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60
en | Troubleshooting and FAQ
RE3 UHF Wireless
rack. The PLPA, although passive, has 10dB of passive gain, and may be fine if the receiver
rack is on stage, however the ALPA active antenna has adjustable gain (selectable 3dB and
10dB amplified), and if the cable run to the receiver rack is lengthy, it may be the best choice.
You decide. You'll need TWO low-loss coax cables to run the antenna signals to the first AASP
splitter. Choices are RE3-ACC-CXU25 twenty-five foot, RE3-ACC-CXU50 fifty foot, RE3-ACC-
CXU75 seventy-five foot, or RE3-ACC-CXU100 one hundred foot. The splitter has all cables
required if you connect your remote antenna cables to the rear of the first AASP, but if you
want to attach the antenna cables at the front of the rack, you'll need to add an RE3-ACC-
CXUF rear to front mount antenna cable kit. That should do it.
Q - Why am I not seeing much audio level on my receiver AF meter?
A - The transmitter input sensitivity likely needs to be adjusted. It has 30dB of adjustment
(-15dB at lowest gain to +15dB at highest gain). On the transmitter, press and hold SET until
the characters on the display begin to flash. Continue to progressively press SET until
reaching the sensitivity parameter. Press the up button to increase the displayed value.
Pressing SET will store the new setting. Continue working with this setting until the receiver's
AF meter yellow LED is lighting upon high voice peaks. An occasional red LED will be OK.
Q - My receiver is in lock mode. How do I unlock it?
A - Press and hold the SET button for two seconds then use down button to select OFF. Then
press SET. Receiver is unlocked.
Q - Why does my receiver RF meter show RF signal present before I turn on the mated
transmitter?
A - There is a competing RF signal now present on that frequency. With the RE3 transmitter
off, follow the scan process and select a new clear frequency. Then turn on the transmitter
and resync it to the receiver's new data.
Q - The frequency I've had my set tuned to has always worked flawlessly. Why is it that
when I traveled to an out-of-town gig, I'm getting interference there?
A - RF environments change city-to-city. When traveling, it's important to remember that UHF
television broadcasts are not always on the same channel in every city. Something in the city
or venue you traveled to is different. Follow the scan process and select a new clear
frequency. Then turn on the transmitter and resync it to the receiver's new data.
Q - Our RE3 systems have been working fine in the small venue we play. We decided to try
high power on the lead vocal mic transmitter, and now we're having all kinds of problems.
What could be wrong?
A - In your small venue, high output power on any or all of your mics may be too much because
of transmitter-to-transmitter, and transmitter-to-receiver proximity. Too much RF gain can
actually be more destructive than low RF gain. High RF gain is most useful for long
transmission distances, but at short distances, it may contribute to intermodulation with
nearby transmitters and receivers. If the low power setting was working for you, switch back
to it.
Q - I have a long distance between where I want my antennas mounted and where the
receivers will be located. Do I need antenna boosters and high-end coax?
A - This might be a very good idea. The purpose of using antenna boosters and/or active
antennas is to compensate for the signal loss incurred by the antenna-to-receiver coax cable
run. The system you describe will be improved with active RF antenna components and low-
loss coax. Coax cable performance is measured by loss factors, i.e., dB of loss per 100 meters.
The goal is to deliver to the receiver the approximate RF gain which is received at the antenna.
The RE3 optional antenna coax cables should perform as per: 25-foot CXU25 will lose
approximately 1.3 dB on the run, the 50-foot CXU50 will lose approximately 1.4 dB on the run,
the 75-foot CXU75 will lose approximately 2.4 dB on the run, and the 100-foot CXU100 will
02-2023 | 05 | F.01U.362.808
Electro-Voice
User Manual
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