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  • This UHF wideband amplifier(Ultra High Frequency amplifier) has a total gain of 10 to 15 dB in the 400 – 850 MHz domain frequency so it can be used where the tv signal is weak.

    For this UHF antenna tv amplifier to work correctly you need to cut the components pins as short as possible. C1, C2, C6, C7 are SMD type ( surface mounted ). This antenna tv amplifier or uhf wideband amplifier need to be build inside of a metal box and then connected close to the tv antenna.

    The power supply is a simple 12V stabilized source. The antenna tv amplifier can be connected directly to the power supply thru coaxial cable of the tv antenna but you need a 10 – 100uH coil on the alimentation line. The tv set will be connected to the uhf amplifier thru a small coupling capacitor.
    Adjusting is easy, just bring the P1 to the middle and then adjust it untill you obtain the best tv image quality.

    Antenna TV amplifier circuit schematic

    wideband uhf antenna tv amplifier

    Tv antenna UHF amplifier components

    L1 = L2 = 2 turns, 3mm Ø
    L3 = L4 = 10uH or 10 turns, 0.2mm Ø on ferrite
    T = 2SC3358


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    26 Responses to "Wideband UHF Amplifier – Antenna TV Amplifier Circuit"

    1. shitturasheed says: on January 30, 2009 at 6:05 am

      could you send such circuit that uses 4uhf transistors to my email?

    2. jay jocson says: on February 11, 2009 at 8:01 am

      hi, can i ask for pcb lay out, also can i ask if what is the specific name of the coil used.

      please mail it to me : jay.jocson@hotmail.com


    3. eedriss tunde says: on March 10, 2009 at 11:10 am

      the picture of the circuit is not complete.

    4. NUMERAH says: on May 7, 2009 at 3:51 pm


    5. NUMERAH says: on May 7, 2009 at 4:04 pm

      plz can u send me complete link regarding these topics

    6. NUMERAH says: on May 10, 2009 at 1:16 pm

      i m waiting boss

    7. Ridwan says: on June 9, 2009 at 7:31 am

      Please send the circuite to my emaile Tanks.

    8. can someone use a amplifier antenna to lisson in on room conversation?

    9. benjamin ohene says: on November 11, 2009 at 2:48 pm

      please i will like to request for simple tv antenna amplifier circuit diagrams.thank you.

    10. Can i use a transformer push pull AB amplifier to increase the power of the inverter to 1000WATT

    11. clement says: on May 9, 2010 at 5:34 pm

      pliz can you come up with uhf preamplifier using an ic to reduce complexity

    12. can i get any circuits diagram of CATV amplifier ‘s slope card 18 db,for 860mhz.

    13. Have you a SCHEMATIC OF UHF TV TRANSMITTER 200 watts?


    14. the transistor 2SC3358 is not here in ugandan market but rather 2SC1500, 2SC2922, 2SC3280 CAN I USE ANY OF THESE TRANSISTORS AND HOW DO I MODIFY THE CIRCUIT TO SUIT? PLEASE HELP ME

    15. matsunaga says: on April 24, 2011 at 3:23 pm


    16. have aulternative local ic name?

    17. Hi Friends,
      Can i cut the transistor long colector pin at 2SC3358 that have some long pin and if i short them i find problem?
      Please guide me.
      Thank every body.
      My E-Mail :angrygtnote@gmail.com

    18. Abilihandsome says: on December 9, 2013 at 9:34 pm

      Pls,can u send circuit diagram of a tv receiver to me via email ?

    19. Joseph Franjieh says: on July 24, 2014 at 10:22 pm

      Whats is the information in the vetical and horisontal of this circuit

    20. Joseph Franjieh says: on July 24, 2014 at 10:24 pm

      2sc3358 of this circuit

    21. Joseph Franjieh says: on July 24, 2014 at 10:30 pm


    22. Name *Kol says: on May 3, 2015 at 2:16 pm

      Comment 2SC3358 transistor, wideband 7Mhz. Tv station broadcasted on 8 MHz. Does transistor work on my tv network? Mail, please

    23. 1n capacitor is not available. Now I want a capacitor in pf format.

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