What a novel and smart suggestion. Makes one wonder how many TX's out
there have never experienced a tune-up... They don't have any moving parts. Older radios may have parts like descrete coils (sometimes with slugs) that can can change their size slightly over time (mechanical, maybe due to just moving the radio around) so its possible that the output spectrum could get misshapen (i.e. "splash over to adjacent channels"). Its even possible for crystals to age or get damaged. But in general what you buy should be what you'll use until the mechanical parts wear out.
That's not to say that it wouldn't help to look at the output spectrum from time to time, but (IMO) suggesting to people that radios somehow require regular servicing like a car is an application of FUD. Martin Usher (........time for the flameproof suit........) PS. Receivers don't emit R/F -- actually they could but they shouldn't -- but if the transmitter is prone to drifting around then the receiver would be as well, they've got the same kinds of internals as the Tx. RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED] Please note that subscribe and unsubscribe messages must be sent in text only format with MIME turned off. Email sent from web based email such as Hotmail and AOL are generally NOT in text format
