Originally posted by Cmotif
The Kyosho Perfex radio is what comes with Mini-z cars.
I think the 1st version came with everything up until recently,
and the MR-02 MiniZ came with the 2nd version.
Are the crystals interchangeable between Kyosho, Airtronics, Futaba etc?
Yep. AM 27MHz xtals have no inter-compatibility issues at all.
Keep everything AM & on the 27MHz band and there will be no dramas.
btw there are only 6 main freqs in the 27Mhz band (26.995-27.255).
Modern gear has "splits" which adds another 6 (7?) freqs, but
sometimes these can cause and/or receive interference from
others on a nearby freq.
Interference will be more pronounced when you use mixedbag
radiogear and some older radiogear aren't very narrowband.
If you experience glitching and interference, stick to the main 6 channels.