It appears that spektrum is no longer making transmitter moduals for surface use. Anybody know what's up?

Probably not cost effective as people phase out their older radios

Cheers

Spektrum cleaned up while the manufactures resisted the move. Now most all the main manufactures, as well as several china companies have better systems(or as good as) for better prices, and most new radios don't need a module as they finnaly went dedicated 2.4.

Modules were in use way before Spektrum came on the scene. All major radios used modules to change bands and frequencies. Futaba had 27MHz AM and FM modules, 75MHz FM in PPM, PCM and HRS. You used to be able to change Futaba mods to go from the race track to Mini-Z just by changing the mod.

I happen to race with the product manager from Horizon that was responsible for the specs of the 2.4GHz Spektrum modules and he had several prototypes at the track testing them. I was involved in radio transmissions so naturally I was able to speak to him about it.

Now that 2.4GHz and bound TX/RX systems are here to stay the major manufacturers have built dedicated units since you can bind your transmitter to several of the same type receivers.

Unfortunately for those with older radios is that the demand had dropped off and therefore they stopped making the modules. The only place I know of to get mods is in the secondary market.

Thanks guy's! I kinda figured it was along these lines. I have a couple 3pks transmitters and a bunch of spektrum recievers and was looking to get a spare modual.