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Yaesu (UK) Ltd
MEK-2 Microphone Extension Kit
Description

The MEK-2 is a junction box for use with the Yaesu Transceivers, which allows connecting a variety of microphones with a round 8-pin plug to a transceiver with a modular plug.

Will work with the following:

  • FT-8900
  • FT-8800
  • FT-7900
Note: Not all microphones with 8-pin plugs can be used with this kit, including some Yaesu mobile microphones, as well as some other mobile microphones.

 
 Specifications

8 - Pin Microphone Jack Pinout. 
Looking at the MEK-2, there are 7 pins on the outside ring, and one pin (#8) in the centre, with the socket "key" at the 12 o'clock position. Pin 1 is located at the 11 o'clock position, and the pins are numbered in a counter-clockwise fashion, ending with pin #7 at the 1 o'clock position (pin 4 is at the 6 o'clock position).

Pin Number

Function

Description

1

UP

Connecting this pin to GND (pin 4) increases 
the memory or frequency by 1 step

2

9V

+9V power, supplied from the transceiver for the microphone

3

DWN

Connecting this pin to GND (pin 4) decreases 
the memory or frequency by 1 step

4

GND

Ground

5

ACC

Accessory

6

PTT

Connecting this pin to GND (pin 4) keys the transmitter

7

GND

Ground

8

MIC

Transmit autio input for the transceiver
     


 

Note: Some functions may not operate depending on what type of microphone is used.
The bias voltage required for condenser microphones is provided by the radio (9V) via pin #8 of the round 8-pin microphone jack.

 
Package Contents

  • MEK-2 Junction Box
  • Microphone Extension Cable (± 3m)
  • Installation hardware
  • Double-sided adhesive tape (65 x 28mm
  • Information Sheet
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