Was testing my new LNA today and saw digital signals for a few minutes on 437.492 MHz (http://bx2abt.com/main/data/_uploaded/image/20190418_1344-mystery.png). I usually use amsat.ar page to see what's floating above me, otherwise check sat info on DK3WN's site. At 5:44 UTC there was nothing in my sky that was using a frequency around 437.492. On DK3WN's site I also couldn't find anything.
So my question: what other sources of sat info or frequency lists are you using that could be helpful in my case?
Also, are there other sites that show what spacecrafts are located above you, right now, but can also show you that for a date/time in the past?
Cheers,
Hans
BX2ABT
JE9PEL maintains the most comprehensive list at http://www.ne.jp/asahi/hamradio/je9pel/satslist.htm
There are a number of satellites around 437.480-437.500 that might be what you heard.
73,
Paul, N8HM
On Thu, Apr 18, 2019 at 10:51 AM Hans BX2ABT via AMSAT-BB < amsat-bb@amsat.org> wrote:
Was testing my new LNA today and saw digital signals for a few minutes on 437.492 MHz (http://bx2abt.com/main/data/_uploaded/image/20190418_1344-mystery.png). I usually use amsat.ar page to see what's floating above me, otherwise check sat info on DK3WN's site. At 5:44 UTC there was nothing in my sky that was using a frequency around 437.492. On DK3WN's site I also couldn't find anything.
So my question: what other sources of sat info or frequency lists are you using that could be helpful in my case?
Also, are there other sites that show what spacecrafts are located above you, right now, but can also show you that for a date/time in the past?
Cheers,
Hans
BX2ABT
Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb
Hello Hans,
Congrats on your new LNA, thanks for your report on received signals.
There are plenty of satellites above us that can be around 437.492 KHz, most digital.
Some of them are SWISSSAT, JUNGNU, ESTCUBE, MO-76, CHALLENGER, D-SAT CO-57, CO-66, STARS, M-CUB, GRIFEX, ATHENOXAT, ESTAR, LO-87, STEP-CUBE, FO-98, a good place to check frequencies is on http://www.ne.jp/asahi/hamradio/je9pel/satslist.htm .
amsat.ar shows by default most popular & active satellites, next time to show all over your location either click on 'show all sats' or use:
http://amsat.org.ar/pass?type=all&z=3
Good luck on mistery sats investigation !.
73, lu7abf, Pedro
On 4/18/19, Hans BX2ABT via AMSAT-BB amsat-bb@amsat.org wrote:
Was testing my new LNA today and saw digital signals for a few minutes on 437.492 MHz (http://bx2abt.com/main/data/_uploaded/image/20190418_1344-mystery.png). I usually use amsat.ar page to see what's floating above me, otherwise check sat info on DK3WN's site. At 5:44 UTC there was nothing in my sky that was using a frequency around 437.492. On DK3WN's site I also couldn't find anything.
So my question: what other sources of sat info or frequency lists are you using that could be helpful in my case?
Also, are there other sites that show what spacecrafts are located above you, right now, but can also show you that for a date/time in the past?
Cheers,
Hans
BX2ABT
Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb
Hello Pedro,
Thanks for the tip to show all sats on amsat.org.ar. I will certainly bookmark that on my shack PC.
I forgot about the JE9PEL list, but after consulting that I am still not sure what it was. The problem with doppler shift is that you are not sure what the base frequency of the signal is. It could be as high as 437.505 or 437.510, who knows? It was definitely not Athenoxat-1, because they have a very different data burst look and timing, plus CW ID. I'll keep on looking, though. Who knows, maybe it's a pirate satellite, hi hi.
73 and good DX.
Hans
BX2ABT
On 04/18/2019 11:58 PM, Pedro Converso wrote:
Hello Hans,
Congrats on your new LNA, thanks for your report on received signals.
There are plenty of satellites above us that can be around 437.492 KHz, most digital.
Some of them are SWISSSAT, JUNGNU, ESTCUBE, MO-76, CHALLENGER, D-SAT CO-57, CO-66, STARS, M-CUB, GRIFEX, ATHENOXAT, ESTAR, LO-87, STEP-CUBE, FO-98, a good place to check frequencies is on http://www.ne.jp/asahi/hamradio/je9pel/satslist.htm .
amsat.ar shows by default most popular & active satellites, next time to show all over your location either click on 'show all sats' or use:
http://amsat.org.ar/pass?type=all&z=3
Good luck on mistery sats investigation !.
73, lu7abf, Pedro
On 4/18/19, Hans BX2ABT via AMSAT-BB amsat-bb@amsat.org wrote:
Was testing my new LNA today and saw digital signals for a few minutes on 437.492 MHz (http://bx2abt.com/main/data/_uploaded/image/20190418_1344-mystery.png). I usually use amsat.ar page to see what's floating above me, otherwise check sat info on DK3WN's site. At 5:44 UTC there was nothing in my sky that was using a frequency around 437.492. On DK3WN's site I also couldn't find anything.
So my question: what other sources of sat info or frequency lists are you using that could be helpful in my case?
Also, are there other sites that show what spacecrafts are located above you, right now, but can also show you that for a date/time in the past?
Cheers,
Hans
BX2ABT
Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb
participants (3)
-
Hans BX2ABT -
Paul Stoetzer -
Pedro Converso