GB315671A - Improvements in secret telegraphy - Google Patents
Improvements in secret telegraphyInfo
- Publication number
- GB315671A GB315671A GB21779/29A GB2177929A GB315671A GB 315671 A GB315671 A GB 315671A GB 21779/29 A GB21779/29 A GB 21779/29A GB 2177929 A GB2177929 A GB 2177929A GB 315671 A GB315671 A GB 315671A
- Authority
- GB
- United Kingdom
- Prior art keywords
- subdivided
- secrecy
- frequency band
- arrangements
- secret
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 230000005540 biological transmission Effects 0.000 abstract 2
- 230000000979 retarding effect Effects 0.000 abstract 1
- 239000011800 void material Substances 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
- H04K1/00—Secret communication
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE315671X | 1928-07-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB315671A true GB315671A (en) | 1930-05-29 |
Family
ID=6150251
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB21779/29A Expired GB315671A (en) | 1928-07-14 | 1929-07-15 | Improvements in secret telegraphy |
Country Status (3)
Country | Link |
---|---|
FR (1) | FR678378A (enrdf_load_stackoverflow) |
GB (1) | GB315671A (enrdf_load_stackoverflow) |
NL (1) | NL25801C (enrdf_load_stackoverflow) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3157874A (en) * | 1959-06-22 | 1964-11-17 | Thompson Ramo Wooldridge Inc | Signalling systems |
-
0
- NL NL25801D patent/NL25801C/xx active
-
1929
- 1929-07-12 FR FR678378D patent/FR678378A/fr not_active Expired
- 1929-07-15 GB GB21779/29A patent/GB315671A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3157874A (en) * | 1959-06-22 | 1964-11-17 | Thompson Ramo Wooldridge Inc | Signalling systems |
Also Published As
Publication number | Publication date |
---|---|
NL25801C (enrdf_load_stackoverflow) | |
FR678378A (fr) | 1930-03-21 |
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