• Country
• United States of America (USA)

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

• Year
• 1937/1938 ?

• Category
• Commercial Receiver (may include amateur bands)

• Radiomuseum.org ID
• 113113

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

• Number of Tubes
• 16

• Valves / Tubes
• 6K7 6K7 6L7 6J7 6D6 6D6 6D6 6B7 6C6 6B7 6C5 6F6 6F6 6F6 5Z3 80

• Main principle
• Superhet with RF-stage; ZF/IF 465 kHz; 3 AF stage(s)

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

• Power type and voltage
• Alternating Current supply (AC) / 3 taps: 105; 115; 125 Volt

• Loudspeaker
• Permanent or electro-dynamic (moving coil), system not known yet. / Ø 8 inch = 20.3 cm

• Power out
• 10 W (unknown quality)

• Material
• Metal case

• from Radiomuseum.org
• Model: Super Pro SPR-110LX - Hammarlund Mfg. Co. Inc.; New

• Shape
• Rack

• Dimensions (WHD)
• 19 x 10.5 x 14.2 inch / 483 x 267 x 361 mm

• Notes

• The Super Pro SP-110L series is similar to the SP-110, with one or two low frequency bands replacing one or two broadcast or sw bands. Typical frequency coverage was 100-200 kHz, 200-400 kHz, 2.5-5.0 MHz, 5-10 MHz, 10-20 MHz, but other band choices were offered, such as 150-300 kHz, 540-1160 kHz, 1160-2500 kHz, 2.5-5.0 MHz, 5.0-20 MHz.

  Two RF amplifiers, 465 kHz IF with continuously variable bandwidth. An optional crystal filter was offered (X suffix), as well as the rack mounting version (SPR-100 Series).

  The receiver was delivered complete with 8" external speaker chassis and separate power supply. 

  Please note the additional Information at the page of SP-100 Series Overview.

  In addition to the rack model a desktop cabinet model SP-110LX was manufactured.

• Source of data
• - - Manufacturers Literature

• Mentioned in
• Communications Receivers

• Author
• Model page created by Emilio Ciardiello. See "Data change" for further contributors.

• 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