GB362270A - Improvements in or relating to wireless receiving apparatus - Google Patents

Improvements in or relating to wireless receiving apparatus

Info

Publication number
GB362270A
GB362270A GB756231A GB756231A GB362270A GB 362270 A GB362270 A GB 362270A GB 756231 A GB756231 A GB 756231A GB 756231 A GB756231 A GB 756231A GB 362270 A GB362270 A GB 362270A
Authority
GB
United Kingdom
Prior art keywords
short
circuit
tuning
aerial
march
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
Application number
GB756231A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alcatel Lucent Deutschland AG
C Lorenz AG
Original Assignee
Standard Elektrik Lorenz AG
C Lorenz AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Standard Elektrik Lorenz AG, C Lorenz AG filed Critical Standard Elektrik Lorenz AG
Publication of GB362270A publication Critical patent/GB362270A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J1/00—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general
    • H03J1/06—Driving or adjusting arrangements; combined with other driving or adjusting arrangements, e.g. of gain control
    • H03J1/16—Single control means independently performing two or more functions
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers without distortion of the input signal
    • H03G3/02—Manually-operated control
    • H03G3/14—Manually-operated control in frequency-selective amplifiers
    • H03G3/16—Manually-operated control in frequency-selective amplifiers having discharge tubes
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J3/00—Continuous tuning
    • H03J3/02—Details
    • H03J3/06—Arrangements for obtaining constant bandwidth or gain throughout tuning range or ranges
    • H03J3/08—Arrangements for obtaining constant bandwidth or gain throughout tuning range or ranges by varying a second parameter simultaneously with the tuning, e.g. coupling bandpass filter

Abstract

362,270. Wireless receiving apparatus. LORENZ AKT.-GES., C., 1, Lorenzweg, Tempelhof, Berlin. March 11, 1931, No. 7562. Convention date, March 11, 1930. [Class 40 (v).] In a wireless receiver the volume of selected stations is restricted by a device coupled to the tuning member so that a reduced energy level is applied to any desired stage of the apparatus when the tuning is adjusted to one of the selected stations. The Figure shows a switch the arm 3 of which is arranged to be operated by the tuning condenser spindle and to short-circuit portions of the aerial circuit inductances 5, 6 used for short and long waves respectively. In a modification, Fig. 3 (not shown), damping resistances are connected in parallel to the tuned circuit. Alternatively the volume control may be by a metal screen or short-circuited coil moved relatively to the aerial coupling coil, or may be arranged to include rejector circuits in the aerial circuit. Means may be provided to adjust the energy limiting devices, e.g. the long and shortwave contacts may be adjustably mounted in concentric arcuate slots. Alternatively a number of interchangeable base members carrying contact studs may be provided. The volume control may comprise a potentiometer applied to the lowfrequency amplifier.
GB756231A 1930-03-12 1931-03-11 Improvements in or relating to wireless receiving apparatus Expired GB362270A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE578921T 1930-03-12

Publications (1)

Publication Number Publication Date
GB362270A true GB362270A (en) 1931-12-03

Family

ID=31983824

Family Applications (1)

Application Number Title Priority Date Filing Date
GB756231A Expired GB362270A (en) 1930-03-12 1931-03-11 Improvements in or relating to wireless receiving apparatus

Country Status (5)

Country Link
BE (1) BE377418A (en)
DE (1) DE578921C (en)
FR (1) FR711426A (en)
GB (1) GB362270A (en)
NL (1) NL31551C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2251995A (en) * 1990-11-15 1992-07-22 Thomson Consumer Electronics Audio level equalisation of broadcast fm and narrow frequency deviation fm radio signals

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE753704C (en) * 1939-07-28 1953-02-23 Schaub G Arrangement for switching an economy circuit on and off
DE750586C (en) * 1939-09-10 1945-01-19 Arrangement for radio equipment to block the reception of certain transmitters

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2251995A (en) * 1990-11-15 1992-07-22 Thomson Consumer Electronics Audio level equalisation of broadcast fm and narrow frequency deviation fm radio signals
US5361406A (en) * 1990-11-15 1994-11-01 Thomson Consumer Electronics, Inc. Audio level equalization of broadcast and national weather service FM radio signals
GB2251995B (en) * 1990-11-15 1994-11-02 Thomson Consumer Electronics Audio level equalization of broadcast FM and narrow frequency deviation FM radio signals

Also Published As

Publication number Publication date
NL31551C (en) 1933-07-15
DE578921C (en) 1933-06-19
BE377418A (en)
FR711426A (en) 1931-09-09

Similar Documents

Publication Publication Date Title
GB559717A (en) Improvements in or relating to variable tuning systems for radio signal receiving apparatus and the like
GB362270A (en) Improvements in or relating to wireless receiving apparatus
GB684041A (en) Improvements in or relating to the tuning mechanism of radio apparatus
GB571836A (en) Improvements in or relating to variable permeability tuning arrangements for radio or like apparatus with band-spread tuning
GB514640A (en) Image-suppression system for wireless receivers
US2028534A (en) Variable-selectivity radio receiver
GB631688A (en) Improvements in superheterodyne radio receivers
GB491222A (en) Improvements in variable inductances and transformers for radio transmitters and receivers
GB356726A (en) Improvements relating to radio receiving apparatus
GB405623A (en) Improvements in high frequency inductance devices
GB210549A (en) Receiving apparatus for radio signals
GB409737A (en) Improvements in wireless receiving apparatus
GB244169A (en) Improvements in receiving apparatus for high frequency signalling systems
US1809530A (en) Volume control
GB526464A (en) Improvements in or relating to tuning devices for radio receiving apparatus
GB491532A (en) Improved means for varying the selectivity of radio receivers
GB532253A (en) Improvements in wireless receiving apparatus
GB312442A (en) Improvements relating to wireless telegraph and telephone receiving apparatus
GB326832A (en) Radio receiving sets
GB244484A (en) Improvements in wireless receivers of the superheterodyne type
GB375410A (en) Improvements in or relating to receiving apparatus for electric wave signals
GB379729A (en) Improvements in tuning coil units
GB512348A (en) Improvements relating to the tuning of radio receivers
GB250170A (en) Wireless direction finding apparatus
GB347622A (en) Improvements relating to indicating devices for wireless receiving apparatus