[TowerTalk] Double Coax Runs to Reduce Loss
W0MU Mike Fatchett
w0mu at w0mu.com
Thu Dec 22 21:25:44 EST 2016
Great idea..
One of those why didn't I think of that moments.
On 12/22/2016 10:50 AM, Jim Brown wrote:
> Also beware of vendors selling that shiny red/black zip cord -- the
> copper is often several gauges smaller than it's advertised, with
> thicker than usual insulation. And zip cord is a terrible choice for
> power and loudspeaker wiring, because it's a sitting duck for RFI.
>
> FAR better to use twisted pair, which is much harder to buy but easy
> to roll your own. Simply buy lengths (or spools) of black and white
> stranded THHN, stick one end of both conductors in a hand drill, the
> other end in a vise, and run the drill slowly for a while. Let the
> twisted conductors sit overnight in the drill and vise. They will try
> to untwist, but letting them sit minimizes that. The twist will not be
> perfectly uniform, but it will be plenty good enough.
>
> 73,Jim K9YC
>
> On Thu,12/22/2016 6:15 AM, john at kk9a.com wrote:
>> The vendor probably believed what
>> he was saying and should be properly informed.
>
>
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