Welcome to the forum, clipfert:
The Amazon antenna wasn't the best antenna for you, so it was a good idea to return it.
There are several problems with it. It consists of a small antenna combined with an integrated 15 dB amplifier. The amplifier is supposed to make up for the low gain of the antenna, but that doesn't work because if the signals aren't coming out of the antenna, the amplifier can't create them.
Another problem is that the amplifier can be overloaded by strong signals, so an amplifier should not be used for your location. Your TV signals are not extremely strong, but your FM signals are. Your strongest TV signal KAET has a Noise Margin of 45.2 dB, with a signal power of -45.7 dBm. However, your strongest FM signal KPHF has a signal power of -15.8 dBm, which is about 30 dB stronger. See Attachment No. 2.
Interpreting Noise Margin in the TV Fool Report
http://www.aa6g.org/DTV/Reception/tvfool_nm.html
I suggest that you make some tests with an unamplified antenna with an FM filter inserted in the RG6 coax. The filter can be inside, out of the weather, because you will not be using a preamp. If you were using a preamp, the filter would need to be between the antenna and the input of the preamp.
The antennas to consider are the Winegard HD7694P, RCA ANT751, and Antennas Direct C2V.
http://www.solidsignal.com/pview.asp...enna-(hd7694p)
http://www.solidsignal.com/pview.asp?p=ant751
Different FM filters have different characteristics. You have strong FM signals near 88 and 108 MHz, so neither the Antennas Direct or the Radio Shack would do, unless you put one of each in series. See Attachment No. 3.
I suggest two FM filters or HLSJs in series. The HLSJ makes a good FM filter because it blocks everything below TV channel 7, including the FM band.
http://www.mcmelectronics.com/produc...-FM-88-/33-341
http://www.solidsignal.com/pview.asp?p=zhlsj
http://www.hollandelectronics.com/ca...-Diplexers.pdf
If you use the HLSJ as an FM filter, connect the coax to the High and Common ports.
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.
http://www.solidsignal.com/pview.asp...q=ground block