Description
The 1013B handset consists of a T1 transmitter unit, a LB7 receiver unit, a 11C dial which contains a dirt shield between the number and plate frame to prevent contaminants from jamming the dial gear train, a 2642A transformer, a 840999320 switch assembly which contains a locking and non-locking switch for monitoring and talking, and a rubber dial boot to prevent contaminants from entering the back of the dial. These parts are assembled in orange plastic housings for the 1013B handset, and in a blue plastic housing for the 1013A handset. The 1013B handsets are furnished with a 4-foot H2B cord equipped with two 6A test clips on the test end. A P-22F231 snap assembly is provided to facilitate carrying the handset on a belt. The handset is also equipped with a rubber shoulder rest for a more secure "hands free" operation.
The 1013A, which has been replaced by the 1013B, is the same as the 1013B except that it was equipped with the older P-48V024 switch assembly and has a blue plastic housing instead of the improved-type orange plastic housings and uses the 11A dial without the dirt shields.
The 1013B handset is a general use handset and may be used in any application specified for the replaced 1011B or 1013A handset. However, when monitoring unigauge repeatered loops, the 1013A or 1013B handset must be used. The 1011-type handset cannot be used.
