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Just be sure the wire can slip off the sheave and get jammed in the gap.
Another possibility: Solder little loops of wire onto the antenna a few 
feet on either side of the pulley and tie a piece of rope between them, 
leaving a little slack so the wire can hang below the pulley. The rope 
goes through the pulley, not the wire. 
73,
Scott K9MA
On 5/1/2019 07:17, N4ZR wrote:
 Thanks to everyone who responded to my query.  After digesting your 
comments, I went online and discovered some pulleys that may be 
appropriate to the job - <https://www.boatersland.com/scp28501.html>. 
The sheaves are "plastic", and the low price has me a bit skeptical, 
but I'll keep an eye on it.  You can pay literally hundreds of dollars 
for similarly-sized marine pulleys with carbon-fiber sheaves
 
--
Scott  K9MA
k9ma@sdellington.us
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