08-05-2025, 10:10 PM
Nope. That's B+ to the tube plates.
AVC is at the bottom of part 14 (2.2 meg) then feeds the grids in the rf amps. As the radio signal gets stronger the AVC voltage goes more negative. This in turn reduces the gain in the rf amplifiers. Strong signals reduce gain. Weaker signals increase gain.
AVC is at the bottom of part 14 (2.2 meg) then feeds the grids in the rf amps. As the radio signal gets stronger the AVC voltage goes more negative. This in turn reduces the gain in the rf amplifiers. Strong signals reduce gain. Weaker signals increase gain.
![[-]](https://philcoradio.com/phorum/images/bootbb/collapse.png "[-]")
