[hpsdr] Hermes/Anan 10 Drift?

[Brian Lloyd]

On Thu, Mar 14, 2013 at 4:25 PM, Tokio Endo <tokio.endo2 at i.softbank.jp>wrote:

> Hi All,
>
> I posted R141 change needed to 50 ohm several weeks ago on this reflector.
> After the change the external clock seems to work properly. But I'm still
> concerned about the wave shape of the two transisor circuit output. It is a
> triangular wave while the internal clock has nearly a rectangular shape.
> The circuit of Hermes, which should produce a rectanguler wave from an
> external clock sine wave is identical to Excaliber.
> Any comments appreciated.
>

I have been using my Hermes board for some time now after changing R141 to
50Ω. It seems to work just fine. I have done some long-term measurement of
WWV and CHU and frequency seems quite stable using my LPRO-101 reference.

-- 
Brian Lloyd, WB6RQN/J79BPL
3191 Western Dr.
Cameron Park, CA 95682
brian at lloyd.com
+1.767.617.1365 (Dominica)
+1.916.877.5067 (USA)
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