Author Topic: No audio from microphone to radio  (Read 419 times)

HL1HG

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No audio from microphone to radio
« on: 2022-01-31, 12:35:41 »
I'm a new comer of 1258 MKIIs and IC-706.
The panel and the radio is connected and controlled via network successfully.
Everything is fine except that no audio is sent from the microphone to the radio.
Of course, a speaker is connected to the speaker jack on the IC-706 front panel.

Would you please help me to solve this problem?

dj0qn

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Re: No audio from microphone to radio
« Reply #1 on: 2022-01-31, 15:22:57 »
The microphone audio and PTT is done in hardware, i.e. the red straps inside of each RRC.

It appears that somewhere there was a mistake in the wiring. It must match that provided on
page 115 of the manual. The Icom is however the easiest one with the wires just going straight
across, so perhaps one or more of them are not installed correctly. Use an ohmmeter to see if all
are connected properly. When installing, never use your fingers, instead hold the strap with
needle-nose pliers just above the start of the insulation and gently push into the hole. If the wire
gets bent, throw it away and set a new one.

I hope that this helps.

73,
Mitch DJ0QN / K7DX

sm2o

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Re: No audio from microphone to radio
« Reply #2 on: 2022-01-31, 18:57:14 »
Yes check the red straps so they are not broken, also check the codec gain settings in each box

73 de mike

HL1HG

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Re: No audio from microphone to radio
« Reply #3 on: 2022-01-31, 23:40:28 »
Thanks for your advices.
I'll check again all red straps.

73 DE HL1HG, Kim

HL1HG

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Re: No audio from microphone to radio
« Reply #4 on: 2022-02-06, 07:08:36 »
After days of repeated tests, I've found that there was a soldering mistake on the RJ45 cable connecting the RRC to the Radio. Now everything works well.
Thanks for your advices.
73 de HL1HG
« Last Edit: 2022-02-06, 07:10:44 by HL1HG »