OK, compreso l'ultimo discorso sul local oscillator stability, questa la mia scelta finale (credo di essere sul top):
SMW Q-PLL Multiband type E F ±10 kHz (T) (Part number 126540)
power requirements: 11.15 V - 20 V
noise figure: 0.8 dB
input waveguide: WR-75
input frequency: 10.70 GHz - 12.75 GHz
L.O. 1 (band 1): 9.75 GHz (no tone)
L.O. 2 (band 2): 10.60 GHz (tone 22 KHz)
L.O. stability (internal reference): +/- 10 KHz (+/- 1 ppm)
conversion gain: 58 dB
Norsat 3420F
power requirements: 12 V - 24 V
noise temperature: 20 K
input waveguide: CPR229G
input frequency: 3.40 GHz - 4.20 GHz
L.O.: 5.15 GHz
L.O. stability (internal reference): +/- 2 KHz (+/- 0.4 ppm)
conversion gain: 62 dB