[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
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
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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