Isn't RG6 coax 75 ohm TV cable? I think your scanner is designed to
take 50 ohm coax for optimum performance. Suggest you change the coax
to 50 ohm and if you have to use 70 feet, upgrade to something like
RG8/U or RG213.

Steve


wrote:
Hello All, I've got some questions about outdoor antennas. I monitor a
motorola type II trunked system in Colorado Sprigns, CO.

I've got a 20-043 discone from RS, a uniden bcd396t, and 70 feet of
RG-6 quad-shield of cable inbetween. The antenna is on a mast 12 feet
in the air above the house.

Much of the radio communication is choppy; is that a artifact of how I
set up the system? Is this a good setup of cable/antenna/radio? I've
read some information about tuning antennas, but is that something I
still need to do in this case?

Thanks!