We may never get a good location for frost quakes, because of simple physics. Nearly all the seismometers are in remote fields far from trees and electrical facilities. The standard arrangement is to use a solar panel, and a satellite dish. That means we can put them in anywhere.
The downside happens during a miserable ice storm and when temperatures plunge down to the minus-minus zone. Many of the seismometers are out, the panels are covered with ice and the batteries have run down. These are the best and quietest sites, there are some seismometers with a power connection, but they are less sensitive. My contact (yeah!) is going to look, but be prepared to be sad. :(