I don't have the TS-590 and by the time I afford another radio there won't 
be any of them left alive. If you screw the cord from the radio in to the 
mic, bypassing the base, than there is no amplification no matter what you 
do since the amplification is in the base. The RJ-45 jacks also have the 
voltage right there though, if using the base or without, you really don't 
need the batteries with any radio other than maybe real early ones and I'm 
not even sure about that. With some HF radios there is RF feedback, I've had 
it before with some radios and some setups, other setups I don't. I've had a 
few MC-60a's as well and I find the last one I bought which I use daily has 
never had any feedback. I have used the amplification but generally don't 
because I find it's not needed and I don't need it to pick up my neighbor's 
sneeze or the kids playing or anything. I also never run processing though 
there are several reasons for that.
----- Original Message ----- 
From: "Jim Gammon" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Tuesday, December 23, 2014 11:47 PM
Subject: Re: Kenwood Mc60A desktop mic


> 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
>