Have you tried this website?
I did. Pretty sure I did the same thing in 2018 when I got a GMRS licence and once I figured out I might have to get another licence and learn Ham I put it on hold. I'm in zip 03045, and there is a medium sized mountain behind me that has all the area TV and Commercial Radio, like a dozen towers, I'm pretty sure one or more those are Ham repeaters I should be able to get on at some point. I've been scanning the bands as well on a Uniden scanner thinking I might get lucky with the GMRS, but I don't think I'm finding it.
These are the frequencies I have in my scanner - a Uniden Bearcat BC125AT, I put a Diamon RH77CA aftermarket antenna on it and the signal strength went way up, not sure it gets me any additional frequencies, but all the reception bars peak out and the static is mostly gone on just a handheld scanner, so - I'm thinking a similar power Ham radio would get similar reception, but I don't know.
* 444.2000 N - ??NN1PA Repeater, on mountain right behind me
C.168.2
Amateur radio NN1PA 444.2 repeater at Goffstown, New Hampshire
www.repeaterbook.com
* 146.85- Y Ham?
* 147.21 - Y Ham?
* 147.135 - Y - H? Local?
* 146.6850 - Y - H? Localish?
462.5750 - N - GMRS - Pembroke, NH, no signal
642.550 - N - GMRS, Manchester, NH - no signal
154.355 - Y Ambulance
157.5 - N Town Trucking
461.2 - N Local Corporation
159.3255 - N Fire
156.1950 - N Town
460.05 -N Corrections
152.33 - Y EMS
170.6 - N New Boston Space/Air Force
154.16 - Y Town
159.1050 - Y Fire
170.15 - Y, Town, but just computer sounding tones infrequently
152.36 - N Ambulance
153.86 - Y Fire
154.57 - Y Emergency
151.955 - Y Town
151.625 - N Town
154.6 - N Town
158.85 - Y Police
154.25 - Y Fire
154.515 - N Local College
140.2 - N NH National Guard
269.4 - N Air
124.9 - Y Air, cool frequency, I can see the planes out my livingroom window, and hear the pilots landing take off stuff, 7,000 feet, etc.
125.05 - N Air
125.825 - N Air
127.35 - N Air
134.75 - N Air
27.025 - Y CB, choppy signal
27.2850 - Y CB, choppy signal
27.2050 - Y CB, choppy signal
27.325 - Y CB, choppy signal
151.535 - Y School Bus
155.7075 - N Air Security
172.6 - N Fed FAA
172.15 - N Fed TSA
435.9250 - Y State Police
154.3550 - Y Emergency
158.85 - Y Police
453.6750 - Y Police
I'll read through the links, I have difficulty telling what frequency is Ham or GMRS and I've been looking at references - but the Ham stuff quickly gets into terms I'm not familair with. I'm still trying to figure out if there is any repeater near me I can get on with any analogue technology, or if I'm wasting my time and it just isn't possible. I get zero over the air TV stations at my house with a decent antenna, and I know they broadcast right off the top of the mountain, so - maybe I'm in some kind of weird blind spot behind one of the hills between me and the transmitters up there. I get pretty good radio, and some decent scanner traffic, so - there's some signal here, very weak Cellular. Maybe this is why I'm not getting anything from the listed repeater when I'm scanning. Maybe I'm doing it wrong. I don't know. I don't think I'm doing it wrong, but it isn't working.