LF: RN6BN O with 20 second dot

["Vernall" <vernall@xtra.co.nz>]

Sam RN6BN,

Copy varied from O to M to T over your three hour transmission.  Frequency
shift was far less than previous tests, only 0.02 Hz shift.  See attached
the last N received at ZL sunrise (just before 1900 UTC), the speed was set
to 20 second dot length, and the frequency shift can not be detected on the
vertical scale, however it shows that O copy was potentially possible at 20
second dot length.  I could not detect any carrier by ear (noise floor was
QRN).

Next I will send a pic of the start of your test, which shows O copy with
120 second dot length.

73, Bob ZL2CA