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Altimeter doing encoder duty

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Guido Lepore

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I see a few transponders that have a built-in altitude encoder (Trig for example), and now some of the digital altimeters, like the MGL ATL-2, can also output the altitude encoding without the need for a separate box.

Perhaps I'm out of step with instrumentation fascination, but to me the fewer gauges, holes and boxes in a Pitts panel the better, and I could care less if a electrical powered instrument or radio quit while I was flying.

Airspeed? I've flown home and landed with one stuck on "0", no biggie.
Altimeter? My transponder will give altitude and if that quits it doesn't matter, I'm VFR.
Oil pressure or oil temp? Whatever, if everything was normal before they quit, unlikely the trip home will have any event. Beats having a line that can leak or break routed into the cockpit.
Tach? Doesn't matter, cross ref with airspeed maybe.
Compass? Ha, ha, which reminds me, I'd better print out a compass correction card for my non-existent compass, 'cause it's on the getting-ramped checklist.

But I digress....anybody try a digital electronic altimeter, and dumped their encoder?
 

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