I'm just wondering where could i purchase a 75 mhz module for my KO UR?

Any recommendation.

Thanks

as far as i know, the ex-1 UR was only made available in 27mhz

time to switch to DSM!!

I don't think they make those anymore. I just bought one of ebay, it comes with a 2channel receiver (so you need a y-link for your transponder), I got mine as a backup for my 2.4ghz, just to be sure.