[hpsdr] GPSDO

[Dick Faust]

Glenn

Do you have an actual Ebay link?

Thanks

Dick  K9IVB


On 3/8/2017 5:30 PM, MICHAEL ST ANGELO wrote:
> ***** High Performance Software Defined Radio Discussion List *****
>
> Does the Navman modules have a 10kHZ output? Most of the new ones I see on ebay have only a 1PPS output?
>
> What is the model number?
>
> Mike N2MS
>
>
>> On March 8, 2017 at 6:56 PM K4KV <k4kv at k4kv.com> wrote:
>>
>>
>> ***** High Performance Software Defined Radio Discussion List *****
>>
>> Hello,
>>
>> I wanted to report back that those $12 Navman GPS modules off of Ebay
>> work fine.  Using
>>
>> VisualGPSView, they obtained fixes after several minutes.
>>
>> My board would not lock onto the signal on either of these boards, but I
>> do not believe it
>>
>> has anything to do with the GPS modules.  I can see rapid changes in the
>> 10Mhz signal to the Hermes
>>
>> as if the loop filter values are not correct.  I had long since taken
>> the wires off the board so that I
>>
>> could monitor the loop filter with the scope.  These modules model # end
>> with 041 while my original ends with 021.
>>
>>
>> I spent some time monitoring the 10Mhz accuracy on WWV using the
>> Spectrum view program.  Even though
>>
>> the VisualGPSView said I had a GPS Fix, the clock was still not
>> accurate.  It took some minutes more, after the
>>
>> first 'fix', then all of a sudden I saw the altitude, lat and long, move
>> a bit to a number I know is right.  Then
>>
>> WWV was correct, with the tones within 1 Hz.
>>
>> 73
>>
>> Glen K4KV
>>
>>
>>
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