want to have some fun ?
For those that are bored with 1k2 from cubesats ..
GRIFEX (437.485) is this week sending data at 19k2 (FM).
Quite easy to decode using - 16 element horizontal yagi - SSB preamp + 10 meters Aircell coax - FUNCube dongle (the old one) - SDR# (on Windows 10) - UZ7HO soundmodem (on Windows 10)
Remarkable to see how reliable & stable data download can be at higher speeds. With no new investment in equipment !
It may not be for many more days, so give it a try before it switches back to 9k6 (did you try that already?).
Henk, PA3GUO
El 29/02/16 a las 13:26, PA3GUO escribió:
For those that are bored with 1k2 from cubesats ..
GRIFEX (437.485) is this week sending data at 19k2 (FM).
Quite easy to decode using
- 16 element horizontal yagi
- SSB preamp + 10 meters Aircell coax
- FUNCube dongle (the old one)
- SDR# (on Windows 10)
- UZ7HO soundmodem (on Windows 10)
Remarkable to see how reliable & stable data download can be at higher speeds. With no new investment in equipment !
It may not be for many more days, so give it a try before it switches back to 9k6 (did you try that already?).
Hi,
Back when these birds where launched I successfully received several 19k6 packets from FIREBIRD FU-3 and FU-4 with just a handheld Arrow yagi (7 elements on UHF) and a couple meters of coax into a FUNCube Dongle Pro+. I would expect the same to be possible with GRIFEX. Just take a high elevation pass, where path loss is lower. Signals were quite strong with the 7 element yagi, so perhaps even a lower gain antenna can be used. I think the FIREBIRD sats still transmit 19k2, so you may want to try these also.
As software, I used direwolf.
73 and good luck decoding GRIFEX in 19k2,
Dani EA4GPZ.
Hi Henk,
What a huge signal from Grifex! It was 25 dB or so out of the noise. I used HDSDR with my original Funcube. HDSDR was feeding VAC to the UZ7HO modem software.
About the only text I saw in the clear was FM CQ to KD8SPS.
Antenna here is a KLM 40cx with SSB preamp.
Mike
On 2/29/2016 7:26 AM, PA3GUO wrote:
For those that are bored with 1k2 from cubesats ..
GRIFEX (437.485) is this week sending data at 19k2 (FM).
Quite easy to decode using
- 16 element horizontal yagi
- SSB preamp + 10 meters Aircell coax
- FUNCube dongle (the old one)
- SDR# (on Windows 10)
- UZ7HO soundmodem (on Windows 10)
Remarkable to see how reliable & stable data download can be at higher speeds. With no new investment in equipment !
It may not be for many more days, so give it a try before it switches back to 9k6 (did you try that already?).
Henk, PA3GUO
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participants (3)
-
Dani EA4GPZ -
Mike Seguin -
PA3GUO