[Elecraft] Fwd: XLR microphone wiring, K3 rear panel

Benson Wills benson at bwills.com
Fri Mar 1 20:04:20 EST 2013


I just found this conversation regarding the suitability of using CAT5/6
for K3 microphone cabling:

http://elecraft.365791.n2.nabble.com/K3-Microphone-Cable-td6333100.html

W4TV says:
"It will work fine.  Just be sure to use one pair for mic and mic return
(pin1 and pin 7) and one pair for PTT and ground (pin 2 and pin 8).
The other pins can be any wires but using twisted pairs for mic/mic
return and PTT/Ground will provide the best balancing to reduce any
hum/RFI issues with the unshielded cable."

Should I use one twisted pair for the hot and return?

And thank you for the tips on tx equalization.

---------- Forwarded message ----------
From: david Moes <dmoes at nexicom.net>
Date: Fri, Mar 1, 2013 at 7:04 PM
Subject: Re: [Elecraft] XLR microphone wiring, K3 rear panel
To: elecraft at mailman.qth.net


Wire it as Hot to tip and return and ground to the sleave.
 I use the same mic.    I find it a little boomy so I cut   50hz to minimum
  100hz to minimum 200 HZ to -6  400 to -3,  800 at 0    and the rest to +4
except the 3200 hz at -2  Bias off,  and High gain

dmoes at nexicom.net
VE3DVY


On 3/1/2013 5:16 PM, Benson Wills wrote:

> I'm hoping to get my mic wired for the contest tomorrow. I have an XLR mic
> (AKG D5) which has:
>
> Pin 1: ground
> Pin 2: hot
> Pin 3: return
>
> Just got back from RadioShack after waiting in line 15 minutes while the
> iPod and cell phone repairs were handled, just to get a 1/8 mono plug.
>
> I've got some CAT5E cable to use, and I also have a standard XLR cable.
>
> Does "hot" go to the center and ground & return go to the outside
> conductor?
>
> I know that I'll have to select the rear panel mic option in the menu. Are
> there other settings, i.e. bias voltage, that have to be set?
>
> 73
> Benson / NE4W
>
>


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