I ran an MC-60 for years and did have some problems with RF feedback until I
found the cause and the cure.  The problem with the MC-60 is that they don't
bring it totally to ground potential and it floats.  Thus, it is very
vulnerable to any stray RF.  I cured the problem by attaching a small wire
to one of the screws on the bottom of the mic base and running it through
the curly cord and under the radio to the ground lug on the back.  It was
clean as a whistle after that.

Take care and very 73.


Kevin :)
Amateur Radio:  K7RX
Navy Marine Corps MARS:  NNN0SHS




-----Original Message-----
From: Blind-Hams For blind ham radio operators
[mailto:[log in to unmask]] On Behalf Of John Miller
Sent: Friday, October 08, 2004 08:02
To: [log in to unmask]
Subject: Re: Why a desk mic?

The MC 601, can be used amplified or not and the MC-80 is only amplified,
the MC-80 is known for causing RF feedback as I had, MC-80 the amplification
is adjustable where it's not in the 60, I think the MC-60 is a dynamic
element mic where as the 80 is electric condenser, Those are the main
things, there are other little things, the MC-80 to me, sounds a lot better,
more natural when I hear some one on them, and physically they're completely
different.
----- Original Message -----
From: "Anthony Vece" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Friday, October 08, 2004 10:23 AM
Subject: Re: Why a desk mic?


> Can anyone tell me the difference between the KENWOOD MC60A and the
> KENWOOD MC80?
>
> Thanks
>
> 73 De Anthony W2AJV
> [log in to unmask]
> ECHOLINK NODE NUMBER: 74389
>
> ----- Original Message -----
> From: "Mike Duke, K5XU" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Thursday, October 07, 2004 10:21 PM
> Subject: Re: Why a desk mic?
>
>
>> As John said, With proper gain settings, and with proper voice
>> projection, you can work a desk mic from a foot away with very little
>> if any room echo.
>>
>> Most desk microphones have better fidelity, that is frequency
>> response, than do hand held microphones.
>>
>> If you have ever looked at the Heil Sound web page, Bob Heil is
>> absolutely correct when he says that the best installation is a
>> microphone which is shock mounted on a boom. That way, you get very
>> little table noise, plus you can swing the mic very close, even when
>> sitting back in the operating chair.
>>
>> Like most amateurs, I don't have that perfect set-up yet. However, I
>> too have a 444 which I bought new in 1980. It's the best overall
>> microphone I have ever used. For many years, Tentec, Swan, and
>> Motorola all sold the
>> 444
>> with their respective name plates attached as their base station
>> microphone.
>>
>> Here's one more thought. You didn't say whether or not your 444 has
>> the preamp built into it. If it does, run the preamp as low as
>> possible, and let the rig handle the gain.
>>
>> If it doesn't have the preamp, you already know that the preamp is
>> not needed for most rigs.
>>
>> Mike Duke, K5XU
>>
>