[Lowfer] ZL6QH beacon, last night of testing

[Vernall]

ZL6QH will carry out LF beacon transmission during ZL hours of darkness =
on Sunday 29 December.  The same format as previous beacon tests will be =
used, with 120 second dot length, 0.42 Hz FSK, with transmission code =
repeated QQQQQ.... with each Q coded as [hi hi lo hi off]:

hi =3D 137.7890 kHz
lo =3D 137.7886 kHz

Timing will be such that the start of a Q coincides with the hour.  It =
takes 10 minutes per Q, so there are six Qs per hour.

The DDS exciter has a frequency shift of 0.42 Hz, and the tones should =
be within 0.1 Hz of the declared frequencies.  If the SSB backup exciter =
needs to be called upon, the frequency shift would be 0.4 Hz.

The ZL hours of darkness in late December are nominally 0750 UTC =
(sunset) till 1655 UTC (sunrise).  The beacon will be transmitting from =
before sunset till after sunrise, and close down during daytime.=20

Bob ZL2CA


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