[ntp:questions] Re: WWV audio driver, FreeBSD, Can't seem to get it going

David L. Mills mills at udel.edu
Mon May 23 05:25:27 UTC 2005


It looks like the program is having a really hard time trying to find 
the 5-ms matched-filter tick from the WWV/H station. This is kinda 
chaotic when the SNR is very low. There is not much that can be done 
about it, as the synch acquistion is fragile. Let it run for awhile; 
usually it does latch on to the signal, increase the averaging time and 
get really well.

Dave

wa6zvp at gmail.com wrote:
> * Update.
> 
> I found another sound card .  I grabbed the latest -dev- train code as
> well.
> So now its ntp-dev-4.2.0a-20050518 on freeBSD 5.4-release.
> 
> Well, things are starting to happen.  Still hasn't fully locked though,
> a recent chunk of clockstats is appended at the bottom.
> 
> Lots of wwv1 diags, some wwv2, and an occasional wwv8.  I also am
> trying
> the output of a different receiver to make sure the audio is OK.
> Although
> not in this sample of clockstats, I've seen wwv3/4 and even 5 messages.
> Just never quite gets to actually declaring sync.
> 
> Again, any more ideas on where to go from here would be appreciated.
> 
>          Roger
> 
> 53513 17.035 127.127.36.0 wwv1 0100  3765  25.7  7783     1    3    0
> 53513 18.035 127.127.36.0 wwv1 0100  3988  27.4  7783     0    4    1
> 53513 19.035 127.127.36.0 wwv1 0100  4122  27.9  7784     1    5    0
> 53513 20.034 127.127.36.0 wwv1 0100  4290  28.2  7784     0    6    1
> 53513 21.034 127.127.36.0 wwv1 0100  4488  28.1  7785     1    7    0
> 53513 22.034 127.127.36.0 wwv1 0100  4634  28.5  7785     0    8    1
> 53513 22.034 127.127.36.0 wwv2 0100 4634 7783    1  0    8  964    0.00
> 53513 23.034 127.127.36.0 wwv1 0110  4750  28.7  7786     1    1    0
> 53513 24.034 127.127.36.0 wwv1 0110  4858  26.8  7787     1    2    0
> 53513 25.034 127.127.36.0 wwv1 0110  4388  25.7  7788     1    3    0
> 53513 26.034 127.127.36.0 wwv1 0110  4541  25.6  7788     0    4    1
> 53513 27.034 127.127.36.0 wwv1 0110  4665  26.1  7788     0    5    2
> 53513 28.034 127.127.36.0 wwv1 0110  4794  26.8  7789     1    6    0
> 53513 29.034 127.127.36.0 wwv1 0110  4228  25.6  7790     1    7    0
> 53513 30.034 127.127.36.0 wwv1 0110  4452  25.4  7790     0    8    1
> 53513 30.034 127.127.36.0 wwv2 0110 4452 7788    2  0    8    5   26.04
> 53513 31.034 127.127.36.0 wwv1 0110  4650  26.7  7791     1    1    0
> 53513 32.033 127.127.36.0 wwv1 0110  4824  27.3  7792     1    2    0
> 53513 33.033 127.127.36.0 wwv1 0110  4950  26.6  7792     0    3    1
> 53513 34.033 127.127.36.0 wwv1 0110  5101  28.5  7792     0    4    2
> 53513 35.033 127.127.36.0 wwv1 0110  5211  29.6  7793     1    5    0
> 53513 36.033 127.127.36.0 wwv1 0110  5322  31.3  7793     0    6    1
> 53513 37.033 127.127.36.0 wwv1 0110  5434  32.5  7794     1    7    0
