CM-500 Headset blocking capacitor value

Thanks Don, I appreciate it. I may parallel 2 or 3 .1 uf and see what it sounds like. If it constricts my audio too much for the EQ to compensate, then I will order some bigger caps. I usually need to cut the lows on my transmitted audio anyway, so this might be fine.

73,

Len

Hi Don, Yep, I just got done with that. I only had room in the plug housing for one .1 uf cap, so I started there. I was able to get it to sound just like the FHM-3 mic with only minor tweaking of the EQ. I use Ken, NM9P's method using Full Duplex and RXA for adjusting the mic audio. Got a good visual indication that I have it about right. I also record as I go so that I can hear the "off-the-air" signal to verify that it sounds good.

So far the CM500 headset seems good. With my Creative T-10 speakers, I had to pump up the 1k and 2k sliders on the RX EQ, but the CM500 doesn't seem to need that. It is as if the headset was designed for radio communications use.

One interesting thing... The packaging lists it as having a dynamic mic, but they include a 3 v bias battery box. I confirmed that it does not work without bias, showing that indeed, it is an electret mic.

Now to try it out on the air...

73,

Len