Heard this evening so far on V/S: VE3NPC KB1RNI N3MVF AJ8P KC9ELU AK5V
I made an interesting recording of the S band transmitter last pass with WinRad and my SDR-IQ. The signal peaks about 45 db above the noise! This is with a 3 ft dish with a patch feed, preamp at the feed, and keps.it downconverter to a hamtronics converter to the -IQ.
I'll make the recording available to anyone who'd like it, and the software to play it is available for free at http://www.winrad.org/ . The catch is it is about 530Mb. Maybe someone has a website they would put it on? Otherwise if you want it, send me a SASE and blank CD or DVD and I'll make a copy for you.
73, Drew KO4MA
I had a problem hearing the pass. I see I made it into the bird. I used a grid parabolic 23.5 x 39.25 x 15 inches with a keps.it downconvertor/preamp. I could hear some stations fading in and out, but just wasn't strong enough to hear them all or myself.
That antenna seemed to work well for AO-40, but seemed light on this try. Next good pass, switching to a 17 turn Directive System circular polarization antenna. Seeing if my receive will be better for AO-51
Any opinions on the grid vs. cp?
Greg N3MVF
-----Original Message----- From: amsat-bb-bounces@amsat.org [mailto:amsat-bb-bounces@amsat.org] On Behalf Of Andrew Glasbrenner Sent: Monday, January 05, 2009 7:48 PM To: amsat-bb@amsat.org Subject: [amsat-bb] AO-51 V/S
Heard this evening so far on V/S: VE3NPC KB1RNI N3MVF AJ8P KC9ELU AK5V
I made an interesting recording of the S band transmitter last pass with WinRad and my SDR-IQ. The signal peaks about 45 db above the noise! This is with a 3 ft dish with a patch feed, preamp at the feed, and keps.it downconverter to a hamtronics converter to the -IQ.
I'll make the recording available to anyone who'd like it, and the software to play it is available for free at http://www.winrad.org/ . The catch is it
is about 530Mb. Maybe someone has a website they would put it on? Otherwise if you want it, send me a SASE and blank CD or DVD and I'll make a copy for you.
73, Drew KO4MA
_______________________________________________ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
Put the downconverter RIGHT at the antenna feedpoint. Any coax between the dish feed and the downconverter or preamp is usually disastrous.
Good Luck!
73, Drew
----- Original Message ----- From: "Greg Dober" almetco@comcast.net To: amsat-bb@amsat.org Sent: Monday, January 05, 2009 8:25 PM Subject: [amsat-bb] Re: AO-51 V/S
I had a problem hearing the pass. I see I made it into the bird. I used a grid parabolic 23.5 x 39.25 x 15 inches with a keps.it downconvertor/preamp. I could hear some stations fading in and out, but just wasn't strong enough to hear them all or myself.
That antenna seemed to work well for AO-40, but seemed light on this try. Next good pass, switching to a 17 turn Directive System circular polarization antenna. Seeing if my receive will be better for AO-51
Any opinions on the grid vs. cp?
Greg N3MVF
-----Original Message----- From: amsat-bb-bounces@amsat.org [mailto:amsat-bb-bounces@amsat.org] On Behalf Of Andrew Glasbrenner Sent: Monday, January 05, 2009 7:48 PM To: amsat-bb@amsat.org Subject: [amsat-bb] AO-51 V/S
Heard this evening so far on V/S: VE3NPC KB1RNI N3MVF AJ8P KC9ELU AK5V
I made an interesting recording of the S band transmitter last pass with WinRad and my SDR-IQ. The signal peaks about 45 db above the noise! This is with a 3 ft dish with a patch feed, preamp at the feed, and keps.it downconverter to a hamtronics converter to the -IQ.
I'll make the recording available to anyone who'd like it, and the software to play it is available for free at http://www.winrad.org/ . The catch is it
is about 530Mb. Maybe someone has a website they would put it on? Otherwise if you want it, send me a SASE and blank CD or DVD and I'll make a copy for you.
73, Drew KO4MA
Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
I clipped out 20 seconds of the SDR recording and it zips down to less than 5Mb. If anyone wants a copy emailed to them let me know. Just remember you'll need WinRad or maybe some other SDR program to listen/watch it. WinRad is free and can be downloaded online.
73, Drew KO4MA
----- Original Message ----- From: "Andrew Glasbrenner" glasbrenner@mindspring.com To: amsat-bb@amsat.org Sent: Monday, January 05, 2009 7:47 PM Subject: [amsat-bb] AO-51 V/S
Heard this evening so far on V/S: VE3NPC KB1RNI N3MVF AJ8P KC9ELU AK5V
I made an interesting recording of the S band transmitter last pass with WinRad and my SDR-IQ. The signal peaks about 45 db above the noise! This is with a 3 ft dish with a patch feed, preamp at the feed, and keps.it downconverter to a hamtronics converter to the -IQ.
I'll make the recording available to anyone who'd like it, and the software to play it is available for free at http://www.winrad.org/ . The catch is it is about 530Mb. Maybe someone has a website they would put it on? Otherwise if you want it, send me a SASE and blank CD or DVD and I'll make a copy for you.
73, Drew KO4MA
Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
Drew,
Worked N5UXT this AM, and even with the heavy rains here, good signal as always. It was ONLY S9+20 with a 30" dish. Definitely a HiFi mode, and one where you can have an honest QSO!
Alan WA4SCA
participants (3)
-
Alan P. Biddle -
Andrew Glasbrenner -
Greg Dober