset so rx and tx are already not on same qrg)

Simon .. in my view you could/should complete delete the offset setting in radio setup and set it fixed to 0kc

if you have not found a good iq calibration (lime is a good example) then that carrier rest is at your 0hz spot and does not hurt other qsos (and you see it in if view and press tx calibration till it is gone) ... if you use an offset of say plus or minus 50 or 100 kc (or whatever) you may send out that carrier rest on another spot and do not see it (in first view)

you even may transmit outside the band (and thats for sure not ok!!)

so repeat ... NEVER NEVER EVER use offset tuning!!!!

greetz sigi dg9bfc

Am 27.01.2022 um 23:02 schrieb Simon Brown:
Don't forget optional offset tuning.

Simon Brown, G4ELI
https://www.sdr-radio.com

-----Original Message-----
From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Siegfried Jackstien
Sent: 27 January 2022 21:56
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Pluto:: Spurious Emissions

bonjour jacques

at first ... do not use tune tone at that high level (leila is already crying outcause you are way over beacon level!!)

second ... your pluto setup is NOT tuned correct (you should not have an xit setting of -10kc)

and third ... your lnb setting should be (after tuning xo correction) set that you get the beacon closer to 750 ;-)

dg9bfc sigi

ps if you do not know how to set up ... just ask .. i will help you


Am 27.01.2022 um 13:08 schrieb Jacques RAMBAUD:
taken transmiting a Tune

jacques F6BKI

Le 27/01/2022 à 11:40, Simon Brown a écrit :
OK,

May I have a screenshot taken while generating the signal shown in
the spectrum analyser please.

Simon Brown, G4ELI
https://www.sdr-radio.com

-----Original Message-----
From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf
Of Jacques RAMBAUD
Sent: 27 January 2022 11:38
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Pluto:: Spurious Emissions

Hi Simon,

Here is the screen shot

73 jacques F6BKI

Le 27/01/2022 à 11:17, Simon Brown a écrit :
Hi,

You MUST add a proper screenshot of Console, I have no idea what
settings you are using.

Simon Brown, G4ELI
https://www.sdr-radio.com

-----Original Message-----
From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf
Of Jacques RAMBAUD
Sent: 27 January 2022 10:58
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Pluto:: Spurious Emissions

Hello Simon and all,

Using now the SDR Console v3.1 build 2496 and still have the same RF
spurious as before out of my Pluto , see attached picture.

Is it normal ?

73 jacques F6BKI
























Re: Settings for USCG Weather on RTTY?

Ken Sejkora
 

Hi Kriss,

 

Are you sure that is US Coast Guard Weather RTTY on 4006 kHz USB, the frequency shown in the attached JPG?  I’m not aware of USCG using that frequency or frequency shift for WX transmissions.  I believe that frequency is commonly used by the US Navy for encrypted transmissions using STANAG-4481 FSK.  The 850 Hz shift is commonly used by NATO military groups when using STANAG-4481 FSK..

 

The USCG SITOR/RTTY frequencies on the US East Coast are 6314.0, 8416.5, 12579.0, and 16806.5 kHz.  Here’s a link to a reference for USCG weather-related broadcasts:

https://www.weather.gov/marine/uscg_broadcasts

 

As an aside, I haven’t used the digital decoder in SDRC very much, but instead pipe audio to either fldigi or MultiPSK because of better decoding.  If decoding NAVTEX on 490 or 518 kHz, those programs will work as well, but YanD is another very useful NAVTEX decoder.  If decoding USCG WEFAX (Weather FAX) transmissions, my go-to decoder is fldigi, but MultiPSK will do the job as well.  WEFAX frequencies on the East Coast of the USA are 4235.0, 6340.5, 9110.0, and 12750.0 kHz

 

Good luck and 73

 

Ken --  WBØOCV

 

From: Kriss Kliegle KA1GJU
Sent: Friday, January 28, 2022 05:42 AM
To: main@SDR-Radio.groups.io
Subject: [SDR-Radio] Settings for USCG Weather on RTTY?

 

Anyone have success decoding WX from USCG on HF RTTY?
What settings do you use?
i.e.
Band Mode (USB or LSB)
Reverse
Baud Rate
Shift of 850Hz
Bits
Parity

73 Kriss KA1GJU

Attachments:

 


Settings for USCG Weather on RTTY?

Kriss Kliegle KA1GJU
 

Anyone have success decoding WX from USCG on HF RTTY?
What settings do you use?
i.e.
Band Mode (USB or LSB)
Reverse
Baud Rate
Shift of 850Hz
Bits
Parity

73 Kriss KA1GJU


Re: Console Signal meter reading

Conrad, PA5Y
 

Hello Simon, I would certainly welcome the ability to calibrate the S-meter on a single tone for each of my transverter set-ups. I use a Perseus, LAN IP and occasionally a Afedri-AFE822x.

