STANDARD OPERATING PROCEDURE CHART FOR RADIO SET AN/GRC-106 (Pre-Installed) STEP 17. UNIT CONTROL OR SWITCH POSITION Transmit and Receive in the SSB Voice Mode. Amplifier Receiver/ Transmitter HV Reset: Operate Service Selector: SSB NSK Audio Gain: Comfortable Listening Level Manual RF Gain: Fully CW VOX: PUSH-TO-TALK Squelch: ON (if noise level is undesirable in the absence of received signals). STEP 18. Receiver/ Transmitter Service Selector: AM Audio Gain: Comfortable listening level Manual RF Gain: Fully CW VOX: PUSH-TO-TALK Squelch: ON (if noise level is undesirable in the absence of received signals). 4 CONTROL OR SWITCH POSITION Transmit and Receive in the CW Mode. Amplifier Receiver/ Transmitter 20. 18. Transmit and Receive in the AM Mode. Amplifier HV Reset: Operate UNIT HV Reset: Operate Service Selector: CW KHz: Lower 2 KHz BFO: Adjust for Desired Tone Audio Gain: Comfortable Listening Level Manual RF Gain: Fully Clockwise Stopping Procedures. Receiver/ Transmitter *GTA 11-03-025 Service Selector: STANDBY NOTE: Wait two minutes. Amplifier PRIM PWR: OFF OPERATING PROCEDURES RADIO SET AN/GRC-106 Approved for public release, distribution is unlimited. DISTRIBUTION: US Army Training Support Centers (TSCS) Rec/Trans - Svc Sel: OFF Power Supply / Vehicle Power: OFF NOTE: For compliance with security regulations “zeroize” your MHz and MHz controls. 5 GPO : 1994 0 - 162-069 Headquarters, Department of the Army MARCH 1991 *SUPERSEDES GTA 11-3-18, JULY 1982 STANDARD OPERATING PROCEDURE CHART FOR RADIO SET AN/GRC-106 (Pre-Installed) STEP 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. UNIT CONTROL OR SWITCH POSITION POWER SUPPLY/. OFF VEHICLE POWER Inspect Ground AN/GRC-106 Inspect Antenna System AN/GRC-106 Check for proper installation ALL CABLES Inspect Heat Exchanger Amplifier AM-3349 Service Selector: OFF RECEIVER/TRANSMITTER RT-662 or RT-834 PRIM PWR: OFF Amplifier AM-3349 POWER SUPPLY/ ON VEHICLE POWER Service Selector: OVEN ON RECEIVER/TRANSMITTER NOTE: (10 minute warm-up) VOX: Push To Talk Squelch: OFF Noise Blanker: OFF (RT-662 only) BFO: Mid-Range Manual RF Gain: Fully Clockwise Audio Gain: Mid-Range Freq Vernier: OFF Amplifier 1. HV RESET: Operate STEP UNIT CONTROL OR SWITCH POSITION 11. Receiver/Transmitter Service Selector: STANDBY 12. Amplifier PRIM PWR: ON 90 seconds warm-up) (NOTE: NOTE: Observe the signal level meter on the receiver/ transmitter needle should be in the extreme right portion of the meter scale. Check that the amplifier blowers are working. 13. Receiver/Transmitter NOTE: Observe the signal level meter. Needle should return To the extreme left portion of the meter scale. 14. Amplifier NOTE: Observe that the test meter pointer indicates within The area of the two dark green wedges (top scale). Service Selector: SSB NSK Test meter Switch: PRIM VOLTS 2. STEP UNIT CONTROL OR SWITCH POSITION 15. Receiver/ Transmitter 16. Amplifier MHz and KHz Controls: to assigned operating frequency. ANT TUNE – ANT LOAD: To settings obtained from chart. HV RESET: TUNE CAUTION: DO NOT LEAVE THE HV RESET SWITCH IN TUNE POSITION LONGER THAN TWO MINUTES ! (Wait for a deflection on the ANT TUNE and ANT LOAD Meters). Adjust ANT TUNE and ANT LOAD: Controls for a center scale reading on both meters. Test Meter Switch to: Area Indicated: HV RESET: Operate Volts • Low Volts • High • Driver CUR Drive • Grid CUR • PA • Power Out 3. Within the two dark green wedges Within or to the left of the two gray wedges.
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