[time-nuts] EOL Motorola Oncore Remote Antenna

[Bob kb8tq]

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 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 the air supply …… 

Why cleaned / dried? Well, if you have ever run one of these setups,  the dryer cartridges put 
a bit of white powder into the air output. Eventually you wind up with a pile of white stuff “down 
wind”.  I have empirical evidence to support this …. :)

Bob

> On Dec 1, 2020, at 1:03 PM, ed breya <eb at telight.com> wrote:
> 
> 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) as possible into any available volume inside. Eventually it will load up, of course, and need replacement or reactivation.
> 
> Ed
> 
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