> 53513 38.033 127.127.36.0 wwv1 0110  5514  33.7  7795     1    8    0
> 53513 38.033 127.127.36.0 wwv2 0110 5514 7792    2  0    8    4   46.88
> 53513 39.033 127.127.36.0 wwv1 0110  5584  34.2  7795     0    1    1
> 53513 40.057 127.127.36.0 wwv1 0110  4895  31.3  7795     0    2    2
> 53513 41.057 127.127.36.0 wwv1 0110  4291  29.5  7795     0    3    3
> 53513 42.057 127.127.36.0 wwv1 0110  3758  28.1  7795     0    4    4
> 53513 43.056 127.127.36.0 wwv1 0110  3299  26.4  7795     0    5    5
> 53513 44.056 127.127.36.0 wwv1 0110  3153  25.3  7795     0    6    6
> 53513 45.056 127.127.36.0 wwv1 0110  3542  26.7  7672  -123    7    0
> 53513 46.056 127.127.36.0 wwv1 0110  3896  28.0  7672     0    8    1
> 53513 46.056 127.127.36.0 wwv2 0110 3896 7795    6  1    8    3   62.50
> 53513 47.056 127.127.36.0 wwv1 0110  4180  29.3  7672     0    1    1
> 53513 48.056 127.127.36.0 wwv1 0110  4375  29.8  7672     0    2    2
> 53513 49.056 127.127.36.0 wwv1 0110  4553  29.7  7672     0    3    3
> 53513 50.056 127.127.36.0 wwv1 0110  4729  30.9  7673     1    4    0
> 53513 51.056 127.127.36.0 wwv1 0110  4940  31.4  7673     0    5    1
> 53513 52.056 127.127.36.0 wwv1 0110  5127  31.6  7673     0    6    2
> 53513 53.056 127.127.36.0 wwv1 0110  5161  32.4  7673     0    7    3
> 53513 54.056 127.127.36.0 wwv1 0110  5222  29.5  7673     0    8    4
> 53513 54.056 127.127.36.0 wwv2 0110 5222 7673    4  0    8 -122   62.50
> 53513 55.055 127.127.36.0 wwv1 0110  5335  30.9  7673     0    1    1
> 53513 56.055 127.127.36.0 wwv1 0110  5411  32.0  7674     1    2    0
> 53513 57.055 127.127.36.0 wwv1 0110  5440  31.9  7674     0    3    1
> 53513 58.055 127.127.36.0 wwv1 0110  5536  31.0  7674     0    4    2
> 53513 59.055 127.127.36.0 wwv1 0110  4864  30.7  7674     0    5    3
> 53513 60.055 127.127.36.0 wwv8 2 195 WV15 0   308  18.1     1 479674
> 7674 47930
> 1
> 53513 60.055 127.127.36.0 wwv8 2 195 WH15 0    95  13.6     0 167785
> 7674 16744
> 1
> 53513 120.098 127.127.36.0 wwv8 2 203 WV15 1  3133  33.5    22 479674
> 7675 4796
> 74
> 53513 120.098 127.127.36.0 wwv8 2 203 WH15 0   954  24.6     2 324942
> 7675 3249
> 42
> 53513 126.098 127.127.36.0 wwv1 0100  3231  37.9  7332  -342    1    0
> 53513 127.097 127.127.36.0 wwv1 0100  3401  37.1  7332     0    2    1
> 53513 128.097 127.127.36.0 wwv1 0100  3496  36.3  7333     1    3    0
> 53513 129.097 127.127.36.0 wwv1 0100  3708  36.2  7334     1    4    0
> 53513 130.097 127.127.36.0 wwv1 0100  3487  30.0  7334     0    5    1
> 53513 131.097 127.127.36.0 wwv1 0100  3811  27.7  7334     0    6    2
> 53513 132.097 127.127.36.0 wwv1 0100  4049  28.3  7334     0    7    3
> 53513 133.129 127.127.36.0 wwv1 0100  3547  27.7  7335     1    8    0
> 53513 133.129 127.127.36.0 wwv2 0100 3547 7334    3  0    8 -339
> 0.00
> 53513 134.129 127.127.36.0 wwv1 0110  3113  26.9  7335     0    1    1
