[time-nuts] wtd: WWVB info
kb8tq at n1k.org
Sun Aug 9 19:40:49 EDT 2015
> On Aug 9, 2015, at 6:56 PM, Donald <donvukovic at gmail.com> wrote:
> On 8/9/2015 2:16 PM, Bob Camp wrote:
>> Ok, that’s a 20 year old IC. When it talks about doing WWVB, it’s talking about
>> the AM modulation format. It’s not talking about the new phase modulation approach.
>> These are the chips that probably will disappear completely once the chips for the newer format show up.
> This has been discussed on time-nuts before:
> A few months ago I too contacted Everset about getting some chips.
> So over a year has passed and the new chips are not available.
> Which is why asked for a "simple receiver",
> Another discussion talks about the patent Everset has, I do not think others will be joining the party.
> The chip I chose is one of many 20 year old chips.
> Except the Everset chip, there have been no new chips developed in over 20 years.
I have a watch on my wrist and a clock on the wall. Both synch to WWVB. They use chips to do this.
The silicon in the watch came out about 4 years ago. The chip in the clock is about 7 years old.
The watch chip is now obsolete and has been replaced by a newer one. I have not taken a hammer
to a newer clock to see what they are now using. New chips for WWVB are very much being actively
designed all the time. They integrate a *lot* of functions in the chip beyond a simple receiver.
> As they say in the old country, "Oh well"
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