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bandpass filter

Handy Andy said:
Some board did not need a slug for the Driver - but when you use Bipolar, they need one to couple the tank to both the transistor and the network.

You may have a "converted radio" check the Final - see if you have an IRF 520 or 13N10 FQP - if it's bipolar and missing the slug - then the radio was certainly reworked...the MOSFET conversion didn't need the slug in there.D
Click to expand...
It looks like its original to me. I just think somone was tuning with a watt meter only. It will be a good project for me to learn on. The issue is where to find replacement slugs other than parts radios?
 
20221028_172802.jpg

My bandpass filter I use for 11 meters
 
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