[time-nuts] WWVB Dephaser Question

[Chris Howard]

I received a good pointer about doing the BPSK implementation
but have just not gotten it done.

Chris Howard



On 10/12/20 11:02 AM, jimlux wrote:
> On 10/12/20 7:40 AM, paul swed wrote:
>> John really appreciate the pointer. Though it doesn't help wwvb BPSK 
>> its a
>> really good intro to SDR and DSP super simple. A good way to get your 
>> feet
>> wet. Hmmm is there a parts order soon? :-)
>> Regards
>> Paul
>> WB8TSL
>
>
> And the teensy has plenty of space and speed to implement a PLL for 
> doing BPSK demodulation.
>
>
>>
>> On Mon, Oct 12, 2020 at 10:33 AM Bob kb8tq <kb8tq at n1k.org> wrote:
>>
>>> Hi
>>>
>>> The “ideal” antenna solenoid would be a bit longer ( say 2 X to 5X ).
>>> The turns should be spaced apart by a few percent of the length.
>>> ( so turns over 30 or so … not so much …).
>>>
>>> How much better is “ideal” compared to “just get it done?”. At least
>>> from the stories that are told, it is significant. Since all these 
>>> antennas
>>> are very small (so non-ideal) it’s a bit of a snail race.
>>>
>>> Bob
>>>
>>>> On Oct 12, 2020, at 3:42 AM, John C. Westmoreland, P.E. <
>>> john at westmorelandengineering.com> wrote:
>>>>
>>>> Paul,
>>>>
>>>> Doesn't the post by Chris Howard above appear to be a good/great 
>>>> starting
>>>> point?
>>>> Seems like that approach could be extended.
>>>>
>>>> https://github.com/chris-elfpen/Teensy4WWVBsdr
>>>>
>>>> 73's,
>>>> John
>>>> AJ6BC
>>>>
>>>>
>
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