Philips RFX6500/17B Mode D'emploi page 13

How to Install the RF Extender
3 Check the LED on the Receiver unit for RF interference.
If the LED does not blink, or blinks only sporadically, position the Receiver unit
there, and continue with step 7. If the LED still blinks, continue with the next
step.
Note
4 Try out other positions moving the Receiver unit around, and check the
LED for RF interference.
If the LED does not blink, or blinks only sporadically, mount the Receiver unit in
that place, and continue with step 7. If the LED still blinks, continue with the
next step.
Tip
5 Retract the antenna, keeping it directed upwards.
Retracting in the antenna will cause the Receiver unit to be less sensitive to
interference. It will also decrease the working range of the Pronto Remote
Control.
6 Try out other positions moving the Receiver unit around, and check the
LED for RF interference.
If the LED does not blink, or blinks only sporadically, mount the Receiver unit in
that place.
7 Try out your Pronto Remote Control.
When sending commands with the Pronto Remote Control, the LEDs of both
the Receiver unit and the Blaster unit should blink.
User Guide
10
When the LED blinks only sporadically, with low light intensity, there are no
problems with RF interference.
Do not position the Receiver unit:
Near audio/video devices, since these devices may cause RF interference.
In particular, keep the Receiver unit away from optical audio/video devices,
such as a DVD player.
Near microwave ovens or wireless access points.
Inside a metal closet, since metal objects can disturb RF signals.