Automatic Regeneration Control

[pwdrive]

I think this pre dates Vackars paper (1949) There is a mention in this article of using a hybrid circuit in oscillators using a tickler/collpitts arrangement mentioning it's near constant amplitude when tuning. If you come across an unusual regen circuit in a receiver or Lo in a superhet then maybe it's an attempt to achieve constant amplitude....

http://www.vacuumtubeera.net/Superhetero...lators.pdf

Lawrence.