kb8tq at n1k.org said: > A $25 Ref-0 with the same GPS and a (now) documented MCU will do the same > thing as any other GPSDO. Does anybody know if the Ref-0 expects a clean PPS from the Ref-1 OCXO, or is it happy with what comes out of a typical GPS unit? -- These are my opinions. I hate spam.