Difference between revisions of "British Wireless Systems"
(→See Also) |
|||
| Line 33: | Line 33: | ||
==See Also== | ==See Also== | ||
* [[British Adoption of Radio Communication]] | * [[British Adoption of Radio Communication]] | ||
| + | * [[German Wireless Systems]] | ||
| + | * [[Italian Wireless Systems]] | ||
==Footnotes== | ==Footnotes== | ||
Revision as of 12:40, 2 May 2012
The Royal Navy started using wireless telegraphy in a network of land- and ship-based installations starting around 1900. Their hardware evolved rapidly along a number of lines.
Contents
Tunes
The earliest sets in 1902 had a fixed single frequency. A second was introduced in 1903 which was dubbed "B" as the first was named "A".
By 1907, the following set of "tunes" was being supported variously by different hardware and doctrine of use:[1]
- "A" (perhaps disused?)
- "B" (perhaps disused?)
- "D", 700 feet
- "Q"
- "R" 2,500 feet
- "S", 3,300 feet
- "T", 4,200 feet
- "U", 5,000 feet
Service Gear Mark I
Developed by Captain H. B. Jackson, these early systems were functional but generally regarded as inferior to contemporary systems crafted by Marconi. They were known as "Jackson" equipment before the advent of Service Gear Mark II.
Soon after 1907, improvements allowed these to transmit between 700 and 6,500 feet wavelength, though 1,000 was generally the bottom end used, as the "D" tune at 700 feet required switching in additional condensers by one of two methods. The sets could transmit "Q", "R", "S", "T" and "U" tunes.[2]
Marconi Gear
Signor Marconi's equipment was developed in a collegial competition alongside the early Jackson gear. When the two systems did not prove identical, the Marconi systems almost always proved superior.
Service Gear Mark II
By 1901, the early Jackson gear was refined in Vernon into a "Wireless Telegraphy Apparatus, Mark II" thought to be more nearly equal to the Marconi design. Fifty-two such sets were ordered, and known by their serial numbers.[3]
C Tune Sets
There is mention in ARTS 1907 of "C Tune Sets", which may have shared some common traits with Service Mark II sets and which may not have referred to a frequency.[4]
Destroyer Sets of 1907
These generally could transmit on "D" (700 feet) and monitor "D" and other wavelengths up to 6,500 feet (through "U", at least).
See Also
Footnotes
- ↑ Annual Report of the Torpedo School, 1907, Wireless Appendix pp. 34-41, 44.
- ↑ Annual Report of the Torpedo School, 1907, Wireless Appendix pp. 36-7, 57-8.
- ↑ Annual Report of the Torpedo School, 1901, pp. 105-6.
- ↑ Annual Report of the Torpedo School, 1907, Wireless Appendix pp. 41-42.
Bibliography
