I was using a 50m length of DL1000 telephone cable with a transformer with binocular BN73-202 at each end with a turn’s ratio of 2:3. There was a MINI VNA Pro used in transmission mode connected to the transformers.             Attenuation in the transformers:   Attenuation in transformers plus 50 … Continue reading Measuring attenuation of DL1000 military telephone cable.