Radio Antenna; Figure 2.6 Ashtech Spread-Spectrum Radio - ashtech Z-Xtreme System Manual

trum radio manufactured by Ashtech.

Figure 2.6 Ashtech Spread-Spectrum Radio

Spread-spectrum radios have been known to function at ranges much greater than 2
km, but to do so requires clear line-of-sight between the base and rover systems. Any
obstructions will greatly reduce the range.
The spread-spectrum radio used at the base system and the rover system are identi-
cal and interchangeable. The spread-spectrum solution for the ZX SuperStation is
manufactured by Ashtech and called the SSRadio. The rover SSRadio has the option
of being embedded into the rover receiver. The base SSRadio must be external to the
base receiver.

Radio Antenna

The base and rover radios cannot function without antennas. The transmission and
reception point of the radio signal is the antenna. The base radio antenna is usually
larger than the rover antenna radio since its task is to transmit the signal. Figure 2.7
13