Well, it’s not like the ships themselves could not tell where the transmission are coming from...
Description: AN/SRS-1 Combat DF Block 0 is a signal acquisition and direction-finding system providing warship commanders with near-real-time indications and warning, situational awareness, and cueing information for targeting. Combat DF greatly improves on existing signals intelligence technology by providing greater flexibility against a wider range of threat signals and increased reliability at lower cost through use of COTS workstations. The Block 1 (AN/SRS-1A) system incorporates the Automated Digital Acquisition Subsystem (ADAS) upgrade enabling exploitation of unconventional and low-probability-of-intercept (LPI) signals.
Program Status: Block 1 is now in Full-Rate Production and is being installed during new-ship construction on Wasp (LHD-1) and Flight II and Flight IIA (DDG 72-95)-class ships. Block 0 systems are also being upgraded with ADAS as back-fits on in-service LHD-1s and DDG-51s originally outfitted with SRS-1. The Block 1 system will eventually outfit seven LHDs, 24 DDG-51 Flight IIs, and four shore sites. Beginning in Fiscal Year 2000, Combat DF has been superseded by the Cooperative Outboard Baseline Logistics Update (COBLU ) Phase 1 system during construction of DDG-96 and follow-on Aegis destroyers and on LHD-8 (if fully funded and built).
Developer/Manufacturer: Sanders, Nashua, New Hampshire.
DOn’t know if they had any of these on hand...
Description: The SSQ-120(V) Transportable-Radio Direction Finder (T-RDF) provides a low-cost Medium/High/Very High/Ultra High Frequency (MF/HF/VHF/UHF) Direction Finding (DF) capability to selected U.S. Navy ships. The receiving and processing equipment is located in a single below-decks equipment rack located in the Ship Signals Exploitation System (SSES) space. A ship receives a permanent “pre-groom” which consists of antennas, cables, and equipment rack. When needed, an equipment suite is carried onboard and installed in the equipment rack. The system can be operated independently in a “stand-alone” mode, or it can be remotely operated via software resident on a SSEE or ACCES system.
Program Status: At the end of Fiscal Year 2001, 19 T-RDF equipment suites have been fielded for use in both Atlantic and Pacific Fleets.
Developer/Manufacturer: Southwest Research Institute, San Antonio, Texas.
Oh, and this -
Old Crows Rule (whoo-hoo)
Cool stuff, not my area of expertise!
Thx for the post.