Thanks for the info, swimmer. When I got back into R/C back a few years ago, tech had advanced and I ended up buying a spektrum 2.4 DX6. I looked it up and there is an altimeter that would plug into a telemetry module both available for spektrum. What little flying I do these days is out at the rural flying field where exceeding 400 ft occasionally would not be a big deal.
If it ever gets to the point where we`re being forced to toe the line wherever we fly than this would probably be the best option so the womans voice on my radio can warn me every time I`m approaching max altitude.