I have an ortovox m2 avalance beacon- I...
I have an ortovox m2 avalance beacon- I think it is single antenna. I am looking for a transmit only device to practice searches
with. anyone heard of a supplier of these?
There used to be something called a "ski mouse" which was a transmitter that could be attached to skis so you could find them, but I haven't seen it for a while. I think your best bet would be an old beacon. The really old 2275 mhz are getting tough to find, but any 2nd/3rd/4th hand beacon should be good enough for burial practice. For searching practice, I wrap mine in blister wrapping (shipping supply store) and then put it in an old plastic VCR box. It provides a good "target" and also protects the beacon.
I don't think the ski mouse transmitted on the same frequency as the regular units. Reason being that you wouldn't want folks spending a lot of precious time in a rescue digging out a ski. I'm not sure Ortovox makes the mouse anymore, but it was a pretty great idea.