Super Star DM-507-4. 4 pin Mic to a Yeasu FT-301. Cannot seem to find this. Please Help.

SOURCE: mic wiring details reqyuired for ft290

290 plug


Looking at the end of the plug that goes into the 290 the pins are labeled, with the notch at the top, the connection to the right is pin 1 , counting clockwise connection 2 thru 6 (6 is to the left of the notch.) 7 centre


1mic earth and common return for up/down button via lock switch and ptt, 2mic, 3ptt, 4 +5V, 5 spkr, 6 up button, 7down button
Hope this helps
regards,
Colin

Posted on Jul 31, 2008

SOURCE: dm 452 microphone

this radio is made by PEIRCE SIMPSON and is wired like a cobra.
pin 1 shiels or ground
pin 2 is audio
pin 3 is transmit
pin 4 is recieve

shield is a bare wire wraped around the audio wire.i dont know the colors of the wires in the echo mic.the transmit wire will have contiuity with the shield wire when the mic is keyed that wiregoes to pin 3 . there should be 2 wires left. check these wires one at a time with the shield wire one will have contiunity . this wire will go to pin 4 recieve.the other wire will go with the shield wire on pin 1
this is the way you find how it wires. it will take an ohm meter to find whice wire goes where.

james morgan
morgans electronics

Posted on Mar 10, 2009

Rod Wallberg

• 494 Answers

SOURCE: would like info on wiring dm 452 echo mic on icom 400 pro

There is a users group on yahoo that you could join and ask your question. I am not too familiar with this radio and this is the best I could do...

Posted on Feb 14, 2010