18
Setting Up and Using the
UHF Series System
• If you are using a UT-4 beltpack transmitter, use the supplied
plastic screwdriver to slowly turn its MIC Level or GTR Level
control (trimpot) clockwise until the signal reaches optimum level
without distortion.
• If you are using a UH-4 handheld transmitter, use the supplied
plastic screwdriver to slowly turn its Audio Level control (trimpot)
clockwise until the signal reaches optimum level without distortion.
10. When first setting up the UHF Series System in a new environment,
it’s always a good idea to do a walkaround in order to make sure that
RF coverage is provided for your entire performance area. Accordingly,
with the transmitter on and unmuted (Mute switch “Off”), walk through
the entire area that will need to be covered while speaking, singing, or
playing your instrument. As you do so, note that one or more segments
in the UR-4 RF Level display light up; the more segments light, the
stronger the signal. Also, note that the “A” and “B” LEDs on the UR-4
receiver occasionally switch on or off, always showing you which anten-
na is receiving the stronger signal. The basic rule of thumb for wireless
audio systems is to always try to minimize the distance between trans-
mitter and receiver as much as possible and also to try to maintain “line
of sight” between the two (that is, the person using the transmitter
should be able to see the receiver antennas). In fixed installations such
as A/V or corporate conference rooms or for extended range applica-
tions (where the transmitter and receiver are more than 150 feet apart),
it may be desirable to remote the UR-4 antennas so that the strongest
possible signal is received from the planned transmission points. This
can be accomplished by using standard BNC connections and 50 ohm
coaxial cabling that is suitable for up to 1 gigaHertz bandwidth usage.
For more information, see the “Trouble-shooting” section on page 20.
If you have followed all the steps above and are still experiencing
difficulties, call Samson Technical Support (1-800-372-6766) between
9 AM and 5 PM EST.
