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  • The TRR-27 provided 5 radio intercept positions. Each position had 2 R-390A/URR receivers, and manual typewriter, also known as a "mill".
  • One position also had a tape recorder (possibly an AN/TNH-11)
  • Photo of TRR-27 operator position with 2 receivers and mill:

TRR27 interior.jpg

  • TRR-27 cut away drawing:



  • TM 32-5895-217-14&P Sept.1980
  • TM 32-5895-217-14&P-HR Sept 1980