Linear Amplifier

ONE KILOWATT HOME MADE HF LINEAR AMPLIFIER

My FIRST PROJECT REALIZED IN 1980… and after 34 years, it still works fine!!!

The RF Input Tuner
The Antenna relay and the connectors
The ferrite rods with the filament chokes
The power supply inserted in a Midi-size computer tower
Internal view of the power supply
The diode bridge
The capacitor bank with the voltage equalizer resistors
HPIM2020
The 1st version of the case
HPIM1991
BAND SWITCH and the TANK COIL
This is the first version with 2 Valves PHILIPS QB-3,5/750
…And this light warms the heart, don’t you agree?
…And now, I will present you the LATEST VERSION WITH 2 VALVES 4-400 BY EIMAC WITH STELLAR ANODE
HPIM2583_589x446
The final result… And it still works very well!!

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9 Responses

  1. carissimo Giustino , dopo la visone della tua splendida realizzazione , mi sento già meglio-
    con le nuove valvole è veramente spettacolare- trasmette più forza di un grande camino acceso-
    a risentirci –
    un abbraccio
    73
    IZ2WFV

    1. Hi Krzysztof,
      Thanks a lot for visiting my page.Thanks for qso today.
      Merry Christmas and Happy New Year
      Justin

  2. Greetings from the island of Cyprus. Heard well this evening on freq 7.172 khz Lsb mode. 25 th January 2021. Time 18.42 utc working stations in Greece and Germany. My radio Sangean ATS 909 X and long wire antenna. İcom R70. Tecsun Pl 310. I received your signal 5/9…I liked your Greek words. Enjoy your hobby and your beautiful country.
    Best wishes and 73 Costa Constantinides limassol Cyprus and South Africa. Johannesburg.

  3. Hi Costa, only today I read your message. Thank you, I really appreciate your comment ..
    I hope to learn many words in Greek soon … Hi
    I hope to meet you in Aria very soon for an interesting Qso. I wish you the best and good health.
    Hi de Justin
    IK6BGJ
    Pescara

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Linear Amplifier

ONE KILOWATT HOME MADE HF LINEAR AMPLIFIER My FIRST PROJECT REALIZED IN 1980… and after 34 years, it still works fine!!!