08-24-2012, 08:23 PM
Join Date: Mar 2012
Guess I need to know a bit more.
You say groundplane and dc ground are bad, yet SWR reads good. Define good - 1.5 or less? This shouldnt be.
When you say modulate, you mean...
Have you adjusted the internal modulation of your radio, or do you use a high gain mic?
Have you verified good coax with an ohm meter?
Have you verified that the antenna mount is grounding to the tailgate, and that your ground straps are pulling good ground to the frame? Basically that the common ground is connected to the antenna mount (and coax sheild).
Have you checked your battery connections?
No intention on insulting your radio knowledge, just trying to start from the beginning troubleshooting this one.
Additionally, have you tuned the SWR in an open place (not a garage), with the doors closed (as it would drive) wihtout local interference (power lines & such)?
That wilson is a counterpoise dependent antenna, correct?
I want to lean towards a loose connection, if it tests fine until the modulation goes through the line at an increased wattage that seems to be a draw problem. Or a bad meter.
“Coming of age in a fascist police state will not be a barrel of fun for anybody, much less for people like me, who are not inclined to suffer Nazis gladly and feel only contempt for the cowardly flag-suckers who would gladly give up their outdated freedom to live for the mess of pottage they have been conned into believing will be freedom from fear.”