4 October 2020
- 12:2812:28, 4 October 2020 diff hist +690 561 Added a section about plugin compatibility amongst the four variants (561, 561A, 561B, 561S), as there was a very vague statement regarding plugin power consumption being the deciding factor. This is not the case.
3 October 2020
- 19:0819:08, 3 October 2020 diff hist +70 561 No edit summary
- 18:5018:50, 3 October 2020 diff hist 0 561 No edit summary
- 18:1318:13, 3 October 2020 diff hist +130 561 Added links to newly uploaded manual and field mod instructions.
- 18:1018:10, 3 October 2020 diff hist +106 561 No edit summary
- 18:0718:07, 3 October 2020 diff hist −6 561 No edit summary
- 18:0118:01, 3 October 2020 diff hist +266 561 No edit summary
- 17:4717:47, 3 October 2020 diff hist 0 N File:Tektronix561 NO040347FieldModification.pdf No edit summary current
- 17:4517:45, 3 October 2020 diff hist 0 N File:Tektronix561 NO040288FieldModification.pdf No edit summary current
- 17:4317:43, 3 October 2020 diff hist 0 N File:Tektronix561 NO040267FieldModification.pdf No edit summary current
- 17:4017:40, 3 October 2020 diff hist +62 N File:070-261.pdf Full service manual including field modification instructions.
22 April 2020
- 17:4817:48, 22 April 2020 diff hist +1 575 No edit summary
18 July 2019
- 07:5607:56, 18 July 2019 diff hist +340 User talk:Maurizio No edit summary current
17 July 2019
- 12:1912:19, 17 July 2019 diff hist +105 5A21N No edit summary
- 12:1512:15, 17 July 2019 diff hist +15 User:Maurizio No edit summary current
- 12:1512:15, 17 July 2019 diff hist +289 N User:Maurizio Created page with "Hello! I am the owner of a small repair company in Toronto, Canada. I work with lots of audio equipment, and have had experience in designing PCBs and analog circuits. I own m..."
- 12:1112:11, 17 July 2019 diff hist +168 Template talk:MissingSpecs No edit summary
- 12:0612:06, 17 July 2019 diff hist +16 N File:5A21N TopClose1.jpg Rear, left side. current
- 12:0512:05, 17 July 2019 diff hist +10 N File:5A21N Top.jpeg Left side. current
- 12:0412:04, 17 July 2019 diff hist +11 N File:5A21N Bot.jpg Right side. current
- 12:0412:04, 17 July 2019 diff hist +29 N File:5A21N BotClose.jpg Bottom side, front of plugin. current
- 12:0312:03, 17 July 2019 diff hist +28 N File:5A21N TopClose2.jpg Inputs and input protection. current
- 12:0112:01, 17 July 2019 diff hist +43 N File:5A21N Front.jpeg Front Panel of 5A21N with clear knob skirt. current
- 11:4511:45, 17 July 2019 diff hist +283 67 No edit summary
- 11:4211:42, 17 July 2019 diff hist +326 67 No edit summary
- 11:4111:41, 17 July 2019 diff hist +34 Template:BeginSpecs No edit summary
- 11:3111:31, 17 July 2019 diff hist −18 67 No edit summary
- 11:2311:23, 17 July 2019 diff hist −19 Template:BeginSpecs →Specifications
- 11:1911:19, 17 July 2019 diff hist −15 Template:BeginSpecs →Specifications
- 10:5610:56, 17 July 2019 diff hist −25 Template:MissingSpecs →Specifications
- 10:4610:46, 17 July 2019 diff hist −41 Template:MissingSpecs →Specifications
- 10:3510:35, 17 July 2019 diff hist +250 Template:MissingSpecs →Specifications
- 10:2310:23, 17 July 2019 diff hist +267 67 →Pictures
- 10:1610:16, 17 July 2019 diff hist +130 561 →561
- 10:1210:12, 17 July 2019 diff hist +231 561 →561
- 09:5909:59, 17 July 2019 diff hist +476 561 →Pictures of 561
- 09:4609:46, 17 July 2019 diff hist +4 561 →561
- 09:4609:46, 17 July 2019 diff hist +220 561 →561
- 09:4009:40, 17 July 2019 diff hist +24 N File:Type67 Top.jpg Top side of the Type 67. current
- 09:3709:37, 17 July 2019 diff hist +30 N File:Type67 Bot.jpeg Component side of the Type 67. current
- 09:3509:35, 17 July 2019 diff hist +38 N File:Type67 Mod104Number.jpg Serial number and modification number. current
- 09:3409:34, 17 July 2019 diff hist +28 N File:Type67 Mod104 1.jpg Closeup of the modification. current
- 09:3109:31, 17 July 2019 diff hist +28 N File:Type67 Mod104 2.jpg Closeup of the modification. current
- 09:3009:30, 17 July 2019 diff hist +42 N File:Type67Mod104 Front.jpeg A type 67 time base plugin with 'Mod 104'. current
- 09:2809:28, 17 July 2019 diff hist +84 N File:561 Back.jpeg Back of the 561 indicator unit. Note the power transistor fo the low voltage supply. current
- 09:2709:27, 17 July 2019 diff hist +32 N File:561 FrontControls.jpeg Front panel controls of the 561. current
- 09:2509:25, 17 July 2019 diff hist +19 N File:561 HVCover.jpg High voltage cover. current
- 09:2409:24, 17 July 2019 diff hist +41 N File:561 LeftClose.jpg Power supply tubes and filter capacitors. current
- 09:2209:22, 17 July 2019 diff hist +26 N File:561 CRTSocket.jpg Closeup of the CRT socket. current
- 09:2109:21, 17 July 2019 diff hist +61 N File:561 BayConnector.jpg Closeup of the back of the plugin connector in the right bay. current