Thanks everyone! I'll give these ideas a try today and then report back with the results.
Chuck, I upgraded to the Sensar Pro. It appealed to me because it seemed to simplify things. I threw the VCR player in the trash. My rig does not have satellite so really all I need is a simple device to switch from OTA to Campground TV. wa8xym on irv2 is a proponent of the Sensar Pro https://www.amazon.com/gp/product/B004NFTOLY/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 but if I'm missing something re: why the BOMB is better, I still have it). In one of a few posts, he stated:
The Sensar Pro is all of the following:A scanner, finding the strongest TV signal in your areaA signal meter.. You can let it choose the signal to mesure or you canA "Lister" which lists all the carriers found (See note)A SWITCH choosing Cable or OTAA variable gain Amplifier/Attuentator IT can both cut down on signals too strong and add additional amplifiction to weak signals.A power supply for the mast heat amplifierA splitterit also has the ability to give you an AUDIO indication of signal strength.I think that covers it all.. NOTE that it will NOT work with many home TV antennas unless you know how to block the DC as the antenna can appear as a SHORT at DC... Many do. THough I'm nto sure all do.. (I build my own antennas for some frequencies thus am familiar with antenna design)But for In-home use, since you do not need to scan and re-scan for channels, a simple "This channel chart uses this broadcast channel" chart and the TV's signal strength meter is all you need.Use the Sensar Pro in the RV with a Sensar IV on the roof, Designed to play nice together.