Teflon insulated wire, especially the silver-coated stranded copper I've
found on the internet to wind chokes, is VERY nice stuff. And it's
expensive.
Sometimes it can be quite worthwhile to make antennas less visible, and
reduced weight can be an advantage in some situations, but those are the
only good reason I can think for doing that way. There are times I've
suggested enameled wire for low visibility. As noted, insulation will
lower the resonance slightly, and although larger conductor diameters
can increase SWR bandwidth, that's hardly a critical factor, it's likely
to be too little to notice for the relatively small change from #14 to #20.
73, Jim K9YC
On 1/2/2020 5:54 PM, Tony Brock-Fisher via TowerTalk wrote:
My question - if I replaced the solid #14 wire with black Teflon coated #20
stranded tinned copper wire am I giving up anything in performance? I would
think the Teflon wire would hold up okay?
Note that using insulated wire instead of bare wire will add some
capacitive loading, and the elements will resonate at a lower frequency
for the same length.
I built a triband quad using teflon insulated #18 silver plated stranded
copper wire. It did come out lower in frequency. Other than that it has
held up fairly well.
-Tony, K1KP
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|