Barrett, Transceiver, models:

2000 Series	Technical Manual
2030	Operating And Installation Manual
2050	Operating And Installation Manual Quick Reference Manual
2090	Operating And Installation Manual
4050 HF SDR	Operating And Installation Manual Operating Manual Installation Manual
4090 HF SDR	Operating And Installation Manual
550	User Manual
950	Operating And Installation Manual
950 HF SSB	Operating And Installation Manual
HF 2000 Series	User Manual
HF SDR 4000 Series	User Manual
PRC-4090	Operating And Installation Manual