Junction transistors and diodes are used to replace tubes and relays in a newly designed one-light marker beacon receiver. Ten transistors and three diodes are combined in a dual conversion superheterodyne receiver circuit which draws less than one watt of power and which has a sensitivity of 500 μv. Pass-band selectivity is 80 kc minimum at the 6-db down points and less than 300 kc at the 60-db down points. Dual conversion is used to transform the radio frequencies to a low IF for stable receiver gain. A three-light adapter has been developed utilizing seven junction transistors, two diodes, and miniature LC filters. The unit is the same size and weight as the one-light receiver. The weight of the entire three-light system is less than two pounds. The total current drain, from a 27.5-volt direct current supply, is less than 80 ma. A printed circuit board in a wrap-around case mounts most of the components in a design that withstands shock and vibration without the use of a shock mount.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    A Transistor Marker Beacon Receiver


    Contributors:


    Publication date :

    1957-09-01


    Size :

    2769556 byte




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    Marker Beacon Receivers

    Online Contents | 1994


    Beacon marker transmitter

    Nafzger, L.H. | Engineering Index Backfile | 1936


    Experimental counterrotating marker beacon

    Pearson, H.J.C. / Gilbert, M.S. | Engineering Index Backfile | 1952


    Investigation of Airborne Marker Beacon

    L. A. Dvorsky | NTIS | 1971