[Elecraft] [K3] Heil 600 ohm balanced mic (PR40) connecting to rear

[Clay Autery]

And if for some reason you have a TRS available and not TS 
connector....  just wire the ring and shield to Pins 1 and 3, and still 
pin 2 to tip.

______________________
Clay Autery, KY5G
(318) 518-1389

On 06/07/18 13:59, Bob McGraw K4TAX wrote:
> If you wish to make your own cable using a XLR connector and a 1/8" 
> Tip-Sleeve connector,   XLR pin #2 connect to Tip, XLR pin #3 and pin 
> #1 to the Sleeve.   In the XLR world, pin #1 is ground/shield, pin #2 
> is hot (+ve) and pin #3 is cold (-ve) Thus for unbalanced use, pin #1 
> and pin #3 must be connected.
>
> Also, the mike bias must be OFF via the configuration selection in the 
> radio.
>
> 73
>
> Bob, K4TAX
>
>
> On 6/7/2018 11:06 AM, Michael Blake wrote:
>> Mike,  I connect my EV-RE50ND to the rear 1/8” connector on my K3s 
>> without issue.  You need an XLR to TS 1/8” male cable or adapter.  
>> The mic does not care if it is balanced or unbalanced but if you use 
>> an XLR to TRS adapter the ring will be floating free and will cause a 
>> problem.
>>
>> You can buy the correct 3 pin XLR to 1/8” TS Male cable at your local 
>> Guitar Center or similar place for less that $20….
>>
>> Select the rear mic. Gain high and bias off.  The very same mic and 
>> cable also work perfectly with my KX3.
>> Michael Blake
>> k9jri at mac.com <mailto:k9jri at icloud.com>
>>
>>
>>
>>
>>
>>
>>> On Jun 7, 2018, at 11:56 AM, mike <ai6ii at comcast.net> wrote:
>>>
>>> I would like to connect my 600 ohm balanced mic PR 77D to the K3s 
>>> rear mic
>>> connection. The mic connector is XLR 3-pin. I cannot figure out if 
>>> the K3
>>> rear connection can accept a balance mic. The adapters I have tried 
>>> produce
>>> hum and lead me to believe they force it to unbalance.
>>>
>>> Any help appreciated. 73  ..mike  AI6II