TRANSMITTERS & TRANSCEIVERS

Type 20 Series Transmitters

IMAGES, PHOTOS, DOCUMENTS, SCHEMATICS ETC.

Photographs, Schematics, Documents

NOTES.

1. TECHNICAL DETAILS OF THE 20's SERIES - All of these sets were Valved, i.e., NOT Spark or Arc Transmitters. Thus {like ARC's} they transmitted CONTINUOUS WAVE signals. However, continuous waves of this period differed greatly from the definition used today as file shows Continuous Wave.

2. The drawings and plans for the 20's series installation are enormous and impossible to handle for this medium: they measure 4 foot by 2 foot, so under Photographs, Schematics, Documents is a link to a couple of corner labels and the front cover of the Type 25 to view.