[amsat-bb] Link Budget

[Joe]

what kind of ground station will be needed?
Sig
The Original Rolling Ball Clock
Idle Tyme
Idle-Tyme.com
http://www.idle-tyme.com
On 11/7/2015 2:45 PM, Jerry Buxton wrote:
> Actually, we are working on one that will be orbiting the Moon...
>
> Jerry
> N0JY
>
> On Nov 7, 2015 1:57 PM, Joe <nss at mwt.net> wrote:
>> Can anyone here run a link budget for me?
>>
>> I'm in an  slight heated debate with some people, About how they have
>> heard about the possible Geo synchronous bird coming up, and they are
>> all wondering why don't "THEY" I like the "THEY" part, anyway why don't
>> they just put it on the moon.
>>
>> I gave them several reasons why a Geo bird is better,
>>
>> 1- It is there 24/7 where the moon is visible less than 50% of the day
>>
>> 2- the Geo bird doesn't move ( or extremely little) so set the antenna
>> and forget it. Where the moon requires tracking programs and antennas
>> that can move in AZ and EL
>>
>> 3- Useable "Window" The amount of the earths surface that can see either
>> is soo close to the same why bother I bet a geo bird would be at least
>> close to 90% of what the moon see's
>>
>> 4- And finally antennas and power required. The moon being soooo much
>> farther away the amount of power needed each way has to be MUCH more.
>> And thats what I was wondering say you had a nice decent transponder in
>> Geo orbit. what power levels say ERP I guess is needed each way?  then
>> drop the same transponder and how much more erp each way will be needed
>> to have the same level of contact quality?
>>
>> Joe WB9SBD
>>
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> _______________________________________________
> Sent via AMSAT-BB at amsat.org. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership. Opinions expressed
> are solely those of the author, and do not reflect the official views of AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb