Agilent: 4150 MHz (changed from standard 4100 MHz to avoid forbidden LO range at 560-592 MHz).
LO (SML01): 528 MHz.
Coherence observed at 831.5 MHz.
DAS profile: VSOP_HO.PRO.
Recording to ATNFV016B.
Quad hybrid tuned to 355 steps from inner limit. Tone isolation only ~10 dB. Could not achieve better than this. No obvious issues (e.g. difficulty matching amplitudes pre-tuning) present.
From UT 14:00-21:00 SMY02 was accidentally left on and connected to the tone port, producing a tone 837 MHz at a level of -21 dB. Unlikely to be detectable at this level?