On Thursday, July 18, 2019 at 10:38:56 AM UTC-6, wrote:
Is there a match between mic type and how it’s wires? Dynamic vs Electret?

From W&W website:

"This microphone WILL WORK with:

• Becker
• Walter Dittel

This microphone WILL NOT WORK with (use TM168):

• Flightline
• Microair
• Trig
• XCOM

- See more at: https://wingsandwheels.com/avionics-instruments/radios-transceiver/microphones/peiker-microphone/tm170.html#sthash.Vw92UtR5.dpuf"