Hi i'm new to the hobby...duh (beginners forum) and i bought an avistar..my instructor told me to look out for a prism online.. i have seen a few with this thing called the spectra? and to me it seems like it lets you switch to whatever freq. u want !! IS THIS POSSIBLE??? is it legal lol ? thanks for your answers..

Yes, the Prism (with Spectra module) can be set to mate with any receiver frequency (in the USA--72MHZ) and with either negative shift (Futaba/Hitec) or positive shift (JR?Airtronics). The later version is the Eclipse; has a seven model memory versus 3 for the Prism. In general, I would not buy a used transmitter unless I knew the previous owner and or received a guarantee. A new Eclipse is just over $200 and includes a new battery, Spectra module and charger and would probably serve you longer and more reliably.

Just to add. I have bought and/or sold 3 transmitters online. They all looked good. 2 were supposed to be new and one was good/used. They have all worked flawlessly. One has been sold for an excellent price. Just another opinion of whether to buy used or not and from strangers. Karma here and ratings on Ebay plus pictures of the units contribute to a good warm fuzzy feeling. I have an excellent Prism/Spectra combination which was new when I bought it online and an Eclipse that was new when I bought it online recently, also with Spectra. It/they are great! Just FYI!!

If you buy a used Prism only shop for the Prism 7x model and pass on it if it does not have the Spectra module. Many were originally sold with single frequency modules. Since the Prism is now discontinued there are some great deals out there.

I have used four of them for about eight years now and also use an Eclipse 7 all with Spectra modules.

John