[time-nuts] Up And Running

[Lester Veenstra]

" completely 100% waterproof seal"; famous last words, in the absence of a
dry nitrogen pressurization.


Lester B Veenstra  MØYCM K1YCM W8YCM
lester at veenstras.com

US Postal Address:
5 Shrine Club Drive
HC84 Box 89C
Keyser WV 26726
GPS: 39.33675 N  78.9823527 W

Telephones:
Home:        +1-304-289-6057
US cell       +1-304-790-9192 
Guam Cell: +1-671-929-8141
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-----Original Message-----
From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
Behalf Of Chris Albertson
Sent: 28 September 2012 16:55
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Up And Running

> Normally outdoor enclosures and antenna radomes contain some sort of small
weep hole to drain any moisture that may enter the enclosure or vent to
equalize pressure changes with temperature.


Not mine.  The outdoor timing GPS antennas I have use an O-ring to
form a completely 100% waterproof seal.  The radomes are pressure
tight and in my estimation would hold at least two atmosphere of
pressure in either direction.  I think this is pretty common for GPS
antenna.

Spend $30 and buy a "real" outdoor GPS antenna and it will have a
pointed top and will be 100% sealed.  Mount it on the end of a 1" iron
pipe the cable goes down the pipe.

Chris Albertson
Redondo Beach, California

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