The mic works fine on the 71a without any batteries.

IF your having rf feedback probably going to the batteries isn't going 
to help.

You don't usually need the preamp but if you feel you do then try better 
grounding of the radio itself if you can.

Don

w a 2 i w c

On 12/23/2014 11:47 PM, Jim Gammon wrote:
> Have you had the RF feedback problem with the MC 60 on the 590? I
> have, but it works fine on the TMV71A and yes, I have batteries
> in the mic.  I don't know if the 71A could power the mic through
> the adapter cable that goes from that dumb RJ45 or whatever phone
> module jack they use but will have to try the mic on the 590
> again without batteries in the pre-amp to see how it works.  Like
> I commented in an earlier post, I use the mic plugged directly to
> the radio bi-passing the base, just plug the cord that normally
> screws into the base right into the mic and the other end into
> the 590, it works fine without the pre-amp.  73, Jim WA6EKS
>
>   ----- Original Message -----
> From: John Miller <[log in to unmask]
> To: [log in to unmask]
> Date sent: Tue, 23 Dec 2014 22:28:23 -0500
> Subject: Re: Kenwood Mc60A desktop mic
>
> All MC-60A's get power form Kenwood radios.  There were one or 2
> Kenwoods
> that didn't have the power pin on the mic jack but honestly, I've
> had almost
> all the Kenwood radios since they went to the 8 pin jack and I
> have yet to
> come across the one that doesn't have that capability.  The only
> one I'm not
> sure of was the TS-930 but even that I'm pretty sure mine had
> that.  The
> battery compartment is nice if you rewire it for a 4 pin Kenwood
> or another
> make of radio but other than that, you don't need to put
> batteries in it.
> I've run one on most of the Kenwood HF radios I've owned back
> when I used to
> try them all and I don't ever recall using batteries and the
> preamp always
> working.  I've had about all the Kenwood radios too, the list of
> ones I
> haven't had is a lot shorter than ones I have though I can't say
> for
> anything newer than the TS-2000 because I can't afford to do that
> anymore.
> ----- Original Message -----
> From: "Mike Keithley" <[log in to unmask]
> To: <[log in to unmask]
> Sent: Tuesday, December 23, 2014 10:02 PM
> Subject: Re: Kenwood Mc60A desktop mic
>
>
>   I'm kinda thought that this might be a newer model that uses
> power from
>   the radio.
>
>   ----- Original Message -----
>   From: Butch Bussen <[log in to unmask]
>   To: [log in to unmask]
>   Date: Tuesday, December 23, 2014 5:48 pm
>   Subject: Re: Kenwood Mc60A desktop mic
>
>
>
>   I'm surprised it needs batteries, power is available on the
> microphone
>   connector.  I can ask on other lists if you don't get a response
> here.
>   73
>   Butch
>   WA0VJR
>   Node 3148
>   Wallace, ks.
>
>
>   On
>   Tue, 23 Dec 2014, Mike Keithley wrote:
>
>   Hello list,
>
>   Does anyone here use the Kenwood MC60A desktop mic? I ordered
> one with
>   my TS590, and I can't figure out how to insert the batteries to
> power
>   the preamp.  I got the PDF manual, and it talks about removing
> four
>   screws to get at the battery compartment.  But the bottom of my
> unit has
>   six screws, four of which hold the rubber feet to the case.  I
> took all
>   the screws out except for the two screws holding what I think is
> the
>   impedance switch but can't get the bottom plate off.  The fit is
> so snug
>   I can't insert the blade of a screwdriver to pry it off.
>
>   Thanks for any help.
>
>   So does anyone here use this mic?