[whytheheckme]

Have you tried this range. Not knowing how large your gym is, but if it's a typical gym, you shouldn't have a range problem at that distance.

Now, if you're talking a stadium.....

If you don't have any kind of tether running from where you are to field-side (i.e. to allow the regular radios to be closer together), then you need to create some kind of wireless relay system.

I think we'd like to hear back as to weather you simply tried it first. Then we can work from there.

Jacob