I've researched every possible solution for decent internet near Grafton, so I'll try to help you out.
From my research, WaveComm
might be your best option. I've never used them or contacted them, but I have been told they have a tower on top of Mt Cardigan and perhaps elsewhere, so they may be able to service your home.
Currently, we have Fairpoint DSL (1.5 Mbps down/768 kbps up) which is just slightly better than dial-up.
See this post for more details on DSL in Grafton
A couple years ago the town of Enfield, NH contracted with NH Fast Roads
to canvas the entire town with consumer-available fiber service. Our house is just over 1.5 miles from the last connection in Enfield and when I enquired, I was given a rough quote of $10k-17k to extend it to our house. But at least that is an option (if I could afford to pay for it). The fiber is installed by Fast Roads and then you'd have a choice of ISPs: WiValley
for consumer service which is $79.95 for 50 Mbps down/25 Mbps up service and $109.95 for 100/25 service + $75 setup on each or FirstLight Fiber
(formerly G4 Communications) for business service (I was quoted $90/month for "best effort" 10 Mbps/10 Mbps + $250 setup fee). I have confirmed the speed on Monday of this week on a 50/25 WiValley connection of 46.83 Mbps down/21.31 Mbps on speedtest.net, so it actually is that level of service.
I am currently working with a neighbor who has fiber service to transmit it wirelessly to my home. I have the equipment
in place to support it and also his cooperation to make it happen. I'm currently waiting on WiValley to set up an account for me (they're going to treat his home as an apartment building basically, and set us up with separate accounts with separate service levels, speeds, and isolated traffic).
The next best solution I've found is an unlimited 4G/LTE Verizon Wireless account. Unlimited accounts are not offered anymore, but they can be transferred from person to person (if you can find someone who is willing to give their's up). It's called an Assumption of Liability
transfer. The Assumption of Liability Department is (888) 832-4540. I've found people on eBay willing to sell/transfer their unlimited data account on eBay, but I haven't looked in probably a year. An unlimited account was going for about $300 when I last checked eBay. When I tried this method, I was getting up to 10 Mbps down, but because of the latency it would not work with a VPN connection. Check out this post
for more details.
There's always satellite internet
, but there are obvious drawbacks to that: high latency, download caps, and potential weather issues.
Currently, if I need something fast immediately, I've found Margarita's in Lebanon (near DHMC) to be decent (30 Mbps down), Mickey's Restaurant in Enfield (13.5 Mbps down/3.75 Mbps up), Dunkin Donuts in Canaan (6.75 Mbps down/1.0 up) or 99 Restaurant (5 Mbps down). There's also free wi-fi available at DHMC and also Dartmouth College.
Hope some of that is helpful. Please report back once you do figure out a solution. Good luck.