[time-nuts] Frequency doubler 5/10 and distribution amplifier for Lucent KS-24361

Bob Camp kb8tq at n1k.org
Sat Jan 17 14:21:18 EST 2015


Based on the phase noise on the 15 MHz output, I would *guess* that the 5 MHz OCXO has a floor in the vicinity of -160 dbc / Hz. That would be correct per the MTI spec sheet. It also would make sense based on your phase noise plots. Close in ( around 200 Hz) your multiplier and amp are doing a better job than the stock 15 MHz tripler and buffer. They have a lot of buffer amps in their 15 MHz chain, so who knows where the issue is in the stock design.


> On Jan 17, 2015, at 7:24 AM, Gerhard Hoffmann <dk4xp at arcor.de> wrote:
> Am 03.01.2015 um 02:43 schrieb Gerhard Hoffmann:
>> over the Christmas season, I have designed and built a frequency doubler from 5 to 10 MHz and a distribution amplifier for the Lucent KS-24361. A preliminary writeup is under
>> < http://www.hoffmann-hochfrequenz.de/downloads/DoubDist.pdf >
> I have updated the text with a phase noise measurement and some clarifications.
> regards, Gerhard
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