SE322277B - - Google Patents

Info

Publication number
SE322277B
SE322277B SE3051/68A SE305168A SE322277B SE 322277 B SE322277 B SE 322277B SE 3051/68 A SE3051/68 A SE 3051/68A SE 305168 A SE305168 A SE 305168A SE 322277 B SE322277 B SE 322277B
Authority
SE
Sweden
Prior art keywords
airport
photo
cells
tape
primary
Prior art date
Application number
SE3051/68A
Inventor
C Granqvist
Original Assignee
Aga Ab
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 Aga Ab filed Critical Aga Ab
Priority to SE3051/68A priority Critical patent/SE322277B/xx
Priority to NO45569A priority patent/NO125123B/no
Priority to GB1265331D priority patent/GB1265331A/en
Priority to FR6903597A priority patent/FR2003371A1/fr
Priority to DE19691909977 priority patent/DE1909977A1/en
Priority to JP1714369A priority patent/JPS499829B1/ja
Priority to AT229569A priority patent/AT293516B/en
Publication of SE322277B publication Critical patent/SE322277B/xx

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
    • H03J5/0245—Discontinuous tuning using an electrical variable impedance element, e.g. a voltage variable reactive diode, in which no corresponding analogue value either exists or is preset, i.e. the tuning information is only available in a digital form
    • H03J5/0254—Discontinuous tuning using an electrical variable impedance element, e.g. a voltage variable reactive diode, in which no corresponding analogue value either exists or is preset, i.e. the tuning information is only available in a digital form the digital values being transfered to a D/A converter

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Switches Operated By Changes In Physical Conditions (AREA)
  • Audible And Visible Signals (AREA)
  • Optical Communication System (AREA)
  • Push-Button Switches (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)

Abstract

1,265,331. Radio receivers and transmitters. AGA A.B. 7 Feb., 1969 [7 March, 1968], No. 6689/69. Headings H3Q and H4L. A selective switching device comprises a plurality of manually operable switching members A, B, C, D operatively connected with primary circuit elements A1-D1, A2-D2, secondary circuit elements 1-16 selectively connected in circuit with the primary circuit elements by activation of a plurality of photocells P1-P4, an adjustable member AM for activating selected ones of the photo-cells, and a displaceable apertured screen member including a tape SM interposed between a light source LS and the photo-cells and connected with the adjustable member AM so as to be displaceable in response to the adjustable member. As shown, the device is used to select different wavebands in a radio transmitter-receiver of an aircraft. When a pilot approaches a certain airport he selects that airport by turning knob AM until the name of that air-port is seen in window DM. This rotation of knob AM moves the tape SM into position so that the apertures (AP, Fig. 3, not shown), corresponding to this airport are positioned between the lamp LS and the photo-cells P1-P4. There is a photo-cell connected between each crossing point of the primary and secondary circuits A1-D1, 1-16, so that the photo-cells which are energized through the apertures in the tape connect certain of the primary and secondary conductors to select the required waveband. It is arranged that by pressing push-button A the transmitter receiver is prepared to communicate with the control tower of airport A. If it is required to communicate with the control tower of another airport B then this airport is selected in window DM by rotating knob AM, this selects a different aperture arrangement on the tape SM and the push-button A is pressed. Similarly pushbutton B will operate the transmitter receiver differently depending on the aperture arrangement, i.e. airport selected.
SE3051/68A 1968-03-07 1968-03-07 SE322277B (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
SE3051/68A SE322277B (en) 1968-03-07 1968-03-07
NO45569A NO125123B (en) 1968-03-07 1969-02-06
GB1265331D GB1265331A (en) 1968-03-07 1969-02-07
FR6903597A FR2003371A1 (en) 1968-03-07 1969-02-14
DE19691909977 DE1909977A1 (en) 1968-03-07 1969-02-27 Selector switch device
JP1714369A JPS499829B1 (en) 1968-03-07 1969-03-05
AT229569A AT293516B (en) 1968-03-07 1969-03-07 Selector switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE3051/68A SE322277B (en) 1968-03-07 1968-03-07

Publications (1)

Publication Number Publication Date
SE322277B true SE322277B (en) 1970-04-06

Family

ID=20261301

Family Applications (1)

Application Number Title Priority Date Filing Date
SE3051/68A SE322277B (en) 1968-03-07 1968-03-07

Country Status (7)

Country Link
JP (1) JPS499829B1 (en)
AT (1) AT293516B (en)
DE (1) DE1909977A1 (en)
FR (1) FR2003371A1 (en)
GB (1) GB1265331A (en)
NO (1) NO125123B (en)
SE (1) SE322277B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7607257A (en) * 1976-07-01 1978-01-03 Philips Nv TELEVISION RECEIVER WITH A FREQUENCY SYNTHESIS TUNING.
JPH0198100A (en) * 1987-10-09 1989-04-17 Japan Radio Co Ltd Mls receiver

Also Published As

Publication number Publication date
GB1265331A (en) 1972-03-01
JPS499829B1 (en) 1974-03-06
NO125123B (en) 1972-07-17
AT293516B (en) 1971-10-11
FR2003371A1 (en) 1969-11-07
DE1909977A1 (en) 1969-11-27

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