Old Soldier
1st Lieutenant
- Joined
- Feb 15, 2022
- Location
- Yorkshire
U.S. Military Telegraph Corps was formed in 1861 with five employees of the Pennsylvania Railroad Company, but operators of the corps were not classed as serving soldiers, hence the lack of uniforms in the photo. There was also a US Military Telegraph Construction Corps who laid and strung the wiresFYI: The Telegraph was powered by wet cell batteries.
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This is a ten volt wet cell battery. It amounts to the one we put in smoke detectors. The sulfuric acid was in large glass jars. Special built sprung wagons carried the scary liquid.
For long distance, the batteries were wired together.
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The Beardslee Repeating Telegraph / Field Telegraph never needed a battery. It was powered by a magneto. Range, depending on a host of variables, was 5 to 8 miles.
Beardslee's were deployed with miles of wire & poles. A series of Beardslee stations were critical in the A of the Cumberland's switch from the left to center on June 23, 1863.
The reason for the short range was the resistance of the wire used - bare copper wire - and the rather low power of the batteries. These were Daniell cells which are primary batteries and were not rechargable. They would also need a supply of acid, water and copper sulphate cyrstals as well as the zinc and copper electrodes. To give some idea of range, 20 miles needed about 100v. Each 'battery' of 10 cells produced 10v = 2 miles. Connected in series, it would need 4 batteries, at least. It would be relayed through fixed stations with more batteries to produce the necessary voltage.
The Telegraph Corps were the equivalent of a modern Signal Corps - communications to and from higher level formations and commanders. The Signal Corps at the time of the Civil War operated the tactical communications and occasionally the operational comms in the field - the modern Signal Regiment.
The Beardslees were the equivalent of field telephones. They still needed a hard wire connection, but used insulated wire. The principal advantages of the Beardslees were that it could be operate without batteries and by men without knowledge of Morse code. Their power came from magnetos - mechanical electrical source - hand cranked. Disadvantages were short range, higher error rate and limited range.
1860-1865 SIGNAL CORPS. HISTORICAL OVERVIEW ~ Part II
(Part II) Flags, Lanterns, Rockets and Wires: A number of other visual communication techniques were also tried and used during the Civil War. Lieutenant Colonel Iain Standen British Army, Royal Corps of Signals
www.civilwarsignals.org