SDRs that have the GPS option have a GPS antenna and four metres of cable included. The first consideration for a GPS antenna is a clear view of the sky, preferably 360 degrees. In the usual installation, the GPS antenna is located low and close to the equipment building roof. The GPS antenna should be attached to a suitable mast and connected to the SDR.
Use the guidance below to find the optimal position for mounting the GPS antenna
a) The antenna must be mounted in an upward position.
b) The antenna should be installed at the highest possible point available at the site. This is to ensure minimum obstruction from any surrounding obstacles (trees, buildings or other installations, etc.).
c) To avoid influence of reflected waves, the antenna must not be installed less than 2m away from metallic objects with a dimension greater then 20 cm.
d) Antenna installation should be avoided in close proximity with other receivers or transmitters likely to cause interference.
e) The antenna should be positioned to minimise the risk of a lightning strike. See Lightning Protection Overview for guidance on placement.
f) The antenna should be placed within 4 metres of the SDR.
The first consideration for a GPS antenna is a clear view of the sky, preferably 360 degrees. The GPS antenna should be attached to a suitable mast.
Use the guidance below to find the optimal position for mounting the GPS antenna
a) The antenna must be mounted in an upward position.
b) The antenna should be installed at the highest possible point available at the site. This is to ensure minimum obstruction from any surrounding obstacles (trees, buildings or other installations, etc.).
c) To avoid influence of reflected waves, the antenna must not be installed less than 2m away from metallic objects with a dimension greater then 20 cm.
d) Antenna installation should be avoided in close proximity with other receivers or transmitters likely to cause interference.
e) The antenna should be positioned to minimise the risk of a lightning strike. See Lightning Protection Overview for guidance on placement.
f) The antenna feed should be protected at the building entry using a surge arrestor.
The GPS antenna bracket is mounted on a Pole up to 40mm (1.5"). The Antenna screws on to the 25m threaded tube.
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The RJ58 antenna cable is provided with a TNC connector attached at each end. Run the cable from the SDR-micro or HiperMAX GPS receiver to the location of the GPS antenna.
Thread the TNC connector cable through the threaded tube on the bracket and attach the TNC connector to the Antenna.
Connect the tube to the antenna by holding the antenna firm and rotating the bracket around the cable until the Thread is fully engaged in the threaded part of the antenna.
Connect the bracket to the pole using the two U bolts and tightening with a 10mm spanner.