Wireless Telegraphy 1902
Written by Godfrey Dykes
© RN Communications Branch Museum/Library
| The contents of this file 1902/1 are listed below. |
| 1. Information of the general working of W/T apparatus (coherers), (jiggers - part of a tuning circuit transformer - see page 104 in this file Click Here to see the primary and secondary of a jigger feeding a coherer direct from an aerial input: jigger's are used with all spark equipments including transmitters), (cowtails - the ends of the aerial cable either at the aerial or in the office, (accumulators - collecting and storing electricity: batteries). 2. New Service sets - 63 sets have been issued of the Marconi Type. 3. Appropriation of W/T apparatus November 1902 (two pages separated by 'insulators'). 4. Insulators for Wire Aerials. 5. Alterations & Improvement "A new type of Coil" - Spark Gap coil. 6. Information on Shore Stations. 7. Notice in this file that HMS Collingwood is a Coastguard Ship. Also that HMS Hood was fitted with W/T kit from Marconi and not the RN kit (HMS Vernon). Of significance, the Hood was sunk in one of the entrances to Portland Harbour to stop Germans U-Boats and E-Boats from gaining entry. |
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| The contents of this file 1902/2 are listed below. |
| 1. W/T Instruments under trial. 2. Magnetic decoder - better than a coherer ? 3. Popoff - Ducretet apparatus - not a success. 4. Motor transformer - trying to improve the spark gap transmitter. 5. High resistance shunt for coherer - not approved ! 6. W/T Kites - go fly your kite and succeed ! 7. Wire aerials - is the system cracking up ? 8. Accumulators - a break through with batteries. 9. Potentiometers - coherer improvements again. 10. Lodge-Muirhead System of W/T - an improvement on the coherer and the navy is interested in knowing more! 11. Progress in Syntonic Telegraphy - Captain Jackson's system. |