It may very well come down to a mechanical solution.
One idea that came to mind, because the final antenna will be a circular
open WG,just would be to cut the teflon to fit over the WG opening with
a slight overhang, then, find a plastic lid off a jar of anything that
will just slip over the OD of the WG. There could even be a 1/4" between
the two, it won't matter because it will be filled with RTV.
Then I would carefully cut out a circle (the majority of the plastic lid
ID) leaving only around 5mm or so of a "lip" that protruded inwards.
That lip would push down on the teflon and the lid could be sealed with
RTV to the outside of the WG. Kind of hard to explain in words but it
would sorta resemble a solar safety screen that is slipped over (capped
over) the front of small telescopes for solar eclipse viewing etc.
https://www.highpointscientific.com/spectrum-film-solar-filter-for-92-mm-98-mm-od-telescopes-st400bp1?utm_source=google&utm_medium=cse&utm_term=SPR-ST400BP1&gclid=Cj0KCQjwgJv4BRCrARIsAB17JI7xaR2GbScExEdlFl4WcyfcZuHXm-mQNkq9HUD2aEI5jwx66Ei-aFUaAijHEALw_wcB
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 7/9/2020 4:06 PM, Richard (Rick) Karlquist wrote:
Build a frame for it and hold it to the frame with
a clamping scheme, using a gasket to make it
water proof. You can then glue the frame to
the horn.
73
Rick N6RK
On 7/9/2020 11:13 AM, Gedas wrote:
Pardon the OT post but we have so many knowledgeable folks here I was
hoping I could get a quick answer.
This is antenna & RF related so maybe not super far off OT hi-hi.
I have a 1/16" thick 3"x3" sheet of Teflon that I need to "glue" to
the front of a uW horn antenna to keep water, dirt, bugs, etc out of
it. Can anyone tell me what type of adhesive is known to adhere to
Teflon and is not too difficult to acquire? TU
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.
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