All public logs
Combined display of all available logs of GRWiki. You can narrow down the view by selecting a log type, the username (case-sensitive), or the affected page (also case-sensitive).
- 16:47, 20 October 2024 Peter talk contribs created page File:Numerik display interior.png ("Numerik" display, internal view. Courtesy of http://lampes-et-tubes.info/cd/cd114.php?l=e)
- 16:47, 20 October 2024 Peter talk contribs uploaded File:Numerik display interior.png ("Numerik" display, internal view. Courtesy of http://lampes-et-tubes.info/cd/cd114.php?l=e)
- 15:12, 18 October 2024 Peter talk contribs created page Numerik (Created page with "'''Numerik''' displays use ten small incandescent lamps and curved plastic plates do display the digits 0 to 9. ==Links== * IND-0300 * IND-1801 * Experimenter August 1964 describing Numerik Display * GB Patent 847,972 filed 22 Jan 1958 * [https://www.industrialalchemy.org/articleview.php?item=1093 KGM Electronics IND-1803 Numerik Indicator (General Radio)] @ industrialalchemy.org")
- 21:03, 3 August 2024 User account Matt talk contribs was created by Peter talk contribs (User request)
- 05:02, 3 August 2024 Peter talk contribs created page 505-Q (Created page with "{{GR Product |model=505-Q |codes=CONDENJACK |class=capacitance standards |summary=50nF, 1% standard capacitor |image=Photo Needed.jpg |caption=Genrad 505-Q |series=505 |introduced=1934 |discontinued=1934 |designers= |manuals= {{Catalog History}} }} The {{Title|General Radio 505-Q}} is a 50 nF, 1% standard capacitor that only appeared in {{Catalog G2}}. After that, the large-case 505-R was GR's 50 nF offering in the 505 series. See the overview page 505 for the...")
- 20:18, 25 July 2024 Peter talk contribs created page Donald B. Sinclair (Created page with "{{Person |Names=Donald Bellamy Sinclair |Birth date=1910-05-23 |Birth place=Winnipeg, Man., Canada. |Death date=1985-08-24 |Death place= |Countries=Canada, US |Affiliations=University of Manitoba, MIT, New York Telephone Company, Bell Telephone Laboratories, Western Electric, General Radio |Wikidata id=Q22018784 }} joined General Radio as an engineer in July 1936. He held numerous engineering and management positions, including those of chief engineer (1950 to 1960) and...")
- 20:07, 25 July 2024 Peter talk contribs created page Arnold P. G. Peterson (Created page with "{{Person |Names=Arnold P. G. Peterson |Birth date=1914-08-07 |Birth place=DeKalb, IL, US |Death date= |Death place= |Countries= |Affiliations=University of Toledo; MIT; General Radio |Wikidata id= }} ''please add biography'' [https://www.worldradiohistory.com/Archive-IRE/60s/IRE-Directory-1960-Members.pdf IRE Directory 1960]: :PETERSON, Arnold P. G. (S'34-A'38-SM'46-F'58), Engineer, General Radio Company, 22 Baker Ave., West Concord, Mass. :Born: August 7, 1914, DeKal...")
- 20:11, 9 July 2024 Peter talk contribs created page File:GR-874-B-1.jpg
- 20:11, 9 July 2024 Peter talk contribs uploaded File:GR-874-B-1.jpg
- 20:08, 9 July 2024 Peter talk contribs created page File:GR 874-B cutaway.jpg
- 20:08, 9 July 2024 Peter talk contribs uploaded File:GR 874-B cutaway.jpg
- 20:05, 9 July 2024 Peter talk contribs created page File:874-B Basic Connector 1.jpg
- 20:05, 9 July 2024 Peter talk contribs uploaded File:874-B Basic Connector 1.jpg
- 20:02, 9 July 2024 Peter talk contribs moved page File:GR 874-G Operating Instructions.pdf to File:GR 874-G Attenuator 874-0212-D 07 1963.pdf without leaving a redirect
- 19:59, 9 July 2024 Peter talk contribs created page Template:GR 874-G (Created page with "* 874-G3 / 874-G3L – 3 dB non-locking / locking versions * 874-G6 / 874-G6L – 6 dB non-locking / locking versions * 874-G10 / 874-G10L – 10 dB non-locking / locking versions * 874-G14 / 874-G14L – 14 dB non-locking / locking versions * 874-G20 / 874-G20L – 20 dB non-locking / locking versions * GR 874-G Operating Instructions")
- 19:58, 9 July 2024 Peter talk contribs created page File:GR 874-G Operating Instructions.pdf
- 19:58, 9 July 2024 Peter talk contribs uploaded File:GR 874-G Operating Instructions.pdf
- 20:34, 28 May 2024 Peter talk contribs created page Butterfly circuit (Created page with "In the words of the patent application, <blockquote> The principal object of the present invention is to provide ultra-high-frequency tuning apparatus which is readily tunable over a wide frequency range, and which avoids the difficulties of erratic operation encountered in some existing resonant circuit controls. </blockquote> The arrangement consist of a butterfly-type capacitor (two sets of stator plates with a butterfly-shaped rotor that needs no electrical connect...")
