[Yaesu] MD-100 Background Noise

[Fern Rivard]

    I have been test driving a Yaesu FT-1000 MP V which has this same
microphone MD-100 and had been getting some intermittent reports of noisy
transmit audio like I may have been running the processor too high or
complaints of picking up background noise such as the blower in the
transceiver. Well, it did it again tonight and I knew that I had not cranked
up any of the controls so I noticed that this particula Yaesu desk
microphone uses the cursed RJ style of mic connector in the rear of the mic.
So I robbed the 8 pin to 8 pin mic cord from my own MD-1 mic and tried it.
The noise was all gone! I took my RJ crimping tool and recrimped the RJ mic
connector (that plugs into the back of the MD-100) and Voila! The noise is
all gone. Yaesu has been have a lot of problems for many years with those RJ
style of mic cords on their vhf and uhf radios as they get very noisy when
transmitting and by wiggling the cord and monitoring your transmit signal
you will be able to hear it all. I usually try and recrimp those mic cords
and it will normally repair the problem for some time. So my suggestion is
to NOT use the RJ style of mic cord on the MD-100 desk mic but rather either
make your own 8 pin to 8 pin mic cord or purchase it from Yaesu.
    Best of 73's from Fern VE7GZ

----- Original Message -----
From: KN4LF, Thomas Giella <kn4lf@earthlink.net>
To: Yaesu E-List <yaesu@mailman.qth.net>
Sent: Sunday, March 10, 2002 17:11
Subject: Re: [Yaesu] MD-100 Background Noise


> Unscrew the microphone element cover and place a cardboard tube inside of
it
> to cover the side holes/slots. This will stop the excessive noise pick up,
> as the MD-100 mic element is NOT unidirectional.
>
> 73,
> Thomas Giella, KN4LF
>
> Plant City, FL
> Grid Square- EL88wx
> CQ Zone 5
> ITU Zone 8
>

> Subject: [Yaesu] background noise
>
>
> > Hello to all
> >
> > I hope this message will be not a little bit off topic, but , probably
> >
> > could be " interesting ".
> >
> > I have a barand new FT1000 Mark V and a MD100 microphone. This
microphone,
> > unfortunately ,
> >
> > gets a lot of background noise, I mean when a switch my home brew linear
> > amplifier on
> >
> > the noise of its fan probably, a little bit noisy, "enters" in the
> > microphone causing some troubles
> >
> > you can easily immagine.
> >
> > So my question is is there any electronic circuit to " cut "  this noise
> ??
> >
> > Is there anybody have my same problem and have already found the
solution.
> >
> > Any suggestion will be appreciated.
> >
> > 73 and best DX
> >
> > Andy I7DFV