Jeff,
I use stainless steel acorn nuts on the ends of matching screws. Not a
complete ball, but the facing surfaces are rounded.
George,
AA7JV
On Sun, 6 Oct 2019 13:27:58 -0500
Jeff Blaine <[email protected]> wrote:
I need to add a spark gap of some sort onto my full-size 160m insulated-base
tower. Looking for ideas.
Making the spark gap is simple. What has me asking for ideas is the weather
element - we have a lot of snow, ice, rain here and a spark gap needs to keep
that stuff off. But put a little cover over it, right? Well, yes but if the
cover is not fully enclosed, then you have wasps and spiders making nests
there. If it's enclosed, then you have condensation and ants.
I like the idea of W8JI's two balls close to each other - the surface area is
large so accumulated pitting won't change the spacing and thus the BDV much.
And the water will drain off away from the contact points. But what does a guy
make that out of if he does not have a set of brass balls in his junkbox.
73/jeff/ac0c
alpha-charlie-zero-charlie
www.ac0c.com <http://www.ac0c.com>
_________________
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
_________________
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
