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receiver has no such LED.)
8. Turn on your transmitter. If your system contains an AR1 receiver, its “Power/ RF” LED should change color from red to green, indi-
cating that it is receiving valid RF signal and is placed and positioned correctly. If your system contains either a UR1 or UM1 receiver,
one of the “A/B Receiver” LEDs will be lit, showing you whether the (left) “A” or (right) “B” receiver is currently being used. The UR1 /
UM1 meter will also indicate the strength of the incoming RF signal.
9. Turn on your connected amplifier and/or mixer but keep its volume all the way down. If your system contains an AL1 transmitter,
make sure it is unmuted. Set the Volume, Level or AF Level knob on the receiver fully clockwise; this is unity gain.
10. Speak or sing into your mic at a normal performance level while slowly raising the audio input control of your amplifier or mixer
until the desired level is reached. If necessary, use the supplied plastic screwdriver to adjust the transmitter’s Gain trimpot in order to
increase or decrease its signal level. If you are using an AL1 transmitter with the built-in microphone, correct placement is critical to
sound quality. It should be unobstructed by clothing and either clipped to a shirt pocket or lapel, or worn around the neck on the sup-
plied lanyard.
11. Do a walkaround through the intended area of coverage while observing the receiver’s “Power/RF” LED or RF Meter; it should
indicate sufficient RF reception in all areas of coverage (in the case of the AR1, the LED will light steadily green) . Reposition it (or its
antenna) as necessary. If extended range coverage is required, a Samson UR1 or UM1 true diversity receiver (set to the same channel
as the transmitter) should be used
12. If you hear any spurious noise from the receiver output when the transmitter is turned off, use the supplied plastic screwdriver to
adjust the receiver Mute (squelch) level control, slowly turning it clockwise to the point at which the noise disappears.
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Samson AirLine
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