JS wrote:

The tech who certified my transponder installation referred to the
A-30 as a "disposable" encoder. They're cheap, and easy enough to
change. You could spend more on repairing the old one.

It's worth calling them. My ACK had a problem about 3 years ago with the
output reading being off as much as 1000'. It was easy to notice, as my
Becker shows the encoder reading. ACK repaired and calibrated it for
$66, including shipping, and it didn't take very long.

--
Eric Greenwell - Washington State, USA
* Change "netto" to "net" to email me directly

* Updated! "Transponders in Sailplanes" http://tinyurl.com/y739x4
* New Jan '08 - sections on Mode S, TPAS, ADS-B, Flarm, more

* "A Guide to Self-launching Sailplane Operation" at www.motorglider.org