User's Guide

SinoGNSS
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T300 PLUS User Guide
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5.6 External radio mode
The external radio mode can extend RTK working distance, which is ideal for areas
with high constructions or strong signal interference. To set up external radio mode,
it requires:
⚫ Base station
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An external radio
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An external power supply
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A long whip antenna
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Transmission cables
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A T300 PLUS receiver
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Tripod and tribrach
Tip: 1) See Appendix A for detailed definition of 7-pin Lemo cable that connects the T300 PLUS
receiver and external radio; 2) See Appendix B for the operating information of CDL7.
Warning: 1) You MUST connect CDL7 to external antenna firstly and then supply power,
otherwise the CDL7 will have a risk of burnout; 2) You’d better put it in a shelter when raining,
because it’s not water-proof.
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