A review of some of the K1 type speaker mics that I currently use. At the end of the video there are video samples of the transmit and receive audio for the speaker mics reviewed. All samples were performed at the same volume setting using the same radio for both the transmit and receive samples. The recording mic remained in the exact same position for all tests.

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Product links:

Commountain Speaker Mic - K Plug Compatible
https://www.amazon.com/dp/B07MX4J3W8?...

AnyTone Speaker Mic for AT-D878UV
https://www.amazon.com/AnyTone-Speake...

Kenwood KMC-45D Heavy Duty Speaker/Microphone
https://www.amazon.com/dp/B01CJKZQX4?...

Baofeng Speaker Mic - 2 Pack
https://www.amazon.com/Original-UV-5R...