A receiver doesn't have range, it either receives the signal or it doesn't. The transmitter has a range based on its transmit power. You could jam the receiver from the sidelines if you used enough power. It doesn't matter if the software is encrypted, unless its spread spectrum, frequency hopping but I can't imagine it would be. Even then, you could jam it over the whole frequency range. Its just a question of having enough power to essentially deafen the hopper's receiver by drowning out the the gun's transmitter. Hard to do when the gun is so close to the hopper but with alot of power it is possible.Haven't looked it up, but I'm sure they will have thought of this and the range for the RF transmitter/receiver will be no more than 30cm (1ft) most likely - Doesn't need to be any more than that when mounted on a marker.
-Will
a stong enough signal? id go the other way, if your marker and hopper are far away then your doing something wrong on the field! i think a weak signal that can only be picked up at a very (im talking centermetre) close ange would be better. maybe a weak receiver would prevent interception via 'other' uses/hackers....Thinking about it you wouldn't need to transmit the exactly right signal.
All you would need is a strong enough signal over multiple frequencies, it would drown out the RF transmitter in the marker. That in itself would cause probems.
But your probably right, pros would not risk it.
DP
Yeah but if the receiver can't pick it up due to being drowned out by a 'jamming signal' it don't matter if its encrypted.It's not different frequencies it's encryption IIRC.