For a mobile you truly want a vertical mounted antenna from the top of the vehicle when possible on 40m. Probably similar on 30m I would guess.
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If using a hitch mount, you'll want it to be WELL bonded to the vehicle. This will give much different performance over a roof mounted antenna.
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I'm not sure where you're located, but I would expect you to get in during the night on 40m. But not at all on 30m.
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Right now on 30m in the dark hours, I can't get out at all. On 40m I have several gates across the country I can get into. This seems to always be the norm for me.?
