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Re: 2.4GHz QRM



They were also 50 times lower in altitude (800 km vs. 40000 km) than Eagle.

73,

John
KD6OZH

----- Original Message ----- 
From: "George Henry" <ka3hsw@earthlink.net>
To: "amsat bb" <amsat-bb@AMSAT.Org>
Sent: Monday, July 31, 2006 23:40 UTC
Subject: Re: [amsat-bb] 2.4GHz QRM


> Hear, hear!!  How I miss the simplicity of Mode A on RS-10/11, RS-12/13
> (Mode K, too), and RS-15.  A simple 10-Meter dipole in the attic, a
> turnstile on a tripod in the driveway (later, an Eggbeater on the roof)
and
> oh, the contacts I made with my old Drake twins with the TC-2 transmit
> converter!  And the dismay of the guy on the other end when he found out I
> was running "hollow state"!!  Nice, solid signals on the downlink, plenty
of
> other users and lots of  kHz to spread out the Q's.  No preamps, no
rotors,
> no beams, and very little doppler to contend with.  Of course, those birds
> were piggy-backed on Russian (military?) satellites with oodles of power
to
> spare...  wish we could get a ride like that today!
>
> George, KA3HSW
>
>
> ----- Original Message ----- 
> From: "Robert Bruninga" <bruninga@usna.edu>
> To: <rwmcgwier@comcast.net>; <ka1rrw@yahoo.com>
> Cc: <amsat-bb@AMSAT.Org>; <w9ae@charter.net>
> Sent: Monday, July 31, 2006 8:57 AM
> Subject: Re: [amsat-bb] 2.4GHz QRM
>
> <snip>
>
> >
> > I really hate to say this, but another approach is to thrown inthe
> > towel and go back to HAM radio's legacy of using spectrum that
> > no one else wants.  It used to be higher and higher.  Now maybe
> > it is going back to HF...
> >
> > I think the ultimate in linear transponders (for a LEO) these days
> > would be a 10 meter downlink.  THink Mode A.  And give it enough
> > power to be heard on a mobile with a whip.  No one is trying to
> > take away 29 MHz...
> >
> > Just a thought.
> > That is why PCSAT2, and RAFT and MARScom, three or our recent
> > ham radio satellites are experiementing with 10 m as a very useable
> > satellite band....
> >
> > Bob, WB4APR
> ----
> Sent via amsat-bb@amsat.org. Opinions expressed are those of the author.
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----
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