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Re: Failed attempt on FO-29.



George,

     I think you need to check the "one true rule".

http://www.amsat.org/amsat/features/one_true_rule.html

When in doubt always tune the higher of the frequencies.  That would be
transmit in mode B and receive in mode J.

73,
Joe
kk0sd


----- Original Message ----- 
From: "George Henry" <ka3hsw@earthlink.net>
To: "amsat bb" <amsat-bb@amsat.org>
Sent: Tuesday, April 19, 2005 10:28 PM
Subject: Re: [amsat-bb] Failed attempt on FO-29.


> I'm sorry, but the idea that the CW ops "...will hear you and just move
> over" is simply unacceptable!
>
> While the practice of leaving one's uplink frequency constant and
adjusting
> the downlink for doppler may be the only practical way to operate in
> half-duplex, it is not good operating practice, in that your downlink
signal
> can drift into an on-going QSO, causing interference that you are REQUIRED
> BY LAW to avoid.  This is PRECISELY the reason that the recommended
> procedure has always been to adjust one's UPLINK to maintain a constant
> downlink frequency.
>
> Soap box mode off
>
> George, KA3HSW
>
>
> ----- Original Message ----- 
> From: <k_9qh_o@att.net>
> To: <AMSAT-bb@AMSAT.Org>
> Sent: Tuesday, April 19, 2005 8:05 PM
> Subject: Re: [amsat-bb] Failed attempt on FO-29.
>
>
> > Pat,
> >
> > Although I operate full-duplex, this is how I would approach FO-29 with
> > your set-up.
> >
> > Like a lot of people, I do not use doppler correction. I leave my
transmit
> > on a fixed frequency and tune my receiver down frequency to follow the
QSO
> > drift.
> >
> > Set your uplink at 146.960. Your downlink will come down about 435.840
> > and start drifting downward. You will be below the the crowded center of
> > the pass band.  Chances are good that somebody will hear you. If you are
> > too close to the edge of the pass band, your chance that someone hears
you
> > gets less.
> >
> > Announce in the CQ and to the station that you are half duplex. Since
you
> > have different dopplers, You will have to hunt each other after each
> > transmission (You will not be able to hear your downlink and zero beat
> > his/her frequency ).
> >
> > If your lucky and dopplers are close to the same, you will just track
each
> > other down frequency.
> >
> > There is some CW in this area, but they will hear you and just move
over.
> > There is plenty of room.
> >
> > GL and enjoy FO-29
> >
> > Mike
> > K9QHO
> ----
> Sent via amsat-bb@amsat.org. Opinions expressed are those of the author.
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----
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