[time-nuts] WWVB New Modulation five cent demodulator / carrier regenerator ?

[paul swed]

I was giving it 1000uv. Thats why I say it needs a lot.

On Mon, Oct 22, 2012 at 9:00 PM, Tom Miller <tmiller at skylinenet.net> wrote:

>
> ----- Original Message ----- From: "paul swed" <paulswedb at gmail.com>
> To: "Discussion of precise time and frequency measurement" <
> time-nuts at febo.com>
> Sent: Monday, October 22, 2012 8:35 PM
>
> Subject: Re: [time-nuts] WWVB New Modulation five cent demodulator /
> carrier regenerator ?
>
>
> To switch correctly at the zero point I sample the plus of the secondary
> with a LM339 comparator (only using 1 section) and feed that to a SXB micro
> running at 40 Mhz. Detect the zero and switch if I want. The micro programs
> in basic and screams along. So I can flip at any rate or create patterns as
> easily as I can think them up. Its seriously dumb, simple, and stupid. But
> it lets me run tests without waiting for wwvb. I do attenuate the output
> signal to about 60 uv. Generally what I see on the east coast during the
> day.
> ==============================**==
>
> Hi Paul,
>
> Reading the spec, I think the chip wants to see about 500 UV RMS. Is that
> correct?
>
> At three cents each, it sure would be nice to find another use for it.
>
>
>
>
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