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GB3SEE frequency stability. 


Drift reaches 25Hz/minute


Nominal Tx Frequency 10368.839 during this plot.

Maximum frequency measured to date, 10368.861 MHz, minimum 10368.838 MHz


Bold vertical lines are 1 minute intervals, dotted, 30secs.

Horizontals are 50Hz  divisions.

Scales to bottom and rh side of graph.