[Elecraft] PowerPoles

[Howard Hoyt]

>>IMHO, there are only two kinds of Powerpoles,
>>those that have already fallen out and those
>>that are going to fall out soon.

I have had the PowerPoles on my K3 become partially unmated and causing intermittent operation while messing around with the cables behind the rig.  Retention force is only one problem with the Red/Black PowerPole pairs; their aspect ratio (~2:1) along with the flex in the housings gives a significant unmating force when rocked side to side.  I encourage all to use the ultrasonic-welded housing pairs.  This holds their alignment with out the roll-pin, and allows for the use of one of the locking devices sold to help the unmating issue:

http://www.powerwerx.com/powerpole-accessories/powerpole-retention-clips.html

Tying the clip back to one of the PowerPoles with  heavy-gauge thread or dental floss as one reviewer suggests is also a great idea to keep from losing the device.

Of course, using a retainer with a rig with flush-mounted PowerPoles is not possible, this is something manufacturers should consider when designing the panel/PCB layout.  If Elecraft had extended the PowerPoles on the K3 out from the case another 1/16" then a retainer could be used (hint hint)!

Cheers!

Howie - WA4PSC