I found an old training video about AM vs FM. It explain grid voltage in tubes along the way.
Antenna Maintenance
The home-brew yagi blows around in the wind a bit, so I brought it down this morning as it started to snow, so I could straighten and tighten the elements. I realigned it for the 985 repeater, and checked it to be giving -96dBm.
I also resoldered some radials on the 1/4-wave ground plane antenna that go knocked loose in the tree.
