Tactical COMINT

Intercept and locate signals with a compact, fully integrated solution

  • Comprehensive intercept and location of all signals from 20 to 3,000 MHz or 20 to 8,000 MHz
  • 3 GHz/sec fast-scanning detection with simultaneous DF of all detected signals at frequency channelization of 25 kHz (DF First™ technology)
  • Multi-mission support using field-proven DF algorithms
  • Detection and DF of multiple modern signals, such as frequency hopping, agile and burst signals
  • Supports multiple signal types simultaneously
  • DF results available in real-time and recorded for later analysis

Product Description

The TCI Model 803 is a compact Direction Finding (DF) subsystem for Communications Intelligence (COMINT) and Electronic Warfare (EW) applications. The 803 integrates seamlessly with TCI’s Blackbird NextGen COMINT / EW platform to provide a complete signal search, collection, direction finding and geolocation solution. 

The 803 continuously scans, detects, DFs, and records DF results in tasked frequency channels on a 4 or 40 MHz instantaneous bandwidth. Bandwidth is tunable over the 20 to 3,000 or 20 to 8,000 MHz frequency ranges. The dual 40/4 MHz wideband DF capability enables the Model 803 to detect and capture weak signals in crowded RF environments using the 4 MHz instantaneous bandwidth and detect short-duration, frequency-agile and wide-bandwidth signals using the 40 MHz bandwidth

Technical Specifications

Frequency Range
20 to 8,000 MHz

DF Bandwidth
6.25 to 200 kHz

Instrument DF Accuracy
0.1° RMS

System Accuracy

Gain Control
120 dB

IF Bandwidths
40/4 MHz

DF System Sensitivity
10 dB

DF Scan Rate
3 GHz/sec

Tuning Speed
3 ms

Tuning Increments
1 Hz

Image Rejection
90 dB

In-Band Dynamic Range
80 dB

Noise Figure

LO Phase Noise
-110 dBc/hz

Temperature (Operating)
0 to 45°C

Temperature (Storage)
-40 to 70°C

115/230 VAC


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