Sonar MB-611

Object/Artifact

-

Radio Alpha

Image: QST, Jun 1947

Image: QST, Jun 1947

Name/Title

Sonar MB-611

Description

6/10/11 Meter FM Transmitter

Category

Transmitter, VHF

Made/Created

Manufacturer

Sonar

Date made

1947 - 1949

Dimensions

Height

7 in

Width

5 in

Depth

10-1/8 in

Valuations

Value

$72.45

General Notes

Note

QST, Jun 1947, p. 119. Some info: Allied catalog, 1948, page 162. Lafayette catalog number 89, p 172. QST, May 1954, p. 115. (probably NOS) For fixed or mobile operation. Requires external power supply. Uses "exclusive Sonar phase modulator." Crystal controlled, but will accommodate an external VFO. Tuning capacitors are screwdriver set with locking nuts. Features a dual "magic eye" indicator for tuning and deviation. Deviation is adjustable from 2 to 3 kHz. Input for crystal or dynamic mic with an output of –52 db or better. Will match "any type" of antenna or feed line. Supplied with 10/11 meter coils. Six meter coils optional. Output power: approximately 22.5 watts Power requirements: 200 to 600 VDC @ 100 mA 6 volts @ 2.6 amps standby, 10 to 20 amps transmit.