[time-nuts] TNS-BUF update

[John Ackermann. N8UR]

Yes, this is important (and I think it's mentioned in the TNS-BUF manual).  I had nasty spurs from an overhead florescent light in one test run until I put black tape over the LEDs.

On Aug 19, 2018, 4:38 AM, at 4:38 AM, Poul-Henning Kamp <phk at phk.freebsd.dk> wrote:
>--------
>In message <1818735266.3837388.1534666949194 at webmail.xtra.co.nz>, Bruce
>Griffit
>hs writes:
>
>>It exploits the fact that for a RED LED at least the difference
>>between the LED forward voltage and the transistor Vbe is ~ 1V and
>>has a fairly low tempco and has low noise (at  least for RED LEDs).
>
>... in darkness.
>
>When using LEDs this sort of way, they should always be totally
>shielded from all external light.
>
>-- 
>Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
>phk at FreeBSD.ORG         | TCP/IP since RFC 956
>FreeBSD committer       | BSD since 4.3-tahoe    
>Never attribute to malice what can adequately be explained by
>incompetence.
>
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