[amsat-bb] Re: AO-7 Mode A
n8hm at arrl.net
Tue Nov 5 19:07:16 PST 2013
Use what you have to begin with!
I made one QSO via Mode A with AC0RA back in September using a just a
one meter diameter AlexLoop Walkham Portable Magnetic Loop on the
downlink. One thing to remember is that the receiver on Mode A is not
as sensitive as Mode B, so you need higher EIRP than on Mode B, probably
around 100 watts or so, for a decent downlink signal.
Audio of the middle of the pass is here:
Keep in mind that I'm a mile southwest of the Capitol in Washington, DC.
There are lots of buildings and lots of noise sources nearby. In the
middle of a lesser populated area, I bet I'd receive a pretty good
signal with this antenna. The QSO occurs about the 4 minute mark of the
video, with the satellite at about 60 degrees of elevation. I don't
think I was pointing my Arrow high enough while fiddling with
everything, but even then, with about 20-25 watts EIRP on 2 meters, the
downlink signal is going to be a bit weak.
Paul Stoetzer, N8HM
On 11/5/2013 7:10 PM, Kevin Deane wrote:
> Does anyone have any success in mode A? If so what type of 10m antenna?
> Sent via AMSAT-BB at amsat.org. Opinions expressed are those of the author.
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