Synergy Systems SA-300 GPS Antenna Timing 1000 5V 30dB Spectracom 8225 Outdoor
( 283606419727) )
New Open Box • Synergy Systems SA-300 • GPS Antenna • Timing 1000 • 5V 30dB • Equivalent to Spectracom 8225
Item is new open box, and ships in plain packaging.
An active GPS Outdoor Antenna tuned to receive 1575.42 MHz L1 band satellite transmissions. The received signals are passed through a narrow band-pass filter and a preamplifier within the antenna. The active antenna circuitry provides ~30 dB of gain and requires +5 VDC at 27 milliamps (provided by the GPS receiver over the antenna coax). Each antenna is terminated with a type TNC female connector.
Note that no mounting hardware is included. Usually these are mounted on a 3/4" NPT Schedule 80 PVC nipple - usually 12 inches in length which is then secured to a suitable upright support with a couple of hose clips. That part can be obtained from Lowes under part number 56791, see below.
The GPS antenna must have an unobstructed line of sight to the sky. Rooftops that are clear of other structures or geographic features overhead, with views to the horizon, generally make good installation locations. Such a clear view allows the antenna to track the maximum number of satellites throughout the day. Installations with obstructed views may experience reduced reception quality and may not be able to track simultaneously the maximum number of satellites.
When installing a GPS antenna, select a site at which the antenna will not become buried in drifting or accumulated snow. It should not be covered by foliage or placed in a position where it could become obstructed in this way.
Whenever possible, avoid placing the GPS antenna in close proximity to broadcast antennas or near television or FM radio transmitters. Certain frequencies are harmonics of the GPS signal and can inhibit reception.