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31U10/H04LP1 INTRODUCTION TO IMPROVED HIGH FREQUENCY RADIOS (IHFR)

Explore the features and components of AN/PRC-104A and GRC-213 high-frequency radios, their power outputs, modes of operation, and auxiliary equipment like power amplifiers and antenna switching units.

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31U10/H04LP1 INTRODUCTION TO IMPROVED HIGH FREQUENCY RADIOS (IHFR)

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  1. 31U10/H04LP1 INTRODUCTION TO IMPROVED HIGH FREQUENCY RADIOS (IHFR)

  2. RADIO SET AN/PRC-104A CHARACTERISTICS/COMPONENTS

  3. RADIO SET AN/PRC-104A (1) • Characteristics: • - Single Sideband (SSB), • Amplitude Modulation (AM) Radio. • - Operates on Upper Sideband (USB) • Or Lower Sideband (LSB). • - High Frequency (HF) Range • 2.0 To 29.9999 Mhz. • - Power Output 20 Watts.

  4. RADIO SET AN/PRC-104A (2) - Power Supply: BA-5590 (24 to 32 Volts DC) - Planning Range: Whip (Omnidirectional) - 10 Miles Dipole (Directional) - 300 Miles

  5. RECEIVER/EXCITER (RT-1209) (1) Receiver/ Exciter Latch Latch

  6. RECEIVER/EXCITER (RT-1209) (2) • Four Modes of Operation. • - V-RCV. (Voice and IMC) • - V-TR. (Voice and IMC) • - D-RCV. (Data) • - D-TR. (Data)

  7. RECEIVER/EXCITER (RT-1209) (3) • Frequency Display MHz/kHz. • Volume OFF/MAX Control. • Light Button. • Audio Connector (Upper and Lower). • SB Switch. • - USB. • - LSB.

  8. AMPLIFIER COUPLER (RF) AM-6874 (1)

  9. AMPLIFIER COUPLER (RF) AM-6874 (2) • Boosts RT Power (3/10th Watt) to 20 Watts. • Has Built in Tuner, Which Will Tune the Radio • In Approximately 3 Seconds.

  10. AMPLIFIER COUPLER (RF) AM-6874 (3) • Antenna Selector Switch • - Whip (Omnidirectional) Upper Left. • - Dipole (Directional) Center. • - 50 Ohm (Lower Right); This Will Bypass • The Tuner Should It Become Defective. • Radio Will Still Operate As a Transceiver.

  11. RADIO SET AN/GRC-213 (1)

  12. RADIO SET AN/GRC-213 (2) • Characteristics/Components • - Single Sideband (SSB), Amplitude • Modulation (AM) Radio. • - Operates on Upper Sideband (USB) • Or Lower Sideband (LSB). • - High Frequency (HF) • Range 2.0 To 29.9999 Mhz. • Tunes 280,000 Different Frequencies • Within This Range.

  13. RADIO SET AN/GRC-213 (3) • Power Output 20 Watts. • Power Supply • - BA-5590 (24 to 32 VDC) • Planning Range • - Whip (Omnidirectional) - 10 Miles. • - Dipole (Directional) - 300 Miles.

  14. RADIO SET AN/GRC-213 (4) • Additional Information: • - HF Low Power Transceiver. • - Designed for Use on Wheeled or Tracked • Vehicles. • - Internal Antenna Tuner Automatically Tunes • Radio to Match Antenna Within Operating • Frequency Range.

  15. RADIO SET AN/GRC-213 (5) • Components: • - Same As the AN/PRC-104A Except For • The Addition of the Amplifier Power Supply • (AM-7152) and Antenna Switching Unit (SA-2365).

  16. POWER AMPLIFIER (AM-7152) (1)

  17. POWER AMPLIFIER (AM-7152) (2) • Provides Interface and Isolation Between • AN/PRC-104A and Speaker LS-454. • Receives Power Input Via CX-4720. • Provides Auxiliary Power for Another Radio Set.

