I've used the Spektrum indoors and gave feedback on how well it worked, but recently got to use it outdoors as well. Works as advertised!

Our track has a pit lane which keeps on-track mayhem from killing new cars coming onto the track. It's nice to turn my car on in pit lane, but leave the transmitter off until I'm ready to roll out. Necessary, no. Cool, yes!

The other nice feature ..... not waiting for frequency clips during practice.

I like it.

p.s.- John Adams for President.