Re: Intruder on 438.125 MHz
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Mark Edwards:? I told a couple of RMHam guys that happen to live up that way, but no other clubs,
since this is basically in your backyard.
Mark Ehr:? If you use SDRConnect to make an I/Q recording on the narrowest available bandwidth of 62.5 KHz and send it to Florida, your friend can use the same software, in either Linux Mac or Windows, to play the file and select different modes and filter widths.
Greg
On Fri, Feb 7, 2025 at 5:19?PM Mark Edwards | W0QL via <mark5293= [email protected]> wrote:
Greg,
Nice work tracking down the signal as much as you did.? Thank you. I see you are already in touch with our club president Mark Ehr, K0EHR. ? Have you also contacted other clubs, like the Parker Radio Association?
73,
Mark Edwards-W0QL
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One thing is certain: ?The future is uncertain.
On Feb 7, 2025, at 2:18?PM, Greg Ella | N0EMP via <gregella53=[email protected]> wrote:
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I think it is either FM or Phase Shift Keyed.
Greg
Hey Greg, I tuned my SDRPlay to the signal and have engaged a buddy of mine who is an expert in signal processing to see if he can help us decode the signal. He¡¯s in FL so I¡¯ll need to send him an audio file. Do you know if this signal is FM modulated
or using something else?
?
73,
?
mark?
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Mark Ehr | K0EHR
President, 285 Tech Connect Radio Club
Littleton, Colorado
k0ehr@...
Check out my ham radio blog:
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