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Hammarlund Super Pro

January 01, 1970

The Hammarlund Super Pro was an American-made radio communications receiver.

1939 ad for the SP-200 Super Pro

History edit

In March 1936, the Hammarlund Manufacturing Company initiated the first of the famous "Super-Pro" line, the SP-10 receiver, followed in January 1937 by the SP-100. Their efforts to improve the design resulted in October 1939 with the SP-200 series, an 18-tube, single conversion superhet receiver.[1][2] The SP-200 series Super-Pro receivers were manufactured through 1945, with thousands delivered to the military during World War II; they saw wide use by the U.S. Signal Corps as the BC-779 and the BC-794. During World War II, government agencies like the FBI used the 200 Series Super-Pro at their listening posts.[3] Many were used at ground stations in England to communicate with the Royal Air Force and U.S. Air Force armadas that flew bombing missions over Germany.[4] According to a November 1940 QST Magazine ad, "The fact that 'Super-Pro' receivers are used extensively by the U.S. Signal Corps and many other governmental departments, speaks for itself." At the end of the war, the market was flooded with surplus Super-Pro receivers at bargain prices, which may be a reason many working examples of this model are still found today. From 1946 to 1948, Hammarlund produced the SP-400 Super Pro for the amateur radio market. In 1947 the SP-600 Super-Pro receiver, which surpassed the SP-200 in performance, was introduced. The SP-600 series were widely used throughout the world for military, laboratory and commercial application.[5]

Specifications edit

SP-200 edit

 
SP-200 Super Pro

Various models of the SP-200 series cover 0.1–40 MHz in 5 bands. The radio and cabinet weigh 73 pounds (33 kg) while the separate power supply adds another 57 to 61 pounds. The Super-Pro was first offered in two basic models, with and without a crystal filter.[6][7][8][9]

SP-400 edit

 
SP-400 Super Pro

The SP-400 Super Pros were very similar to the SP-200's with the differences being mainly cosmetic. They were only made from 1946 to 1948 and had outboard power supplies like the earlier Super Pros. There were two of them, the SP-400-X which tuned from .54 to 30 MHz, and the SP-400-SX which tuned from 1.25–40 MHz.[10]

SP-600 edit

 
SP-600 Super Pro

The SP-600 Super Pro covered the frequency range of 540 kHz to 54 MHz.[11]

  • SP-600-J omitted optional crystal control of selected frequencies.
  • SP-600-JLX-2,15 and 23 covered .1–.4, 1.35–29.7 MHz.
  • SP-600-JX-17, 30 were for diversity reception use.
  • SP-600-VLF-31, 38 was limited to 10–540 kHz.
  • SP-600-JX-21A had 22 tubes and featured SSB reception.
  • SP-600-JLX-27 covered 0.2–0.4 and 0.54–29.7 MHz.
  • SP-600-JX-28 was R-620.
  • SP-600-JX-6 was R-274B.
  • SP-600-JX-12 was R-274A.
  • SP-600-JX-29 was produced for the CIA.
  • SP-600-JX-39 was produced for the FAA.

See also edit

References edit

  1. ^ http://www.radioblvd.com/Pre-WWII%20Ham%20Gear.htm Western Historic Radio Museum
  2. ^ http://www.antiqueradios.org/gazette/superpro.htm AntiqueRadios.org
  3. ^ http://www.radioblvd.com/hammarlund_super_pro.htm Western Historic Radio Museum
  4. ^ http://goto.glocalnet.net/bosradio/Hlund%20SP600eng/Hlund%20SP600eng.htm 20 January 2009 at the Wayback Machine HAMMARLUND SP-200 AND SP-600
  5. ^ http://www.hammarlund.info/histpage.htmlThe Hammarlund Historian 30 May 2014 at the Wayback Machine
  6. ^ Rovero's Hammarlund SP-210 SuperPro
  7. ^ Rovero's Hammarlund Series 200 Technical Data
  8. ^ . Archived from the original on 30 May 2014. Retrieved 16 April 2007.
  9. ^ Rovero's SP-200 Series History
  10. ^ Communications Receivers, The Vacuum Tube Era 1932-1981, 4th ed. Raymond S. Moore.
  11. ^ http://www.dxing.com/rx/sp400x.htm DXing.com SP-600

General references edit

  • War Department Technical Manual TM11-866, 31 August 1943 Radio Receivers BC-779-B, BC-794-B, and BC-1004-C and Power Supply Units RA-74-C, RA-84-B, and RA-94-A
  • Instruction Book for "Super-Pro" Radio Receiver (100-400 kc and 2.5-20 Mc), overprinted Radio Receiver BC-779-A and Power Supply Unit RA-84-A, Undated, Published by Authority of The Chief Signal Officer, Order No. 21109
  • Series 200 Super-Pro by Hammarlund, undated.
  • Communications Receivers, The Vacuum Tube Era 1932-1981, 3rd Edition, by Raymond S. Moore

