"G.R. Patterson III" wrote in message
...


Newps wrote:

The problem is you spent $200 on an encoder 10 years ago and expect it
to work for a lifetime. You very rarely if ever see a bad mode C on an
airliner.

The implication is that airliners use better transponders and/or
associated
equipment. What are they using?

Better maintenance maybe?

Chip, ZTL