I use the MH-59A8J for the added buttons and controls. But I do have the following note in my log:
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On 10M FM above 35 or 40W (and possibly other bands and modes), the transmitter will not stop transmitting for several seconds or longer after the mic button is released. Resolved. This is caused by faulty MH-59 mic design. Problem could not be reproduced with original MH-31 mic. Modified mic by jumpering over ground pin inductor per instructions found googling. This resolved issue. Also made some transmit audio improvements to mic as found on Internet.
