Parts list Source Integrated Circuits U1 MAR-3 MMIC Downeast, MiniCircuits Lab U2 SBL-11 Mixer MiniCircuits Lab U3 MC12179D Phase Lock Loop/Oscillator/Divide by 256 Newark Electronics U4 POS-2000 VCO MiniCircuits Lab U5 LF353 dual JFET Opamp Digikay U6 LM78L05 5 volt regulator Digikey, Downeast U7 LM317T variable voltage regulator Digikey Capacitors C1 1.0 ufd leaded non-polarized capacitor C2 .3-3.5 pf small variable capacitor C3,4 27 pf silver mica C5 1 pf silver mica C6-17 1000 pf chip capacitor Downeast C18-20 6.8 ufd 16 VDC electrolytic chip capacitor Digikey (PCE3171CT) Resistors R1 100-ohm ½ watt carbon composition leaded R2 47K chip resistor Downeast R3 5K chip resistor Downeast R4 10K chip resistor Downeast R5 200 ohm chip capacitor Downeast R6 240 ohm leaded resistor R7 1300 ohm leaded resistor R8 250 ohm chip resistor Downeast R9 10 ohm chip resistor Downeast Miscellaneous X1 Crystal, 6.068359 MHz, International Crystal F.O. 8030953, GP-26C, catalog # 004331612 J1 female SMA connector – see text J2 female BNC connector or can wire coax directly to trace on edge of board L1 .22 uhy molded choke Downeast