[R-390] R-1247 Nasa Receiver info

[ToddRoberts2001 at aol.com]

I wonder if anyone has ever tried to run an  R-1247
using 3 separate modern DDS oscillators? It might be
easier and  more cost-effective than trying to find the original 
matching Manson Labs  synthesizer unit. The R-1247 is rare
enough but the original synthesizer is  probably unobtainium
these days.

The reason I ask is because I do have  an R-1247 but have 
pretty much given up on ever being able to find the  
Manson Labs synthesizer unit, much less a good working unit.
Plus  I  have read the original
synthesizer was a bear to keep running and the  specs
weren't all that great on it as far as phase-noise goes.

If  someone  knew the drive level needed it shouldn't be too
hard to get the  R-1247 up and running as it was intended with
a couple of modern,  low-phase-noise DDS oscillators.

73 - Todd WD4NGG