Spectra Precision ProFlex 800 Backpack - Manual (Page 28)

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Temporary RTK Base Setup
Prerequisites • You will need a tripod and a tribrach (not provided) to
install the base. You will also need an antenna extension
pole fitted with a 5/8” male adaptor (not provided but
available as an accessory).
• For a long-range radio link, i.e. more than 1 mile or
1.6 km, for which the radio antenna should be placed as
high as possible, it is good practice to install the antenna
on top of an antenna pole secured on a tripod (neither of
these items is provided).
• To power an external radio, you need a 9-30 V DC power
source. Using a standard 12 V DC battery is a convenient
choice. In this configuration, the ProFlex 800 can be
powered either from the same power source
(recommended), using cable P/N 802143, or from its
internal battery.
Powering the ProFlex 800 from the external battery offers
two advantages:
1. Operating sessions can be extended significantly.
2. The external battery operates as a trickle charger for
the ProFlex 800’s internal battery.
• For a ProFlex 800 fitted with an internal transceiver, the
level of RF power radiated by the UHF antenna depends
on the type of DC source used to power the receiver:
– Internal battery used: The RF power is limited to
100 mW whatever the requested level of power.
– External DC power used: The RF power level is as
requested (not intentional limitation).