Date   

Re: FT8 checking my signal

jdow
 

On the 3rd model move the left hand diode over in parallel with the right hand diode.

And with Schottky diode pair the limiting voltage is in the approximate range of 0.3V not 0.7v. This may introduce distortion in bad cases.

{^_^}

On 20210405 23:51:01, Bill Walch wrote:

Bammi,

The original photo shows two Schlocky Diodes (1N5817) in opposite polarities, forming a bi-directional clamp. This is illustrated in the diagram (c) below. The major difference between a typical signal diode (rectifier) is that a Schlocky Diode is extremely fast switching, in the order of uS. You can see datasheet for the 1N5817/8/9 HERE. This diode is rated at 10A maximum Forward rms current. How that relates to induced RF, is unknown to me. However, I would assume that if the Tx and Rx antennas are separated at some distance, the amount of RF energy seen at this clamp should be low enough to prevent damage to the diodes, again, speculation on my part. Hope this helps.

73's, Bill




On 4/4/2021 5:57 PM, bammi via groups.io wrote:
Circuit and Diode type and model would help me understand how it is working. The picture is not speaking a thousand words unfortunately :-)

73 de k1jbd
bammi



Re: FT8 checking my signal

Bill Walch
 

Bammi,

The original photo shows two Schlocky Diodes (1N5817) in opposite polarities, forming a bi-directional clamp. This is illustrated in the diagram (c) below. The major difference between a typical signal diode (rectifier) is that a Schlocky Diode is extremely fast switching, in the order of uS. You can see datasheet for the 1N5817/8/9 HERE. This diode is rated at 10A maximum Forward rms current. How that relates to induced RF, is unknown to me. However, I would assume that if the Tx and Rx antennas are separated at some distance, the amount of RF energy seen at this clamp should be low enough to prevent damage to the diodes, again, speculation on my part. Hope this helps.

73's, Bill




On 4/4/2021 5:57 PM, bammi via groups.io wrote:

Circuit and Diode type and model would help me understand how it is working. The picture is not speaking a thousand words unfortunately :-)

73 de k1jbd
bammi


Re: GTX 1650 Super graphics card?

George Stein - NJ3H
 

Is it the gtx 1650 Super? You want the Super. 

George


On Mon, Apr 5, 2021 at 10:44 PM, Miguel, EA4BAS
<ea4bas@...> wrote:

See: https://www.pccomponentes.com/asus-tuf-gaming-geforce-gtx-1650-oc-edition-4-gb-gddr6?utm_campaign=nVidia+Shop+%28Batch%29&utm_source=hatch&utm_content=s1617684933653jme3a52378

It is Ready to ship ….

 

73, Miguel

EA4BAS

 

De: main@SDR-Radio.groups.io [mailto:main@SDR-Radio.groups.io] En nombre de jdow
Enviado el: martes, 6 de abril de 2021 2:30
Para: main@SDR-Radio.groups.io
Asunto: Re: [SDR-Radio] GTX 1650 Super graphics card?

 

Alas - out of stock now.
{o.o}

On 20210405 13:51:46, Frank wrote:

Max,

Thanks for the mention of the EVGA GeForce GTX 1650 Super graphics card (https://www.evga.com/products/product.aspx?pn=04G-P4-1357-KR). I was able to find a new one quite a bit cheaper than the crazy prices that comparable cards are going for now.

Is there anything to configure with this card that you've found helpful? Or just use it as-is out of the box?

Frank

 


Re: GTX 1650 Super graphics card?

Miguel, EA4BAS
 

See: https://www.pccomponentes.com/asus-tuf-gaming-geforce-gtx-1650-oc-edition-4-gb-gddr6?utm_campaign=nVidia+Shop+%28Batch%29&utm_source=hatch&utm_content=s1617684933653jme3a52378

It is Ready to ship ….

 

73, Miguel

EA4BAS

 

De: main@SDR-Radio.groups.io [mailto:main@SDR-Radio.groups.io] En nombre de jdow
Enviado el: martes, 6 de abril de 2021 2:30
Para: main@SDR-Radio.groups.io
Asunto: Re: [SDR-Radio] GTX 1650 Super graphics card?

 

Alas - out of stock now.
{o.o}

On 20210405 13:51:46, Frank wrote:

Max,

Thanks for the mention of the EVGA GeForce GTX 1650 Super graphics card (https://www.evga.com/products/product.aspx?pn=04G-P4-1357-KR). I was able to find a new one quite a bit cheaper than the crazy prices that comparable cards are going for now.

Is there anything to configure with this card that you've found helpful? Or just use it as-is out of the box?

