GB422468A - Improvements in and relating to wireless signalling - Google Patents
Improvements in and relating to wireless signallingInfo
- Publication number
- GB422468A GB422468A GB1659933A GB1659933A GB422468A GB 422468 A GB422468 A GB 422468A GB 1659933 A GB1659933 A GB 1659933A GB 1659933 A GB1659933 A GB 1659933A GB 422468 A GB422468 A GB 422468A
- Authority
- GB
- United Kingdom
- Prior art keywords
- echoes
- receiver
- pulses
- energy
- duration
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/005—Control of transmission; Equalising
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Electronic Switches (AREA)
Abstract
422,468. Wireless signalling. BELL, L. H. BAINBRIDGE-, and NAISMITH, R., Radio Research Station, Slough, Buckinghamshire. June 9, 1933, Nos. 16599/33 and 15967 /34. Drawings to Specification. [Class 40 (v)] The effects of fading are limited by causing a transmitter to send out at intervals, pulses of energy, the duration of the pulses and the duration of the intervals being determined by the lengths of the several paths over which the energy travels to the receiver, and by combining at the receiver the energy received over the several paths. The receiver has its alternating current circuits arranged to recover from one echo before the next arrives and the output after rectification is applied to a condensershunted resistance which circuit is of sufficiently long time-constant to integrate the ground-ray signal and all the echoes from a particular pulse or a plurality of pulses and their echoes to provide a single element constituting the smallest unit of the signalling system used. An interrupter may be added to the receiver whose rate of operation corresponds to the rate of reception of the echoes and connects the integrating circuit only during the reception of each pulse and its echoes.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1659933A GB422468A (en) | 1933-06-09 | 1933-06-09 | Improvements in and relating to wireless signalling |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1659933A GB422468A (en) | 1933-06-09 | 1933-06-09 | Improvements in and relating to wireless signalling |
Publications (1)
Publication Number | Publication Date |
---|---|
GB422468A true GB422468A (en) | 1935-01-09 |
Family
ID=10080226
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1659933A Expired GB422468A (en) | 1933-06-09 | 1933-06-09 | Improvements in and relating to wireless signalling |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB422468A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2419193A (en) * | 1942-12-09 | 1947-04-22 | Gen Electric | Communication system |
FR2404233A1 (en) * | 1977-09-21 | 1979-04-20 | Siemens Ag | PROCESS FOR THE TRANSMISSION OF DATA BETWEEN A CENTRAL AND SEVERAL SUBSTATIONS |
-
1933
- 1933-06-09 GB GB1659933A patent/GB422468A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2419193A (en) * | 1942-12-09 | 1947-04-22 | Gen Electric | Communication system |
FR2404233A1 (en) * | 1977-09-21 | 1979-04-20 | Siemens Ag | PROCESS FOR THE TRANSMISSION OF DATA BETWEEN A CENTRAL AND SEVERAL SUBSTATIONS |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB615663A (en) | Arrangements for recording time interval between pulses | |
GB422468A (en) | Improvements in and relating to wireless signalling | |
US2652451A (en) | Overcoming elongation of pulses | |
GB651453A (en) | Improvements in signalling system and apparatus | |
GB1109444A (en) | Improvements relating to interrogating apparatus for determining the optimum frequency for radio communication | |
GB709901A (en) | Regenerative repeater for telegraph signals | |
US2509829A (en) | Duplex telegraph system | |
US2429632A (en) | Printing telegraph system utilizing variably spaced impulses | |
CH272719A (en) | Crossover network through which a transmitter and a receiver are connected to a common antenna. | |
SU114693A1 (en) | Radio communication method with increased noise immunity | |
US2445809A (en) | Timing device for telegraph circuit | |
GB520606A (en) | Improvements in or relating to radio direction finders | |
SU365851A1 (en) | DEVICE FOR TRANSFER OF INFORMATION FROM MARKER TO REGISTER IN AUTOMATIC TELEPHONE | |
GB585827A (en) | Improvements in or relating to the demodulation of time-modulated electrical pulses | |
JPS55130244A (en) | Radio communication unit | |
SU150129A1 (en) | Receiving and transmitting unit for a shift-quality code | |
JPS5242302A (en) | Inter-call system | |
GB612398A (en) | Improvements in or relating to radio telecontrol systems | |
GB1062207A (en) | Teleprinter line circuit | |
GB692456A (en) | Improvements in or relating to start-stop telegraph repeaters | |
JPS5690657A (en) | Wire transmission system | |
GB1262424A (en) | Remote control of receivers | |
GB342370A (en) | Improvements in or relating to printing telegraphy | |
GB655542A (en) | System for receiving messages transmitted electrically | |
GB545399A (en) | Devices for operating or transmitting code signals |