first check all connections
then get the ant up in the air 30 feet minimum about housetop
if you still have problems then cut coax run
70 feet coax for a 12 ft above house run.....
that's first place i would look
was coax new or used when you put it up


--
Don
SEMPER VIGILIS
DUTY, HONOR, COUNTRY
http://www.californiaminutemen.com/cmm/maritime.htm Maritime Borderwatch
http://www.jcmsara.org Ham radio link
http://myweb.cableone.net/wxfreqrs/ Pascagoula Ms Real Time Observations
wrote in message
ups.com...
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!