[time-nuts] Lucent KS-24361 10 Mhz out success.
doug at dougronald.com
Wed Dec 3 19:36:30 EST 2014
I may have missed this info in a previous post, but I am interested in tapping off the 5 MHz signal. I have my REF-1 apart, but don't have it powered. I will buffer the signal, and suspect the 5 MHz is available right around Q205, but it might be up around Q204 or Q203. Could someone advise me as to exactly where to pick off a nice 5 MHz sine wave?
From: time-nuts [mailto:time-nuts-bounces at febo.com] On Behalf Of paul swed
Sent: Wednesday, December 03, 2014 3:05 PM
Subject: [time-nuts] Lucent KS-24361 10 Mhz out success.
Have successfully tapped into the clean 10 MHz of the the Lucent and using a EL2020 50 Mhz current opamp have a very nice 10 Mhz sine wave out. Any spurs are down at least 43 db. Close in at 4Khz total span or 500 Hz/div I don't see anything down to at least 65 db. Thats the best detail the HP 8568B will allow.
To get the signal out of the Lucent I sliced the 15 Mhz trace and injected the 10 Mhz into the SMA output connector.
I am sure there are many other amplifiers and methods that could be used but this ones working well and can drive some real coax lengths.
Now the really hard part. Mounting it and the power supply into a rack panel.
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