prcguy
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The APRS radio is a ham radio with no other filtering than the notch?Running a UHF Motorola MSF5000 ham repeater with the stock internal duplexer on the same tower with a 50 kW FM and 9 kW UHF TV transmitter (590 MHz) with no issues. The 2 meter APRS digi at this site did benefit from a coaxial stub notch filter to knock down the FM station a bit.