stabilock/wavetek si4015 ref freq

[ME]

Does anyone know how i can use my 10MHZ gpsdo as the freq ref on this? , If i remember the manual says it needs some sort of addaptor? that due to its age is made of pure unobtainium!.

[RFDx]

The external synchronisation module was optional. It plugs into the back and contains a small PLL with a 74HC4046 that locks the internal 20MHz TCXO to an external 10MHz reference.

You could copy the original circuit and make your own module or double the frequency of your reference and use that instead of the internal TCXO.