Frank

 


Re: GTX 1650 Super graphics card?

Simon Brown
 

Doesn’t look like there will be much stock of anything this year.

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of jdow
Sent: 06 April 2021 01:30
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] GTX 1650 Super graphics card?

 

Alas - out of stock now.
{o.o}

On 20210405 13:51:46, Frank wrote:

Max,

Thanks for the mention of the EVGA GeForce GTX 1650 Super graphics card (https://www.evga.com/products/product.aspx?pn=04G-P4-1357-KR). I was able to find a new one quite a bit cheaper than the crazy prices that comparable cards are going for now.

Is there anything to configure with this card that you've found helpful? Or just use it as-is out of the box?

Frank

 


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


Re: GTX 1650 Super graphics card?

jdow
 

Alas - out of stock now.
{o.o}

On 20210405 13:51:46, Frank wrote:

Max,

Thanks for the mention of the EVGA GeForce GTX 1650 Super graphics card (https://www.evga.com/products/product.aspx?pn=04G-P4-1357-KR). I was able to find a new one quite a bit cheaper than the crazy prices that comparable cards are going for now.

Is there anything to configure with this card that you've found helpful? Or just use it as-is out of the box?

Frank




Re: GTX 1650 Super graphics card?

Frank O'Donnell K6FOD
 

Max,

Thanks for the mention of the EVGA GeForce GTX 1650 Super graphics card (https://www.evga.com/products/product.aspx?pn=04G-P4-1357-KR). I was able to find a new one quite a bit cheaper than the crazy prices that comparable cards are going for now.

Is there anything to configure with this card that you've found helpful? Or just use it as-is out of the box?

Frank



Re: Pluto / F5OEO Help Please

Alan
 

build a ringfeeed (surpresses sidelobes a bit)
depending how far you push lnb trough ringfeed you can finetune for
an f/d 0.36 to 0.42 (similar can be seen on all c band lnb)

Sigi,

Yes that is the correct and best way.
You will then get +3dB.
But the tube is easy, it should fit behind the original cover.

73 Alan G4ZFQ


Re: Connected radio tuning problem

jdow
 

If he has a modern rtlsdr dongle don't bother to adjust ppm. For "barely adquate" accuracy adjust the conversion offset and eat the errors at other frequencies. If he can make it work across the TS-480 tuning range on SSB he'll be exceptionally lucky. Use SDRC as a panadapter and leave the signal reeption to the TS-480.

{^_^}

On 20210405 07:55:04, Siegfried Jackstien wrote:

maybe you need a different ppm correction PLUS setting if frequency a bit different

set if 5 kc higher or lower and correct then the ppm value that you are backin sync (try out in what direction)

so in principle your setup works ... but is not finetuned correct

greetz sigi dg9bfc

Am 05.04.2021 um 09:53 schrieb Richard Ebbs:
Hi,
I've set up my TS-480 to SDR-Console v3 via HRD/Omnirig, it's all working fine. The radio tracks the software etc.
I'm using an RTL v3 dongle and it's working fine too.
The problem is, that when I click on the signal in the software, it jumps to that signal, you hear that signal through SDR-Console audio, then the radio jumps about 5kHz too far. You briefly hear the signal I've clicked on, but then the radio tunes too high! I'm in IF Mode (1st IF =73.095MHz). 
I did have to apply a 195PPM adjustment to match the RTL frequency with the Radio displayed frequency.
Am I doing it right, you click on a signal, and the radio tunes to it?
Any ideas?
de Richard G0MIE


Re: Pluto / F5OEO Help Please

Simon Brown
 

Will measure tomorrow, forgot.

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: 05 April 2021 18:58
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Pluto / F5OEO Help Please

0.41 ... i was close enough hi hi

what diameter are the screws??

dg9bfc sigi

ps ... clear spraypaint and raincap will be added tomorrow

Am 05.04.2021 um 15:19 schrieb Simon Brown:
Ah,

I think my FD is 0.41 https://www.primesat.eu/satellite_dishes_prime_focus_1400cm.php .

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: 05 April 2021 16:07
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Pluto / F5OEO Help Please

cut the horn

build a ringfeeed (surpresses sidelobes a bit)

depending how far you push lnb trough ringfeed you can finetune for an f/d 0.36 to 0.42 (similar can be seen on all c band lnb)

see what i made last night ;-)

and cause simon did not answer i "guessed" his dish is around 0.4

greetz sigi dg9bfc


Am 05.04.2021 um 08:45 schrieb Alan via groups.io:

what is f/d on that cf dish??
wih a normal lnb you only use half the dish size
Or put a piece of 21mm tube in place of the horn gives ~+2dB

73 Alan G4ZFQ


















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


Re: Connected radio tuning problem

jdow
 

I see lots of problems here likely due to not understanding the system you have created. You have at least two different oscillators that may not be where you think they are. You must break it out and solve each one individually.

