avionics-any advice/bargains

[Graham Singleton <100421.2123@compuserve.com>]

>> These things are going to consume energy to drive them, and
that energy has to come either directly or indirectly from the engine. So!
 With respect Graham.  Doesnt that make the arguement for suckers?<<

Yes it does (;-) Theoretically a well designed sucker should use less
energy than the alternator. No reason why it shouldn't be fitted inside the
airplane either.
Mode C is a definite advantage, you get much more helpful responses from
air traffic people.
Graham