Another interesting one to restore.

[Radio Fixer]

Pretty easy to convert a DAC 90A to isolated chassis in US style. Create a new -ve rail and connect everything to it that isnt RF or IF and then connect this new rail to chassis with a low value cap shunted by a 220K discharge resistor.

Here's an article I did:

  DAC90a Isolation.pdf (Size: 141.84 KB / Downloads: 133)

The radio is now sold off on Ebay and the buyer was very pleased with it.

Gary