GB516900A - Improvements in radio tuning arrangements - Google Patents
Improvements in radio tuning arrangementsInfo
- Publication number
- GB516900A GB516900A GB2070538A GB2070538A GB516900A GB 516900 A GB516900 A GB 516900A GB 2070538 A GB2070538 A GB 2070538A GB 2070538 A GB2070538 A GB 2070538A GB 516900 A GB516900 A GB 516900A
- Authority
- GB
- United Kingdom
- Prior art keywords
- button
- station
- tuning
- tuned
- circuits
- 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
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J5/00—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
- H03J5/02—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with variable tuning element having a number of predetermined settings and adjustable to a desired one of these settings
- H03J5/04—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with variable tuning element having a number of predetermined settings and adjustable to a desired one of these settings operated by hand
- H03J5/12—Settings determined by a number of separately-actuated driving means which adjust the tuning element directly to desired settings
Landscapes
- Structure Of Receivers (AREA)
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
- Transceivers (AREA)
Abstract
516,900. Wireless receiving apparatus. POLYDOROFF, W. J. July 12, 1938, No. 20705. [Class 40 (v)] [Also in Group XXXVI] In a press-button tuning system in which a press-button unit can be set to select a station in a small portion of the frequency range, the whole range being covered by units covering a number of overlapping sub-ranges, each press-button has its individual indicating means, and circuits can tune the set to any station within its range. When the button 3, Fig. 1, is depressed, switches are operated to associate the tuning mechanism 13, 6 with the aerial circuits. The button spindle 11 engages pinion 10 so that rotation of the button moves the coil 6 relatively to core 13 and also, by means of rack 15, moves its individual pointer 16 relatively to the common scale 22, Fig. 3, so that a wanted station can be tuned in. Once the unit is set, the station selected can be tuned by depressing the corresponding button. Fine-tuning adjustments can then be made if necessary by rotating the button ; or, if desired, another station in the sub-range can be selected. Instead of variable inductances, the tuning units may comprise variable condensers 16, 17 as shown in Fig. 2. When a circuit comprises two or more tuned circuits, units in all the circuits may be tuned by means of the simple tuning rod 10. The switches operated by the depression of a push-button, as well as selecting the individual unit, may alter the inductance of the aerial coils.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2070538A GB516900A (en) | 1938-07-12 | 1938-07-12 | Improvements in radio tuning arrangements |
| FR857694D FR857694A (en) | 1938-07-12 | 1939-07-11 | Tuning devices for radio receivers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2070538A GB516900A (en) | 1938-07-12 | 1938-07-12 | Improvements in radio tuning arrangements |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB516900A true GB516900A (en) | 1940-01-15 |
Family
ID=10150309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2070538A Expired GB516900A (en) | 1938-07-12 | 1938-07-12 | Improvements in radio tuning arrangements |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR857694A (en) |
| GB (1) | GB516900A (en) |
-
1938
- 1938-07-12 GB GB2070538A patent/GB516900A/en not_active Expired
-
1939
- 1939-07-11 FR FR857694D patent/FR857694A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR857694A (en) | 1940-09-24 |
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