17 November 2018
- 08:4308:43, 17 November 2018 diff hist +30 N File:Tek 180A-rear-No-Filt.jpg Tek 180A Rear - w/o Air Filter current
- 08:4208:42, 17 November 2018 diff hist +22 N File:Tek 180A-Top.jpg Tek 180A Top w/o Cover current
16 November 2018
- 21:2221:22, 16 November 2018 diff hist +46 m 180 No edit summary
- 21:2121:21, 16 November 2018 diff hist +25 N File:Tek 180A-Internal-1.jpg Tek 180A Internal - Tubes current
2 October 2018
- 22:0622:06, 2 October 2018 diff hist +5 m 575 typo
- 22:0522:05, 2 October 2018 diff hist +901 575 Power Supply Details
- 22:0522:05, 2 October 2018 diff hist +9 6AN8 No edit summary
- 21:2921:29, 2 October 2018 diff hist +53 6CG7 Added Tube Picture
- 21:2721:27, 2 October 2018 diff hist +9 N File:Tube 6CG7-1.jpg 6CG7 Tube current
30 September 2018
- 19:4619:46, 30 September 2018 diff hist +57 m 575 No edit summary
- 19:4619:46, 30 September 2018 diff hist +19 N File:Tek 575 NPN-hfe Curve.jpg hFE curve of 2N3904 current
29 September 2018
- 19:1619:16, 29 September 2018 diff hist +111 m 575 Pics
- 19:1319:13, 29 September 2018 diff hist +42 N File:Tek 575 5651 VRCurve.jpg 5651 VR Tube in 575 - H=20v/div, V=1mA/div current
- 19:1219:12, 29 September 2018 diff hist +33 N File:Tek 575 PNPCurve 2N2207.jpg 2N2207 Germanium PNP Curve in 575 current
22 September 2018
- 23:4323:43, 22 September 2018 diff hist +45 m 575 No edit summary
- 23:4223:42, 22 September 2018 diff hist +27 N File:Tek 575 Live.jpg Internal view of a live 575 current
19 September 2018
- 23:4623:46, 19 September 2018 diff hist +28 m 575 No edit summary
- 23:4623:46, 19 September 2018 diff hist +20 N File:Tek 575 NPN.jpg NPN BJT Curve on 575 current
17 September 2018
- 10:5410:54, 17 September 2018 diff hist −5 m 575 No edit summary
16 September 2018
- 16:4616:46, 16 September 2018 diff hist +62 m 575 No edit summary
- 16:4516:45, 16 September 2018 diff hist +73 N File:Tek 575 Rear FanRmvd.jpg Rear View, Showing access to Rectifier Diode (Air filter and Fan Removed) current
- 16:4316:43, 16 September 2018 diff hist +8 m 575 No edit summary
- 16:4016:40, 16 September 2018 diff hist +52 m 575 No edit summary
- 16:3916:39, 16 September 2018 diff hist +34 N File:Tek 575 Top.jpg Top View (Top Support Bar Removed) current
- 15:2015:20, 16 September 2018 diff hist +97 m 575 Pics
- 15:1915:19, 16 September 2018 diff hist +19 N File:Tek 575 CRTConn.jpg 575 CRT Connections current
- 15:1715:17, 16 September 2018 diff hist +65 N File:Tek 575 Rectifier.jpg 575 Silicon Rectifier Diodes (Upgrade from selenium), Behind Fan current
- 12:3512:35, 16 September 2018 diff hist +96 m 575 Collector Sweep - Internal Pics
- 12:3412:34, 16 September 2018 diff hist +67 N File:Tek 575 CollectorSweep.jpg Collector Sweep- Germanium Rectifier and Dissipation Resistor Stack current
- 11:2711:27, 16 September 2018 diff hist 0 m T0520 No edit summary
- 11:2611:26, 16 September 2018 diff hist +58 575 No edit summary
- 11:2111:21, 16 September 2018 diff hist +217 T0520 Pictures of T0520 Tube off a 575
- 11:1911:19, 16 September 2018 diff hist +14 N File:Tube 154-0343-00-DefPlates.jpg T0520 Gun Assy current
- 11:1811:18, 16 September 2018 diff hist +20 N File:Tube 154-0343-00-ElectronGun.jpg T0520 CRT Def Plates current
- 11:1511:15, 16 September 2018 diff hist +19 N File:Tube 154-0343-00-2.jpg T520 From a 575 current
- 11:1211:12, 16 September 2018 diff hist +50 m 575 CRT Pics
- 11:0911:09, 16 September 2018 diff hist +10 N File:Tube 154-0343-00.jpg CRT of 575 current
14 September 2018
- 19:4019:40, 14 September 2018 diff hist +38 m 575 No edit summary
- 19:4019:40, 14 September 2018 diff hist +15 N File:Tek 575 NoCRT.jpg 575 without CRT current
- 19:3619:36, 14 September 2018 diff hist +73 m 575 Internal Pics
- 19:3519:35, 14 September 2018 diff hist +20 N File:Tek 575 Side.jpg Internals -Side View current
- 19:3319:33, 14 September 2018 diff hist +13 N File:Tek 575 Underside.jpg 575 Underside current
9 September 2018
- 11:5111:51, 9 September 2018 diff hist +52 m 6BQ7A Tube Pic
- 11:5011:50, 9 September 2018 diff hist +9 N File:Tube 6BQ7.jpg 6BQ7 Tube
- 11:4111:41, 9 September 2018 diff hist +60 m 12B4 Tube Pic
- 11:3811:38, 9 September 2018 diff hist +9 N File:Tube 12B4.jpg 12B4 Tube current
7 September 2018
- 15:1515:15, 7 September 2018 diff hist +1,022 575 Added Specs
- 14:5514:55, 7 September 2018 diff hist +119 m 575 Pics
- 14:5414:54, 7 September 2018 diff hist +13 N File:Tek 757 Cart.jpg 575 in a Cart current
- 14:5214:52, 7 September 2018 diff hist +11 N File:Tek 575 Chart.png 575 in Cart current