Esa Heikkinen wrote: > Hi Bruce, > > >> White emitter follower circuit attached. >> > > Here are the results. First, the circuit draws 33.3 mA at 12 vols. And > it's gain is 1:1 as expected with emitter follower - checked that with > RF generator as an input just to make sure that I built it correct. > > With HP10544A the output level is below +8 dBm: > http://www.amigazone.fi/files/gpsdo/544-10.png > (with 2 meters of RG174 and SMA-connectors between the circuit and SA) > > Now the harmonics look like this: > http://www.amigazone.fi/files/gpsdo/544-11.png > > And 2nd harmonic level: > http://www.amigazone.fi/files/gpsdo/544-12.png > > So the spec told that 2nd harmonic should be more than 25 dB down, it is > just in spec... > > So the final result looks that the 10544A is OK but it really has this > kind of output spectrum? > > Esa
Try increasing C2 and C8 in the white emitter follower circuit schematic to 100nF. Bruce _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.