I believe these are what you are thinking of:

http://www.neutrik.com/en/audio/powercon/

On Sun, Jul 3, 2016 at 6:39 PM, Edward R Cole <kl...@acsalaska.net> wrote:

> I only have power-pole's on my K3/10 and KXPA-100.
>
> I installed a power-pole on the CCI 140w linear I built, but would not do
> it a second time.  None of these power-pole will stay seated if equipment
> is physically moved.
>
> I very much like the power connectors used by DEMI on their transverters
> but do not have a source for them.  I chose 4-pin mic connectors to use as
> dc power and PTT jack on the 80w 2m Linear Amp I built last winter (for
> twelve customers).  Hardly any mics use that connector anymore so not
> likely one would connect a mic there <smile>.
>
> For commercial equipment I used multi-pin Mil-spec threaded round
> connectors.  They cost over $30 so hams would not pay that.  But for
> hard-duty usage they are super.  You can hold the weight of the Pelican
> Cased equipment via the cord!  Plus they are water-tight.
>
> 73, Ed - KL7UW
> http://www.kl7uw.com
>     "Kits made by KL7UW"
> Dubus Mag business:
>     dubus...@gmail.com
>
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