[D8966ADW], Test Report, Edison Phonoplex System, William S Logue, November 30th, 1889
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Title
[D8966ADW], Test Report, Edison Phonoplex System, William S Logue, November 30th, 1889
Editor's Notes
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
Mentioned
Date
1889-11-30
Type
Folder/Volume ID
D8966-F
Microfilm ID
128:340
Document ID
D8966ADW
Publisher
Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University