Appendix C | Antenna Specifications | ||
| Table 14: Recommended Geodetic Active Antennas | ||
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| Antenna Types | Part Number |
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| Completely sealed round disk antenna with 1 inch |
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| thread, 5/8 inch adaptor, and built in ground plane |
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The antenna gain should be selected depending on the cable loss between the antenna and the receiver. Prices and availability can be found in the latest Price List on our website.
C.3 Active Antenna
Lower cost antennas for higher volume applications or for more cost sensitive applications are available.
L1 GPS receivers are manufactured by implementing a 20 dB LNA on board. For this reason, an active +12 dB antenna is more than adequate. An antenna with +26 dB to +36 dB may overdrive the RF input of the L1 GPS receiver if it is used with a short cable between the antenna and the receiver. Table 15 lists the active antennas which could be used with any of the L1 GPS receivers.
Table 15: Recommended Active Antennas
| Typical Applications |
| Part Numbers |
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| AVL (This antenna is currently | (MCX connector & 6 meter cable) |
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| supplied with SUPERSTAR II | (BNC connector & 6 meter cable) |
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| development kits) | (TNC connector & 6 meter cable) |
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| Marine | TNC Female Bulk head |
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Prices and availability can be found in the latest Price List on our website at http://www.novatel.com.
C.4 Passive Antenna
For DGPS applications where <1 m accuracy is required, it is strongly recommended to use an active geodetic GPS antenna if possible. In the event where the cable length between the receiver and the antenna is very short (less than one meter), a passive antenna could then be considered. Table 16 on Page 59 lists the specifications for recommended passive antennas.
58 | SUPERSTAR II User Manual Rev 3 |
