On 20 Jun, 04:28, Highland Ham
wrote:


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Transformer does not need to be 1:1 exactly
Suggest you include an approx 1000 Ohms trimpot to fine adjust the mic
port input from the transformer. *Assuming the radio audio input
impedance is in the order of 500 Ohms.

Frank * * GM0CSZ / KN6WH

Thanks. I'll give that a try.