If you don't want to change companies or if State Farm does not write homeowner's policies in your state, ask for a "rider" to be added to cover your equipment. Most companies will offer this, if you ask, but usually you have to ask. Strangely, if you rent, most renters policies would have covered the loss.
Note to hams that erect roof towers: This is a perfect example of an insurance company dodging a pay-off. Think of the multiple excuses they will come up with if you have roof damage and or interior damage from a wind storm that is related to your roof tower. If the roof comes off usually the whole house is a loss. They may deny payment for the entire house and you would still be liable for the mortgage.
My State Farm homeowner policy covers towers and antennas, although without a rider for "replacement cost," they can depreciate the items covered. A tower that was $5000 new might only be covered for half that some years later, per a depreciation schedule. But for a small cost, a "full replacement value" rider is available.