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Mk5 transceiver Intermod test.

This video demonstrates the testing of my new HF transceiver for intermodulation distortion in the transmitter chain. Here we are examining the intermodulation distortion in the tuned amplifier following the transmit band mixer. This stage filters out the unwanted mixer products. Too much level into the tuned stages can cause excessive intermodulation distortion. A 2 tone test signal, which is part of the microphone amplifier PCB, is used to check the distortion using a CRO FFT function. I also have an analogue spectrum analyser which shows essentially the same result.


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