511
No.
G. M. T.
H. K. St. Time.
Nature of Transmission.
Station and wavelength.
8
1200
2000
9
1200
2000
Synoptic in International Code of 2 observations
p.m. from land and ship stations. General inference and dis- trict forecast as below.
General inference from 2 p.m. observations and forecasts, &c., as No. 5.
General inference and forecast for district C from 2 p.m. observations.
GYP on 2655 and GZO on 35.59 metres.
VPS as for No. 1.
10
1200
2000
ZBW on 355 m.
telephony.
11
1255-1300 2055-2100
Time Signals as at 9.55 a.m.
VPS as for No. 1.
When available upper air data from land and ship stations will be included in the synoptic and will be in the following form :-
Pilots Ships Pilots
where
PQLLL
IIIGG INGG
hddvv
hddvv
III Index number of station...
GG G.M.T.
hHeight, in metres, (see table)...
dd x 10 Direction of wind, in degrees...
vv Velocity in wind, in kilometres p. hour
PDay of week, Q-Octant of Globe...
LLL Latitude, degrees and tenths...
lll-Longitude, degrees (two figures) and tenths...
Code figure.
Height.
1
200 m.
0104 10
500
1000
1500
2000
30 00 ~ 3
6
3000
7
4000
5000
6000
2. In addition storm warnings will be broadcast by VPS on 600 metres and 36 metres, and by ZBW on 355 metres telephony upon receipt. They will be repeated as follows:-
ZBW (355 m. telephony). At the two subsequent hours.
VPS (600 m. and 36 m. telegraphy). At 18 minutes past each of the sub-
sequent two hours.
When Hong Kong is definitely threatened with cyclonic gales, extra warnings will be broadcast as frequently as possible (usually at two-hourly intervals) by the Director of the Royal Observatory via ZBW on 355 metres telephony.
3. The Time Signals will be preceded by the following warning signals from VPS, 2 minutes before the emission of the Time Signal ::
CQ DE VPS HK TIME
WAIT
and, during the 1300 G.M.T. emission, will be duplicated by 3 white lights (vertical) in the storm signal mast, the lights being extinguished each second according to the radio programme.
No comments yet.
Private notes are available after approval.