In article ,
On Sat, 09 Dec 2006 12:10:05 +0000, wrote:

Suprisingly, google isn't turning up much useful stuff on this one.

I know a number of people use these, based on silica gel or similar,
inside the aircraft.

Mine is hangared but I know it actually spends quite a bit of time
outside during the day, and I want to make the avionics last as long
as possible.

There are various small mains powered refrigeration-cycle-based units
but I can't easily ensure that a supply is connected. So something
with a replaceable "pack" would be great.

Any suggestions would be much appreciated?

I've had good experience with the Eva-Dry units, both the powered mini
Peltier unit (EVD1100) and the renewable crystal-based units (EDV300 and
EDV500). I leave two of the renewable units in the airplane; when the
crystals turn from blue to pink they need to be recharged--basically
dried out overnight. They just plug into the wall and heat up.

Amazon has all of these; search for Eva-Dry.

Bruce

--
Bruce Horn, Ingenuity Software, Inc.