[time-nuts] Thunderbolt Harmonics

Bob Camp kb8tq at n1k.org
Wed Jan 18 06:59:39 EST 2017


If you look at the FCC transmitter regs, -60 dbc is “ok” for many transmitters. 


> On Jan 17, 2017, at 9:40 PM, Rhys D <heyrhys at gmail.com> wrote:
> Hi all,
> Before I start, let me say I'm rather a newbie at this sort of stuff so
> please be gentle.
> I was looking at the output of my Trimble Thunderbolt GPSDO and was rather
> surprised to see really "loud" harmonics in there. ~ 60dB down from the
> 10Mhz signal.
> Can anyone here shed some light on what I am seeing here?
> Surely this isn't what it is supposed to look like? Should I be trying to
> filter these before going to my distribution amplifier?
> Thanks for any light you can shed.
> R
> ​
> <10MhzRef.png>_______________________________________________
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