First disconnect from the radio and calibrate the rtlsdr dongle itself. Set the ppm offset to zero. If this is a recent dongle, when you tune to a known frequency it should be relatively close. Do not bother to try to adjust the ppm setting. The dongle is more accurate than most sources you can find. If it is a very old dongle with potentially big offsets then kalibrate-rtl is needed. This link has a description for using it and a windows version of kalibrate-rtl. One the calibration value is known it can be entered into sdr-radio and you are half way there. (Of course, if you have an old rtl dongle then figure you are calibrated now but not 10 minutes from now. Those old ones drift with temperature.)

Next you have to calibrate your TS-480. You should be able to tune into WWV and have the frequency reading accurate. Use two different frequencies. BOTH should be spot on. If they are not there are two oscillators in the TS-480 to tune correctly if you can get to both. The radio's service manual should describe how to do this. If you cannot get one then tune as well as you can with equal errors on the same side of two different WWV frequencies.

With the TS-480 setup now you have to figure out the real IF frequency to which you are tapped. Use that as a start for the conversion offset. Adjust the conversion offset until you get a match. It'll drift some. ALL relatively cheap oscillators drift to varying degree with temperature. As a general rule they will drift differently. So there is nothing to fix it. And be aware that the rtl dongle's ppm setting is 70 Hz steps at 70 MHz, So getting 1 Hz level agreement is out of the question. Use SDR-Radio as a pan-adapter. Leave the QSO reception to the TS-480.

{^_^}

On 20210405 02:53:16, Richard Ebbs wrote:

Hi,
I've set up my TS-480 to SDR-Console v3 via HRD/Omnirig, it's all working fine. The radio tracks the software etc.
I'm using an RTL v3 dongle and it's working fine too.
The problem is, that when I click on the signal in the software, it jumps to that signal, you hear that signal through SDR-Console audio, then the radio jumps about 5kHz too far. You briefly hear the signal I've clicked on, but then the radio tunes too high! I'm in IF Mode (1st IF =73.095MHz). 
I did have to apply a 195PPM adjustment to match the RTL frequency with the Radio displayed frequency.
Am I doing it right, you click on a signal, and the radio tunes to it?
Any ideas?
de Richard G0MIE


Re: Pluto / F5OEO Help Please

Siegfried Jackstien
 

0.41 ... i was close enough hi hi

what diameter are the screws??

dg9bfc sigi

ps ... clear spraypaint and raincap will be added tomorrow

Am 05.04.2021 um 15:19 schrieb Simon Brown:

Ah,

I think my FD is 0.41 https://www.primesat.eu/satellite_dishes_prime_focus_1400cm.php .

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: 05 April 2021 16:07
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Pluto / F5OEO Help Please

cut the horn

build a ringfeeed (surpresses sidelobes a bit)

depending how far you push lnb trough ringfeed you can finetune for an f/d 0.36 to 0.42 (similar can be seen on all c band lnb)

see what i made last night ;-)

and cause simon did not answer i "guessed" his dish is around 0.4

greetz sigi dg9bfc


Am 05.04.2021 um 08:45 schrieb Alan via groups.io:

what is f/d on that cf dish??
wih a normal lnb you only use half the dish size
Or put a piece of 21mm tube in place of the horn gives ~+2dB

73 Alan G4ZFQ











Re: Pluto / F5OEO Help Please

Simon Brown
 

-----Original Message-----
From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Siegfried Jackstien
Sent: 05 April 2021 16:07
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Pluto / F5OEO Help Please

cut the horn

build a ringfeeed (surpresses sidelobes a bit)

depending how far you push lnb trough ringfeed you can finetune for an f/d 0.36 to 0.42 (similar can be seen on all c band lnb)

see what i made last night ;-)

and cause simon did not answer i "guessed" his dish is around 0.4

greetz sigi dg9bfc


Am 05.04.2021 um 08:45 schrieb Alan via groups.io:

what is f/d on that cf dish??
wih a normal lnb you only use half the dish size
Or put a piece of 21mm tube in place of the horn gives ~+2dB

