Microphone pinout for the HMN4069

[Tishers]

Hi,
I am trying to adapt the HMN4069 microphone to a different Motorola radio (Micom2). I know the pinouts on the Micom2 but I have not had much luck on finding the pinouts for the microphone. Can someone please post the pinout? If I have to I can make a custom connector end to match up to the radio.

The microphone is not one that is conducive to being taken apart like the older models.

thanks lots!

Tish
AA4HA

[Will]

That mic may be the same 'pin out' as a Maxtrac/Radius/GM300 mic. The RJ45 connector is backwards numbered in Motorola Maxtrac and GM manuals.

BTW, I make an adapter that allows the use of GM300 mics on things like ICOM7200 HF radio.

[Tishers]

One of the problems that comes up with the Mobat radio is that pin #7 is the "monitor" pin and pin #2 is digital RXD (like for programming). If you use some other Motorola mics and do not pay attention to pin-outs you can end up hanging up the mic on-hook and it takes the RXD data line to ground.

on the MOBAT it is;

1 SW_A
2 RXD
3 TXD
4 GND
5 MIC_AUDIO
6 PTT_MIC
7 MON
8 AUDIO_OUT

I do not know the pin-out on the Next Generation Mic (HMN4069) but I assume it is the same as the HMN4072 (classic). I do not have pin-outs for either. If anyone can give me a rundown I would appreciate it

[Will]

From MCS control heads:
Pin 1 OPT SW N/C Not used
Pin 3 MON Hang up on mic
Pin 4 GND Ground in Mic
Pin 5 Mic Mic Hi
Pin 6 PTT Mic PTT
Pin 7 AUX N/C
Pin 8 Handset audio N/C

The programing Cable. Shows pin orentiation.http://batlabs.com/images/mcs2000.gif

So make a note of the wire colors on the mic cable and install a new RJ45 connector on the four wires from the HMN 4069 mic. You do not need the other mic leads connected.

Pin 4 will be the same
Pin 5 will be the same
Pin 6 will be the same
Pin 3 will be pin 7

[Tishers]

Will,
Thanks so much, that will really help in making a custom cable end so I can jack the microphone into the MOBAT-2