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Re: S band downlink on P3E



Not likely; I have absolute faith that the design team doesn't work that 
way.

But, I am curious what is being proposed.  Is there a link to the current 
thinking on what this equipment will consist of?  I didn't see anything on 
EaglePedia, but there are a lot of nooks and cranies in there and I might 
have missed it...

Greg  KO6TH


----Original Message Follows----
From: "Eric H. Christensen" <kf4otn@ericsatcom.net>
To: amsat-bb@amsat.org
Subject: [amsat-bb] Re: S band downlink on P3E
Date: Fri, 08 Sep 2006 07:41:14 -0400

Who is designing the ground equipment?  It sounds like someone has a
get-rich-quick scheme up their sleeve...

73s,
Eric KF4OTN
kf4otn@amsat.org
http://www.ericsatcom.net


Quoting AL7CR <al7cr@punakea.com>:

 > I too totally agree.  I see no reason why we can not vote on the
 > designers decision with our support dollars.  Personally, I am giving
 > all mine to P3E.
 >
 > The fact that they are "designing the ground equipment too" is of no
 > comfort to me.  My S band gear is on the tower and operating.
 >
 > If AMSAT thinks this is such a great decision then let them find the
 > money to support it without the majority of us.
 >
 > Dean Shutt
 > AL7CR
 >
 >
 > sco@sco-inc.com wrote:
 >> I totally agree with you.
 >>
 >> Les W4SCO
 >>
 >> At 02:38 PM 9/7/2006, you wrote:
 >>
 >>> Rick,
 >>>
 >>> I am in _TOTAL_ agreement. I live in the suburbs of Tampa/St. Pete
 >>>  and never
 >>> had an interference problem on my 3 foot dish. I have used the same 
dish to
 >>> log well over a dozen WiFi access points in that immediate 
neighborhood.
 >>> With properly designed equipment, all that trash on 2.4 ghz goes away 
with
 >>> some elevation. What won't work is helixes with multiple sidelobes, and
 >>> surplus dishes that let one whole polarity of noise right thru the 
back.
 >>>
 >>> Everyone knows I'm a big supporter of AMSAT, but I gotta call it as I 
see
 >>> it. It makes me think of "bait and switch" to collect money for a 
project
 >>> featuring such a popular mode and then drop it.
 >>>
 >>> The loss of Mode B on AO-40 caused a lot of the hardcore AO-10/AO-13 
types
 >>> to walk away, and that was tough to overcome. Now that we have, and we 
have
 >>> people wanting S band, we leave them behind too. Even if it's a sound
 >>> engineering decision (and that hasn't been proven to me) it's a horrid
 >>> marketing decision. Bad mojo for a organization that lives on the 
donations
 >>> of it's members.
 >>>
 >>> Sorry if this causes any pain to those involved with Eagle, but I 
needed to
 >>> get it off my chest.
 >>>
 >>> 73, Drew KO4MA
 >>> AMSAT LM 2332
 >>>
 >>>
 >>>
 >>>> 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
 >>>
 >>>
 >>>
 >>>
 >>> _______________________________________________
 >>> Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the 
author.
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 >>
 >>
 >>
 >>
 >> _______________________________________________
 >> Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author.
 >> Not an AMSAT-NA member? Join now to support the amateur satellite 
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 >> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
 >>
 >>
 >
 > _______________________________________________
 > Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author.
 > Not an AMSAT-NA member? Join now to support the amateur satellite 
program!
 > Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
 >




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