[amsat-bb] Re: LEO-satellites-antennas... ?

Pavel Milanes Costa co7wt at frcuba.co.cu
Mon Jan 6 17:15:56 PST 2014

Yes, Omni antenna in 70cm is my head ache now, no rotor yet (arduino is 
on his way...)

I just build a QFH + 10dB preamp on the mast and a RTL...  testing it yet.

I can copy FO-29 (Beacon and transponder), SO-67 beacon, just heard 
xatcobeo with short carrier by times...

Al this above 30 degrees of elevation...  below 30 degrees nothing... hi 
hi hi..

SO-50 is a no go even in a 70 degrees pass...

I'm evaluating the parasit lidenblad or the turnstile moxons... any 
advice based on practice on this two and against QFH? better? worse? the 

73, CO7WT.

El 06/01/14 10:09, Robert Bruninga escribió:
>> I think the QFH throws most of the energy straight up (broad pattern,
> but not a lot at the low elevation angles).
> Or another way to look at it, is that satellites at low elevations angles
> are 10 dB farther away so they will always be weaker by a factor of 10 to
> 1 to high elevations.
> Bob, WB4APR
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