All changes to tower
| Date | Change | Source |
|---|---|---|
| 11 Feb 2021 | 6: nominal added and key changed to B S | Richard Offen via Email |
| 16 Aug 2020 | 1-6: turning added | [James Hedgcock] via 00013948 |
| 1 Sep 2016 | 1-6: frameid added; frame info added | David Sloman via e-mail |
| 25 Apr 2010 | I/B(newer): date,founder amended | David Sloman via e-mail |
| 24 Apr 2010 | Dis: both 'bells' are in fact retained I/Bs | David Sloman via e-mail |