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6700 Microphone

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kk4cdk
kk4cdk Member ✭✭
in FLEX-6000 Signature Series

Mike Hernandez

Jul 1, 2026, 9:53PM CDT

I just bought a 6700 and I am  trying to have it work on phone. I have a RADIOSPORT RS55SL headphone that i bought from FLEX for my 8400 with the ACC-TRRS-MAE cable and it is working on the 8400. In order to have it working on the 6700 I bought a M-Y cable for Flex from DxEngineering to connect to the front 8 pin connector but it does not work….there's no audio with the following settings:

BIAS off

+20dB on

MIC

+ACC Off

DAX Off

MIC gain 50%

PROC Nor

MON 50%

AM CARRIER 0

VOX 50%

DELAY 35%

DEXP 35%

TX Filter 100 2900

TX EQU Off

What could be the problem?

Comments

  • Ken Wells
    Ken Wells Community Manager admin
    Options

    Try turning the BIAS ON. The RS55SL uses an electret Mic Element that requires the 3.3v - 5v BIAS.

    If that does not work, check to see if you bought the proper mic adapter from DXE.

  • kk4cdk
    kk4cdk Member ✭✭
    Options

    Thank you Ken, I did try it with BIAS on and it did not work out. In reference to the M-Y adapter it is identify as a Flex adapter but I have not check the pinout of it.

    I will love to have a 8 pin original Flex microphone that I could try just to know that the radio really works or not on phone, I could borrow or purchase it.

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