HAGENUK Band Pass Filter and PA protection

[W9GB]

I read this QRZ question about the Hagenuk 500 HF Amplifier
http://forums.qrz.com/showthread.php...-pa-500-hf-amp

I have the Bandpass Filter and PA protection removed from Hagenuk HF equipment,
that I acquired several years ago.

Hagenuk_Bandpass.jpg
I am looking for a manual or circuit diagrams (schematics) in order to use or adapt
these parts for a DIY Build project.

I have sent inquiries to other amateurs, that have Hagenuk radios, but they have not yet replied.
If you can help, I would appreciate it.

all the best
73, su1hz
Hassan Zidan
Cairo, Egypt

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.
[i]In your board, Air Wound coils are used -- while the HF Projects board used coils wound on Torroid cores
http://www.hfprojectsyahoo.com/kitlplowpafi.html

HF_Projects.jpg

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

==
73, greg - w9gb