Can ICOM IC-7000 microphone be used with Xiegu G90?

 Yes, it can be use!

As a matter of fact, any RJ-45 ICOM microphone can be used with Xiegu G90 transceiver.

Of course, the ICOM remote microphone is using a different serial protocol to communicate with the radio so the function buttons WILL NOT work.

Basic PTT and modulation WILL work. 

I also tried with the microphone from other radio, from ic-703 and IT DOES WORK.

This is the proof, in a small video I made this evening after a fellow ham said on FB his combination is not working.

Here are some comments about the Xiegu G90 RJ45 microphone pinout:

ATTENTION!!!!

The RJ45 is the female connector as seen when you look to the front panel!

MDATA - This is the serial Data from Microphone to Front Panel Unit. Pretty similar to CAT protocol but with some differences. It is not ICOM Compatible but the voltage level is the same.

GND - Ground. Not Shield.

MIC - Audio signal from microphone to radio (HOT signal).

MICE - Microphone ground, the shield of the microphone signal wire.

PTT - PTT Switch, goes to Ground to switch the radio into TX.

MSVSW - This is a pin used on ICOM radios to identify the microphone type. Not used in Xiegu G90.

NC - Not Connected

8V - 8V from the 9V LDO. Actually, around 8.7V on the G90.

Lustraphone mike, another piece of junk restored...

A few months ago I visit a friend of mine.
In his backyard I found a big stock of junk.
Searhing for some interesting, I found a nice desktop microphone who look a little odd!
I took it for nothing.
Unfortunately, I didn't took any picture before I start to open it. The images here are after some cleaning...
At home, after a little thinking, I opened it and found that the microphone is made by LUSTRAPHONE in England.
A nice transformer was fitted under the transducer. The output is balanced at around 600 Ohm.


I search on the Internet but I found almost nothing about this type. Only this site is exhibit a identical one, only for hire!
I removed the old paint which was horrible and sprayed with a matt-black one.
On the chromed pieces I work witha Dremel brush and restored the shining for a nice contrast.
The front of the transducer was covered with a dense copper mesh which was unrecoverable so I removed it.
The switch is the original one (Labeled also with LUSTRAPHONE). It is a double-section two position but one section was unusable (in shortcircuit) so I had to use only one...

The final result is this (click on photo for larger view):

I used it on a FT-2000 and the audio reports were great!
Nice piece...

Why Lustraphone Ribbon Mike was never at BBC.

Some info about LUSTRAPHONE:

Lustraphone was a contemporary of Grampian and Reslo from the 1950s -- all British microphone manufacturers building ribbon and moving-coil mics mainly for the amateur, semi-pro and PA industries. (http://www.soundonsound.com/sos/mar02/articles/qa0302.asp).

It seems that hey invented the noise cancelling microphone!