Precision Crystal Calibrator CIR22334S CB21784E (CB21784E)

We found this circuit in a 1977 radio documentation. The circuit uses TTL frequency dividers from the time.

Two Transistors Amplifier (CB918E)
We found this two stage transistor amplifier circuit using RC coupling in a magazine published in...
VHF to FM Converter (CB16826E)
With this circuit it is possible to receive VHF stations up to 100 MHz on a common FM receiver tuned...
Field strength meter (CB8220E)
This passive tuned circuit was found in a 90s Popular Electronics. The coils must be according to the...