[D8966ADW], Test Report, Edison Phonoplex System, William S Logue, November 30th, 1889

Item

Abstract

Tests made on November 30th 1889 between Harrisburg and Jersey 199/2 miles iron wire 4 condensers.##6 cells chrome acid##Old Coil##Nov 3 wire coil very low##Core No 1. '' ''##2 '' ''##3 '' ''##4 '' ''##Loose iron wire Very little better##New Signal wound coil##Core 1. Slightly better##2 about '' ''##3 '' '' ''##4 '' '' ''##Loose iron wire much better##3 wire coil 8 Cells of chrome acid old coil no good core 1 Slightly better##2 Still '' ''##3 '' '' ''##4 Not quite so good soft iron, very clear but not quite so loud##Single wire oil 8 cells chromic##No 1 Little better##2 hear it 1 ft away##3 '' '' '' ''##4 Not quite so good soft iron core quite plain and hear it easily a foot away##Test made between Harrisburg and Pittsburgh Dec 1st 1889 198 miles iron 54 miles copper##8 cells chrome acid No 4 core & also soft iron loose Single wound coil##Hear us very plainly 6 inches from phone.##Wire trouble presented any tests today, previous tests (on file) demonstrated the above coil & cores give the best results

Date

1889-11-30

Decade

1880-1889

Identifier

D8966ADW

Folder Set

D8966

Title

[D8966ADW], Test Report, Edison Phonoplex System, William S Logue, November 30th, 1889

Microfilm ID

128:340

Publisher

Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University