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#1
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OK, been looking high and low for an IF can so I can add a crystal filter to my
cheap receiver. Tired of going through flea market junk looking for an old tube type junk receiver with a 455 khz input or interstage can. Never found a single one! Surely someone has one they can part with. Needs to be the smaller (3/4 in sq?) with solder tie points. Both windings need to be sorta hi z and should have two slugs that turn. Got lots of swapping goodies and a little cash. Which do you need? Bob, W4PEX for 55 years (broke=not working, retired=not working, retired=broke) |
#2
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How about two older transistor IF cans, secodary-to-secondary. place the
filter in between the low-Z sections and take the output from the primary of the second can? -- Gregg t3h g33k "Ratings are for transistors....tubes have guidelines" http://geek.scorpiorising.ca |
#3
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The filter will be a single crystal with a phasing cap to adjust the null
frequency. I need two signals 180 degrees out of phase which I will get by using two capacitors across secondary with the center grounded. This is the scheme I used years ago and never found another scheme that worked as well for me. Bob (broke=not working, retired=not working, retired=broke) |
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