Select
C
to set up the serial port and also select the Baud rate of the
transmission. Command E is included to allow the invocation of an
external text editor to view and manipulate received text. As a default it
is assumed that a copy of the DOS editor (EDIT.COM)
resides
in
the
WEATHER directory. To change the default path simply edit the string in
file EDIT.PTH in the WEATHER directory.
Press
S
to start reception. Tune the receiver to the desired station and
press H. This will display a spectrum of the received signal. Tune the
clarify control until two distinct peaks are received. (This corresponds to
the upper and lower frequency tones of the signal). Using the
+
keys move the red line until
it
is central between the peaks. Press H again
to return to the display page. (Some stations transmit
in
invert mode. To
change the logic sense press key
I).
Most marine stations transmit at 50baud, news agencies transmit on either
50 or 75 baud.
The German weatherservice in Hamburg transmit comprehensive weather
forecasts on the following frequencies:
4583
khz, 7646 khz and
101
01 khz.
ADMIRALTY CHART AGENTS
The book
"
Admiralty list of radio signals volume three
"
which is a
comprehensive guide to Radio weather services is available from:
Kelvin Hughes Captain O.M. Watts
145 Minories
7
Dover Street
London EC3 1NH
Piccadilly
Tal: 0207 709 9076 London
Tel: 0207 493 4633
16
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