[time-nuts] WWVB Response

J. Forster jfor at quikus.com
Thu Sep 27 18:48:15 UTC 2012


In this area, you cannot get the BW down enough for a usable signal
without killing the time response to the BPSK transitions.

YMMV,

-John

================


> Hi
>
> I suspect the bandwidth is > 1 Hz, since they want to get the data bits to
> reliably flip within a second. I'm sure the bandwidth is limited for a
> number of reasons.
>
> Bob
>
> -----Original Message-----
> From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
> Behalf Of paul swed
> Sent: Thursday, September 27, 2012 1:57 PM
> To: Discussion of precise time and frequency measurement
> Subject: Re: [time-nuts] WWVB Response
>
> less then 10 hz and more like 1
>
> On Thu, Sep 27, 2012 at 1:15 PM, Hal Murray <hmurray at megapathdsl.net>
> wrote:
>
>>
>> jfor at quikus.com said:
>> > The AM just makes the situation in low S/N areas worse. The BPSK wipes
>> out
>> > the possibility of any very narrow band prefiltering, because of
>> filter
>> time
>> > response.
>>
>> What is the bandwidth of the transmitted signal?
>>
>>
>> --
>> These are my opinions.  I hate spam.
>>
>>
>>
>>
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