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Re: Trying AO-40



I wonder about 435.700 MHz as a corresponding uplink frequency for the
beacon. For me it's abt. 435.666 MHz.
On my website I have compiled some information about
preparing for AO-40 from my experience.

73 de Hardy DC8TS/KC2DMA

Reinhard Schulze
Elsa-Brändström-Str. 35
D-53879 Euskirchen
Federal Republic of GERMANY
dc8ts@amsat.org
http://go.to/dc8ts
----- Original Message -----
From: "Jon Ogden" <na9d@speakeasy.net>
To: "David Rush" <david@davidarush.com>
Cc: <amsat-bb@AMSAT.Org>
Sent: Sunday, June 01, 2003 2:06 PM
Subject: Re: [amsat-bb] Trying AO-40


>
> On Saturday, May 31, 2003, at 23:40 America/Chicago, David Rush wrote:
>
> > With further research, if I'm reading the schedule correctly the U/S
> > transponder was turned off at MA 100, which I believe corresponded to
> > about 11:00 MDT (13:00 EDT).  Am I right?  That would explain my
> > difficulty in finding my downlink, as the time I spent mucking around
> > to get the uplink going may well have spanned 11am.
> >
> If that was the time the transponder turned off, then yes, you won't
> make it through.  So I hope you can get through perhaps today if
> there's a good pass.
>
> > I'm confused about one thing in AMSAT's AO-40 FAQ, under "How do I
> > find my own signal on AO-40?".  It says to first find the beacon at
> > 2401.323.  By my calculations, the corresponding uplink to the beacon
> > would be 435.702 - right?  The FAQ says "a good frequency for U/S
> > usage is 435.700".  Isn't that going to put you almost on top of the
> > beacon, a big no-no???
>
> You are exactly correct!  And maybe this solves the question of why
> some people tune up on the beacon.  It's been alleged that it's because
> they can't hear the beacon.  But if that's what the FAQ says, it would
> be confusing.  I think that what the FAQ is "trying" to say is:
>
> 1.) Find the Beacon
> 2.) The typical corresponding uplink frequency for the beacon is
> 435.700.
> 3.) Lock your VFOs and make sure you use reverse tracking.
> 4.) Move off the beacon to a clear spot.
> 5.) Key up.   You should find your signal pretty close.  You may need
> to adjust your downlink only up or down slightly to find yourself.
>
> Now the control crew has asked that stations stay 20 to 30 kHz away
> from the beacon.  That way, there's no chance of QRMing it.
>
> Good luck getting on the bird!
>
> 73,
>
> Jon
> NA9D
>
> -------------------------------------
> Jon Ogden
> NA9D (ex: KE9NA)
>
> Citizen of the People's Democratic Republik of Illinois
>
> Life Member: ARRL, NRA
> Member:  AMSAT, DXCC
>
> Ham Radio Webpage: http://www.qsl.net/na9d   <- Updated on 1/12/03!!!
> Digital Photography Page:
> http://homepage.mac.com/jogden/Photography.html
>
> "Between Stimulus and Response is our greatest freedom - the freedom to
> choose."
>
>                                  - Dr. Steven Covey
>
> ----
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----
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