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Inside A Collins XF-115C 500 hz CW Filter


 

Ever wonder what the inside of a Collins mechanical filter looks like?


 

You must be one of those kids that always has to take things apart to see how they work
HI HI
73, Mike


 

Guilty!? My parents could tell you horror stories (for them) about me taking apart things when I was very young.? :^)? And that's only the things they found out about. Hihi!

But the story about the filter is that after looking for two years in Canada, I found only 3 but of the first two, one wanted Paypal only (which I don't do), the 2nd one I missed by a few hours, 3rd one: success! ....until it arrived in the mail totally crushed.


 

That is unfortunate...?? I hope you can make a claim with mail service.? I wonder if it is at all salvageable


 

Unfortunately my soldering iron packed it in so I haven't been able to remove that 2nd PC board the crystals are mounted on.? Notice the braille-like bumps on the ends of the silver cylinders.