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BELL SYSTEM TECHNICAL JOURNAL 



in small installations where it may be desired to be mounted on a 

 low rack. 



By the uniform use of these general mounting arrangements for all 

 of the new repeater equipment, including the accessory apparatus as 

 well as the repeater sets themselves, it will be possible, where desired, 

 to serve a large number of repeaters with a small amount of testing 



NETWORK 

 EQUIPMENT' 



TERMINAL STRIP 



Fig. 7 — Panel Mounted Repeaters as Arranged in a Small Installation 



equipment. For example, in the case of the voltmeters and ammeters 

 required, it will be possible to employ but one meter panel for as many 

 as 120 repeaters. Thus, an economy in equipment as well as a saving 

 in space will be effected. 



Fig. 8 shows how some of the principal features of this proposed 

 type of set, which distinguish it from the earlier types of repeaters, 

 are related to the circuit arrangement, as well as to the mechanical 

 design. Previously, the apparatus which it is now proposed to mount 

 in distinct groups on separate panels, as indicated in this diagram, 

 was assembled together in one repeater unit. Several types of sets 

 were accordingly necessary to meet the various field conditions. This 

 is to be avoided in the new design by separating from the basic re- 



