Section I. DESCRIPTION AND USE OF OPERATOR'S
INDICATORS, CONTROLS AND CONNECTORS
2-1. GENERAL INFORMATION
Each radio teletypewriter set uses different operating instructions for the
modem. Special instructions are contained in the manual for each radio
teletypewriter set used.
This section contains a descriptive guide of modem controls, indicators
and connectors for the operator.
2-2. I N D I C A T O R S
indicates direct current flow in dc loop No. 1.
DC LOOP NO. 1
DC LOOP NO. 2
indicates direct current flow in dc loop No. 2.
indicates signal strength of received mark and space
indicates dc voltage level (+20 v) regulated dc supply.
indicates signal strength of receive (audio) signals.