  18. POWER AMPLIFIER (AM-7152) (3) • Conditions and Filters the Power to Protect • AN/GRC-213 From: • - Over-Voltage • - Noise Spike Transients • - Radio Frequency Interference (RFI) • - Reverse Polarity

  19. POWER AMPLIFIER (AM-7152) (4) • Interfaces With AN/VIC-1 to Provide • Remote Handset Operation. • Interfaces With AN/VIC-1 and VHF FM • Radio Sets to Provide Retransmission Capabilities. • Connects to J102.

  20. ANTENNA SWITCHING UNIT (SA-2365) (1)

  21. ANTENNA SWITCHING UNIT (SA-2365) (2) • Component of Installation Kit and Mounting Base. • Allows for Selection of Antenna: • - Omnidirectional Whip • 2 - 10 • 10 - 30 • - Directional • AN/GRA-50 (Doublet) • NVIS • Long Wire

  22. RADIO SET AN/GRC-193 (1) Antenna Coupler CU-2064/GRC-193A Power Amplifier AM-6545A/GRC-193A Mounting Base MT-6232/ GRC-193A Receiver-Transmitter RT-1209/URC Amplifier Converter AM-6879/URC

  23. RADIO SET AN/GRC-193 (2) • Characteristics/Components • - Single Sideband (SSB), • Amplitude Modulation (AM) Radio. • - Operates on Uper Sideband (USB) • or Lower Sideband (LSB). • - High Frequency (HF) • Range 2.0 to 29.9999 MHz.

  24. RADIO SET AN/GRC-193 (3) • Power Output 100 or 400 Watts. • NOTE: For Classroom Purpose, Use 100 • Watt Position. • Power Requirement to Operate • 20 to 32 VDC.

  25. RADIO SET AN/GRC-193 (4) • Planning Range. • - Whip Antenna - 10 Miles. • - Dipole Antenna - 300 Miles. • NOTE: The AN/GRC-193 Antenna Can Be Remoted • Up to 200 Feet Using an Antenna Siting Kit. • Secure Operations Use a KY-65 or KY-99.

  26. POWER AMPLIFIER (AM-6545A) (1) 5 4 3 2 1

  27. POWER AMPLIFIER (AM-6545A) (2) • Automatically Tuned 100 or 400 Watts. • High Frequency • Range 2000.0 To 29999.9 kHz. • Primary Power at 26.5 VDC Is Supplied • From Vehicular Electrical System or • Other Source and Is Distributed From • The PA to the RT, Amplifier/Converter, • And Coupler.

  28. ANTENNA COUPLER (CU-2064) (1) 1 2 6 5 4 3

  29. ANTENNA COUPLER (CU-2064) (2) • Automatically Matches the Impedance Of • An HF Antenna to a 50 Ohm Coaxial Transmission • Line to Maintain a VSWR of 1.2:1 Or Less Over The • HF Frequency Range of 2000.0 To 29999.9 kHz. • The Coupler Provides a Ready Signal When • Tuning Is Completed. • The RF Output of the PA Is 100 or 400 Watts • Average or PEP+/- 1dB.

  30. AMPLIFIER-CONVERTER (AM-6879/URC) (1) 1 2 3 5 4

  31. AMPLIFIER-CONVERTER (AM-6879/URC) (2) • The Amplifier-Converter Performs Two Main Functions: • - Contains a Frequency-Shift Keying (FSK) • Converter That Interfaces Between a • 75 Baud Standard Teletypewriter (TTY) • and the Audio Circuits of the RT. • - Contains an Audio Amplifier and Speaker • To Provide Audio Output of Signals Received by • The Radio Set. The Desired Function (SPKR ON • or TTY ON) Is Selected by a Front Panel Switch.

  32. RECEIVER-TRANSMITTER (RT-1209) (1)

  33. RECEIVER-TRANSMITTER (RT-1209) (2) • The RT Performs the Conversion of Audio Signals • To Radio Frequency (RF) and RF to Audio. • The RT Operates As a Standard • Receiver-Transmitter RT-1209. • The RT Control Panel Contains Audio Connectors.

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