Thanks for the interesting photos. CH 9 does need to be stronger.
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Moving the antenna just a little bit, less than a foot, reduced the signal strength. Moving it 4-5 feet and the signal disappeared. This is the same result I got with the 8-bay bowtie. Diffraction?!
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The CH 9 signal at your location has a non-uniform field. You must locate your VHF antenna where the CH 9 signal is the strongest, which will require trial-and error. A preamp will not help you if a good signal isn't coming out of the antenna terminals; GIGO.
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Is it possible the 25 ft cable is acting as an antenna?
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You can test that theory by grounding the coax.
If the antenna is outside, the coax shield should be grounded with a grounding block that is connected to the house electrical system ground with 10 gauge copper wire for electrical safety and to reject interference. For further compliance with the electrical code (NEC), the mast should also be grounded in a similar manner to drain any buildup of static charge, but the system will not survive a direct strike.
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This is pretty frustrating!
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Yes, I agree. It will require perseverance.