At my wit's end

[AgentJeffy]

Please. Anyone I don't know what else to do anymore.

I have a Cobra 29 LTD Classic, 18' Firering coax, a 4' Firefly. The Firefly is mounted on the roof of my SUV with the tuning screw removed and the mount attached to my roof racks horizontal bar and is grounded by a wire to the body of the truck. But I can NOT for the life of me get my SWR below 3 on 1 and 40.


Channel 40 is higher than 1 but not by much at all, they're pretty much even. If I put the tuning screw in at all the SWR goes up on both channels. Is it that the antenna is too long because it's on my roof? Or too short? Should I get a regular Firestik? I just replaced the coax and the mount because I assumed it was the problem but it obviously wasn't. I

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