![background image](http://html1.mh-extra.com/html/sennheiser/em-3731-ii-09-09/em-3731-ii-09-09_instruction-manual_1242733007.webp)
The product family
6
The frequency bank system
The receivers are available in three UHF frequency ranges with up to
184 MHz switching bandwidth:
The receivers have seven frequency banks:
400
600
800
1000
470 – 638
Range
1 (L)
776 – 960
Range
3 (P)
614 – 798
Range
2 (N)
Channel Frequency bank
1
2
3
4
5
6
U
1
The receiving frequencies are factory-
preset (see enclosed frequency table)
and cannot be changed.
The receiving
frequencies can be
freely selected
within the
switching
bandwidth.
2
...
max. 60
CAUTION!
Risk of reception interference!
If – within the receiver’s frequency range – transmitters
transmit on channels from different frequency banks,
reception can be subject to interference and
intermodulation. Only the factory-preset frequencies within
the frequency banks “
1
” to “
6
” are interference and
intermodulation free.
왘
Set all transmitters of a multi-channel system to different
channels within the same frequency bank.
Optimized for maximum
transmission reliability
Additionally available channels in
Low Intermodulation mode