A standard height encoder alone would need more power draw than a modern
transponder with integrated height encoder.

And fitting an ARINC case TPDR into an average glider panel would
compromise the layout of thestuff you actually need on the panel to go
soaring.

At 03:00 30 March 2009, Tony Condon wrote:
King made a version of their KT-76 Transponder with only 150 watts of
power
and called it the -78. Im curious if anyone has ever tried to use one
of
these in a glider. If so, what sort of power draw did you experience?

Thanks!
-Tony Condon
Cherokee II N373Y