[Elecraft] CM500

[Don Wilhelm]

  Al the more reason to use only the tip and the sleeve.
The K3 jacks are 'stereo', which indicates that a stereo cable will work 
just fine and cause no additional problems. Since the K3 does not use 
the ring contact, it makes no difference whether the tip and ring are 
connected or not - the K3 ignores the ring contact.

I am not certain about your situation, but as I understand,in the case 
of the CM500, the tip is the active AF signal, and the shell is the 
return (ground).  The mono input of the K3 rear panel mic jack will work 
just fine as long as bias is turned on.  If the front panel mic input is 
the choice, an adapter to a Foster plug is required and bias will have 
to be turned on.

73,
Don W3FPR

On 1/13/2011 8:57 PM, Igor Kosvin wrote:
> I just checked my CM500. It appears that tip and ring are shorted together.
> 73,
> Igor, N1YX
>
> -----Original Message-----
> From:elecraft-bounces at mailman.qth.net
> [mailto:elecraft-bounces at mailman.qth.net] On Behalf Ofn6lrv at cox.net
> Sent: Thursday, January 13, 2011 3:20 PM
> To: Tommy Alderman;elecraft at mailman.qth.net
> Subject: Re: [Elecraft] CM500
>
> Tom,
> I recently bought a CM500 new and it did not include any papers at all
> however the headset's wiring reflects a standard used in computer sound
> cards. The mic jack/plug is usually wired as follows;
> tip- mic signal
> ring- bias voltage (optional)
> sleeve- ground
>
> Hope this helps.
> Gary
> N6LRV
> ---- Tommy Alderman<aldermant at windstream.net>  wrote:
>> SOMEWHERE in my pile of papers I have a CM500 headset owners paper!
>> Can someone please tell me what the tip and ring connection are for the
>> microphone? I assume the base is the ground connection.
>> Thanks.
>> Tom - W4BQF
>>
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