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Show Cheapest and Simplest Regenerative Receiver The novice is always on the lookout look-out for a simple and cheap receiving set, which la efficient In operation. Here Is what Is believed to be the best In this respect ever described. For the receiver the following parts are required: re-quired: One variometer; one 2S-plate variable condenser, with vernier; one 1 Inch switch lever; two contact points. The usual vacuum tube and Its accessories fill the rest of the bill. With the usual amateur antenna, this receiver will easily respond to transmitters trans-mitters operating on wave-lengths from i megohm DO0SH.F Aww I JDom 1 L d p hililililiP - By Breaking the Connection From Rotor to Stator, Any Variometer Can Be Adjusted to This Circuit. The Rotor Coll Functions as the Tickler. 176 up to and including 500 meters. The accompanying sketch explains how tt is done. First, single connections are brought out from the two outside windings of the variometer, so that they can be brought out to the two contact points. The leads from the Inside or rotor coil of the variometer are connected In the plate-circuit of the vacuum tube, thus converting it Into a tickler coll. Regeneration Is controlled In the usual manner, by ad-Justing ad-Justing the rotor coll. For reception on the lower wave-lengths, the switch arm Is placed on the contact point marked 1, and on contact point 2 for the higher waves. This is a good stunt and well worth trying. Radio News. |