2.2cm and 2.5cm primary focus receiver (12.1-12.25 and 12.9-13.6 GHz)
This is a 2-channel system used for spectroscopy. The 2.5cm part is realized by a new filter. The calibration parameters are still somewhat uncertain (about 10%). The lower part of the band at 12.1 GHz is affected by RFI from TV satellites which might also explain the higher Tsys.

Frequency [GHz] Channel Polarisation Tcal [K] Tsys [K] Sensitivity [K/Jy] SEFD [Jy] Aperture Eff. [%] TMB/S [K/Jy] Main Beam Eff. [%] FWHM [arcsec] Last update
12.10 A LCP 6.5 128 1.4 93 48 1.9 71 65.0 Dec 2009
12.10 A RCP 5.6 210 1.4 155 48 1.9 70 65.0 Dec 2009
12.18 A LCP 5.2 79 1.4 57 47 1.9 75 65.0 Dec 2009
12.18 A RCP 4.5 102 1.4 78 47 1.9 71 65.0 Dec 2009
13.09 A LCP 2.0 64 1.45 44 51 1.9 78 62.0 Aug 2009
13.09 B RCP 2.0 65 1.45 45 51 1.9 78 62.0 Aug 2009
13.39 A LCP 1.8 61 1.4 42 50 1.9 74 59.3 Sep 2005
13.39 B RCP 2.1 63 1.4 44 50 1.9 74 59.3 Sep 2005

normalized Gain curve     (G = A0 + A1·Elv + A2·Elv2) Observed in
A0 = 0.9644     A1 = 2.1838E-03      A2 = -3.3018E-05  Dec 2009

Comments:

  • The values across the band and for LCP and RCP do not differ significantly in the 2.2cm band.