SOMF. ir.RY l.OXC TF.I.I-l'IIOSE CIRCUIIS 



501 



apjx'ar as an infinitily Ioiik line. The slight irregularity indicated 

 by the humps in the impedance curve is due to a short section of 

 non-loaded entrance ial)le at the distant end. I"ig. .') shows the sante 

 section of line terminated at the distant end 1)\- the impedance of the 

 re(HMter into which it normally works. The impedance character- 



$-too 



IZOO I600 £000 



Kig. 5 — Impedance Characteristic 216 Mile Re|ioater Section Non-Loaded 16.S mil 



I'liysical Circuit (Terminated at Distant Knd by Passixe Impe<lance of .Adjacent 



Repeater) 



l-iK. 6 — -Passive Input Im|)edance Char.icteristic of Improved "22" '1"\ |H' Re|H:ater 



istic of the repeater is shown in Fig. (i. The dotted curves in Figs. 



4 and 5 are the impedance components of the network used to balance 



the line circuit. This network is of the precision type,' designed 



for use in connection with long non-loaded open wire circuits which 



employ rep)eaters amplifying a wide band of frequencies. 



• "Telephone Repeaters." by B. Ciherardi and F. B. Jewett, .A.I.E.E. Transactions, 

 \'ol. XX.\\'III, No. 11, Novemlier, 1Q19. See also "Imix-dancc of Smooth Lines 

 and Design of Simulating Networks," Ray S. Hoyt, Technical Journal, .April, 192.5. 



