Kleinschmidt Installation in Wire Room, NPG
“Booth C, used mostly on NPL and NPC circuits.”
“Receiving booth #6. SE143 receiver, detector box, 2-stage AF amplifier.”
“Telegraphone receiver for copying NPO or NPM at high speed. Parts to load for VLF arcs. Signals fed to Poulsen recorders.”
NPG Telegraphone Amplifiers, Control Circuits, & Transcribing Amplifier with Tone Trap
Telegraphone Wire Ready for Soldering
Method of Filing Down Splice of Telegraphone Wire
Close Up of Tone Trap, Telegraphone Installation
“Shortwave transmitter installed at a very early date.”
NPG Power House, Main Distributing Board, and Shortwave Set?
NPG Power House
Further information about some of these photos can be found on page 10 of in Sparks Journal Vol 1 No 4, which you can get by clicking here.