Every other day i swap mobile antennas from a sbb-5 to a diamond cr320. Iv noticed my swr is 3.2 on vhf and 1.1 on uhf with the sbb-5...the cr320 is flat swr and much older than the sbb-5. Why is my match so darn high ??? The mount is a pl with lmr-400 10' and the jumper from the meter to radio is rg8 (big stuff) @ 1.5 feet long...is it possible the one foot and a half rg8 jumper is causing problems when checking my match ? Meter is never inline except to test pw and swr every 2 months.