Regards

Conrad PA5Y

-----Original Message-----
From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Simon Brown via groups.io
Sent: 27 January 2022 22:00
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Console Signal meter reading

DUO is very probably not seeing the same signal level as the 3000.

I do agree that a per-radio signal calibration is needed.

Simon Brown, G4ELI
https://www.sdr-radio.com

-----Original Message-----
From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Mag loop Simon
Sent: 27 January 2022 20:50
To: main@sdr-radio.groups.io
Subject: Re: [SDR-Radio] Console Signal meter reading

Hi again

Thinking about this..I wonder if the duo with sdrc is “ not seeing “ what the 3000 is..ie duo is “ seeing “ the whole rx spectrum and hence not adjusting its signal level when the phaser is in operation? Sorry for poor explanation, but qro amps, antennas etc are my thing..still much to learn about sdr’s..

I do use antenna out to drive the duo, maybe i should use if out( with suitable if offset settings on sdrc)

Ps the Cornwall 160-40m special amp is coming along nicely..

Re s meter on sdrc vs 3000.. s1 on 3000= s3.5 on sdrc…s5 on 3000 =s4 on sdrc, would be nice to be able to adjust s meter or linearity on spectrum to match.


Thanks Other Simon








--
- + - + -
Please use https://forum.sdr-radio.com:4499/ when posting questions or problems.


Re: Beta features not in the current release ?? #sdrconsole

Simon Brown
 

And,

 

Ban plan is there: Ribbon Bar, View, Spectrum, Band Plan.

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Dennis Matzen
Sent: 28 January 2022 05:26
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Beta features not in the current release ?? #sdrconsole

 

Rich, here is the link to the Beta version of SRD Cosole: https://www.sdr-radio.com/download#Beta

The 3.1 release version you have is the stable 3.1 software. It does not get updated, it is locked. All new features are added to the beta versions. This will end up being the next stable version (3.2). 

I am running the latest beta and have enabled the band plan feature. I have edited it to show the US amateur band with sub-bands. It is a helpful feature. 
--
Dennis
KA6FUB


--
- + - + -
Please use https://forum.sdr-radio.com:4499/ when posting questions or problems.


Re: Beta features not in the current release ?? #sdrconsole

Dennis Matzen
 

Rich, here is the link to the Beta version of SRD Cosole: https://www.sdr-radio.com/download#Beta

The 3.1 release version you have is the stable 3.1 software. It does not get updated, it is locked. All new features are added to the beta versions. This will end up being the next stable version (3.2). 

I am running the latest beta and have enabled the band plan feature. I have edited it to show the US amateur band with sub-bands. It is a helpful feature. 
--
Dennis
KA6FUB


Beta features not in the current release ?? #sdrconsole

Rich
 

I came across a you tube video that demo's the SRD Console V3 Beta ...    In it has some features I would really like to have..
 I have the latest version on SDR Console  I have loaded   is  Version 3.1 build 2320  Compiled Aug 2 2021.  I thought this would contain all the features I say in the video but if does NOT ??!

I can not find how to do this.   Perhaps someone could direct me where I can get this beta version.  I especially like to see the the Band plan  ...  Being a ham that has been out operation for awhile  this is a very nice feature to highlight sections of  the band  .. and it can be modified if need  for other info ... Like  a bar at the bottom of the spectrum    it could reflect the CW portion  of the band  or   you might add  a digital mode like PSK  or RTTY  .. In the Beta version  it was very nicely done   ...  I am constantly having to configure UNO   and sometime I think  I spend more timing doing this ...then actually listening.   [Simon   I have followed this program forever ..  and I think it is the best !]
Wish there are more You Tube videos ...  with tips for all the different configurable optiond ...    I tried to get adjusted to UNO... but I have an ANAN 100   that I would love to get this program working with it...    Thanks to you  .. my retirement is going be better  !


Re: Pluto:: Spurious Emissions

Siegfried Jackstien
 

NEVER NEVER NEVER USE OFFSET ON THE BIRD!!! not with lime and not with the pluto

otherwise a spurii may cause trouble on another ones frequency!!

offset is ONLY used in local terrestrical contacts (that the carriers rest does not block your rx signal) but then you maybe would not use fullduplex but halfduplex

fullduplex may work with local contacts on a repeater but then also no offset is needed (repeater gives the offset so rx and tx are already not on same qrg)

Simon .. in my view you could/should complete delete the offset setting in radio setup and set it fixed to 0kc

if you have not found a good iq calibration (lime is a good example) then that carrier rest is at your 0hz spot and does not hurt other qsos (and you see it in if view and press tx calibration till it is gone) ... if you use an offset of say plus or minus 50 or 100 kc (or whatever) you may send out that carrier rest on another spot and do not see it (in first view)

you even may transmit outside the band (and thats for sure not ok!!)

so repeat ... NEVER NEVER EVER use offset tuning!!!!

greetz sigi dg9bfc

Am 27.01.2022 um 23:02 schrieb Simon Brown:

Don't forget optional offset tuning.

