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8.3.3 Radios<br />

C<br />

RTK Mapping 8<br />

<strong>Trimble</strong> provides a comprehensive range of radio solutions that have<br />

been tested and proven. TRIMTALK radios are powered from the<br />

receiver’s supply using a common data/power cable—receiver and<br />

radio utilize the same power source. This configuration simplifies<br />

battery issues.<br />

Warning – In some countries there may be legal regulations for the use of<br />

particular radio frequencies. <strong>Trimble</strong> recommends that you ensure that<br />

you have a legal entitlement to use radios at a particular frequency.<br />

Radio repeaters<br />

Real-time data collection methods rely on trouble-free radio<br />

transmission. Sometimes the conditions or topography of a site<br />

adversely affect radio transmission, resulting in limited coverage.<br />

Occasionally, in these cases, radio repeaters are used to receive the<br />

base transmission and then rebroadcast it on the same frequency.<br />

<strong>Trimble</strong> provides four radio solutions that you can use with the RTK<br />

system. Table 8.2 lists these radio solutions, and shows the number of<br />

repeaters that you can use with each.<br />

Table 8.2 Radio repeater options<br />

Radio Number of repeaters<br />

TRIMTALK 450 1<br />

TRIMTALK900 1,2,3,4,or5<br />

TRIMTALK 450S (12 kHz)<br />

TRIMTALK 450S (25 kHz)<br />

1<br />

1or2<br />

TRIMMARK 1 – Refer to the TRIMMARK<br />

documentation<br />

Pacific Crest / Satel / Clarion Refer to the manufacturer’s<br />

specifications<br />

TSC1 Asset Surveyor Operation Manual 203

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