All changes to tower
| Date | Change | Source |
|---|---|---|
| 17 Aug 2022 | Fr1: layout added | Ranald Clouston papers 1957 |
| 22 Mar 2022 | URL amended | Error detected during Xenu Link Sleuth checks. Alternative URL determined by TCJ via Tim Jackson |
| 8 May 2017 | all: canons,turning,frameid added; 1-5: wt,nominal,diam added; | Philip Denton via 00012137 |
| frame info added | Philip Denton via 00012137 | |
| 11 Feb 2008 | Tenor note added; nominal: B+42c | Nick Bowden (info SGR website) via pNBR |