Simon Brown, G4ELI
https://www.sdr-radio.com

-----Original Message-----
From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Siegfried Jackstien
Sent: 27 January 2022 21:56
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Pluto:: Spurious Emissions

bonjour jacques

at first ... do not use tune tone at that high level (leila is already crying outcause you are way over beacon level!!)

second ... your pluto setup is NOT tuned correct (you should not have an xit setting of -10kc)

and third ... your lnb setting should be (after tuning xo correction) set that you get the beacon closer to 750 ;-)

dg9bfc sigi

ps if you do not know how to set up ... just ask .. i will help you


Am 27.01.2022 um 13:08 schrieb Jacques RAMBAUD:
taken transmiting a Tune

jacques F6BKI

Le 27/01/2022 à 11:40, Simon Brown a écrit :
OK,

May I have a screenshot taken while generating the signal shown in
the spectrum analyser please.

Simon Brown, G4ELI
https://www.sdr-radio.com

-----Original Message-----
From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf
Of Jacques RAMBAUD
Sent: 27 January 2022 11:38
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Pluto:: Spurious Emissions

Hi Simon,

Here is the screen shot

73 jacques F6BKI

Le 27/01/2022 à 11:17, Simon Brown a écrit :
Hi,

You MUST add a proper screenshot of Console, I have no idea what
settings you are using.

Simon Brown, G4ELI
https://www.sdr-radio.com

-----Original Message-----
From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf
Of Jacques RAMBAUD
Sent: 27 January 2022 10:58
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Pluto:: Spurious Emissions

Hello Simon and all,

Using now the SDR Console v3.1 build 2496 and still have the same RF
spurious as before out of my Pluto , see attached picture.

Is it normal ?

73 jacques F6BKI






















Re: Pluto:: Spurious Emissions

Siegfried Jackstien
 

hello jacques

i measured the spurious emissions on 13 cm from the pluto ... sdrc is not causing that ... it is an slight iq imbalance (so where it is depends on where you transmit) ... these spurii are lower when you use lower power but they are still there

thats why i recommend to add a bit more gain behind the pluto and use lower drive settings in it

to be in fcc rules you should keep the power VERY LOW

if you keep the pwr of the pluto at (example) -20 dbm you have -58 to -60 dbc (level of spurii compared to tune signal) and if then (depending on dish size and amp) your signal is at 40 db over noise the spurii are still 20 db below transpondernoise (and 40 db is already OVER beacon level!!)

so ... what you see and measure is quite normal on the pluto

sidenote a good warmed up pluto and a stable clock results in cleaner signals cause the iq calculation on boot shows better results

the chips spread a bit as the results differ a bit from boot up to boot up (no idea why .. maybe rounding errors on the iq calibration?!?) but if you keep the drive lower the spurii fall below transpondernoise and will not hurt anybody

greetz sigi dg9bfc


Am 27.01.2022 um 13:08 schrieb Jacques RAMBAUD:

taken transmiting a Tune

jacques F6BKI

Le 27/01/2022 à 11:40, Simon Brown a écrit :
OK,

May I have a screenshot taken while generating the signal shown in the spectrum analyser please.

Simon Brown, G4ELI
https://www.sdr-radio.com

-----Original Message-----
From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Jacques RAMBAUD
Sent: 27 January 2022 11:38
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Pluto:: Spurious Emissions

Hi Simon,

Here is the screen shot

73 jacques F6BKI

Le 27/01/2022 à 11:17, Simon Brown a écrit :
Hi,

You MUST add a proper screenshot of Console, I have no idea what settings you are using.

Simon Brown, G4ELI
https://www.sdr-radio.com

-----Original Message-----
From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Jacques RAMBAUD
Sent: 27 January 2022 10:58
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Pluto:: Spurious Emissions

Hello Simon and all,

Using now the SDR Console v3.1 build 2496 and still have the same RF spurious as before out of my Pluto , see attached picture.

Is it normal ?

73 jacques F6BKI

















Re: Pluto:: Spurious Emissions

Simon Brown
 

Don't forget optional offset tuning.