> 53513 137.129 127.127.36.0 wwv1 0100  3007  24.7  7083  -252    1    0
> 53513 138.129 127.127.36.0 wwv1 0100  3329  26.6  7083     0    2    1
> 53513 139.128 127.127.36.0 wwv1 0100  3657  28.0  7084     1    3    0
> 53513 140.128 127.127.36.0 wwv1 0100  3958  29.3  7084     0    4    1
> 53513 141.128 127.127.36.0 wwv1 0100  3903  30.0  7085     1    5    0
> 53513 142.128 127.127.36.0 wwv1 0100  3958  31.2  7086     1    6    0
> 53513 143.128 127.127.36.0 wwv1 0100  4225  31.0  7086     0    7    1
> 53513 144.128 127.127.36.0 wwv1 0100  4514  31.2  7087     1    8    0
> 53513 144.128 127.127.36.0 wwv2 0100 4514 7083    1  0    8 -251
> 0.00
> 53513 145.128 127.127.36.0 wwv1 0110  4726  31.6  7087     0    1    1
> 53513 146.128 127.127.36.0 wwv1 0110  4896  32.2  7088     1    2    0
> 53513 147.128 127.127.36.0 wwv1 0110  5026  32.5  7089     1    3    0
> 53513 148.128 127.127.36.0 wwv1 0110  5143  32.4  7089     0    4    1
> 53513 149.128 127.127.36.0 wwv1 0110  4506  32.2  7090     1    5    0
> 53513 150.128 127.127.36.0 wwv1 0110  4708  33.1  7090     0    6    1
> 53513 151.127 127.127.36.0 wwv1 0110  4891  32.4  7091     1    7    0
> 53513 152.127 127.127.36.0 wwv1 0110  5028  32.4  7092     1    8    0
> 53513 152.127 127.127.36.0 wwv2 0110 5028 7087    1  0    8    4
> 20.83
> 53513 153.127 127.127.36.0 wwv1 0110  5108  32.3  7092     0    1    1
> 53513 154.127 127.127.36.0 wwv1 0110  5223  32.7  7093     1    2    0
> 53513 155.127 127.127.36.0 wwv1 0110  5354  33.3  7094     1    3    0
> 53513 156.127 127.127.36.0 wwv1 0110  5461  32.8  7094     0    4    1
> 53513 157.127 127.127.36.0 wwv1 0110  5514  33.0  7095     1    5    0
> 53513 158.127 127.127.36.0 wwv1 0110  5570  33.8  7095     0    6    1
> 53513 159.127 127.127.36.0 wwv1 0110  5646  33.8  7096     1    7    0
> 53513 160.127 127.127.36.0 wwv1 0110  5679  34.4  7096     0    8    1
> 53513 160.127 127.127.36.0 wwv2 0110 5679 7092    1  0    8    5
> 46.88
> 53513 161.127 127.127.36.0 wwv1 0110  5724  34.2  7097     1    1    0
> 53513 162.127 127.127.36.0 wwv1 0110  5784  34.2  7097     0    2    1
> 53513 163.126 127.127.36.0 wwv1 0110  5850  34.1  7097     0    3    2
> 53513 164.142 127.127.36.0 wwv1 0110  5129  28.3  7098     1    4    0
> 53513 165.142 127.127.36.0 wwv1 0110  4499  26.3  7098     0    5    1
> 53513 166.142 127.127.36.0 wwv1 0110  3943  24.5  7098     0    6    2
> 53513 167.142 127.127.36.0 wwv1 0110  3461  22.7  7098     0    7    3
> 53513 168.142 127.127.36.0 wwv1 0110  3122  31.5  7098     0    8    4
> 53513 168.142 127.127.36.0 wwv2 0110 3122 7098    4  0    8    6
> 78.12
> 53513 169.142 127.127.36.0 wwv1 0110  3524  33.2  6974  -124    1    0
> 53513 170.142 127.127.36.0 wwv1 0110  3881  34.7  6974     0    2    1
> 



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