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Re: FO-20 is dying



Dying,mabe not.....
Last week i was alone on the 20,and indeed sudenly the signal fell away.
A few day`s later there were a lot of stations active,and i was in qso with
Frank OAB
(we are both rather strong,and then it took more time before it fell away.
I think that if the battery is bad,it should fall away faster when ther is
more activity.
So maybe there is some other,maybe minor technical mishap.
We can at least be carefull by making q4 qso`s with just enaugh power.
And it we need a new bird,let the Japaneese build a new FO 20 replyca like
29 is.
(FO 38?)

Chris PA5RWE


----- Original Message -----
From: "Scott Townley" <nx7u@arrl.net>
To: <amsat-bb@AMSAT.Org>
Sent: Saturday, April 19, 2003 9:49 PM
Subject: [amsat-bb] FO-20 is dying


> I don't think there can be any doubt that FO-20 is near death (or is it
> better to say "non-operational status"?)
> Two things I've noticed over the past several weeks:
> 1. The bird will suddenly shut off completely in the middle of a
> pass.  Today that happened, with excellent signals, at 1938Z, which for my
> QTH is near TCA.  Sometimes it's late on station, so to speak, and in the
> last week I have seen several passes where it simply doesn't show up.
> 2. The Doppler profile has changed.  Used to be TCA was easily observed by
> a translation 145.950 up -> 435.850 down.  Now the downlink seems to be
> about 5kHz lower than usual...at AOS the beacon is at 435.8005 or so
> (instead of the usual 435.8055), and at TCA 145.950 gets you 435.845 or
> so.  This happens consistently with each pass that is operational.
>
> I would echo the previous comment that a linear LEO would be most
> appreciated.  Fortunately FO-29 seems to be in fine shape. However, I also
> recall that AO-40's original profile was such that I calculated I could
> work it mobile (not portable, mobile) either Mode B or J.  Don't know if
> the planned HEO will have that capability.  And I am not interested in
> starting another Mode B Holy War, by the way.
>
> Work it while you can, and hope to hear you doing it!
>
>
> Scott Townley NX7U
> Gilbert, AZ  DM43di
> http://members.cox.net/nx7u
>
> ----
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