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Re: S band downlink on P3E



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
>>
>>
>>
>>
>>_______________________________________________
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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 program!
> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
> 
> 

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