copyright North Somerset Museum 2003
This material is scanned from the papers held by the museum with their permission and, as such, is their copyright.
There is a technical notebook, belonging to Mr Mulholland in the archive with a range of photographs, notes and diagrams. The cable blueprint also comes from this. A sample of some of the more technical entries is shown here.
Local correction notes. These describe how the signal, reduced to a series of pulses by capacitative coupling is restored to the original keying signal. (At least that's how I read it.)
|A sample from the notebook recording some measurements taken in 1928