852 Division - (500-series Performance)

Exchange Area and Operator Services Transmission

Documents

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852-220-100-i1-500 Series Sets General Description Tl 852-220-100-i1-500 Series Sets General Description Tl

Date added: 09/22/2010
Date modified: 11/07/2010
Filesize: 2.77 MB
Downloads: 894
May 1952.  500 series design objectives, mechanical, electrical and transmission features, noise crosstalk and sidetone considerations in design and performance.

852-220-101-i1-500 Series Transmission A B J K Sets Tl 852-220-101-i1-500 Series Transmission A B J K Sets Tl

Date added: 09/22/2010
Date modified: 11/07/2010
Filesize: 2.07 MB
Downloads: 557
May 1952. Electrical characteristics and transmission performance of the 500 and 501 A, B, J and K sets.  Crosstalk and sidetone considerations and effects of longitudinal noise and set unbalance.  (With and without 311A equalizer.)  Circuit description and diagram.

852-220-102-i2-500 Series Transmission C D Sets Small-File Tl 852-220-102-i2-500 Series Transmission C D Sets Small-File Tl

Date added: 09/22/2010
Date modified: 11/07/2010
Filesize: 1.57 MB
Downloads: 518
October 1956.  Electrical characteristics and transmission performance of the 500 and 501 C and D sets.  Crosstalk and sidetone considerations and effects of longitudinal noise and set unbalance.  (Using 425B network with varistors.)  Circuit description and diagram.

852-220-102-i2-500 Series Transmission C D Sets Tl 852-220-102-i2-500 Series Transmission C D Sets Tl

Date added: 09/22/2010
Date modified: 11/07/2010
Filesize: 5.03 MB
Downloads: 732
October 1956.  Electrical characteristics and transmission performance of the 500 and 501 C and D sets.  Crosstalk and sidetone considerations and effects of longitudinal noise and set unbalance.  (Using 425B network with varistors.)  Circuit description and diagram.

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