[time-nuts] New to list

Mike Harpe mike at mikeharpe.com
Thu Nov 1 17:35:33 UTC 2012


Right. I know that. I should have said that I'm going to abandon the
CME-8000 solution in favor of BPSK assuming they actually implement
it.

Mike Harpe

On Thu, Nov 1, 2012 at 1:31 PM, Bob Camp <lists at rtty.us> wrote:
> Hi
>
> Based on a quick look - the CME8000 isn't going to be much of a help with
> the new modulation. It will do ok with the old AM format.
>
> Bob
>
> -----Original Message-----
> From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
> Behalf Of Mike Harpe
> Sent: Thursday, November 01, 2012 1:14 PM
> To: Discussion of precise time and frequency measurement
> Subject: Re: [time-nuts] New to list
>
> Hi!
>
> At this point I'm mostly just trying to learn about the new signal. I
> play around with microcontrollers and have always wanted to build a
> WWVB clock. I spent a good amount of time with the CME-8000 board
> before getting frustrated with it and putting it aside for awhile. I
> found out about the BPSK experiment when I was looking around for help
> with the CME-8000 and I figured that would be the way to go now.
>
> Mike Harpe
>
> On Thu, Nov 1, 2012 at 1:08 PM, paul swed <paulswedb at gmail.com> wrote:
>> Mike
>> Welcome to the list. There have been numbers of tests since March.
>> Ultimately a more detailed specification was released thats been helpful
> in
>> understanding the new modulation.
>> In various threads I have mentioned what I have been doing. At the moment
>> modifying a spectracom 8163 seems to be a way to allow other rcvrs to
> work.
>> Not at all optimum or even close. But at least seems to have worked.
>> I am semi familiar with the chips and they are a complete rcvr. But really
>> do not allow direct access to the signals easily. Either you grab it past
>> the 60Khz crystal or at the output of the diode detector by removing the
>> LPF cap. Then you have to amplify detect and feed that back for AGC.
>> Something that can be done. I have not had time.
>> So a question for you is what are you attempting to do?
>> Regards
>> Paul
>> WB8TSL
>>
>> On Thu, Nov 1, 2012 at 12:43 PM, Mike Harpe <mike at mikeharpe.com> wrote:
>>
>>> Sorry if this is an FAQ...
>>>
>>> Has anything else happened with the WWVB BPSK change since the test in
>>> March?
>>>
>>> Also, I would love to correspond with anyone who has worked with the
>>> C-MAX CME-8000 boards.
>>>
>>> Thanks! I'm looking forward to participating.
>>>
>>> Mike Harpe, N4PLE
>>> Sellersburg, IN USA
>>>
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