LOW NOISE 420 MHz ATV RECEIVER CONVERTER


Posted on Feb 7, 2014

L1, Q1, L2, and L3 compose an RF amp’’fter stage that feeds Ml, a doubly balanced mixer. Q4 is alocal oscillator stage In the 375-MHz range Signals h the 420 ‰to 450-MHz range from Q1 are mixed in M1 and fed through filter L6/L7/C17, where only the 60- to 70-MHz (CH3 CH4) signals pass. The IF signal is passed to Q3, an IF amplifier. The overall


LOW NOISE 420 MHz ATV RECEIVER CONVERTER
Click here to download the full size of the above Circuit.

gatrns 25 dB and the noise figure less than 2 dB. A kit of all parts, including the PC board, is available from North Country Radio, P. O. Box 53, Wykagyl Station, New Rochelle, NY 10804.




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    Control a processor`s power supply in real time
    Miniature Black and White TV System
    Built-in battery charger, Li-Ion
    Amplifier-for-signal-supply
    Charge-pool-power-supply
    reading electricity meter ir impulses
    Multiple switches on Arduino analog pin schematic
    Bedside Lamp Timer
    Solid State Tesla Coil/High Voltage Generator
    Battery Tesla Switch 720 Watt Mosfet Circuits
    Ammo Box Sequencer
    JS20 single-junction transistor time relay circuit



    Top