[Elecraft] K3 hand mic

[robert.hair]

If the "DeOxit" (?) fixes the switch, it sounds like it could be that the 
switch isn't switching enough current to keep its contacts in good order. 
Some contact materials need to switch more current than others in order to 
stay healthy.  You may be able to change a pull up or pull down (I don't 
know the configuration) resistor to increase switching current - cheaper 
than a new mic!


----- Original Message ----- 
From: "Bill" <w2blc at nycap.rr.com>
To: <elecraft at mailman.qth.net>
Sent: Thursday, April 09, 2015 9:21 AM
Subject: [Elecraft] K3 hand mic


> When I bought my K3, I also bought the hand mic. I used it for a few weeks 
> until I tired of the comments about the mechanical noise it made when 
> keyed. I had to be very gentle and careful when using the PTT so as not to 
> have all the keying noise on my signal (cheap mechanical design to 
> activate an even cheaper switch). I elected to do surgery on the mic and 
> gutted the mechanical switch out completely. I then did a little Bondo 
> work on the shell and installed a square Heil PTT switch. It works and is 
> very quiet. The only problem is the switches only last a couple of years - 
> which I learned from using other Heil mics). If you are careful, you can 
> open the switch and put a little DeOxit in there and all is well again.
>
> All that said, my question: Any suggestions for a hand mic that will work 
> quietly and last forever?
>
> Bill W2BLC K-Line
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