Hi Tom,

I want to explore Howard Kaufman's questions further.

1. What is the radio and mic?

2. What type of connector is on the mic?

3. What part of the mic are you touching when you get the shock??

4. You say you don't get a shock from the radio, is it possible you are 
touching a painted surface or some metal that is totally insulated from the 
radio itself?

5.  If you have an ohmmeter, check the continuity between the place on the 
mic where you get a shock and the ground lug on the radio.  Do this with the 
radio off and the mic connected.  In general, I would expect the case of the 
mic to be connected to the chassis of the radio.

Please report back with your findings.  Together, we will figure this out.

73

Howard #3, W A 9 Y B W

----- Original Message ----- 
From: "Howard Kaufman" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Wednesday, April 17, 2013 6:13 AM
Subject: Re: mfj 931


> Do you get a shock or a burn?  burns are RF, and feel much different than 
> 60
> cycle or DC shocks.
> Does the hum go away when you switch to a dummy load?
> What about the shocks?
> Is their chirp on your CW signal?