• Introduction
• Objectives
• System Requirements
• 1. Radar Data Acquisition
  (RDA) Unit
  • Introduction
  • Transmitter
  • Antenna
    • Overview
    • Volume Coverage Pattern
      (VCP)
    • Long Pulse vs. Short Pulse
    • Operational Modes
    • AVSET
  • Receiver
  • Signal Processor
    • Overview
    • Ground Clutter Suppression
    • Calculation of Base Data
    • Range Unfolding of Doppler
      Data
    • Archive Level I
  • Keyboard Video Mouse (KVM)
    and Monitor Interface
• 2. Wideband
  Communications
  • Introduction
  • Direct Wire Link
  • Private T1
  • Telco (Commercial) T1
  • Microwave Line-Of-Site
    (MLOS)
• 3. Radar Product Generator
  (RPG)
  • Introduction
  • Product Generation
  • RPG Control
  • Product Distribution
    • Overview
    • Archive II Data Distribution
      System
    • Archive Level III
• 4. Master System Control
  Function (MSCF)
  • Introduction
  • The RDA HCI at the MSCF
  • The RPG HCI at the MSCF
    • Overview
    • RDA Changes Initiated at
      the RPG HCI
    • Optimizing Data Quality
    • Status Monitoring
    • Free Text Messages
    • Product Distribution
      Communications
• 5. Product Distribution
  Communications
• 6. User Systems
  • Introduction
  • Principal Users
  • Other Users
    • Overview
    • Archive II Data Distribution
      System
    • Radar Product Central
      Collection/Distribution
      System (RPCCDS)
  • Advanced Weather
    Interactive Processing
    System (AWIPS)
    • Overview
    • AWIPS Narrowband
      Communications to
      the RPG
    • RPCCDS and Archive Level III
    • The AWIPS Workstation
• Acronym Listing

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User Systems - Advanced Weather
Interactive Processing System (AWIPS):
AWIPS Narrowband Communications to the RPG

All Advanced Weather Interactive Processing System (AWIPS) sites with co-located Radar Product Generators (RPGs) have a dedicated Transmission Control Protocol/Internet Protocol (TCP/IP) connection from the AWIPS Local Area Network (LAN) to the RPG LAN. For NWS sites with Master System Control Function (MSCF) control of DoD or FAA radars, AWIPS connects to those RPGs by a Frame Relay circuit. Details on controlling these connections are provided in DLOC Topic 6. All AWIPS sites can also access non-dedicated RPGs using the One-Time Request (OTR) and Radar Multiple Request (RMR) process through the AWIPS WAN.

AWIPS both receives and sends data to dedicated RPGs through the Product Distribution (sometimes called Narrowband) Communications lines. AWIPS data servers transfer Rapid Refresh (RAP) model data to the RPG. In doing so, users can automate the computation of RPG algorithm inputs that require environmental data (e.g., the Hail Detection Algorithm and the Environmental Wind Table).

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