The Coil Slider Tuner and Crystal Radio was able to work with a Germanium crystal diode and it played 3 or 4 radio stations, with the antenna wire and ground wire connected; I tried using a microwave diode but I got a AM high frequency area that didn't seen to have any radio station there but different static areas. I now can receive 11-13 radio stations using both the Coil Slider Tuner and Crystal Radio with the Crystal Radio Set, the radio coil tuned in most of the radio stations, the antenna coil tuned the radio AM band area so you could get more stations, and made some stations louder; and the Crystal Radio Set that was connected with wires where the crystal connections were for on the Coil Slider Tuner and Crystal Radio Set (with antenna side of the crystal wire to the antenna clip, and the other side of the crystal diode terminal to the ground clip), instead of its crystal diode on the Coil Slider Tuner and Crystal Radio; and used the Crystal Radio Set's earphone, also. The Crystal Radio Set was able to separate, and divide double radio stations; so each one could play individually. The radio configuration now receives as many radio stations about as good as a good transistorized radio does, now.