• Country
• United States of America (USA)

• Manufacturer / Brand
• Motorola Inc. (ex Galvin Mfg.Co. Chicago); Schaumburg (IL)

• Year
• 1957 ?

• Category
• Commercial Receiver (may include amateur bands)

• Radiomuseum.org ID
• 330158

Click on the schematic thumbnail to request the schematic as a free document.

• Number of Tubes
• 9

• Valves / Tubes
• 6X8 6BJ6 6BJ6 6AV6 6AQ5 6BJ8 6AN8 2D21 6BW4

• Main principle
• Special principle (see notes); ZF/IF 265 kHz

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Alternating Current supply (AC) / 120 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 5 inch = 12.7 cm

• Power out
• 1.5 W (unknown quality)

• Material
• Metal case

• from Radiomuseum.org
• Model: Conelrad Monitor DS-9660B - Motorola Inc. ex Galvin Mfg.Co

• Shape
• Tablemodel, low profile (big size).

• Notes

• The Motorola DS-9660B Conelrad monitor receiver has 6 switchable broadcast band tune positions with provisions for 5 crystals including the standard 640 and 1240 KHz positions. The sixth switch position is a tunable setting. The unit was manufactured for Motorola Inc. by the Multi-Products Company, makers of Multi-Elmac ham equipment. The monitor was used by commercial broadcast radio or TV stations and was designed for optional rack mounting or table model cabinet.  The circuit uses a 2D21 thyratron to drive a relay for the alert triggering circuit. Terminals on the rear panel allow connection to the relay for driving a remote warning alert. Terminals are also available for a remote speaker.  The schematic is dated January 23, 1957.

• Author
• Model page created by Rich Post. See "Data change" for further contributors.

• Other Models

• Here you find 4554 models, 2959 with images and 4049 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Motorola Inc. (ex Galvin Mfg.Co. Chicago); Schaumburg (IL)