GB153690A - Improvements in or relating to wireless reception apparatus - Google Patents
Improvements in or relating to wireless reception apparatusInfo
- Publication number
- GB153690A GB153690A GB2028819A GB2028819A GB153690A GB 153690 A GB153690 A GB 153690A GB 2028819 A GB2028819 A GB 2028819A GB 2028819 A GB2028819 A GB 2028819A GB 153690 A GB153690 A GB 153690A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- circuit
- grid
- plate
- resistance
- 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
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Selective Calling Equipment (AREA)
Abstract
153,690. Robinson, J., Macrorie, A. K., Grenfell, G. P., and Airey, H. Morris-. Aug. 18, 1919. Wireless signalling; bearings, determining wirelessly.-The intensity of the received waves is caused to control the pitch of the note heard in the telephone. For this purpose, an oscillating thermionic valve is employed, the oscillations generated having a group-frequency which is audible in a telephone in the plate circuit, and the incoming energy is utilized to vary the grid-leak resistance of this valve, thereby varying the pitch of the note. The apparatus is particularly applicable to direction-finding systems. In the arrangement shown in Fig. 2, the oscillating valve 3 has the inductance 4 of its plate circuit coupled to the inductance 5 of the grid circuit. A condenser 6 in the grid circuit is shunted by a leak resistance constituted by the plate-filament path of a valve 8, and the value of this resistance is varied by applying the incoming energy to the grid of the valve 8. The high or low frequency receiving-circuit 13, 14 is coupled to the grid circuit of a valve rectifier 17, the plate circuit of which is connected across a high resistance 16 to the grid circuit of the valve 8. The rectifier 17 may be omitted and the circuit 13, 14 connected inductively to the grid circuit of the valve 8. A source of current may, or may not, be placed in the plate circuit of the valve 3.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2028819A GB153690A (en) | 1919-08-18 | 1919-08-18 | Improvements in or relating to wireless reception apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2028819A GB153690A (en) | 1919-08-18 | 1919-08-18 | Improvements in or relating to wireless reception apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
GB153690A true GB153690A (en) | 1920-11-18 |
Family
ID=10143491
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2028819A Expired GB153690A (en) | 1919-08-18 | 1919-08-18 | Improvements in or relating to wireless reception apparatus |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB153690A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2519419A (en) * | 1945-08-01 | 1950-08-22 | Arthur A Varela | Pulse receiver |
US2920190A (en) * | 1955-10-17 | 1960-01-05 | Arf Products | Radio receiver having means to wobble local oscillator during tuning |
-
1919
- 1919-08-18 GB GB2028819A patent/GB153690A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2519419A (en) * | 1945-08-01 | 1950-08-22 | Arthur A Varela | Pulse receiver |
US2920190A (en) * | 1955-10-17 | 1960-01-05 | Arf Products | Radio receiver having means to wobble local oscillator during tuning |
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