External links edit

  • The incredible pre-war Super Pro, Western Historic Radio Museum

January 01, 1970
hammarlund, super, american, made, radio, communications, receiver, 1939, super, contents, history, specifications, also, references, general, references, external, linkshistory, editin, march, 1936, hammarlund, manufacturing, company, initiated, first, famous. The Hammarlund Super Pro was an American made radio communications receiver 1939 ad for the SP 200 Super Pro Contents 1 History 2 Specifications 2 1 SP 200 2 2 SP 400 2 3 SP 600 3 See also 4 References 5 General references 6 External linksHistory editIn March 1936 the Hammarlund Manufacturing Company initiated the first of the famous Super Pro line the SP 10 receiver followed in January 1937 by the SP 100 Their efforts to improve the design resulted in October 1939 with the SP 200 series an 18 tube single conversion superhet receiver 1 2 The SP 200 series Super Pro receivers were manufactured through 1945 with thousands delivered to the military during World War II they saw wide use by the U S Signal Corps as the BC 779 and the BC 794 During World War II government agencies like the FBI used the 200 Series Super Pro at their listening posts 3 Many were used at ground stations in England to communicate with the Royal Air Force and U S Air Force armadas that flew bombing missions over Germany 4 According to a November 1940 QST Magazine ad The fact that Super Pro receivers are used extensively by the U S Signal Corps and many other governmental departments speaks for itself At the end of the war the market was flooded with surplus Super Pro receivers at bargain prices which may be a reason many working examples of this model are still found today From 1946 to 1948 Hammarlund produced the SP 400 Super Pro for the amateur radio market In 1947 the SP 600 Super Pro receiver which surpassed the SP 200 in performance was introduced The SP 600 series were widely used throughout the world for military laboratory and commercial application 5 Specifications editSP 200 edit nbsp SP 200 Super Pro Various models of the SP 200 series cover 0 1 40 MHz in 5 bands The radio and cabinet weigh 73 pounds 33 kg while the separate power supply adds another 57 to 61 pounds The Super Pro was first offered in two basic models with and without a crystal filter 6 7 8 9 SP 400 edit nbsp SP 400 Super Pro The SP 400 Super Pros were very similar to the SP 200 s with the differences being mainly cosmetic They were only made from 1946 to 1948 and had outboard power supplies like the earlier Super Pros There were two of them the SP 400 X which tuned from 54 to 30 MHz and the SP 400 SX which tuned from 1 25 40 MHz 10 SP 600 edit nbsp SP 600 Super Pro The SP 600 Super Pro covered the frequency range of 540 kHz to 54 MHz 11 SP 600 J omitted optional crystal control of selected frequencies SP 600 JLX 2 15 and 23 covered 1 4 1 35 29 7 MHz SP 600 JX 17 30 were for diversity reception use SP 600 VLF 31 38 was limited to 10 540 kHz SP 600 JX 21A had 22 tubes and featured SSB reception SP 600 JLX 27 covered 0 2 0 4 and 0 54 29 7 MHz SP 600 JX 28 was R 620 SP 600 JX 6 was R 274B SP 600 JX 12 was R 274A SP 600 JX 29 was produced for the CIA SP 600 JX 39 was produced for the FAA See also editARC 5 BC 348 BC 611 ART 13 transmitter Collins Radio Hammarlund National HRO R 390A Vintage amateur radio Wireless Set No 19References edit http www radioblvd com Pre WWII 20Ham 20Gear htm Western Historic Radio Museum http www antiqueradios org gazette superpro htm AntiqueRadios org http www radioblvd com hammarlund super pro htm Western Historic Radio Museum http goto glocalnet net bosradio Hlund 20SP600eng Hlund 20SP600eng htm Archived 20 January 2009 at the Wayback Machine HAMMARLUND SP 200 AND SP 600 http www hammarlund info histpage htmlThe Hammarlund Historian Archived 30 May 2014 at the Wayback Machine Rovero s Hammarlund SP 210 SuperPro Rovero s Hammarlund Series 200 Technical Data HAMMARLUND Service Page Archived from the original on 30 May 2014 Retrieved 16 April 2007 Rovero s SP 200 Series History Communications Receivers The Vacuum Tube Era 1932 1981 4th ed Raymond S Moore http www dxing com rx sp400x htm DXing com SP 600General references editWar Department Technical Manual TM11 866 31 August 1943 Radio Receivers BC 779 B BC 794 B and BC 1004 C and Power Supply Units RA 74 C RA 84 B and RA 94 A Instruction Book for Super Pro Radio Receiver 100 400 kc and 2 5 20 Mc overprinted Radio Receiver BC 779 A and Power Supply Unit RA 84 A Undated Published by Authority of The Chief Signal Officer Order No 21109 Series 200 Super Pro by Hammarlund undated Communications Receivers The Vacuum Tube Era 1932 1981 3rd Edition by Raymond S MooreExternal links editThe incredible pre war Super Pro Western Historic Radio Museum Retrieved from https en wikipedia org w index php title Hammarlund Super Pro amp oldid 1148050991, wikipedia, wiki, book, books, library,

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