• Country
• United States of America (USA)

• Manufacturer / Brand
• Hammarlund Mfg. Co. Inc.; New York, NY

• Year
• 1971/1972

• Category
• Commercial Receiver (may include amateur bands)

• Radiomuseum.org ID
• 44074

• Number of Tubes
• 21

• Valves / Tubes
• 6BA6 6BA6 6BA6 6BA6 6BA6 6BA6 6BA6 6C4 6C4 6C4 6AC7 6BE6 6BE6 6AL5 6AL5 6AL5 12AU7 6V6 5R4GY 0A2 12AU7 12AT7

• Main principle
• Superhet with RF-stage; ZF/IF 3955/455 kHz; 3 AF stage(s)

• Wave bands
• Broadcast plus more than 2 Short Wave bands.

• Power type and voltage
• Alternating Current supply (AC) / 90-260 Volt

• Loudspeaker
• - This model requires external speaker(s).

• Power out
• 2 W (unknown quality)

• Material
• Metal case

• from Radiomuseum.org
• Model: Super-Pro 600 SP-600-JX-21A [USB-LSB with product detector] - Hammarlund Mfg. Co. Inc.; New

• Shape
• Rack

• Dimensions (WHD)
• 19 x 10.5 x 16.5 inch / 483 x 267 x 419 mm

• Notes
• Last model of the SP-600 series. Includes product-detector for SSB reception, not only a BFO! Very scarce. See also model SP-600-JX. The model has knobs JX21A different from previous models because the silkscreen is printed on the front of the receiver instead of on the edge of the knobs.You can select the modes: USB-LSB-CW and MOD. The tunig meter is also different from the older models. Use 600 ohms external speaker

• Net weight (2.2 lb = 1 kg)
• 33 kg / 72 lb 11 oz (72.687 lb)

• Price in first year of sale
• 1,140.00 $

• External source of data
• Ernst Erb

• Source of data
• Communications Receivers

• Circuit diagram reference
• Rider's Perpetual, Volume 22, covering 1951

• Mentioned in
• Shortwave Receivers - Past & Present (3rd ed.)

• Other Models

• Here you find 144 models, 92 with images and 58 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Hammarlund Mfg. Co. Inc.; New York, NY