Feeling confident about the altimeter, I next started prepping "Olympic Gold", my 5.5 inch cardboard rocket. For this flight, power would be provided by an Aerotech 98mm K458, a very cool motor. I don't fly Olympic Gold very often; it's a very low tech, cardboard rocket that takes forever to prep. I finally get it ready to fly, and as I'm walking to the range head....what happened????....the altimeter is not beeping anymore. Great. Back to the car, unprep it to get the altimeter out, put in a new battery, prep it again, and back to the range head. Again, the altimeter stops beeping. Very bad. Not to worry, I'll just break out my brand new altimeter. Don't forget what I said earlier...it was untested. I insert the new altimeter into the electronics compartment and it merrily starts beeping out continuity. Very good. I get to the rod, shake the rocket around a little for a test, place it on the rod, and still the altimeter is putting out 4 beeps, indicating continuity to both main and drogue. Unfortunately, it was lying. The boost was spectacular...almost a 7 second burn easily pushes the rocket to 6,000 feet. The rocket arcs over at apogee, starts to descend and deploys it's drogue. I'm a little worried at this point since I usually hear 2 pops; the altimeter deploying the streamer and the backup pop from the timer. For this flight, the timer saved the rocket as the altimeter did not deploy at apogee and it did not deploy the main at 750 feet. Fortunately, the ground was so soft and the descent under the streamer was so slow that the rocket was recovered undamaged.