Nady Systems 4W-1KU Owner's manual - Cautions and Troubleshooting

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.