[Elecraft] K3 - MH2 mic switch mechanical noise

[Richard Fjeld]

Bill,  you said in part:

> It is a mechanical problem within the mic, as other mics do not do this.

You are partially right.  The word is *SOME*  mics do not do this.  I have 
had both hand-mics and desk-mics do it.  AND, it was not only a spike; it 
was during transmit if I changed the pressure on the PTT.  The buttons 
should be soft material.   Yes, it is annoying.  It is one of the reasons I 
went to a boom-mic (CM500).  No way for a mechanical noise pickup from a 
detached PTT.

Now, it is so quiet I get complaints that my rag-chew group can't tell when 
I release the PTT.  (Longevity affects the hearing.)  I wrote in awhile back 
at their request to see if the K3 could do a short 'dit' when I released the 
PTT. (That opened up a can of worms)

I don't know what the innards of the MH2 looks like, but you may try to 
improve what the element is cushioned in to reduce the microphonics. If it 
is audible noise, the electret element will 'hear' it.

Rich, n0ce


----- Original Message ----- 
From: "Bill" <bill at w2blc.net>
To: <elecraft at mailman.qth.net>
Sent: Saturday, November 10, 2012 9:55 AM
Subject: [Elecraft] K3 - MH2 mic switch mechanical noise