ORIGINAL: BGR
The transmitter can change to any channel but so far I have only seen one receiver that can do that.
The Polk system scares me... It can only scan what is currently turned on. Does the pilot have full control over it and can he lock it in? If not, what is to prevent me (with a normal radio) from believing that my channel is clear, only to find that the Polk has decided to use my channel?
Regardless, I'm sure there's a safe workaround.
As for the synth modules, the RX can be changed with a simple crystal swap. I keep reading about low and high band RX, but the only one that can be specified by low/high is Futaba/Great Planes. Airtronics and Hitec appear to make only one. I've never seen an indication or warning on any of my Hitec receivers to remain within 11-35 or 36-60.