Thanks everyone yesterday for your wwvb comment. I now know why the wwvb
signal droped to -120db.
Seems that over 4 years water slowly built up in the preamp housing. Water
and rust do make fine conductors.
May have effected bias just a bit and everything else.
Washed it all out and will let it dry
Paul.
On 05/14/2012 07:20 PM, paul swed wrote:
Thanks everyone yesterday for your wwvb comment. I now know why the wwvb
signal droped to -120db.
Seems that over 4 years water slowly built up in the preamp housing. Water
and rust do make fine conductors.
I had the same problem with a GPS antenn
Magnus
Yes indeed will be working tonight. At least the preamp.Need to figure out
what was leaking yet. A bit messy but no real damage and it uses nothing
but simple parts.
It also allowed water into the coax so will need to chop 3ft off and put a
new connector on. Minor stuff.
Regards
Paul.
On Mo
Paul,
On 05/14/2012 09:46 PM, paul swed wrote:
Magnus
Yes indeed will be working tonight. At least the preamp.Need to figure out
what was leaking yet. A bit messy but no real damage and it uses nothing
but simple parts.
Good to hear.
It also allowed water into the coax so will need to chop 3
mag...@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
Hal,
On 05/14/2012 09:54 PM, Hal Murray wrote:
mag...@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?
Is this a Spectracom 8206? Should I worry about mine (that one that's
outdoors)?
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Magnus is right lots of ways for water to sneak in.
So I have not had time to figure it out yet. But it is a copper loop and I
suspect the place its joining the preamp box let water in over time. The
fact is even a small pin hole that allows air in and out thats humid can
allow water buildup. But t
On 05/14/2012 11:04 PM, paul swed wrote:
Magnus is right lots of ways for water to sneak in.
So I have not had time to figure it out yet. But it is a copper loop and I
suspect the place its joining the preamp box let water in over time. The
fact is even a small pin hole that allows air in and out
time-nuts-boun...@febo.com wrote on 05/14/2012 05:04:13 PM:
> From: paul swed
> To: Discussion of precise time and frequency measurement n...@febo.com>
> Date: 05/14/2012 05:04 PM
> Subject: Re: [time-nuts] wwvb weak on east coast especially
> when the pre-amps under wate
Am 14.05.2012 21:54, schrieb Hal Murray:
> mag...@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
On Mon, 14 May 2012 18:01:01 -0400
Joseph M Gwinn wrote:
> Modern outdoor enclosures use a filter of some kind, but the underlying
> principle is the same.
I don't know what other types are around, but we use vents with
a gore-tex foil over them. Keeps water out but lets the case breath.
This pr
All,
W.L.Gore and Associates makes a whole line of these things, but I'm not
sure where you go to buy just one.
http://www.gore.com/en_xx/products/venting/protective/index.html?xcmp=ijdgpvmktgurl
73,
geo - n4ua
On Tue, May 15, 2012 at 2:59 AM, Attila Kinali wrote:
> On Mon, 14 May 2012 18:
Pretty neat snap in vents and all.
Not sure how you buy a few either
On Tue, May 15, 2012 at 8:02 AM, George Dubovsky wrote:
> All,
>
> W.L.Gore and Associates makes a whole line of these things, but I'm not
> sure where you go to buy just one.
>
>
> http://www.gore.com/en_xx/products/venting/pr
At 10:49 AM + 5/15/12, time-nuts-requ...@febo.com wrote:
Date: Tue, 15 May 2012 08:59:04 +0200
From: Attila Kinali
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] wwvb weak on east coast especially when the
pre-amps under water.
Message-ID
On Tue, 15 May 2012 08:35:20 -0400
Joe Gwinn wrote:
> Gore-tex blocks liquid water (and dust), but allows water vapor to
> pass, so one can still get pumping and the accumulation of condensed
> water. Where are your enclosures used, and how exposed are they?
The most exponsed ones... in 3000m
.@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Joe Gwinn
Sent: Tuesday, May 15, 2012 8:35 AM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] wwvb weak on east coast especially when the
pre-amps under water.
At 10:49 AM + 5/15/12, time-nuts-requ..
ovsky
Sent: Tuesday, May 15, 2012 7:03 AM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] wwvb weak on east coast especially when the pre-amps
under water.
All,
W.L.Gore and Associates makes a whole line of these things, but I'm not
sure where you go to buy
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