17
Cautions and Troubleshooting
Feedback
Avoid acoustic feedback (howling or
screeching) by taking care in selecting
PA volume, transmitter location and
speaker placement.
Please also note the pickup pattern
characteristics of the microphone selected.
Unidirectional mics are more resistant to
feedback. However, they pick up sound
sources best that are directly in front of the
mic. Also mics that are farther from the
sound source require more acoustic gain
and thus are also more prone to feed back
than close-source mics such as handheld.
no or low audio
If you are not getting audio through the
system, carefully re-check all setups.
Especially note that the receiver and
transmitter must be set to operate on the
same RF channel. For BT-1KU bodypack
transmitter, also confirm that the
Power
Off/Mute/On Switch (38)
is not in the Mute
position. The receiver’s
Unbalanced line
level Out (17)
is adjustable so make sure
the
Volume (11)
is set properly.
RF Interference and
Finding Open Channels
If you encounter slight receiving interference
when the transmitter is far from the receiver
(from other than an operating TV station
on the same frequency), often it can be
overcome by adjusting the receiver‘s
Squelch Control (16)
(see
Adjusting the
Squelch
). If receiving interference on a
selected channel with the transmitter
off, you must reprogram the receiver
and transmitter to a different channel.
See:
Selecting the 4W-1KU QUAD Receiver
Volume Level / Group / Channel
Programming the HT-1KU/BT-1KU
to the Selected Channel
To reprogram, you must first find an open
channel. To do this, follow the operating
procedure outlined in
Selecting the 4W-1KU
Receiver Volume Level / Group / Channel
.
With the associated transmitter off, scroll
through the groups/channels to find one
that shows no received signal on the
receiver’s
RF Signal Meter (12)
(no bars).
Also, there must be no bars either on each
of the three immediately adjacent channels
both above and below the selected
channel for optimum interference-free
operation (i.e. in a field of seven adjacent
channel total—with the channel used in
the middle). If operating multiple 4W-1KU
Series systems simultaneously, repeat this
procedure with every new channel being
selected, with previously tuned systems all
on, both transmitters and receivers.
Please note that wireless frequencies are
shared with other radio services. According
to FCC regulations, wireless microphone
operations are unprotected from
interference from other licensed operations
in the band. If any interference is received
by any Government or non-government
operation, the wireless microphone must
cease operation or change frequencies.
The above statement is valid only for use
in the U.S.A.
Note:
More bars in the
Received Signal (12)
icon
indicate good signal strength in operation with the
transmitter on, but more than 1 bar showing with
the transmitter off also indicates the presence of
likely RF interfering signals at that location. If this
happens, select a different GRP/CH. One bar or
less is ideal for interference-free operation.
