Hi All, Just a few words on the different types of FE5680.
The types requiring 5v on one of the pins only have a simple L C filter to "sine" up the square wave and are only suitable for locking digital devices. The variants with the SMA or single 15v supply have a multipole band pass filter for 10 Mhz and produce a far cleaner output suitable for locking LO's for radios.
Looking at the output of the +5v types on an oscilloscope you will quite clearly see that the sine wave is not quite right. Pluggin them into a spectrum analyzer will show harmonics stretching out 100Mhz+ from the fundamental.
If your intent is to use one of these as a basis for locking LO's for radio work make sure you use a clean one :)
regards Tim -- VK2XTT :: QF56if :: BMARC :: WIA :: AMSAT-VK :: AMSAT _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
