[AMRadio] D-104 wiring

[Ken]

        Looks like he has one that is wired for a CB, were they short 
the mic connection , and close the receive connection when not keyed.  
When keyed it connects the Mic and mutes the receiver.  My D104 only has 
4 wires.


On 06/08/2012 02:46 PM, Geoff wrote:
> Uhm... check the bottom of the stand. If there's a pot, then its an amplified D-104.  That's the only reason I can see for a mic cable having 5 leads.
>
> W5AMI<ars.w5ami at gmail.com>  wrote:
>
>> On Fri, Jun 8, 2012 at 9:32 AM, John Coleman<jc at pctechref.com>  wrote:
>>
>>> Without tracing the wire inside the microphone, a quick way is to use and
>>> passive ohm meter that uses a 1.5 volt battery (do not use higher voltage
>>> ohm meters for this test) on the x1 or x10. When you connect it to the
>>> shield and the proper wire you should hear a click coming from the D104
>>> cartridge. Once when you connect and again when you disconnect.  If the
>>> microphone has push to talk you will probably need to lock the button down
>>> for this test.
>>> John, WA5BXO
>>>
>>>
>> I would venture to say the white wire is the audio line.  That would go to
>> the center of the jack.  Of course shield is ground to the case of the mic,
>> and I would tie black to it.  If I remember right, black is a direct ground
>> (-) side of the mic element, or just for the key circuit of the mic.
>> Either way, I think you could tie black to the shield.
>>
>> I would also suspect RED is the key line, but unless you have PTT wired up
>> in the rig, it's useless for now.  Have no idea what blue would be.  It's
>> been a while since I've used a D-104.
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