Topband: RX Power over Coax

[Mark - N5OT]

In my head this is becoming "101 uses for old network cable" which is 
great because I've got a ton of it coiled up neatly and set aside but 
not thrown away :-)  Thanks topbanders.

Still working on this year's vertical.  It will be ready for CQWW is the 
plan.

73 - Mark N5OT


On 10/6/2020 6:20 PM, Richard (Rick) Karlquist wrote:
> Exactly right.  I had trouble with "critters"
> chewing my coax.  Nothing bad happened until
> it rained.  Then the rain got into the coax
> and the water interacted with the
> DC voltage on the coax; terrible noise.
> With the DC off, there was no noise even
> when soaked.
>
> I converted the DC feed to CAT-5 cable and the
> problem disappeared.  Another advantage of
> CAT-5 is that you get 8 conductors, all
> independent of the RF coax and the earth
> ground.  Also, for whatever reason, critters
> don't like it :-)  The RF coax was eventually
> stuffed thru 1,000 feet of cheap sprinkler
> pipe repurposed as "conduit".  Good enough
> to keep the critters out and rain out.  But
> I elected to keep the CAT-5 for DC.
>
> 73
> Rick
> N6RK
>
> On 10/6/2020 3:09 PM, donovanf at erols.com wrote:
>> Hi Lee,
>>
>>
>> Your testing will be inconclusive unless you inject water into your
>> connectors, or you could just move to Maryland where we get at least
>> 45 inches of annual rainfall and it gets into everything thats not well
>> waterproofed
>>
>>
>> 73
>> Frank
>> W3LPL
>>
>>
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