I checked the RF levels at the LSC LO distribution box, with the agilent scope and a handful of couplers. This was all done with the Marconi at +13dBm. 

I only checked the channels that are currently in use, since the analyzer only measures 3 channels at a time, and rewiring involves walking back and forth to the IOO rack to make sure unpowered amps aren't driven, and I was getting hungry. 

For the most part, the LO levels coming into the LSC demod boards are all around +1.5dBm (i.e. I measured around -18.0dBm out of the ZFDC-20-5 coupler, which has a nominal 19.5dB coupling factor)

The inputs piped over from the IOO rack, labeled as "+6dBm" were found to be 4.7dBm and 2.9dBm for 11Mhz and 55MHz, respectively. 

The 2F signals were generally about 40dB lower, with two exceptions:

• REFL165's ~332MHz signal was around -18dBc
• POP22 had many more visible harmonics than any other LO signal
  • 11MHz: -32 dBc
  • 33MHz: -32 dBc
  • 44Mhz: -15dBc 

Here are the raw numbers I measured out of the couplers, all in dBm:

• 11MHz in: -14.8
• 55MHz in: -16.6
• POX11:    -18.7
• POY11:    -18.0
• REFL11:   -18.0
• REFL33:   -18.3
• POP110:   -17.9
• AS110:    -18.1
• POP22:    -19.9
• REFL165:  -18.5
• AS55:     -18.6
• POP55:    -18.8 (this port is used as the REFL55 LO)