GB493565A - Improvements in tuning devices for wireless receivers - Google Patents
Improvements in tuning devices for wireless receiversInfo
- Publication number
- GB493565A GB493565A GB1285337A GB1285337A GB493565A GB 493565 A GB493565 A GB 493565A GB 1285337 A GB1285337 A GB 1285337A GB 1285337 A GB1285337 A GB 1285337A GB 493565 A GB493565 A GB 493565A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tuning
- shaft
- control
- receiver
- contact
- 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
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
- H03G3/22—Automatic control in amplifiers having discharge tubes
- H03G3/26—Muting amplifier when no signal is present or when only weak signals are present, or caused by the presence of noise, e.g. squelch systems
Landscapes
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
Abstract
493,565. Wireless receiving - sets. GENERAL ELECTRIC CO., Ltd., and STAFFORD, L. J. May 5, 1937, No. 12853. [Class 40 (v)] In a tuning device for a wireless receiver, the muting switch is operated by the ordinary rotation of the tuning control and is then put out of action by reverse movement of the control. A projecting arm 1 is attached to the control shaft 2 by a collar 3 which has a slipping fit on the shaft 2. When the tuning shaft 2 is rotated, the arm 1 is brought into contact with the stop 4 and this contact constitutes the muting switch. When the tuning indicator shows that the receiver has been tuned to a position slightly beyond the desired station, the receiver is then accurately tuned by reversing the control motion. The contact 1, 4 is thus broken and the muting is removed. The switch can be rendered inoperative by sliding the shaft 2 axially. The invention may be applied to the multi-speed tuning drive described in Specification 491,446, [Group XXXVI].
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1285337A GB493565A (en) | 1937-05-05 | 1937-05-05 | Improvements in tuning devices for wireless receivers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1285337A GB493565A (en) | 1937-05-05 | 1937-05-05 | Improvements in tuning devices for wireless receivers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB493565A true GB493565A (en) | 1938-10-11 |
Family
ID=10012341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1285337A Expired GB493565A (en) | 1937-05-05 | 1937-05-05 | Improvements in tuning devices for wireless receivers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB493565A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2653225A (en) * | 1949-07-22 | 1953-09-22 | Gen Motors Corp | Signal actuated tuner control |
-
1937
- 1937-05-05 GB GB1285337A patent/GB493565A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2653225A (en) * | 1949-07-22 | 1953-09-22 | Gen Motors Corp | Signal actuated tuner control |
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