WEFAX satellites give anything
up to 400 images a day and can provide relay images of the
other side of the world. The resolution varies between 2.5
and 10km. There are 3 sensors, visible, infrared and upper
atmosphere water vapour. The main frequency is 1691MHz and
we provide a special receiver for this purpose. This signal
from a 90cm (3 foot) dish and is amplified by a low noise preamplifier
mounted directly on the dish. The 1691MHz signal is run down
special high quality cable into our WEFAX receiver. The input
to the receiver is 1691MHz and the output is an audio signal
that you can hear.
There are people who convert the 1691MHz signal down to 137MHz
to use their existing APT receiver, the philosophy is fraught
with problems and customers who have tried this and then upgraded
to our WEFAX receiver have reported a huge increase in image
quality and resolution. Our WEFAX receiver has been designed
to provide optimum performance.
WEFAX Geostationary Antennas
The 90cm (3 foot) dish is the standard for Meteosat,
GOES and GMS. Made from spun aluminium it is robust and
strong. Brackets and supports are made from stainless
steel.
Shown here on the optional patio mount stand, the dish
can be at ground level or mounted on the side of your
building.
For those with limited space or wanting the ultimate
in portability, our 9 inch square (23cm) Patch antenna
for Meteosat and GOES is for the traveller who needs
a complete system in a brief case, or for the flat dweller
with a window !
When used with our WEFAX preamplifier and WEFAX receiver,
this tiny antenna will produce colour moving images from
the Meteosat and GOES satellites.
Cat not included !
1.7GHz PHEMT Preamplifier
Our geostationary preamplifier is regarded by many as the
best available and has a noise figure of just 0.45dB or less.
It covers 1690-1710MHz with 35dB of gain. This high gain allows
the use of 20m of cable thereby placing the sensitive electronics
indoors away from the effects of temperature and the weather.
The unit is IP67 water resistant class. The voltage range is
8-14V at a current of 80mA and is powered automatically by
the cable from our receiver. N connector input, F type output.
1.7GHz Receiver
The WEFAX receiver is self contained and is designed to be
used with the preamplifier above. It receives the satellite
directly on 1691MHz. The output from the receiver is audio
and is plugged directly into any of our interfaces. This receiver
is for Meteosat and GOES. Enquire for GMS, INSAT and GOMS.
Cable
We supply RF cable in two lengths, 20m (65 feet) and 40m (130
feet). This cable is extremely high quality 75 ohm semi-air
spaced and comes with connectors ready fitted. This cable is
only 6mm (1/4") diameter and outperforms most 1/2" cable
due to its construction and dielectric losses. It is foil and
braid screened to eliminate any influx of interference. Although
other, sometimes cheaper cable appears to have the same specification,
in practice we find that it does not offer the same performance
or deteriorates in the sun and rain.
What do i need for...
A
WEFAX Geostationary system
Antenna
90cm
(3 foot) dish or Flat panel
Preamplifier
Essential
for use with the Meteosat/GOES and GMS receiver
Cable
Choose
either 20m or 40m
Receiver
WEFAX
receiver
Interface
/ software
PROsat
for Windows i :The definitive versatile
unit with full i software
PROsat for Windows LC : Low cost with full i software
NOAA for Windows: includes full i software
Power
supply
Timestep
90-260V PSU
Upgrades
NOAA
APT system, crossed dipole, preamplifier, 40m cable,
PROscan receiver.
The full i software
will support the upgrade.
