Thank you, Joe, Don and Chuck Jack; the mic is an MC-48 which is shown
as an electret on the schematic. I shall certainly swap the plug
connection from pin-5 to pin-6 and give it another go. I note that the
UP and DOWN buttons give some strange effects so those need my attention
too.

73 es tnx agn de David G4DMP

In a recent message, "Joe Subich, W4TV" <li...@subich.com> writes
>
>Elecraft and Kenwood reverse the pin used for +8V that powers
>the DTMF encoder.  You will need to move the wire on pin 5 of
>the Kenwood Foster plug to pin 6 to get the +8V from K3/K3s.

>The same is true if you want to use a Kenwood desk mic with
>built-in preamp or active equalizer (e.g., MC-60A, MC-80, MC-85,
>etc.) with the preamp or eq.

>73,

    ... Joe, W4TV


On 2/7/2018 9:09 PM, Don Wilhelm wrote:
> David,
>
> Are you certain the Kenwood mic is electret?  Most are dynamic.  Make
> certain the mic plug is wired for standard Kenwood pinout for HF mics,
> Some made for VHF rigs may be different.
>
> 73,
> Don W3FPR
>
> On 2/7/2018 9:47 AM, David Pratt wrote:
>> In an archived message Lyle KK7P said .....
>>
>>> Currently, use of a DTMF-equipped microphone or generating the tones
>>> with an attached device. The K3 does not generate DTMF
tones,although
>>> it could in a future firmware enhancement.
>>>
>>> 73,
>>>
>>> Lyle KK7P
>>
>> Well, in the absence of the long awaited DTMF software enhancement
for
>> the K3  I have at last bought myself a Kenwood microphone, fitted
with
>> an 8-pin plug that mates with the K3. But I have had no success in
>> getting the DTMF feature to work :-(
>>
>> As the Kenwood mic is electret I have switched bias on with MIC SEL
>> although, surprisingly, the microphone seems to work equally well
with
>> it switched off!
>>
>> Does anyone know how to get the Kenwood DTMF mic to work with the K3?
>>

-- 
 + - - - - - - - - - - - - - - - - +
 | David M Pratt, Kippax, Leeds.   |
 | Website: http://www.g4dmp.co.uk |
 + - - - - - - - - - - - - - - - - +

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