. Practical wireless telegraphy; a complete text book for students of radio communication . ammeter, a resonance indicator is connected in series with theantenna circuit. It consists of a small glow lamp shunted by a loop of wire upon whichbears a sliding contact. By regulating the length of the shunt circuit, the proportion ofcurrent flowing through the lamp can be carefully regulated. STANDARD MARINE SETS OF AMERICAN MARCONI CO. 251 The short wave condenser consists of two .001 micfofarad condensers connected in serieswhich are shunted out of the circuit by a knife blade switch. This switch
. Practical wireless telegraphy; a complete text book for students of radio communication . ammeter, a resonance indicator is connected in series with theantenna circuit. It consists of a small glow lamp shunted by a loop of wire upon whichbears a sliding contact. By regulating the length of the shunt circuit, the proportion ofcurrent flowing through the lamp can be carefully regulated. STANDARD MARINE SETS OF AMERICAN MARCONI CO. 251 The short wave condenser consists of two .001 micfofarad condensers connected in serieswhich are shunted out of the circuit by a knife blade switch. This switch also connects theaerial to earth for protection against lightning. The type I aerial changeover switch furnished with this set is fully described in Para-graph 155. This switch in the transmitting position: (1) Closes the alternating current circuit to the transformer; (2) Closes the field circuit to the generator; (3) Disconnects the aerial from the receiving tuner primary; (4) Places the detector, head telephone and secondary of the receiving tuneron short circuit. TYPE 111 «CEJVtfl. V UCHTNMG SfflTCH Fig. 266d-Complete Wiring Diagram of the,K K W- Cargo Transmitting Set with Type 112 Receiving■B. ^1^ ^ V e rj.^^^ an^i Type I Aerial Changeover Switch. In the receiving position the reverse operations are performed. ... ,. - The remainder of the type P-9 equipment comprises a type C transmitting key, type Ulreceiving tuner and a pair of 2,000 ohms D. H. receivers. In addition, lead-covered wire, rubber-covered wire and copper tubing is supplied torconnecting up the apparatus. ., . t, u i c^ The type 112 receiving tuner is described in detail in Paragraph lio- . (h-) Installation. The main D. C. line to the motor generator and hand starter is inter-rupted by a 30 ampere knife blade switch which is fused for 20 amperes. This .s placed m a °T^:^^AfT.^V^^ to studs No. 1 and No. 2 of the terminal boardwith No iflead-covered wire. Stud No. 3 of the terminal board connect
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Keywords: ., bookcentury1900, bookdecade1910, booksubjecttelegra, bookyear1917
