Nady Systems U-800 Feedback, No or Low Audio, RF Interference and Finding Open Channels

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7. 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 microphones are more resistant to feedback. However, they pick up sound sources best that are directly in front of the microphone. Also, mics that are farther from the sound source (such as a handheld) require more acoustic gain and thus are also more prone to feedback than close-source mics.

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. Also confirm that the transmitter’s AUDIO MUTE (36, 40) is not in the OFF position. The receiver’s UNBALANCED LINE OUT (19) is adjustable so make sure the VOLUME CONTROL (21) is set properly.

RF Interference and Finding Open Channels

The FCC mandates the following information be provided to all end users of this equipment:

Consumer Alert

Most users do not need a license to operate this wireless microphone system. Nevertheless, operating this microphone system without a license is subject to certain restrictions: the system may not cause harmful interference; it must operate at a low power level (not in excess of 50mW); and it has no protection from interference received from any other device. Purchasers should also be aware that the FCC is currently evaluating use of wireless microphone systems, and these rules are subject to change.

For more information, call the FCC at 1-888-CALL-FCC (TTY: 1-888-TELL-FCC) or visit www.fcc.gov/cgb/consumerfacts/wirelessmic_factsheet.html.

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), it can often be overcome by adjusting the receiver‘s MUTE LEVEL/SQUELCH (13)—see Adjusting the Mute Level / RFSquelch.

If receiving interference on a selected channel with the transmitter off, or if you en- counter interferences in operating multiple U-800 systems simultaneously at the same location see: “6. Selecting Group/Channel, IR Programming and Simul- taneous Multichannel Operation” for proper procedures for reprogramming system(s) for open channels.

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Contents 800 Introduction Using this ManualReceiver System FeaturesReceiver Front View Quick User Controls GuideSimultaneous Multichannel Operation DC Power Supply Adapter 120VAC/22VDC/400mAUH-800 Handheld Transmitter Front and Bottom View UB-800 Bodypack Transmitter Front View Rack Mounting the Receiver System OperationButton Function Keyboard/Buttons Lock Function Adjusting the Mute Level/ RF SquelchConnecting the Audio Output Audio Level and Peak LED IndicatorPowering the UH-800 Transmitter On/Off Setting up the UH-800 TransmitterOperating the UH-800 Handheld Transmitter Setting up the UB-800 TransmitterPowering the UB-800 Transmitter On/Off Page Choosing Group/Channel for the System Instrument Use UB-800 GTReceiver ASC/IR Sync GR/CH Frequency Receiver/Transmitter ASC IR Sync Manual Programming No or Low Audio FeedbackRF Interference and Finding Open Channels Consumer AlertMiscellaneous Tips Overall System Performance SpecificationsUB-800 Bodypack Transmitter Frequency Plan11. U-800 Frequency Lists Factory Preset Channels User Selectable ChannelsService Information Optional AccessoriesThis warranty is subject to the following conditions ONE Year Limited WarrantyNady SYSTEMS, INC

U-800 specifications

The Nady Systems U-800 is a professional-grade wireless vocal microphone system designed for performers and speakers who demand clear sound and reliability. With advanced features and robust performance, the U-800 stands out in the crowded market of wireless audio equipment.

One of the key features of the Nady Systems U-800 is its UHF frequency range. Operating within the ultra-high frequency spectrum, this system provides a stable and interference-free signal. This is critical for live performances, as it minimizes the chances of audio dropouts or disruptions, ensuring that artists can deliver their best without technical difficulties.

The U-800 is equipped with a dual-channel receiver that allows for simultaneous operation of two microphones. This flexibility is ideal for duets, panel discussions, or any situation where multiple vocalists or speakers are needed. Each channel has its own volume control, providing users with the ability to balance sound levels seamlessly.

Signal strength is another vital characteristic of the U-800, featuring a dynamic range that offers clear high frequencies and deep lows, contributing to an overall rich sound quality. The system also employs advanced companding technology, which reduces unwanted noise and enhances the clarity of the audio being transmitted.

The microphone itself is lightweight and ergonomically designed for comfortable use, making it suitable for long performances or presentations. Additionally, it features a cardioid pickup pattern that helps isolate the desired sound source while minimizing background noise. This is particularly beneficial in live settings where crowd noise or other distractions may be present.

Battery life is a crucial aspect of any wireless system, and the U-800 does not disappoint. With efficient power management, the system offers extended battery life, allowing users to perform longer without the worry of battery depletion. It is also designed for quick and easy setup, with an intuitive interface that makes it accessible even for those who may be new to wireless systems.

In summary, the Nady Systems U-800 combines professional audio quality with user-friendly features, making it a reliable choice for musicians, entertainers, and speakers. Its UHF operation, dual-channel capability, excellent sound quality, and long battery life position the U-800 as a leading solution in the realm of wireless microphone systems. Whether for stage performances or public speaking events, the U-800 ensures that every word and note is transmitted with clarity and precision.
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