"Harry - SM0VPO" wrote in message
...
http://w1.859.telia.com/~u85920178/

Over 200 projects, many with photo's and most with PCB patterns (BMP
250pixels/inch), even small PDF library and homebrew messageboard.

Latest project is DIY IF cans for valves (tubes) complete with on-line
calculators for the coils. Inc. Photographs.

Would be interested to hear whether anyone has any suggestions for
multi-gand tuning caps (100pf or more). I have been shoving tapered PCB
strips between other and it works a treat, but there must be simpler
methods. Also tried sponge/PCB sandwich with bolt compressor. Also works
well, but capacity limited. Ideas anyone? (Not interested in
varicaps/varactor diodes. They don't work so well with 250vDC!)

It might be easier to vary the inductance. Permeability tuning is getting
popular.

73, Leon