https://docs.google.com/presentation/d/1s2J_O7M0ApuCUsiPf15XjtuopuXeBWspJRAa_DRgvwU

Auger Test Setup Calibration
----------------------------

The variable attenuator after the antenna is used to set the noise floor into the receivers for the GNSS + jamming port.
With the spectrum analyser resolution B/W set to 300kHz, the attenuators are tunes so that the noise floor is -68dBm.
(There's often a 'bump' in the noise at 1590MHz so the noise power was measured at ~1587MHz.)

With the signal generator output power set to 0dBm, the spectrum analyser was used to measure the CW power at 1580.42MHz.
  DAT64L [dB] | Power [dBm]
  ------------+------------
     25       |    -20
     20       |    -15
     15       |    -10
     10       |     -5
      5       |      0
      0       |      5


Comparison to the Original Setup
--------------------------------

The original setup also was calibrated to the same noise power, -68dBm, into the receiver.
The maximum CW power was 14dBm (signal generator setting)
                        - 5dB (loss in DAT64L)
                        - 7dB (loss in two-way combiner followed by two-way splitter)
                        = 2dBm
The new set-up is therefore ~3dB high in J/N (& J/S) than the original set-up.