[TowerTalk] WD-1A as control cable

[Gedas]

We used to work with the stuff back when we certification tested 
Sincgars R/T's etc. There are at least 4 variants of "WD-1" wire that I 
was aware of. There may be many more.

WD-1/TT, WD-1A/TT, WD-36/TT, WD-14/TT. As I recall the WD-1/TT was just 
a "twisted pair" molded insulation with each wire made up of 3 steel & 4 
copper wires, the WD-1A/TT was a "glued-pair"with each wire made up of 3 
steel & 4 copper wires, and the WD-36/TT was also a "glued pair" of 
wires with each wire being just a pair of steel wires. WD-14/TT was the 
same as WD-1/TT but had a woven cloth covering. It was never designed to 
be deployed and left out there for very long. The DC resistance spec for 
WD-1/TT was that it had to be less than 46 ohms/1000'.

Gedas, W8BYA EN70JT

Gallery at http://w8bya.com
Light travels faster than sound....
This is why some people appear bright until you hear them speak.

On 4/13/2020 6:51 PM, tony.kaz--- via TowerTalk wrote:
> Has anyone ever measured the resistance of WD-1A cable? If so it will save
> the trouble of pulling some off a spool to test.
>
> Also the plan would be to use to control 12V to relays at the feedpoints of
> my 80M 4-Sq. The cable would be buried except for the vertical portion as
> the feedpoints are elevated. Based on previous experience with WD-1A outside
> I saw rusting of the wires. Is this wire typically only used for temporary
> use or have folks had success with using something like liquid tape to seal
> the ends where terminals were soldered?
>
> My backup plan is to buy a 500' spool of Southwire Landscape wire 16/2
> stranded copper.
>
> 73 and stay safe
>
> N2TK, Tony
>
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