I now run two proxies and don’t aim to space them evenly. I placed them with enough overlap that a BLE device can reach either. Two boards in the same room would’ve cost the same and fixed nothing.

The iShares 0-3 Month Treasury Bond ETF owns 0-3 month bills and pays monthly. Right now, its yield is 3.7%, which will likely rise a bit, as short-term government debt yields roughly 3.9% to 4.1%, ...