[Elecraft] Mic for K3

[Joe Subich, W4TV]

The MH-80 is a "powered" microphone.  It uses either a battery or 
power from Pin 5 to bias the electret mic and operate an internal 
preamplifier.  Preamplifier output level by a pot at the output 
with no DC blocking capacitor.  

I would be very wary of using the MH-80 with the K3 unless the 
mic cable were rewired and a blocking capacitor was put in line 
with the wiper of the output level control. 

The web site: http://homepage.ntlworld.com/rg4wpw/date.html is 
an excellent source of information on radio microphone connections 
and information/schematics of most OEM microphones. 

73, 

   ... Joe, W4TV 
   



> -----Original Message-----
> From: elecraft-bounces at mailman.qth.net 
> [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Don Wilhelm
> Sent: Wednesday, February 13, 2008 12:25 AM
> To: THOMAS BRERETON
> Cc: Elecraft Reflector
> Subject: Re: [Elecraft] Mic for K3
> 
> 
> Tom,
> 
> The K3 is wired for the *now* Elecraft standard mic pinout.  
> It happens 
> to be *compatible* with the Kenwood pinout (except for pins 5 and 6).
> 
> You should look up the pinout (and pin usage) for any microphone that 
> you would intend to use with the K3 (or any other 
> transceiver), and know 
> the usage of all the pins.  If it maps to the the Elecraft 
> pinout, then 
> it can be used, otherwise the connector plug will have to be re-wired.
> 
> I can say that if any Kenwood mic does not connect anything to the  
> Kenwood defined +5 (or +8) volt pin (pin 5), and does not connect 
> anything to pin 6, then it will be compatible with the K3 pinout.
> 
> User, know your microphone.  There is information on the web 
> - Google is 
> your friend.  The Elecraft pinout information is in the K3 
> manual - we 
> cannot be expected to reliably know the details and eccentricities of 
> every microphone out there, but I can state for certain that the 
> Elecraft MH2, MD2, and Proset K2 will work just fine with the K3.
> 
> 73,
> Don W3FPR
> 
> THOMAS BRERETON wrote:
> > Hi All,
> > I have access to a Kenwood MC-80 (made for the Kenwood 850). 
> > Is this compatible with the K3?
> > Tom Brereton, W0TOM
> >
> >   
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