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2. National HRO - Wikipedia

   en.wikipedia.org/wiki/National_HRO

   Some of National Radio's tool makers marked their overtime slips with HOR for "Hell Of a Rush." Management decided that a version of that abbreviation should be the name of the new receiver, choosing the slight alteration HRO to make it less objectionable. [2] [3] That was quickly countered by saying that HRO stood for "Helluva Rush Order". [4]

3. National Radio Company - Wikipedia

   en.wikipedia.org/wiki/National_Radio_Company

   National HRO receiver, circa 1938 Logo of National Company, late 1940s. In 1935 National introduced their top-of-the-line HRO receiver. This radio included two RF stages and a crystal filter. The distinctive dial allowed kc (kHz) resettability and was a National trademark into the 1960s.

4. List of communications receivers - Wikipedia

   en.wikipedia.org/wiki/List_of_communications...

   HRO Senior Professional ~1936 1.7-30 superhet 15 6 [28] National HRO 500 .005-30 5 band AM SSB 0.5 2.5 5 8 10 16.5 x 7.675 x 12.75 inch 10 3 1 [54] NRP PAN-1000 Dutch Government 1983-1987 .1-1000 modular triple conversion 6 front-ends AM, N-FM, LSB, USB CW, W-FM 2.4 6 12 100 6 10 4 +5 [55] Plessey: PR152 1962 .55-30 double superhet CW AM 7 9 0 1

5. MFJ Enterprises - Wikipedia

   en.wikipedia.org/wiki/MFJ_Enterprises

   MFJ Enterprises was an American manufacturer specializing in a wide range of products for the amateur radio market. The company focuses on station accessories, including antenna tuners and antenna switching equipment. MFJ was founded in 1972 by Martin F. Jue. As of 2014, the company was recognized as the largest producer of amateur radio ...

6. Hammarlund Super Pro - Wikipedia

   en.wikipedia.org/wiki/Hammarlund_Super_Pro

   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 ...

7. List of amateur radio transceivers - Wikipedia

   en.wikipedia.org/wiki/List_of_amateur_radio...

   [24] [25] [26] Introduced in the year 2000, the radio was known for its "all-in-one" functionality. It can transmit on all amateur radio bands between 160 meters and 70 centimeters, with the exception of the 1.25 meters band, and the "X" model also has built-in 23 centimeters band capability option. Kenwood discontinued production of the TS ...