As mentioned on my test equipment page, the use of an HP Z3801A 10 MHz reference can give phenomenal frequency stability when it drives a device that replaces the transverter oscillator, especially at 10 GHz.  The oscillator used here is made by JWM Engineering in California.  The model 5112 replaces the DB6NT transverter oscillator with slight modification and the model 1152 replaces the oscillator in the Down East microwave transverter.  Once the output from the Z3801A is adjusted for proper level to the JWM unit, phase noise is reduced considerably.  The Z3801A can be operated in the field in "holdover" mode which is still extremely accurate and stable.   JWM Engineering has since introduced new oscillators with better phase noise reduction and a higher output power.  They also have a new distribution amplifier that makes it easier to reference all (6) of your test equipment and ham radio gear.  Good quality RG6 cable is used to distribute the 10 MHz on the work bench and upstairs in nthe shack.  The most difficult part while roving is having the 48 volts available.  Most hams use 4 each 12 volt lawn-mower type lead acid batteries which will last long enough for a weekend roving trip.  Using this unit with the JWM oscillators can give accuracy unheard of even in some professional installations. It is possible to operate digital modes on the 10 GHz band such as PSK31 if desired, especially in fixed operations.  Eventually we will be the Flex Radio 5000A locked to a 10 MHz reference along with the frequency locked DB6NT transverter and 3 watt amplifier on 10.3681 GHz.  Will be operating rain and snow scatter using a dish antenna mounted remotely in the back yard.
With a JWM unit feeding a beacon transmitter, it would be a tremendous asset to microwave operators, being able to adjust their equipment to it's frequency.  The newer JWM units can act as a beacon as is since they have a +17 Db output.