- 18:35, 24 May 2024 Peter talk contribs created page 774 (Created page with "{{Title|General Radio 774 series connectors}} were coaxial connectors used on many GR instruments from their introduction in 1941 until they were was supplanted by the Type 874 in 1948. The 774 was a constant-impedance connector was used for generator and detector connections of two of the first instruments using it - the Type 821-A Twin-T Impedance Measuring Circuit, and the Type 916-A Radio-Frequency Bridge. ''to be expanded'' ==GR-77...")
- 21:37, 17 May 2024 Peter talk contribs created page File:Gr 1124 cards2.jpg
- 21:37, 17 May 2024 Peter talk contribs uploaded File:Gr 1124 cards2.jpg
- 21:36, 17 May 2024 Peter talk contribs created page File:General Radio 1124-0100-A Jan 1969.pdf
- 21:36, 17 May 2024 Peter talk contribs uploaded File:General Radio 1124-0100-A Jan 1969.pdf
- 21:29, 17 May 2024 Peter talk contribs created page File:Gr 1125 5MHz rear.jpg
- 21:29, 17 May 2024 Peter talk contribs uploaded File:Gr 1125 5MHz rear.jpg
- 21:29, 17 May 2024 Peter talk contribs created page File:Gr 1124 right.jpg
- 21:29, 17 May 2024 Peter talk contribs uploaded File:Gr 1124 right.jpg
- 21:29, 17 May 2024 Peter talk contribs created page File:Gr 1124 rear.jpg
- 21:29, 17 May 2024 Peter talk contribs uploaded File:Gr 1124 rear.jpg
- 21:29, 17 May 2024 Peter talk contribs created page File:Gr 1124 output amp.jpg
- 21:29, 17 May 2024 Peter talk contribs uploaded File:Gr 1124 output amp.jpg
- 21:29, 17 May 2024 Peter talk contribs created page File:Gr 1124 left.jpg
- 21:29, 17 May 2024 Peter talk contribs uploaded File:Gr 1124 left.jpg
- 21:29, 17 May 2024 Peter talk contribs created page File:Gr 1124 5MHz 2.jpg
- 21:29, 17 May 2024 Peter talk contribs uploaded File:Gr 1124 5MHz 2.jpg
- 21:28, 17 May 2024 Peter talk contribs created page File:Gr 1124 5MHz 1.jpg
- 21:28, 17 May 2024 Peter talk contribs uploaded File:Gr 1124 5MHz 1.jpg
- 21:28, 17 May 2024 Peter talk contribs created page File:GenRad 1124 manual RM564 mod rear.png
- 21:28, 17 May 2024 Peter talk contribs uploaded File:GenRad 1124 manual RM564 mod rear.png
- 21:28, 17 May 2024 Peter talk contribs created page File:Gr 1124 front2.jpg
- 21:28, 17 May 2024 Peter talk contribs uploaded File:Gr 1124 front2.jpg
- 22:45, 14 May 2024 Peter talk contribs created page File:GR-509-G-3.jpg
- 22:45, 14 May 2024 Peter talk contribs uploaded File:GR-509-G-3.jpg
- 22:45, 14 May 2024 Peter talk contribs created page File:GR-509-G-2.jpg
- 22:45, 14 May 2024 Peter talk contribs uploaded File:GR-509-G-2.jpg
- 22:44, 14 May 2024 Peter talk contribs created page File:GR-509-G-1.jpg
- 22:44, 14 May 2024 Peter talk contribs uploaded File:GR-509-G-1.jpg
- 04:35, 8 May 2024 Peter talk contribs created page Category:Pages with broken file links (Created page with "Category:GRWiki")
- 18:13, 4 May 2024 Peter talk contribs created page Template:1422 Series (Created page with "* 1422-D * 1422-MD * 1422-ME * 1422-N * 1422-CB * 1422-CC * 1422-CD")
- 17:54, 4 May 2024 Peter talk contribs created page Template:722 Series (Created page with "* 722-D * 722-N * 722-NQ")
