[Moon-net] Antenna corrosion protection

[Hideho YAMAMURA]

Ken,

In my college days, I used to coat 24GHz horns and waveguides
with clear lacquer. My prof. said it is low loss and has no effect.

Polystyrene is one of the lowest loss material
in RF and microwave frequencies,
equal or better than teflon.

At least, when the coating is thin, the change should be small.

Hideho YAMAMURA, JF1DMQ.



Edi Gora wrote:
> My old father witch was pasionated by TVDX use to protect his yagis dipole
> boxes with a simple liquid compound, based on polystyrene (from inside your
> TVCR brand new box) and acetone. I'm not sure if blend it's completely
> microwave inert but appears to be, and it's very light.
> 
> Edi, YO3HCV
> 
> -----Original Message-----
> From: moon-net-bounces at list-serv.davidv.net
> [mailto:moon-net-bounces at list-serv.davidv.net] On Behalf Of Ken Willis
> Sent: Wednesday, January 23, 2008 5:00 PM
> To: Moon-Net
> Subject: [Moon-net] Antenna corrosion protection
> 
> Hi,
> I live on the coast and antenna corrosion from the salt-laden atmosphere is
> a huge problem.
> Being about to erect some new 23 cms yagis I would like to provide some
> protection of  both the booms and elements. In the past I seem to recall
> seeing advice on this reflector on the best form of coating to use .  Any
> comments gratefully received.
> Thanks, Ken G8VR 
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