I bought a 7C Futaba radio from tower hobbies did a short range radio check took off in a PILOT Rc YAK 54 100 ft out rolled to right and crashed,okay I took it like a man , ordered another yak from pilot Rc this time I asked my son a crack Rc pilot to do a flight check on my new plane he asked me if i had done a radio check and checked everything out I said yes he took off and 100 ft out same thing happen rolled to rright and crashed again both of this planes cost me 435.00 each at my door send radio to Futaba for a check their repair shop said the antennas were not hooked up inside radio ???? And is my fault for not doing a long range radio check i know that 90 % of you guys WILL say RIGHT IT WAS YOUR FAULT Go figure !! I BUT TO ALL US GUYS THAT BUY FROM HOBBYKING EVEN THE HIGH DOLLAR BRANDS COME out the box bad sometimes LESSON LEARNED THE COSTLY WAY NOW I DO 200 yard radio check on all new models!!................bub8....