Found in 969 documentation, this circuit generates sweep signals from 1 Hz to 100 kHz. The components used are from the period, and equivalents can be used.
This Baqxandall tone control can be used with any low Power audio stage as the input of a audio...
This circuit can be seen in several publications of the same time. The circuit is an application note...
The power supply for this circuit found in a QST magazine is given in the previous circuit. The...