[amsat-bb] Re: Advice for transponder ops
kq6ea at pacbell.net
Sun Jun 28 08:51:16 PDT 2009
I also noticed a lot of "warbling" on the AO-7 stations I heard. I'm assuming this is the "FM'ing" I've read about. I cranked my power down to about 10 Watts on the AO-7 passes I tried to work, and my downlink sounded
"OK", but some guys had a very 'watery' sound.
I also noticed a couple of sats where the downlink seemed to "drop out" after I heard some very LOUD stations on them. I don't think it was receive blockage causing me to lose the signal, but it was something I never heard before.
--- On Sun, 6/28/09, n3tl at bellsouth.net <n3tl at bellsouth.net> wrote:
From: n3tl at bellsouth.net <n3tl at bellsouth.net>
Subject: [amsat-bb] Re: Advice for transponder ops
To: "Andrew Glasbrenner" <glasbrenner at mindspring.com>, amsat-bb at amsat.org
Date: Sunday, June 28, 2009, 8:45 AM
I called CQ multiple times on AO-7 in CW last night between 145.940 and 145.944 (downlink), and NOBODY was tuning down that far. I found that very disappointing, as I did the close proximity of all the stations on FO-29 and VO-52.
I believe a lot of us could have made a lot more contacts on the linear satellites if we'd just used the passband.
Thanks for this post Drew!
73 to all,
Tim - N3TL
-------------- Original message from "Andrew Glasbrenner" <glasbrenner at mindspring.com>: --------------
> I took this screen grab of this morning's eastern FO-29 pass, and what it
> shows is in my opinion very illustrative of a problem that is getting worse
> even on days other than Field Day.
> Spread out! There is no good reason that we should have a dozen operators
> fighting over the center 15 kHz of a 100 kHz wide transponder. Remember the
> gentlemen's agreement is the lower third is for CW, middle 1/3 is for mixed
> ops, and the upper 1/3 is for SSB. There is nothing magic about the Doppler
> shift at the very center of the passband that simple addition and
> subtraction can't duplicate elsewhere.
> Just my opinion, and please take it constructively.
> 73, Drew KO4MA
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