Dual Transponders?

I have dual transponders. Without a transponder you are restricted in the
altitudes you can fly and you have to make position reports. Both of these
restrictions can really be a major pain when flying high for any distance.

BTW, in case anyone is wondering, the transponders are wired such that only
one transponder is active at any one time. You set both transponders to
Mode C and your code into both. Another switch determines which transponder
is active. In my installation, the non-active transponder is is standby
mode.

jerry

"Scott Aron Bloom" wrote in message
...
Ok, Im not talking about the commercial carriers. But why would a general
aviation plane have dual transponders? Why waste the panel space? So
they
go
tits up that often in flight where its necessary?

Scott