Transmitter for remote control (T1536E)

This battery powered single-channel tube circuit was found in a Popular Electronics from December 1956. The components are from the period.

Crystal Controlled Oscillator (CB6186E)
This circuit is from Signetics' 80s documentation. The circuit generates 100 kHz signals according...
VHF Transmitter (CB1564E )
The small transmitter shown in the figure can generate signals in the range of 50 MHz to 200 MHz....
1 kHz oscillator (CB6909E)
This oscillator produces a modulated signal using a unijunction transistor. We found it in an...