Richard --
On 7/6/2017 3:48 PM, Richard Lamont wrote:
Is it a good idea to use AM broadcast transmitters as a frequency
standard when the regulatory tolerance (ITU and many countries) for such
transmitters is +/- 10 Hz? Is that good enough for the purpose?
73,
Richard G4DYA
As described here
http://www.physics.princeton.edu/pulsar/K1JT/FMT_User.pdf
my experience has been that (at least in NA) the carriers of big-city AM
broadcast stations are "on frequency" to within better than 1 Hz.
It's always best to over-determine your fitted calibration line by using
more independent calibrators than the minimum necessary. Then you can
reliably identify outliers, and remove them from your analysis.
-- 73, Joe, K1JT
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