All items tagged with FM and Power Supplies (3)

| At the heart of this power supply is the type 723 voltage regulator. Despite its age, the 723 is still popular among radio amateurs becau...

| The greater part of this month's instalment is devoted to the operation of the microprocessorcontrolled synthesizer used to tune the RF...

| This second part of the artide was originally intended to deal with the adjustment of the main tuner board only. However, following many...