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Re: S band downlink on P3E



I have read something recently [I'll have to dig it out if proof is
required] that even low horizon 2.4GHz is possible with basic equipment. So,
despite all the other interlopers, don't give up on it as a band yet.

73 de

Félim M3HIM
IO91ot
Aylesbury, Buckinghamshire, UK
----- Original Message ----- 
From: "Rick Fletcher" <rfletcher@plumdragon.com>
To: "'Félim Doyle M3HIM'" <Felim.M3HIM@ntlworld.com>; "'Joseph Trombino Jr'"
<w2kj@bellsouth.net>; "'AMSAT'" <amsat-bb@amsat.org>
Sent: Thursday, September 07, 2006 4:10 PM
Subject: RE: [amsat-bb] Re: S band downlink on P3E


While AO-40 was still alive and I was working it from deep within "Silicon
Valley", an area blanketed by WiFi, 2.4GHz cordless phones, etc., I
discovered that a parabolic dish with a properly positioned and designed
patch feed (slightly under-illuminating the dish and having no significant
side-lobes) would bring in AO-40's S-band downlink very nicely and cleanly.

Of course, other feed or antenna types such as helical antennas/feeds were
useless in that environment.

I have to admit that I don't buy the "too noisy" argument.

73,

Rick
KG6IAL


-----Original Message-----
From: amsat-bb-bounces@amsat.org [mailto:amsat-bb-bounces@amsat.org] On
Behalf Of Félim Doyle M3HIM
Sent: Thursday, September 07, 2006 12:21 AM
To: Joseph Trombino Jr; AMSAT
Subject: [amsat-bb] Re: S band downlink on P3E

I was sorry to hear that too (the same week I bought a Cal. Amp. 2.4GHz
downconverter). It might be a noisy band but how much can it cost to put the
kit on the bird anyway? Even if it is not in regular scheduled use, at least
it will be there when (or rather if) another downlink fails.

73 de

Félim M3HIM
IO91ot
Aylesbury, Buckinghamshire, UK
----- Original Message ----- 
From: "Joseph Trombino Jr" <w2kj@bellsouth.net>
To: "AMSAT" <amsat-bb@amsat.org>
Sent: Wednesday, September 06, 2006 10:49 PM
Subject: [amsat-bb] S band downlink on P3E


> Disappointed to find out that there will not be an S band downlink on
Eagle
>
> Will there be an S band downlink on the P3E bird???
>
> Sure hate having to fork over more money each time a new satellite goes up
> because previous up/downlinks are not being used anymore....makes me wish
> for more mode A LEO birds (grin)
>
>                                     73, Joe W2KJ
>
>
> _______________________________________________
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