Hi agios11:
I would either replace your antenna with what you already have (RCA ANT751, excellent reputation), which you said has been performing well for the past 10 years and you can buy from various big box stores or online either at Amazon or RCA; or if you want something possibly a bit better, go with this:
https://winegard.com/products/hdtv-d...series-hd7694p
Just my two cents. I hope this was helpful.
BTW, please let the forum know what you finally decide and post your replacement. I'm sure it would be of interest. Thanks!
All the best.....