Total posts : 45366
“For some reason, some computer outputs have an impedance that is incompatible with transmitters. “
I agree, especially the mobo-native sound chips. I’m guessing low, because of other mis-match issues I’ve experienced, but I don’t know for sure. If the sound card is in the 300 Ohm area and the XMTR in looking for 600 there could be some clipping-like sounds, especially with the probably-lacking audio input buffer amplifiers on the audio input side of the XMTR. My Gizmo AM unit sounded *much* better with an LM 386 in front of it.