pdf Desk Stands, 51mod Tl Popular

Published on 20 August 2010 2824 downloads

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51mod_tl.pdf

Desk Stands, 51AL Modified for Anti-Sidetone Service. The 5A varistor shown is required only for 52AB and 152AB desk stands, and when used at sidetone stations on grounded ringing lines the subscriber set must have a separate ringing condenser except subscriber sets having 313A vacuum tubes. Use should be restricted to individual lines without extensions and only one low impedance or two high impedance ringing bridges are permitted on the line.

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