Radio Amateurs projects - WXSAT 137Mhz...meteo satellite
Monday, 2016-12-05, 2:28 PM
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NOAA15,17
Frequency 137,5Mhz FM wide
Quadrifilar helix antenna (BF981 preamplifier)
Decode with SatSignal


Helix


RX



Noaa foto received by yo4hfu

Romania Blue Sky

Superb

Europe

Carpathian Mountains




Rx

Front end: Preamplifier BF981, Mixer BF961
FI FM: 10,7Mhz module ...old radiotelephone
PLL: LB3500, HEF4059, CD4046. My vhf pll design.The step is is 12,5/25 Khz 

>>Download PLL VHF 12,5/25Khz yo4hfu<<


Antenna










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