[R-390] R-390 Balanced Antenna Input

[Walter Schulz]

Regarding the balanced Antenna Input. Western Electric use to make WE754 Cable which was double shielded and used for the transmission of video. DB loss per 100 feet at 148 Mhz was less than 1DB.

There were two leads, white was the tip, and blue was the ring side. The connectors were made by AMP connectors, and would assume they are still available.

Using for WE754 for ham radio or unbalance, simply twist the white and blue wires together and solder. The input impedance becomes approximately 52 ohms.

I thought this might be helpful to all who own R-390A receivers.

Walter