Allied Radio catalog 1955 (copyright 1954), p. 193.
Walter Ashe catalog 1955 (probably issued in 1954) , p. 13.
The Eldico VFO-2 was designed for use with the Eldico TR-1(TV), TR-2(TV), TR-75(TV) transmitters.
It is a tubeless design which requires no external power. A single coaxial line connected to the transmitter is all that is required.
