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Stirling Radio Club has commissioned an APRS I-Gate Server on 144.800 MHz which receives GPS Positional Data sent over a 1200 baud packet signal and is then passed onto the APRS-IS Network.

Specifications
Raspberry Pi 3 running Direwolf
Receiver. RTL SDR Dongle with TCXO receiving on 144.800 MHz
Antenna. 3dbD Co-linear at 15 meters AGL
Isolation from GB3FE is achieved by the use of tuned cavity filters to notch out the TX signal

APRS Filter Notch
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