• Country
• United States of America (USA)

• Manufacturer / Brand
• Drake, R.L. Miamisburg, Ohio

• Year
• 1971–1977

• Category
• Commercial Receiver (may include amateur bands)

• Radiomuseum.org ID
• 73731

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

• Number of Transistors
• Semiconductors present.

• Semiconductors

• Main principle
• Superhet, double/triple conversion; ZF/IF 5645/50 kHz

• Wave bands
• Broadcast, Long Wave and more than two Short Wave bands.

• Power type and voltage
• Alternating Current supply (AC) / 120/220 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)

• Power out
• 3 W (unknown quality)

• Material
• Metal case

• from Radiomuseum.org
• Model: Maritime Reserve Receiver RR-1 - Drake, R.L. Miamisburg, Ohio

• Shape
• Rack

• Dimensions (WHD)
• 19 x 7 x 11 inch / 483 x 178 x 279 mm

• Notes
• Maritime commincations receiver, covers all maritime bands and 4 additional 500 kHz segments with additional crystals; AM, USB/LSB;
  Commercial / maritime variant of the SPR-4 also sold as DEBEG 7220, Hagenuk EE421, SAIT MR1541, ITT Mackay Marine 3022A or CRM 3702.

• Net weight (2.2 lb = 1 kg)
• 6.3 kg / 13 lb 14 oz (13.877 lb)

• Source of data
• Shortwave Receivers - Past & Present (3rd ed.)

• Author
• Model page created by Martin Bösch. See "Data change" for further contributors.

• Other Models

• Here you find 154 models, 99 with images and 61 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Drake, R.L. Miamisburg, Ohio