Title
Manuscript report on quadruplex telegraphy
Reference
UK0108 NAEST 020/157-174
Date
n.d.
Scope and Content
Manuscript copy of report on quadruplex telegraphy (author not identified). Appears to be based on 020/95-135, without diagrams. Gives definition of quadruplex telegraphy and describes proposed system. With inserted pages as follows: f 157B, diagram of Smith's adjustment of condenser; 170B, note on problem of battery short-circuiting; 170C, inserted paragraph on interruptions to working.
Physical description
Conserved, Pages/folios: 21
Language
English.
Persons keyword
Subject
Conditions governing access
Open
Level of description
file
