>One (as yet unmentioned) solution is to equip the device with an air inlet
>*and* a small bleed
>hole. You feed cleaned / dried air ( or nitrogen if you are picky) under
>modest pressure down
>the air line. Works fine right up to the point somebody cuts costs by not
>doing proper support
>for t
Hi
You are going to fabricate the “base” as a solid piece. Getting a coax style
connector
into that is just a matter of your credit limit. The larger issue on the device
is making the
“cover” out of metal. That probably isn’t going to work very well :) Now you
are off into
a glass cover of some
On 12/1/20 11:03 AM, Hal Murray wrote:
kb...@n1k.org said:
Yes, there’s more to it if you want to get connections in and out. Forget
about “hermetic� connectors, they aren’t up to the task. You need glass
to
metal seals embedded in the structure. Now you have even more constraints on
kb...@n1k.org said:
> Yes, thereâs more to it if you want to get connections in and out. Forget
> about âhermeticâ connectors, they arenât up to the task. You need
> glass to
> metal seals embedded in the structure. Now you have even more constraints on
> the package.
What's available
Hi
The gotcha with the device in question is that roughly 90% of the volume is in
the microwave
path to the antenna. Most of the remaining 10% if filled with electronics ….
One (as yet unmentioned) solution is to equip the device with an air inlet
*and* a small bleed
hole. You fee
Yes, without true hermetic enclosure, eventually enough moisture and
other stuff will leak around or diffuse through the seals and materials.
Depending on climate conditions and maintenance schedules, you could try
try an old-school remedy, which is to stuff as much desiccant (like
silica gel)
riginal Message-
>> From: Poul-Henning Kamp
>> Sent: Sunday, November 29, 2020 11:19 PM
>> To: Discussion of precise time and frequency measurement
>> ; Art Sepin
>> Subject: Re: [time-nuts] EOL Motorola Oncore Remote Antenna
>>
>>> It'
n
> Sent: Monday, November 30, 2020 4:23 PM
> To: Poul-Henning Kamp; Discussion of precise time and frequency measurement
> Subject: Re: [time-nuts] EOL Motorola Oncore Remote Antenna
>
>
>> To me it looks more like water ingress through micro-cracks in the
>> plastic-dome, a
ge-
From: Poul-Henning Kamp
Sent: Sunday, November 29, 2020 11:19 PM
To: Discussion of precise time and frequency measurement ;
Art Sepin
Subject: Re: [time-nuts] EOL Motorola Oncore Remote Antenna
It's obvious from the photo that the O-Ring seal failed its purpose
over its many yea
of precise time and frequency measurement
Subject: Re: [time-nuts] EOL Motorola Oncore Remote Antenna
> To me it looks more like water ingress through micro-cracks in the
> plastic-dome, and the O-ring did its job and kept that water in.
Interesting. That's the first we've h
Lester Veenstra writes:
> This brings up a point I have made frequently, in my professional life.
> Do not try to seal in electronics (for me , satellite units mounted near or
> on the feed system) instead warm the area with electronics and place a weep
> hole at the low point.
How to
ported more often in geographic areas that
experienced a wide variation in barometric pressures.
Art
-Original Message-
From: Poul-Henning Kamp
Sent: Sunday, November 29, 2020 11:19 PM
To: Discussion of precise time and frequency measurement
; Art Sepin
Subject: Re: [time-nuts] EOL
> It's obvious from the photo that the O-Ring seal failed its purpose over its
> many years of
> service. Has the unit totally failed or does the electronic portion still
> function?
No, the electronics is stone dead.
To me it looks more like water ingress through micro-cracks in the
no charge if you will pay the freight/customs
charges from San Diego, CA.
Art
-Original Message-
From: time-nuts On Behalf Of Poul-Henning
Kamp
Sent: Saturday, November 28, 2020 11:48 AM
To: time-nuts@lists.febo.com
Subject: [time-nuts] EOL Motorola Oncore Remote Antenna
The first M
The first Motorola Oncore Remote antenna I bought has failed after some
20 years of continuous service in Danish climate:
http://phk.freebsd.dk/hacks/20201128_EOL_Motorola_Oncore_Remote
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 9
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