Hi

They probably have a group of people on staff to go out and dry them off after 
it rains …. :)

Indeed, there are a lot of pictures of heated enclosures for antennas. The 
debate over the
dielectric properties of the coverings goes back a long way. There are notes in 
the standard
databases for the antennas that came with optional covers. They have a separate 
data file
for the “with cover” and “without cover” versions. The discussion here is 
pretty much an 
replay of how the conversation has gone over the years. There is indeed a group 
of people
who (quite rightly) suggest that it’s not a big deal in most cases. 

Bob

> On Feb 7, 2018, at 10:07 AM, Poul-Henning Kamp <p...@phk.freebsd.dk> wrote:
> 
> --------
> In message <875e4bc6-32c3-4724-afcd-086553ae5...@n1k.org>, Bob kb8tq writes:
> 
>> Water wise, one might note the large piles of snow sitting on my antennas at 
>> the moment. Yes, I 
>> could go knock it off, but somehow it just keeps coming back. Weird how 
>> winter works …. There
>> is no perfect solution. 
> 
> Somebody at BIPM told me that their antennas were heated and thermostatically
> kept at constant temperature.
> 
> -- 
> Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
> p...@freebsd.org         | TCP/IP since RFC 956
> FreeBSD committer       | BSD since 4.3-tahoe    
> Never attribute to malice what can adequately be explained by incompetence.

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