GB477048A - Improvements in or relating to wireless receiving apparatus - Google Patents
Improvements in or relating to wireless receiving apparatusInfo
- Publication number
- GB477048A GB477048A GB1762936A GB1762936A GB477048A GB 477048 A GB477048 A GB 477048A GB 1762936 A GB1762936 A GB 1762936A GB 1762936 A GB1762936 A GB 1762936A GB 477048 A GB477048 A GB 477048A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tuned
- intermediate frequency
- inductance
- impedance
- aerial
- 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
- H04B1/26—Circuits for superheterodyne receivers
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Circuits Of Receivers In General (AREA)
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
Abstract
477,048. Valve circuits for wireless reception; impedance networks. TRUEFITT, E. S. V. June 25, 1936, No. 17629. [Classes 40 (iii) and 40 (v)] For excluding undesired signals having the intermediate frequency from a superheterodyne frequency-changer valve 1, a band-pass filter comprises two circuits 2, 3, 7, 6 and 4, 5, 7, 6, which are tuned to the desired signal and are coupled by an impedance 6, 7 tuned to the intermediate frequency. The latter may be 465 kc./sec., so as to lie between the long and medium wave-bands, and a uniform response may be obtained by choosing the aerial inductance 8 so that an aerial of average capacity is tuned to the intermediate frequency. The gain-control voltage may be applied through conductor 9 to the midpoint of the coupling impedance 7, 6. Instead of the inductance 6, the mutual inductance between coils 2 and 4 may resonate with the condenser 7. Specification 401,316 is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1762936A GB477048A (en) | 1936-06-25 | 1936-06-25 | Improvements in or relating to wireless receiving apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1762936A GB477048A (en) | 1936-06-25 | 1936-06-25 | Improvements in or relating to wireless receiving apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB477048A true GB477048A (en) | 1937-12-21 |
Family
ID=10098471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1762936A Expired GB477048A (en) | 1936-06-25 | 1936-06-25 | Improvements in or relating to wireless receiving apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB477048A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2581159A (en) * | 1948-05-28 | 1952-01-01 | Rca Corp | Tunable band pass amplifier for television |
-
1936
- 1936-06-25 GB GB1762936A patent/GB477048A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2581159A (en) * | 1948-05-28 | 1952-01-01 | Rca Corp | Tunable band pass amplifier for television |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB514640A (en) | Image-suppression system for wireless receivers | |
| GB477048A (en) | Improvements in or relating to wireless receiving apparatus | |
| GB484404A (en) | Improvements in or relating to radio receivers | |
| US2540817A (en) | Band-pass coupling network | |
| GB548539A (en) | Wide-band coupling circuits | |
| GB501051A (en) | Improvements in or relating to aerial systems for radio receivers | |
| GB563520A (en) | Improvements in or relating to electrical apparatus including networks suitable for use for dual signal transmission | |
| GB469579A (en) | Image suppression system for superheterodyne radio receivers | |
| GB466981A (en) | Improvements in or relating to antenna coupling devices | |
| GB443582A (en) | Improvements in or relating to radio receivers | |
| GB360062A (en) | Improvements in and relating to tuned circuits | |
| GB242636A (en) | Improvements relating to high frequency telephony | |
| GB449224A (en) | Improvements in or relating to television receivers | |
| GB368479A (en) | Improvements in or relating to radio and like high frequency receivers | |
| GB517845A (en) | Improvements relating to radio receiving devices | |
| GB449470A (en) | Improvements in radio receiving apparatus | |
| GB460787A (en) | Improved selectivity and fidelity control in high frequency circuits | |
| GB481221A (en) | Improvements in or relating to radio receiving systems | |
| GB507495A (en) | Improvements in oscillatory circuit arrangements for modulated ultra-short waves | |
| GB258969A (en) | Improvements in or relating to radio receiving apparatus comprising means for rejecting undesired signals | |
| GB470372A (en) | Improvements in or relating to radio and like receivers | |
| GB450858A (en) | Television receiver | |
| GB463006A (en) | Improvements in or relating to devices for coupling tuned circuits in radio-receivers and the like | |
| GB600301A (en) | Improvements in aerial circuit arrangements for multi-wave range radio receivers | |
| GB388732A (en) | Improvements in radio frequency receivers |