[Lowfer] WE2XGR/2 frequency & sampling rate cal signal test

[jrusgrove at comcast.net]

Thanks to John, Dex, Garry, Lloyd and Todd for the reports. It would appear that where the signal is 
received with adequate strength it should make a good sound card calibration reference ... pretty 
much as expected. I'd estimate the average accuracy to be 1 - 2  mHz (milli Hertz) and probably 
better than that ... noting the ocassional outlier in the data. As seen locally, these anomolies may 
be caused by other computer routines disturbing the frequency measuring software.

Jay W1VD  WD2XNS  WE2XGR/2