Futaba R616FFM 2.4GHz FASST and Futaba R6106HF 2.4GHz FASST

Please help ... they both appear to be the same are they both compatible with the Futaba 6EX 2.4GHZ FAAST Radio System

Thanks for helping in advance 

Hi Divey,
electronically u will not find any difference. basically the diff is in location of connectors. For airplanes it is more convenient to connectors on top of the Rx (FFM), and for Helis it is better to have them at the end (HF) and u now have the HFC also lol. The C is to tell u that it is meant for Carbon fuselages where u get an extended coaxial antenna.
Also BEWARE, HF is a short range Rx meant for indoors, and HF is a mid range Rx which can use upto 50 in span planes and 500 size helis.
Ramesh Tahlan

Thank you Ramesh Sir, your knowledge of RC makes you a role model for people like us ....

Sorry made a typo error
The R6106HF is a short-range Rx for indoors, park flyers and helis up to 450-size. The mid-range R6106HFC can handle up to a 50 span aircraft or 500-size heli, and includes an extended coaxial antenna perfect for carbon-fiber fuselages.
Ramesh Tahlan

one more information
Futaba receiver R616FFM is designed for use with park flyers or indoor aircraft. Compatible with micro connectors only
Your standard servo connectores will not fit into this Rx.

Ramesh Sir,

Can I fly .46 size nitro planes using the R616FFM, how is the range is it advised to fly 46 size nitro planes with this ? Also any way we can put mircro connectors to the existing futaba 3001 servos ?

divay,
if u want to change the connector of standard servos to micro connectors, u will have to order the micro connectors and the crimping tool. More importantly, be careful what servos u use, dont exceed the current handling capability of the RS, or u have a distaster waiting to happen, best ot use micro servos which come for this RX
Ramesh Tahlan