This experimental good sensibility radio was obtained from a 1968 magazine. The magazine no longer exists, but the radio can still be mounted. The coil consists of 100 turns of 28 wire on a movable ferrite core for tuning. TR1 can be a BC548, TR2 a BC558 and TR3 a BD136. Power can be supplied with voltages from 3 to 6 V and the circuit requires an antenna.