Description
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For many years commercial vessels have received weather forecasts via
radioteletype (RTTY) from the German National Weather Agency (DWD). Whilst
a few intrepid yachtsmen have tuned into this excellent service, with a
general purpose HF receiver connected to a personal computer, results have
often been dissapointing.
Weatherman combiness a synthesised HF receiver, a powerful computer and
a high contrast display to form a complete, reliable, stand alone RTTY receiver.
Unlike Navtex, which is an international service for navigational and
meteorological warnings, weatherman is dedicated to receiving weather forecasts.
DWD operates on a 24 hour continuous schedule and broadcasts continually
on several frequencies simultaneously. This helps to cope with the radio
propagation and reception conditions which vary with time of day and the distance
from the transmitter.
The DWD service is free to yachtsmen but must not be used for commercial
purposes.
The daily schedule includes times of day, frequencies and areas of coverage.
The user can program Weatherman to record information only from areas of
interset. The memory is able to store several thousand lines of text. Details
of further Atlantic coverage together with the latest schedule are available
from http://www.dwd.de.
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Technical Specifications
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- 16 lines
x 40 characters per screen
- Very hidh
contrast display with white backlight
- Supply
voltage nominal 12v
- Consumption
50mA @ 12v (100mA with backlight)
- Power
save auto timer on backlight
- Spectrum
screen for simple signal analysis
- Non volitile
program and message memory
- Compact
sizeL L-150mm, H-112mm, D-42mm
- Active
Micro antenna: H-175mm x 40mm. 7M Cable
The availability
of the DWD signals is dependent on radio propagation and local conditions
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