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RE3 UHF Wireless
periodically, emitting a signal (if close enough to the transmitter or receiver) which could
be creating sporadic audible interference. To resolve, rescan the receiver and select a new
clear frequency. Then resync the transmitter to the new receiver data.
Q – It seems that when the performer walks way out into the audience, the system starts
losing signal. Why am I not getting the range from the system I need?
A – This could indicate a variety of influencing factors. The first thing to check is if your
system is, or is not, sharing a frequency with another signal at the receiver. While
observing the receiver's RF meter, turn off the transmitter. If the RF meter continues to
show signal after the transmitter is off, your transmitter is competing with another signal at
the receiver. To solve, perform the scan process, tune the receiver to a new clear
frequency, then turn on and sync the transmitter to the new receiver data. The second thing
to check is receiver antenna placement and cables. Ensure that your antennas are out in
the open in the shared space of the transmitter (meaning not behind walls or in another
room), away from reflective or grounding surfaces, and connected to the receiver with
appropriately-rated 50Ω BNC-terminated coax cable. The third thing to check is the receiver
squelch. Many times, having the squelch set too high will greatly reduce system range. Try
lowering the squelch (number value) to increase system range. The fourth thing to check is
transmitter output power. If a compromised range is accompanied with low RF signal on
the receiver's RF meter, set the transmitter output power to high, then look for improved
range.
Q – Why is it hard to find an open frequency in my location?
A – RE3 shares the UHF radio spectrum primarily with UHF television broadcasters.
Geographically, some broadcast areas are more densely packed with television broadcast
signals than others. A full system scan looks through the entire tuning bandwidth of the
receiver and will locate frequencies which are not affected by UHF television or other RF
signals. Knowing your local RF environment is important. Those local television stations
which broadcast their strong and wide signals into the air are regulated by the government,
and consulting government databases will help identify the frequency areas occupied by
local broadcasters. RE3 tuning bandwidths are relatively wide, allowing generous tuning
options, however if the airwaves aligning with your particular RE3 tuning bandwidth are
filled up with UHF television, finding open frequencies will be difficult. Selecting the best
band for your area is important. Something to consider is if you are using your RE3 set in
the USA or Canada, the 6M band will have no competing UHF television signals because
653-663MHz is designated for wireless microphones only as a result of the reallocation of
600MHz initiatives.
Q – I manually created frequencies for my multi-channel system. Why am I getting
interference between the channels?
A – Manually creating custom tuning schemes without the assistance of frequency
coordination software may contribute to the problem described. RE3 frequency groups are
strategically created to be intermodulation free using advanced frequency coordination
software. It's likely that your self-made grouping has created destructive intermodulation
Electro-Voice
Installation manual
Troubleshooting and FAQ | en
2021.06 | 03 | F.01U.362.808
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