Fact Sheet for RxB3i and the 345 GHz Band

• Single channel SIS receiver operating in DSB mode.
• Frequency coverage 300 to 380 GHz.
• Predicted zenith system temperatures at 345 GHz. The CSO tau meter gives the zenith opacity at 225 GHz (t_225).

  	t_225<0.05	0.05<t_225<0.1	0.1<t_225<0.15	t_225<0.25
  Tsys	<600	600-800	800-1000	<1600

• Efficiencies

  eta_beam	0.60 +/- 0.02 (Jupiter) 0.59 +/- 0.03 (Mars)
  eta_l	0.91 +/- 0.02
  eta_fss	0.7 +/- 0.1
  eta_A	0.41 +/- 0.05
  HPBW (arcsec)	14.3 * (340.0 / f[GHz]) +/- 0.5

• The present values have applied since May, 1996.

Next revision before Feburary 1, 1997.

Updated: 3 January 2000 (HEM)