Seeing as how no one replied to your post from 2003, I will hi-jack it with a tangent, yet related topic.....Dog tracking collar jamming. You see, every year during deer hunting season, hunters are still allowed to hunt with dogs around where I live for a period of time. These particular hunters have zero regard or respect for private property. They release their dogs on bordering state-owned land and intentionally run their dogs through our 1500 acre property to drive the deer out. They ride the surrounding roads with radio telemetry tracking receivers to track their dogs and then race their trucks to where the deer running dogs might cross the road onto state land in hopes of getting a shot. As a hunter myself, I invest a lot of time, effort and money in still hunting in a tree stands on our property so it goes without saying that these dog hunters drive me crazy each year. I've tried everything from confronting the hunters, policing the property and catching their dogs and escorting them off the property back to their owners. While I can legally charge the hunters with trespassing, I cannot do this with their dogs and the hunters are smart enough (most times) to stay off the private property. They just give me a shrug and a grin when I complain about their dogs on my property. The best solution is to lobby the politicians to outlaw dog hunting all together but that is a tall order here in the south where dog hunting tradition still prevails. SO.... Now I want to try another tactic in my little battle and disrupt these annoying hunters by jamming their radio dog tracking systems in hopes that maybe they take their hunting elsewhere. First of all, is this legal? As mentioned above, the frequency range of these devices is between 216.005 to 219.995mhz. Jamming this range would only affect these specific tracking devices right? Is it even possible to jam these thing over a 1500 acre property? Any insight would be appreciated.