73 Alan G4ZFQ












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


Re: Pluto / F5OEO Help Please

Siegfried Jackstien
 

cut the horn

build a ringfeeed (surpresses sidelobes a bit)

depending how far you push lnb trough ringfeed you can finetune for an f/d 0.36 to 0.42 (similar can be seen on all c band lnb)

see what i made last night ;-)

and cause simon did not answer i "guessed" his dish is around 0.4

greetz sigi dg9bfc


Am 05.04.2021 um 08:45 schrieb Alan via groups.io:

what is f/d on that cf dish??
wih a normal lnb you only use half the dish size
Or put a piece of 21mm tube in place of the horn gives ~+2dB

73 Alan G4ZFQ




Re: Connected radio tuning problem

Siegfried Jackstien
 

maybe you need a different ppm correction PLUS setting if frequency a bit different

set if 5 kc higher or lower and correct then the ppm value that you are backin sync (try out in what direction)

so in principle your setup works ... but is not finetuned correct

greetz sigi dg9bfc

Am 05.04.2021 um 09:53 schrieb Richard Ebbs:

Hi,
I've set up my TS-480 to SDR-Console v3 via HRD/Omnirig, it's all working fine. The radio tracks the software etc.
I'm using an RTL v3 dongle and it's working fine too.
The problem is, that when I click on the signal in the software, it jumps to that signal, you hear that signal through SDR-Console audio, then the radio jumps about 5kHz too far. You briefly hear the signal I've clicked on, but then the radio tunes too high! I'm in IF Mode (1st IF =73.095MHz). 
I did have to apply a 195PPM adjustment to match the RTL frequency with the Radio displayed frequency.
Am I doing it right, you click on a signal, and the radio tunes to it?
Any ideas?
de Richard G0MIE


Sysop of the "ARRL_noise_1" on this forum?

Kriss Kliegle KA1GJU
 

FYI... Your server has been stuck for +20 days and since there is no 'real' name or callsign attached to this server, nobody can inform you of it's status. ☹
Also, the software running the server is extremely out of date, ver 3.0.26 is available and there has been many server improvements since 3.0.15!

All we know is that it's located somewhere in Grid Square DM52:




 http://onairv3.sdrspace.com/onair-v3.xml





ARRL_noise_1 Location is DM52. Antenna is Beverage array.
Version 3.0.15 build 1658
1 Airspy HF+ f=7.000.500, bw=0.0 kHz   20 04:53:11 United States
    10 f=0, bw=0.0 kHz   19 17:55:42 Moscow, 101194, Russia
    2 f=0, bw=0.0 kHz   19 20:49:25 Pilsen, Okres Plzen-Mesto, Plzensky kraj, 318 00, Czechia
    3 f=0, bw=0.0 kHz   19 20:49:11 Pilsen, Okres Plzen-Mesto, Plzensky kraj, 318 00, Czechia
    4 f=0, bw=0.0 kHz   19 20:45:28 Pilsen, Okres Plzen-Mesto, Plzensky kraj, 318 00, Czechia
    5 f=0, bw=0.0 kHz   19 19:41:16 Denver, Colorado, 80222, United States
    6 f=0, bw=0.0 kHz   19 19:32:19 United States
    7 f=0, bw=0.0 kHz   19 19:32:12 United States
    8 f=0, bw=0.0 kHz   19 18:43:06 France
    9 f=0, bw=0.0 kHz   19 17:56:53 Moscow, 101194, Russia


Re: Stand-Alone Satellite Tracking Program #satellites #request #workspace #future

SM0TGU
 

No need to be a separate program. Just do not start a SDR receiver. I do that all the time.
/Lars 


Connected radio tuning problem

Richard Ebbs
 

Hi,
I've set up my TS-480 to SDR-Console v3 via HRD/Omnirig, it's all working fine. The radio tracks the software etc.
I'm using an RTL v3 dongle and it's working fine too.
The problem is, that when I click on the signal in the software, it jumps to that signal, you hear that signal through SDR-Console audio, then the radio jumps about 5kHz too far. You briefly hear the signal I've clicked on, but then the radio tunes too high! I'm in IF Mode (1st IF =73.095MHz). 
I did have to apply a 195PPM adjustment to match the RTL frequency with the Radio displayed frequency.
Am I doing it right, you click on a signal, and the radio tunes to it?
Any ideas?
de Richard G0MIE


Re: Pluto / F5OEO Help Please

Alan
 

what is f/d on that cf dish??
wih a normal lnb you only use half the dish size
Or put a piece of 21mm tube in place of the horn gives ~+2dB

73 Alan G4ZFQ


Re: Pluto / F5OEO Help Please

Siegfried Jackstien
 

nut 13mm?!? (so 8mm diameter??)

what is f/d on that cf dish??

wih a normal lnb you only use half the dish size

greetz sigi

Am 05.04.2021 um 05:50 schrieb Si_._,_._,_

6981 - 7000 of 68784