Re: [RCSE] Synthesized RF module vs multiple fixed modules?

[Raschow]

In a message dated 2/21/2006 12:38:53 A.M. Eastern Standard Time, [EMAIL PROTECTED] writes: In a message dated 2/21/2006 12:15:36 A.M. Eastern Standard Time, [EMAIL PROTECTED] writes: Any RF savants out there that can explain in scientific terms why a synthesized TX RF deck is either a good or bad idea? If one wants the option of more than 2-3 freq choices (to facilitate contest entry, crowded flying field conditions, etc), then a synth deck is the cheaper option (ditto with receivers).  Good Lift! Ah, but you said "scientific terms", so maybe cost is not your primary concern - some other considerations:  The current and future trend out there is "smart radios", consider pagers, cell phones, military radios, wireless computer links, FRS, etc - applications that number at least in the 100s of millions of units - so where is the most advanced (and best tested by experience) and (by volume) low cost technology available?! (but not in big numbers on our 72MHz band, the recently introduced Horizon DX6 on 2.4 GHz DSSS is the best benefit we've had - may there be more!).  By comparison, our single freq RC modules are very low density obsolete antiques - not necessarily bad (but probably not made with the best available components either, I've experienced 2-3 off freq Xtal failures in 45+ yrs of RC), unlikely to improve (no money in it), maybe at some point not even not practical to manufacture (but not quite yet).  The biggest volume is in cheap toys - not constructively relevant.  Synth freq technology is not new to RC, but has not existed in great volume/experience.  The Hitec Spectra has probably had the longest run/best chance for positive evolution.  Now JR, Fut & Mpx have similar units, but relatively little consumer field experience.  Did they benefit from Hitec and maybe other tech development & experience?  Who knows?  In our hobby, bad reliability = market death, so we can hope they were prudent!  Now all that wasn't very "scientific" either, but the detailed independent analysis/testing that would be isn't out there (nobody is paying for it!).  Good Lift!