Rockwell Automation COLLINS MP-20 Operator's Manual
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Rockwell Automation COLLINS MP-20 Operator's Manual

Rockwell Automation COLLINS MP-20 Operator's Manual

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Summary of Contents for Rockwell Automation COLLINS MP-20

  • Page 2: Table Of Contents

    Introduction-----------------------------------------------------------------------------------------3 Radio Set Components----------------------------------------------------------------------------4 Operating Configurations and Options--------------------------------------------------------9 Standard Two-Person Configuration----------------------------------------------------------9 Single Operator Configuration------------------------------------------------------------------9 Cold Weather Configuration-------------------------------------------------------------------10 Audio/Keying Option---------------------------------------------------------------------------- 10 Input Power Option------------------------------------------------------------------------------10 Antenna Options----------------------------------------------------------------------------------10 Preparation For Use------------------------------------------------------------------------------11 963A-1 Radio Set Harness---------------------------------------------------------------------- 11 719D-2A Receiver-Transmitter Group------------------------------------------------------ 13 Power Pack---------------------------------------------------------------------------------------- 14 Headset, Handset and Telegraph Key------------------------------------------------------- 14 938A-2 Antenna---------------------------------------------------------------------------------- 14 Antenna Counterpoise-------------------------------------------------------------------------- 15...

  • Page 3: Introduction

    Introduction The MP-20 Radio Set (figure 1 is a lightweight HF portable receiver – transmitter which offer many desirable features. Figure 1. MP-20 Radio Set. ■ 20 watts of RF power output (pep or average) ■ 280,000 communications channels in the 2- to 30-MHz band at 100-Hz increments ■...

  • Page 4: Mp-20 Radio Set Components

    MP-20 radio set components The MP-20 Radio Set, shown in figure 2, consists of the 719D-2A Receiver Transmitter Group, 612A-1 Battery, 963A-l Radio Set Harness, H-189/GR Handset, and 938A-2 Antenna. Figure 2. MP-20 Radio Set Components...
  • Page 5 7191D-2A receiver-transmitter group A compact lightweight receiver - transmitter consisting of three units: 377L-2 Receiver – Transmitter Control, 671V-2 Receiver – Transmitter, and a 549A-2 Amplifier-Coupler. When mechanically latched together, these units are electrically connected through mating connectors. All operating controls for the receiver- transmitter are located beneath a hinged cover on the 377L-2.
  • Page 6 Figure 3. Accessories Components (Sheet 1).
  • Page 7 Headset A headset consisting of two earpieces, a boom microphone, a push to talk (ptt) switch, a headband, and a coiled cord and plug. Telegraph key The telegraph key is adjustable in tension and gap, and has a 0.9-metre (3-foot) flexible cord and plug.
  • Page 8 Figure 3. Accessories (Sheet 2).

  • Page 9: Operating Configurations And Options

    412Y-2 battery charger A portable battery charger, with a cover, that allows up to six 612A-1 Batteries to be charged or discharged simultaneously. It operates with either +28 volts dc power or 110 volts ac power. A simple internal wiring change permits Operation on 220-V ac power.

  • Page 10: Cold Weather Configuration

    Cold weather configuration During very cold weather, the 612A-1 Battery must be kept warm to obtain sufficient mission time. The 540L-1 Battery Cable allows the 612A-1 Battery to be removed from the 963A-1 Radio Set Harness and to be carried in a battery bag under the operator's outer clothing.

  • Page 11: Preparation For Use

    Preparation for use Make sure the contents of Operating Configurations and Options is understood before proceeding with the Preparation for Use procedures. 963A-1 radio set harness A. Remove pack frame, field pack, and straps from shipping container B. Place nylon backrest over top and bottom horizontal tubular parts of pack frame. Refer to figure 4.
  • Page 12 D. The two padded shoulder straps are attached to the pack frame at the top and bottom. Refer to figure 6. The shoulder strap with the quick release assembly is for the left shoulder. Insert the looped (lower) end of the shoulder strap from the inside of the pack frame through the opening at the bottom side (just below the slot that accepts the lower backstrap).

