Cyberonic Internet Communications, Inc.
544 Pleasant Street
Worcester, MA 01602
They have a service designed for rural areas (you may need a rural address) that buys time on major cell towers. They have 4G LTE and provide a modem and external antenna. The service is unlimited. I've used it for about 6 months, view Netflix, etc., and had no issues. I haven't had to use the external antenna, just the small antenna on the modem.
While it is intended as a service for home use, I have found I can connect anywhere there is a cell tower that matches the modem. Sometimes I have to move the modem to a window. The carriers include Verizon, AT&T, and so on. The modem works only with one provider. Cost is $110/month.
I have a Amazon FireTV stick on my tv that links wirelessly to the modem and can connect to a variety of online tv services.