Thanks for making me smile time and again)) I've never heard of radiosignal being frozen)) It even can be transmitted in outer space, where it's -270 C^o (-450 F^o)

I believe heat also doesn't affect radiosignal.

BTW, Novosibirsk, where the SurruS system is operating now, in winter temperature can drop down to -25 C^o

So no worries here