Rockwell Automation COLLINS MP-20, Руководство оператора

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However, if the battery must be charged in a shorter period of time, operate the
hand-crank generator at a speed that will keep the red light on. In tactical
situations, the hand-crank generator should be operated with the green light on
(reduced generator noise) and the lights should be dimmed, by rotating outer
housing.
Spare battery use
When the charge on a battery is too low to provide adequate power for receiver-
transmitter operation, a clicking sound will be heard on the headset or handset
earpiece. Release the two latches and loosen the two thumbscrews that secure the
two batteries to the 719D-2A Receiver-Transmitter Group. Slide the two batteries
out of the pack frame. Interchange the batteries, and slide back into pack frame.
Secure the batteries to the receiver-transmitter using the two latches and two
thumbscrews.
719D-2A receiver-transmitter group operating controls
The receiver-transmitter is operated from the front, panel of the 377L-2 Receiver –
Transmitter Control. Three versions of the 377L-2 Receiver – Transmitter Control
are shown in figure 14. A headset, handset or telegraph key is connected directly to
its front panel for keying and audio control.
Frequency display and selectors
The receiver-transmitter operating frequency is selected by actuating the 10-MHz,
1-MHz. 100-kHz, 10-kHz, 1-kHz, and 0,1-kHz selectors until the desired operating
frequency is indicated by the display.
Mode selector
The desired operating mode is selected by setting the mode selector to one of the
following positions: AM (amplitude modulation). USB (upper sideband) and, if
available, LSB (lower sideband). CW (continuous wave) may be used in any of
selector positions.
Function selector
The receiver-transmitter operating function is selected by setting the function
selector to one of the following positions:
A. On part no 622-2553-001: OFF, RCV (receiver), and TR (transmit),
B. On part no (i22-2553-002: OFF, H PWR (high power/20 watts pep), and L PWR
2 W (low power/2 watts pep).
C. On part no 622-2553-003: LO PWR (low power/2 watts pep) and HI PWR (high
power/20 watts).