HAGENUK Band Pass Filter and PA protection

Discussion in 'Amateur Radio Amplifiers' started by W9GB, May 6, 2012.

Thread Status:
Not open for further replies.
ad: L-HROutlet
ad: l-rl
ad: L-rfparts
ad: Subscribe
ad: l-gcopper
ad: K3QNTad-1
  1. W9GB

    W9GB Ham Member QRZ Page

    Hassan -

    From you photo, this bandpass filter has SIX distinct filters, that should match a 6 position Band Switch on the Hagenuk radio.
    A picture of that Band Switch (front panel of the Hagenuk radio or amplifier) should tell you the HF frequency range (e.g. 14 - 15 MHz) for each selection.

    This bandpass filter is RELAY Switched, you can see the Relays for each band section and a control / interface section one end of the board.
    Did this come from a Hagenuk HF transceiver (100 watts RF output) or a Hagenuk HF amplifier (~500 watts RF Output) ??
    Based on components, it looks like it came from a 100 watt HF transceiver.

    IF you look at the HF Projects Low Pass Filter Board .. you will note the similarity to your Hagenuk board.
    In your board, Air Wound coils are used -- while the HF Projects board used coils wound on Torroid cores


    That should help get you started.
    You will need to determine the control / relay switching and RF IN/OUT ports.

    73, greg - w9gb
    Last edited: May 6, 2012
Thread Status:
Not open for further replies.

Share This Page