The Peanut Special II (as of 25 Nov 98)     You will probably look at this and say, "so what?"  Good question.  It looks about like the peanut special, which is really just a jazzed up oatbox, which it is, sort of.  I started with an oatbox radio coil, 45 turns of #24 plastic coated hookup wire on a plastic 40 ounce peanut butter jar.  This is L1, and is tapped every 5 turns.  L2 is 10 turns of #24 enameled magnet wire, selected because I had room left for it on the flat part of the jar, with enough room for about a 1/8 inch separation.  I put alligator clips for the detector and capacitor taps, and  fahnstock clips for connections to L2 and for the chassis ground.   This is a schematic of the finished product:     This gives you a crystal set with a lot of flexibility to play with.  Basic set is to tap capacitor across all of L1, detector to a tap of convenience, about 10 or 15 turns from chassis ground, and put antenna and ground to L2.  This gives you a BC tuning range of about 750 - 1750 kHz, with about 6 dB selectivity at +/- 25 kHz, and about 12 dB at +/- 50 kHz.   With a 365 pF capacitor, you should pretty well cover the BC band.  What else can you do?
    a.  connect chassis and L2 ground; this gives a little more sensitivity.
    b.  tap the capacitor down the coil.  This will get you some HF.   With the capacitor tapped at 5 turns, tuning range was about 3.8 to 4.7 mHz, with a lot of BC bleed over.
    c.  Connect the antenna to a tap on L1 and the ground to chassis; this gives you a little sensitivity, but blows selectivity away.
    d.  Connect the cap directly to the antenna...are you starting to get the picture?  There are over 50 combinations of ways to set this rig up - most of them are pure crap, but this will leave you enough to keep busy for an evening or two.  Wind L2 on a separate core that can slip over or into L1 and you can do even more fancy stuff.
Have fun. HERE is a picture