[time-nuts] wwvb weak on east coast especially when the pre-amps under water.

Magnus Danielson magnus at rubidium.dyndns.org
Mon May 14 20:06:51 UTC 2012


Hal,

On 05/14/2012 09:54 PM, Hal Murray wrote:
>
> magnus at rubidium.dyndns.org said:
>> I had the same problem with a GPS antenna at work. Somebody had put the
>> manufactures label over the porus plug that should have vented out any
>> water... but it didn't so I had too high water-level inside the antenna.
>
> How does water get in?
>
> I'm not doubting that it does, just trying to understand the mechanism.

There are many ways. No of the joints is perfectly water-blocking, and 
the plastic itself isn't perfectly water-rejecting. Water will get in 
there, so you better leak it out. It was the build-up that killed it, 
not the smaller amounts of water in itself.

Cheers,
Magnus



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