Version 1.0 Copyright Roger™-GPS 2017 12 01
7
ROGER™ GNSS repeater installation (applies to GPSR-1 and GNSS-L1G1GA)
Install the GNSS repeater transmitter by fixing it to the ceiling, wall or a suitable mount. The repeater has
an integrated transmitter TX antenna, which is located in the middle of the unit, same side as the status
LED. The transmitter antenna radiates mostly towards to the same direction as the LED. Ideally the
transmitter should be located so that any desired GNSS receiving location (like an antenna on top of a van
in a garage) has a direct line-of-sight to the repeater antenna.
Also note the length of the power adapter cable when
planning the installation location.
After the outside antenna, cable and repeater has been
installed. Make sure the antenna connector is properly
fastened to the repeater, plug in the power adapter.
Power on and the green indicator LED blinks for about two
three seconds during the startup phase.
Turn the control knob in order to set the gain. Higher gain
increases the coverage of the GNSS reception.
Constant green light indicates proper gain setting. Turning
the knob too far clockwise will result in the red LED to light
up indicating too large gain setting. Turning the knob too far
counter clockwise will result in the green LED to blink
indicating too low gain setting.
The indications of the status LEDs are:
• Constant GREEN: Transmitter is operating normally
• Constant RED/GREEN: Transmitter is operating normally;
output power has been limited to maximum allowed value.
• RED: Transmitter has detected an error or interfering
signal. Typical reason is that the input antenna is located so
that it can pick up the signal from the transmitter and a
feedback oscillation occurs. Other common reason is that
there is an interference source close to the receiving
antenna.
Troubleshoot:
Problem: Red light is on.
Solution: The gain setting is too high. Turn the control knob counter clockwise to decrease the gain.
Problem: Green light blinks (about 5 Hz), red light is off.
Solution: Transmitted signal level is too low. Turn the control knob clockwise to increase the gain.
In normal operation only the green indicator LED is steady on. In all other cases please check the antenna
connector before making any gain adjustments.
