[amsat-bb] Re: AO-7 help

Rocky Jones orbitjet at hotmail.com
Sat Sep 26 10:35:03 PDT 2009

Drew.  you and I obviously have our differences.  However you are one of the folks on this board (and on the BOD) who consistently helps others on the sats...and does it in a "bravo zulu" (well done) manner

Robert WB5MZO

> Date: Sat, 26 Sep 2009 10:30:06 -0400
> From: glasbrenner at mindspring.com
> To: RSwart1 at twcny.rr.com
> CC: amsat-bb at amsat.org
> Subject: [amsat-bb] Re: AO-7 help
> >
> > I use the translation table provided by AMSAT and the books..
> > Have those programmed into the radio as splits..
> >
> > LSB 432.XXX up and USB 145.XXX down .
> > ( mode B like this morning )
> > I can hear PLENTY of QSO's.
> > I cannot make contact with anyone ..
> >
> >   
> Those splits are only right when Doppler is zero. Other wise, you have 
> around +/-7 khz shift to deal with. It's really tough to work AO-7 
> half-duplex with no Doppler tuning. REALLY tough. If you have a PC 
> nearby, I'd recommend trying to use SatPC32 to control the Doppler shift 
> during the pass. CAT cables are pretty cheap on Ebay, and really easy to 
> set up with the 897.
> Also, since you are using gain antennas AND are half duplex, you should 
> make sure you keep the power output low, like 5 watts or so, since you 
> can't hear if you our overdriving the uplink and making the satellite FM 
> for everyone.
> 73, Drew KO4MA
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