[Elecraft] Hum using K3 with Behringer Xenyx 808 Mixer

[Jim Brown]

On 10/24/2014 8:49 AM, Phillip Zminda wrote:
> Is there another device I could use for sharing audio that might work better?

Yes. Look at the Rane product line. First rate American company based 
near Seattle, they don't steal their designs from other companies. The 
SM26 is 6x2. The SM82S is 8x3. Rane was the first company to eliminate 
Pin One Problems from their entire product line, beginning in 1995. Pin 
One Problems are the major cause of hum, buzz, and RFI.

http://www.rane.com/sm26s.html

http://www.rane.com/sm82s.html

Also, your hum problem may be related to how you are wiring your 
interconnecting cables, how you are getting power for your station, and 
whether you are bonding your station. Study 
http://k9yc.com/GroundingAndAudio.pdf for detailed advice on power and 
bonding.

For advice on wiring cables, study AN003 from

http://www.jensen-transformers.com/apps_wp.html

To feed a balanced input from an unbalanced output, do the bonding I've 
shown, and use the "Minimal" Adapter Cable shown as Fig 2.1 in AN003. To 
feed an unbalanced input from a tranformerless balanced output, use a 
3-circuit plug (TRS or XLR) on the balanced output, but connect the tip 
and the shell to the unbalanced input, with no connection to the ring.

73, Jim K9YC