My Orbit Says 6-12 on the ID plate but is a proportional 6 channel on 27.145 , center loaded antenna. Charger is built into xmtr. The fun part was the trim adjustments were knobs with no markings at all to show center . Broke the centering spring on main rudder knob so many times I put a range mark on it so I could still find center! Still have it along with about a dozen other old singles. Seems most on here don't know what a multi-meter is & only half of them know how to use it , that would be a good thing to give a thread on. MAX H.