Thank you for the tvfool report. I have turned it into an active link so that we can click on a callsign in the report to see the transmitter terrain profile if necessary.
http://www.tvfool.com/?option=com_wr...513404e68f4b75
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I read on line about placing my VHF antenna on a different mount and pointing it a different direction,
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That might help. CBC, channel 9.1, at about 181 degrees magnetic is in a different direction than most of your other channels at 220 degrees magnetic. Mount the VHF dipole on the same mast above the DB4e and orient it broadside (perpendicular) to the CBC signal.
https://www.antennasdirect.com/cmss_..._201402062.pdf
The VHF dipole is bi-directional, so either side can be used. Since it is a dipole it only has 0 dB gain, and CBC is much weaker than your other channels. If changing the aim of the dipole doesn't bring in CBC better you will need to replace it with a VHF-High antenna with more gain like the MCM 30-2475 or 2476 and combine it with the DB4e with a UVSJ UHF/VHF combiner.
The MCM antennas are inexpensive, have poor assembly instructions, but work OK.
http://www.mcmelectronics.com/produc...-2475-/30-2475
http://www.mcmelectronics.com/produc...-2476-/30-2476
Your signals are very strong. If the antenna was outside, a preamp would probably be overloaded. The signal loss with the antenna in the attic is difficult to predict. Try the VHF antenna with more gain first.
The signal monitor on the HDHR should help you. You might need to try different locations in the attic to find a hot spot for the signal. Hopefully, there are no trees or other buildings in the signal path.
It's interesting that you bought the DB4-PRO Grade Signature Series Bowtie HDTV Antenna. It is the stainless steel version of the DB4e that is needed when mounted outside in costal areas to resist corrosion.
You have some strong local FM signals that might interfere with the reception of CBC; an FM filter might be needed.
http://www.fmfool.com/modeling/tmp/a...7/Radar-FM.png