Xmas is my anticipated build completion Mono, not introduction of compulsory txp's.
There is a small Mode C txp produced by Microair (same size/weight as their radio - costs £300 more!). Not sure how long it'll run from a battery tho, txp's have a pretty hefty tx power and must use a fair bit of juice. Have you thought about installing one of those mini turbo-alternators now available?
Thanks for the info abt txp's for IFR IO, should ensure there will be a suitable supply of mode C's coming up. Still looking for info ffrom anyone about how easy (or otherwise) they are to install. Another potential problem is that many IFR-type machines operate on 24V, I've only got a 12V system.
Dunno where you got the idea I've got a top-end gps BTW, mines a lowly Pilot III, and is of course never used as the sole source of my navigation.