  • Page 13: 719D-2A Receiver-Transmitter Group

    F. The field pack is attained to the rear and bottom of the pack frame. Refer to Figure 7. Place the metal rings, on rear of field pack, over the two hooks on the rear of the pack frame. Insert the webbing straps, on the field pack, through the openings near the hooks, through the buckles, and pull tight.

  • Page 14: Power Pack

    Power pack The power pack for the 719D-2A Receiver – Transmitter Group is the 612A-1 Battery; either by itself, or with a spare battery, or with an extender cable or with a hand crank generator. CAUTION Do not short circuit battery as permanent damage can occur. A.

  • Page 15: Antenna Counterpoise

    Antenna counterpoise A. Unwind the four 10-metre (32.8 foot) braided wires of the counterpoise of the plastic bobbin. B. Stretch four wires in four directions and secure looped ends over stakes pounded in the ground. Refer to figure 8. C. Place receiver – transmitter with whip antenna near center of counterpoise. D.

  • Page 16: 938A-1 Antenna-Vertical Orientation

    938A-1 antenna-vertical orientation A. Unwind the support throw lines and enough antenna wire from each bobbin, for the frequency in use. Markings on the antenna wire are provided to simplify this operation. Connect the ends to the dipole center junction terminals as shown in figure 9.
  • Page 17 of the dipole center junction and connect the snap fastener to the anchor ring. Connect the other end of the feeder cable to the BNC connector on the 549A-2 Amplifier-Coupler. D. Erect the antenna with the wire as close as possible to the vertical position as conditions allow.

  • Page 18: 938A-1 Antenna-Horizontal Orientation

    938A-1 antenna - horizontal orientation A. Unwind the support throw lines and enough antenna wire from, each bobbin for the frequency in use. Markings on the antenna wire are provided to simplify this operation. Connect the ends to the dipole center junction terminals as shown in figure 9.

  • Page 19: Operation

    Operation Perform the procedures described in Preparation for Use before proceeding with either of the following preliminary setup procedures. CAUTION Do not operate the radio set without a suitable antenna. Make sure the antenna is properly connected before tuning the radio set. Preliminary setup for mobile use A.

  • Page 20: Preliminary Setup For Stationary Use

    F. If the H-1S9/GR Handset is being used, plug cable into connector un 377L-2 Receiver-Transmitter Control. Hook handset onto hook on right shoulder strap. G. If headset is being used, place headset around operator's head with earphones over ears and metal connecting bar behind neck. Loop Velcro head strap over head and connect together.

  • Page 21: Spare Battery Use

    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.
  • Page 22 Figure 14. 377L-2 Receiver – Transmitter Control...

  • Page 23: Gain Control

    Gain control The gain control is adjusted for the most desirable listening level. The extreme CCW (counterclockwise) position is OFF on part no 622-2S3S-003 and 0 dBm 600 (constant gain for data levels into a 660-ohm load) on part no 622-2553-001 and 622- 2553-002.

  • Page 24: Voice Communication

    Voice communications A. Set the mode selector to AM, USB, or LSB (if available). B. Set the frequency selectors to the desired operating frequency. C. Turn receiver - transmitter on. This is done on part no 622-2553-001 by setting the function selector to TR, on part no 622-2553-002 by setting the function selector to H PWR or L PWR, and on part no 622-2553-003 by rotating the gain control clockwise and setting function selector to HI PWR or LO PWR.

  • Page 25: Operation Maintenance

    Operation maintenance Clearing tune-incomplete condition After the tune cycle has been completed, the normal tune tone should cease in the headset or handset earpiece. Should a tune-incomplete condition occur, an interrupted tone (beeping) will begin approximately 15 seconds after the tune cycle was initiated, and the unit will revert to the receive mode.
  • Page 26 Normally, batteries will be returned from the field in an unknown state-of-charge. To ensure a full charge of each battery, while avoiding an overcharge (which reduce battery life), all returned batteries should be discharged to a preset lower limit (21 V dc) before beginning the charge cycle.

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