From where you are, is there a business within sight?

From where you are, is there a neighbor in sight?

If business is in sight, ask the business if you can install a radio on their roof that will require almost no maintenance. Give them a number of once a year (you probably won't need to go up there once a year, but its a good expectation just in case)

Set up a solar charged + battery meshtastic radio in client router mode up there.

If neighbor is within sight, talk your neighbor. Be neighborly. Talk about if there was a natural disaster would you have each other's backs. Then get them into meshtastic so you can communicate in adverse circumstances.