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Re: My 'First AO40 FD ' question



Hi Greg,

I haven't seen the June QST article yet but it would have been much better
if they had suggested 150-200w EIRP as a starting point.  Unfortunately too
many new AO-40 operators will read numbers in QST and feel justified in
adopting a poor operating practice because they read it in an
"authoritative" source.  As a result it may very well become a
self-fulfilling prophecy.  It is very sad the Field Day has become an excuse
for poor operating habits.

Under normal conditions I run 5w into a 14 turn helix and have no trouble
accessing the satellite (140w EIRP).  My hope is that everyone will
encourage the new stations that are running too much power to back down a
bit.  Ultimately they are depriving everyone of being able to work stations
that are either unable or unwilling to run excessive uplink powers.

Sound like you'll have an excellent receiving set up and should be able to
hear everything on the satellite which is as or more important than having
lots of uplink power.

Good Luck,
Lee-KU4OS
(operating W4NLX/QRP on FD)

----- Original Message ----- 
From: "Greg LaHaie" <greglh@gte.net>
To: "amsat-bb" <amsat-bb@AMSAT.Org>
Sent: Wednesday, May 21, 2003 1:34 AM
Subject: [amsat-bb] My 'First AO40 FD ' question


> I'm preparing for my first AO40 FD with new portable antennas, hoping to
> uplink  with my FT847 and a 14 element CP GulfAlpha antenna on 70 cm.
>
> June's QST suggests at least 100W uplink power to an 11 element (or
> more) antenna for mode U/S operation, because Field Day is 'not like any
> other weekend'. This has me wondering exactly HOW much activity there
> might be! All I have is the AO40 QSO party to compare to. Is FD busier?
>  Is the minimum 100W uplink power an exageration?  Elsewhere I've read
> 'you better bring along your key' if you expect to make contacts without
> alot of power.
>
> Bye the way, I believe my downlink portable system will be sensitive
> enough to compare with my base station. (1 meter P* dish, 0.9 NF
> downverter)  I think I will hear the bird fine.
>
> Should I expect it to be a struggle to make voice QSO's due to
> congestion, or AGC levels?
>
> Any realistic advice appreciated!
>
> K7YDL
> Greg
>
> ----
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