RE: Futaba 9zap W2 range check
Dan,
The modules have insufficient cooling on the final transistor for it to operate continuously with a retracted antenna. However, it does cope with the minute or less it takes me to walk 100 ft and wiggle the sticks. I generally turn it off once I'm done testing if the model has a PCM receiver (I mostly use PCM) since the 9Z is a battery hog.