[Elecraft] K3s rear mic connector and shure SM58.

[Joe Subich, W4TV]

 > Pin #1 & #3 to ground

Pins 1 and 3 should *never be tied together*.  If your transceiver has
a balanced input *or* a *separate* case/chassis connection, connect
pin 1 (shield/mic case) to the case/chassis connection (ideally to the
*shell* of a Foster mic jack that is bolted securely to the metal case
of the transceiver).

If your transceiver does not have a separate case/chassis connection
(the K3/K3S rear mic jack *does not*) leave pin 1 disconnected
(floating).

73,

    ... Joe, W4TV


On 10/5/2017 9:30 PM, Bob McGraw K4TAX wrote:
> No preamp required.  Set the Mike gain via the menu to high. Easy to 
> wire the mike XLR to an unbalanced circuit.   Pin #1 & #3 to ground and 
> Pin #2 to MIC high.  See page 55  of the manual [MIC SEL] for details.
> 
> If you close talk the mike it will be bottom end heavy. Typically no 
> closer than 4" will be OK.  Move in closer and the bottom end comes up, 
> back away and the bottom end falls off. This is due to the proximity 
> effect of they type dynamic mike.
> 
> Otherwise, they sound quite good/.
> 
> 73
> 
> Bob, K4TAX
> 
> 
> On 10/3/2017 1:50 PM, Stewart wrote:
>> Is anyone using a Shure SM58 mic with their K3s? If so are you using a 
>> preamp? My O'scope shows that the mic and cable are good but level is 
>> pretty low.
>>
>> I don't get anything with the mic connected to the rear mic jack. 
>> Config is set to rp l , bias off. I tried mic gain from 0 - 100.
>>
>> K3s is new so I may be missing some menu item.
>>
>> Regards,
>>
>> Stew ke4yh
>>
>>
>>
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> 
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