I finished wiring up my systems board, and tested my Spectrum DX6i TX, and my 3 channel MR3000 "Marine"RX. I used the throttle channel for the RMG Sailwinch, and the aileron control for the rudder. A problem arose with the aux. channel, needed for the jib trim. It was activated by the landing gear switch(CH.5), in effect, an on/off switch. I called Horizon Hobby, the importer, and explained that I needed that the elevator stick to connect to the aux. channel. After a long session of talking me through it, we were able to accomplish this via a programming called mixing. We, in effect, mixed (combined) the elevator and landing gear to operate simultaneously and then reduced elevator travel to +0 in both directions, and landing gear travel to +100, in effect, causing only the landing gear to output via the elevator commands.
Trials, showed excellent control of the jib trim, but no fine trim movement of the servo, although the display showed movement on the elevator. Checked the owner's manual, which stated only the four joystick channels had the trim feature. Another session with the tech. dept, revealed there was no way to mix the fine trim movements with the DX6i, although the DX7i had this feature. Bottom line, the MR3000 will not work for me. I inquired as to the signal range of the AR6000, a park flier receiver with extra long(for park fliers) antennae 3.75", and exceptional range. The Tech said there might be a problem with the signal reflecting off the water, due to the short antenna. I told him that no matter how long the antennae, the last inch which receives the signal can't be any higher than the deck, and 3.75" will reach the deck in our EC12's even if I have to raise the RX a bit.
I notice the antennae on the boat (Ricks?)on the web site has short antennae, maybe 4-5" at the most. Has there been any problems with signals reflecting off the surface of the water, causing loss of signal?
Sorry for the long winded post, but I thought I'd make everyone aware of the MR3000 shortcomings.
Paul