Yaesu: Yaesu FT-2600 microphone up/down buttons

Golay

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Apr 28, 2016
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Figured I'd run this by y'all before I send back a second mike.
Got this FT-2600 on a power supply in the shack. PTT started sticking. So I bought a replacement on Amazon. Although the one they sent me says Yaesu MT-48 DTMF MICROPHONE on it, I'm thinking it's a generic since it only cost me something like $16. Got the mike and the top 2 up/down buttons do not work. These two buttons are supposed to move me up or down a channel, or if I hold it in start scanning. So I sent it back. Amazon sent me a replacement and it's doing the same thing. Nothing.

The attached is from the manual. I see in the manual where I can program the 4 buttons (16-19) below the keypad. Don't see nothing about programming the buttons labeled 12 and 13 on top of the mike. All other buttons on the replacement mike are working fine. So like I said, before I send back a second one, just want to make sure I'm not missing nothing.

Thanks
 

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AK9R

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I ASS-U-ME that those mic buttons short to ground when pressed. However, they may do it through a resistor network. You could open up the microphone housing and examine the circuitry to see if anything is amiss.
 

Golay

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I ASS-U-ME that those mic buttons short to ground when pressed. However, they may do it through a resistor network. You could open up the microphone housing and examine the circuitry to see if anything is amiss.
Thanks for the reply. I'm thinking if I'm going to do "surgery" on a mike, I'll work on the sticky ptt on the original.
And send this one back untouched for a refund.
 

hill

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Older radios used MH-36 mics and not MH-48.

Your screen shot shows MH-36.

These two mics look the same and both should pass audio, but the buttons won't work with being wired different.
 

k6cpo

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Don't buy knock off, cheap chinese garbage.
The outer jacket on Yaesu (and Kenwood) microphones is prone to splitting and exposing the internal conductors. While this has no effect on the operation of the mic, it makes them more vulnerable to failure. The replacement cables I have purchased on Amazon are a plug and play solution AND they last better than the originals. Not all Chinese products are poor quality.
 

Golay

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Apr 28, 2016
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494
Older radios used MH-36 mics and not MH-48.

Your screen shot shows MH-36.

These two mics look the same and both should pass audio, but the buttons won't work with being wired different.
Thanks. Never noticed the difference. That's probably the issue. This latest one is going back if it's not too late.
 
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