All changes to tower
| Date | Change | Source |
|---|---|---|
| 31 May 2016 | 1,5: frameid amended; fr2 info added | David Sloman via e-mail |
| 11 Jul 2014 | 1-8: frame id added; frame info added | John Baldwin via database |
| 5 Nov 2009 | Resurgence of interest has led to a Wed PN now being held | Neil Bennett via e-mail |