We found this balanced modulator circuit for DSB and possibly SSB transmissions in US 1980s telecommunications documentation. The diodes can be replaced with equivalents.
The purpose of this circuit is to re-trigger slow scan circuits used in the 1980s on low frequency...
In the previous circuit (CB15632E) the steps just go up. To obtain ascending and descending cycles...
This circuit is from an old Japanese documentation from the 60s. The circuit uses transistors from...