Simon Brown, G4ELI
https://www.sdr-radio.com

-----Original Message-----
From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Siegfried Jackstien
Sent: 27 January 2022 21:56
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Pluto:: Spurious Emissions

bonjour jacques

at first ... do not use tune tone at that high level (leila is already crying outcause you are way over beacon level!!)

second ... your pluto setup is NOT tuned correct (you should not have an xit setting of -10kc)

and third ... your lnb setting should be (after tuning xo correction) set that you get the beacon closer to 750 ;-)

dg9bfc sigi

ps if you do not know how to set up ... just ask .. i will help you


Am 27.01.2022 um 13:08 schrieb Jacques RAMBAUD:
taken transmiting a Tune

jacques F6BKI

Le 27/01/2022 à 11:40, Simon Brown a écrit :
OK,

May I have a screenshot taken while generating the signal shown in
the spectrum analyser please.

Simon Brown, G4ELI
https://www.sdr-radio.com

-----Original Message-----
From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf
Of Jacques RAMBAUD
Sent: 27 January 2022 11:38
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Pluto:: Spurious Emissions

Hi Simon,

Here is the screen shot

73 jacques F6BKI

Le 27/01/2022 à 11:17, Simon Brown a écrit :
Hi,

You MUST add a proper screenshot of Console, I have no idea what
settings you are using.

Simon Brown, G4ELI
https://www.sdr-radio.com

-----Original Message-----
From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf
Of Jacques RAMBAUD
Sent: 27 January 2022 10:58
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Pluto:: Spurious Emissions

Hello Simon and all,

Using now the SDR Console v3.1 build 2496 and still have the same RF
spurious as before out of my Pluto , see attached picture.

Is it normal ?

73 jacques F6BKI

























--
- + - + -
Please use https://forum.sdr-radio.com:4499/ when posting questions or problems.


Re: Pluto:: Spurious Emissions

Siegfried Jackstien
 

bonjour jacques

at first ... do not use tune tone at that high level (leila is already crying outcause you are way over beacon level!!)

second ... your pluto setup is NOT tuned correct (you should not have an xit setting of -10kc)

and third ... your lnb setting should be (after tuning xo correction) set that you get the beacon closer to 750 ;-)

dg9bfc sigi

ps if you do not know how to set up ... just ask .. i will help you


Am 27.01.2022 um 13:08 schrieb Jacques RAMBAUD:

taken transmiting a Tune

jacques F6BKI

Le 27/01/2022 à 11:40, Simon Brown a écrit :
OK,

May I have a screenshot taken while generating the signal shown in the spectrum analyser please.

Simon Brown, G4ELI
https://www.sdr-radio.com

-----Original Message-----
From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Jacques RAMBAUD
Sent: 27 January 2022 11:38
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Pluto:: Spurious Emissions

Hi Simon,

Here is the screen shot

73 jacques F6BKI

Le 27/01/2022 à 11:17, Simon Brown a écrit :
Hi,

You MUST add a proper screenshot of Console, I have no idea what settings you are using.

Simon Brown, G4ELI
https://www.sdr-radio.com

-----Original Message-----
From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Jacques RAMBAUD
Sent: 27 January 2022 10:58
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Pluto:: Spurious Emissions

Hello Simon and all,

Using now the SDR Console v3.1 build 2496 and still have the same RF spurious as before out of my Pluto , see attached picture.

Is it normal ?

73 jacques F6BKI

















Re: Console Signal meter reading

Simon Brown
 

DUO is very probably not seeing the same signal level as the 3000.

I do agree that a per-radio signal calibration is needed.

Simon Brown, G4ELI
https://www.sdr-radio.com

-----Original Message-----
From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Mag loop Simon
Sent: 27 January 2022 20:50
To: main@sdr-radio.groups.io
Subject: Re: [SDR-Radio] Console Signal meter reading

Hi again

Thinking about this..I wonder if the duo with sdrc is “ not seeing “ what the 3000 is..ie duo is “ seeing “ the whole rx spectrum and hence not adjusting its signal level when the phaser is in operation? Sorry for poor explanation, but qro amps, antennas etc are my thing..still much to learn about sdr’s..

I do use antenna out to drive the duo, maybe i should use if out( with suitable if offset settings on sdrc)

Ps the Cornwall 160-40m special amp is coming along nicely..

Re s meter on sdrc vs 3000.. s1 on 3000= s3.5 on sdrc…s5 on 3000 =s4 on sdrc, would be nice to be able to adjust s meter or linearity on spectrum to match.


Thanks Other Simon








--
- + - + -
Please use https://forum.sdr-radio.com:4499/ when posting questions or problems.

3581 - 3600 of 68784