Try attenuate RF entry level on SDR Dongle
73, lu7abf, Pedro
On 12/28/20, Jean Marc Momple [email protected] wrote:
Andy,
To filter at RF level between 145.800 and 145.825 MHz will require a lot of cavities and even if possible most probably the attenuation would make the whole exercise useless.
May be at baseband level but I am not really competent to advise, your question is of interest and anyone who may help there is most welcome.
73
Jean Marc (3B8DU)
On Dec 28, 2020, at 9:34 PM, Andy Brian [email protected] wrote:
Hi,
I received many pictures from ISS. I'm using RTL dongle 2832 with SDR# program and MMSSTV with virtual cable and Orbitron.I found many rainbow lines on pictures and I analysed that this is the case of transmission with APRS local stations around 5km away and 1mhz below my receiving. Anyone have experirence of good filtering or set the SDR# program to reduce the infulence from of transmitter which is far away from 145.8MHz but still in the 2MHz bandwidth of RTL2832?
BR Andy
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