All changes to tower
| Date | Change | Source |
|---|---|---|
| 13 Oct 2011 | 3: historically important | David Knight via e-mail |
| 11 Mar 2008 | Absence of electricity noted | Tim Jackson#130 (info Neil Skelton) via e-mail |
| 11 Feb 2008 | Tenor note added; nominal A+47c | Matthew Higby via pNBR |
| 10 Feb 2008 | URL added | Tim Jackson#128 via e-mail |