[time-nuts] Thunderbolt power requirements

[Brian Lloyd]

On Fri, Jan 31, 2020 at 12:17 PM Bob kb8tq <kb8tq at n1k.org> wrote:

> Hi
>
> The better you regulate the 12V, the better the TBolt will function.
> The OCXO will be very unhappy outside a +/- 0.5V region. It really
> wants something well regulated (like at the couple of millivolts level).
>

That is the info I was looking for. My T-bolt works very well but all three
supplies are regulated. So I have to come up with regulated +12V and -12V.

Depending on exactly what era OCXO your TBolt has in it and how well
> it is still functioning, ppb level changes for a few percent delta supply
> are
> not unexpected.
>

My T-bolt does seem to be working well, at least when compared to the Rb
and my TCXO-based GPSDO. All three seem to be quite consistent. 10MHz from
the NTP server is not as stable as the other 3. The 1pps from the NTP
server wanders +/- 50ns from the 1pps from the T-bolt. All are running from
the same GPS antenna outdoors with a pretty much unobstructed view of the
sky. (I have some trees and the peak of my roof up to about 20 degrees
above the horizon to the S.)

Thanks Bob.

-- 



Brian Lloyd
706 Flightline
Spring Branch, TX 78070
brian at lloyd.aero
+1.210.802-8FLY (1.210.802-8359)