ORIGINAL: Bax

Many clubs limit the number of flyers in the air at the same time. That's to reduce the workload on the pilot and spotter. It also makes it easier to communicate between flyers. Transmitter impounds can be used for a lot more than frequency control of the non-spread-spectrum systems...sometimes, it's used to keep the selfish, irresponsible gits from running their models excessivly in the pits. It also helps with ground control of models ready to go. You really don't want a large gaggle of models running about on the ground and in the air. Having your model airfield have the same traffic problems as O'Hare ruins the fun of the day.