[amsat-bb] introduction and request for information (APRS EMAIL)

Daniel Estévez daniel at destevez.net
Sat Dec 3 09:03:18 UTC 2016

El 02/12/16 a las 13:12, David Rysdam escribió:
> Robert Bruninga <bruninga at usna.edu> writes:
>> Its easy.  Use any AX.25 1200 baud packet system on 145.825 MHz when the
>> ISS comes over several tiems a day and send this packet:
> "It's easy" followed by "use any AX.25 1200 baud packet system" makes
> sense to you experienced hams, but that covers a lot of new ground for
> me.
> Right now, my only transmitter is an HT. I have successfully built at
> least one antenna for it for handheld use. I have not been particularly
> successful in using fldigi to talk to it.
> I think to follow your instructions, I would need a chain something like
> this:
>     computer with ax.25 software <-> fldigi <-> HT
>         <-> some unknown antenna
> Does that sound reasonable? I assume the stock antenna will be basically
> worthless here, is there a suggestion about what I should use? Something
> non-tracking would be ideal.

Hi David,

fldigi doesn't do 1200 baud AFSK, which is the modulation that you need
for the ISS and other APRS satellites. I recommend direwolf.


Dani EA4GPZ.

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