[Elecraft] Remote KAT500

[Clay Autery]

On 1/21/2016 4:44 PM, Fred Jensen wrote:
> 1.  From an Elecraft engineer [who I happen to know quite well]:  The
> AUX cable is probably not a good choice to extend.  In addition to
> voltage and RFI issues, there are timing constraints on those
> circuits.  I can do what I need with RS-232.
LOL!  Yep, that's what I was thinking...  Ethernet has voltage, RFI, and
timing constraints, too.  That just makes me want to test it to find out
if I can make it work now...  <diabolical grin and air-washing of hands>

> 4.  Condensate drain(s) are a must.  There is universal agreement that
> water (and apparently other things) runs downhill. :-)  I learned that
> changes in inside vs outside pressure over the day will also initiate
> condensation [did not understand how that works].
Pressure AND temp changes, combined with sufficiently humidified air can
act almost like a water pump...  I learned the hard way before I taught
myself how to put equipment on masts.  ;)  (Enclosures matter...  choose
the wrong one and it doesn't make much difference what doo-dads you
attach, the "plastic" itself will allow moisture ingress.
> 6.  Right now, I'm leaning toward a large enough PVC pipe, several
> inches long and open at the bottom [except for critter control] for
> cable entrance, condensate drain, and pressure equalization.  I'll
> probably put a light bulb in the case.  There is universal agreement
> that I need common-mode chokes at the ends and maybe along the cable
> runs inside the conduit.  Fortunately, I know K9YC, I'll consult with
> him on those.
Are you putting your cable runs in the ground?  That's a whole different
discussion.  ;)

73,

Clay