Allan Broadribb
New Member
I am a glider pilot and wish to adapt a PC headset to my Vertex handheld radio. I do not have engine noise in a glider and need to be able to hear the sounds around me so I do not need a heavy noise cancelling headset. Also, I am retired, enjoy projects and I'm cheap!
My handheld radio has an adapter for an aviation headset with the standard 0.25" and 0.21" female adapters. I have removed these and replaced them with female mini plugs for the PC headset. The result is the input to the earpieces is fine - I can hear loud and clear. However the microphone output is very low - it can be heard but it is very quiet.
So far I have learned that aviation headsets usually use 150 ohm amplified electret microphones that mimic the old carbon mics which are still the standard. So . . . it appears I need to make an amplifier for the microphone in the PC headset.
Audioguru posted a diagram for a powered preamp in the following thread which I think would probably work. However I would like a circuit that does not need an external battery. My handheld radio provides 5-6 volts to the microphone when the push to talk (PTT) button is activated which I assume is to power an amplified mic.
https://www.electro-tech-online.com/threads/need-help-for-electret-mic-preamp.33726/
I appreciate any help you can offer.
Regards, Allan.
My handheld radio has an adapter for an aviation headset with the standard 0.25" and 0.21" female adapters. I have removed these and replaced them with female mini plugs for the PC headset. The result is the input to the earpieces is fine - I can hear loud and clear. However the microphone output is very low - it can be heard but it is very quiet.
So far I have learned that aviation headsets usually use 150 ohm amplified electret microphones that mimic the old carbon mics which are still the standard. So . . . it appears I need to make an amplifier for the microphone in the PC headset.
Audioguru posted a diagram for a powered preamp in the following thread which I think would probably work. However I would like a circuit that does not need an external battery. My handheld radio provides 5-6 volts to the microphone when the push to talk (PTT) button is activated which I assume is to power an amplified mic.
https://www.electro-tech-online.com/threads/need-help-for-electret-mic-preamp.33726/
I appreciate any help you can offer.
Regards, Allan.