Magellan ProMark3 RTK Specifications download pdf (Page 22)

ProMark3 RTK Specific Accessories

License-Free Radio Modems

Radio modems come in pairs, each composed of two similar

units that can indifferently be used at the base or the rover.

The radio modem used at the base will automatically become

a transmitter while the other one, used at the rover, will auto-

matically operate as a receiver.

Models. Radio modems come in two different models. One is

for use in North America (NA) (P/N111360), and the other

(P/N 111359) is intended for most European countries (EU)

(except Italy, Slovak Republic and Bulgaria) (This information

is subject to change without notice). The table below gives the

main features of the two models.

Frequency channels. Radio modems are plug-and-play units.

They are all factory-set to operate on their first channel (chan

nel #0). If however the default transmission channel is

jammed in your working area, you can select another transmis-

sion channel using the Radio Configuration utility (see Radio

Configuration on page 255). Don’t forget in that case to

change the channel on both units.

Frequency hopping in the NA model. The selected channel

corresponds to the first channel on which the radio transmits/

receives.

RTCM Rate in the EU Model. In the European Union, license-

free radios are allowed to transmit only 10% of the time. To

be sure this requirement is always met, Magellan recommends

that you set the RTCM rate to 2 seconds. Using “1 second” is

not a guarantee that this 10% requirement will always be met,

especially if a large number of corrections are transmitted.

Features

P/N111360

P/N111359

Radiated Power 0.5 W 0.5 W

Frequency Band 902-928 MHz 869-870 MHz

Number of channels 50 (#0 to #49) 3 (#0 to #2)

Frequency Hopping Yes, every 30 ms No

Duty Cycle No restriction

< 10%; 2-sec transmit rate

min. recommended

Data rate 10 kbits/sec 10 kbits/sec

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Magellan ProMark3 RTK Specifications Page 22