Line 6 Relay G55 Guitar Wireless System Manual
Contents
1. and if not installed and used in accordance with the instructions may cause harmful interference to radio communica tions However there is no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equip ment off and on the user is encouraged to try to correct the interference by one or more of the following measures Reorient or relocate the receiving antenna Increase the separation between the equipment and receiver Connect the equipment into an outlet on a circuit different from that to which the receiver is connected Consult the dealer or an experienced radio TV technician for help This Class B digital apparatus complies with Canadian ICES 003 This Category II radio communication de vice complies with Industry Canada Standard RSS 310 Cet appareil numerigue de la classe B est conforme a la norme NMB 003 du Canada Ce dispositif de radiocommunication de cat gorie II respecte la norme CNR 310 d Industrie Canada www americanmusical com You should read these Important Safety Instructions Keep these instructions in a safe place Before using your Relay G55 Digital Wireless System carefully read the applicable items of these operating instructions and the safety suggestions 1 Zi J 20545 SDPPI 2011 CE 3794 odanatet odanar FE Obey all warnings in the Rel2. antennas connected to the receiver you can place it where it has better line of sight to the transmitter Note If there are still spots where poor signal reception occurs mark the problem areas on the floor with removable tape and let the user know to avoid those areas Avoiding WiFi Interference If you see moderate to strong interference on one or more channels as shown by the RF LEDs turning red when the transmitter is off it is likely that you are seeing a WiFi channel that is operating in the same location If you can locate that eguipment and position your receivers farther from it or relocate the receiver antennas farther from it if using an antenna distribution system the interference may lessen in strength Also be aware that your transmitters may interfere with the WiFi network operation if they are transmitting close to the routers The best option when you see strong interfering signals is to use the other available Line 6 channels that are clear The most commonly used WiFi channels note that their numbering does not correspond with Line 6 channels are channels 1 6 and 11 These channels each cover 20 MHz of spectrum and usually only one WiFi channel will be in use in a location In the majority of cases any of the Line 6 wireless channels will be compatible with existing WiFi with minimal to no interference and in all cases you will be able to use six to eight channels of Line 6 wireless while completely avoiding the WiFi chan
3. used a four frequency transmission mode TBP 12 Bodypack e With the transmitter on hold the Select button until the channel number flashes e Press and hold the On Mute power button and then quickly press the Select and Value press within one second as waiting longer may turn off the transmitter e Note that the top line of the LCD display changes temporarily to RF 1 in place of CH indicating that the transmitter is now in a transmission mode that is compatible with Relay G90 and Relay G30 receivers e To return to the RF2 transmission mode repeat the above process of pressing the power button quickly followed by the Seleet button from the CH page The top line of the display will temporarily show RF 2 to indicate the mode change e Note that the transmission mode that is set in this manner will be remembered when the transmitter is powered off www americanmusical com Relay G55 Digital Wireless System Specifications System Frequency Band Compatible Channels Spatial Diversity with Digital Buffering Frequency Diversity Compander Free Design Frequency Response THD System Latency Operating Temp Range Construction Relay G55 Receiver TBP12 Transmitters Receiver RF Performance Monitoring RF Signal Strength Indicators Audio Level Meter on Receiver Dynamic Filter Squelch amp Pad adjustments Number of Receiver Antennas Receiver Format Receiver Power Requirements Output Impedance Sensiti
4. al battery charger the transmitters are not designed for batteries to be charged internally Because the transmitter s battery meter was calibrated for alkaline batteries they will not be as accurate in calculating the remaining battery life when using rechargeable batteries Note Carbon zinc batteries are not recommended RANGE AND INTERFERENCE TESTING The Relay G55 receiver s RF LED ladder provides a useful tool for selecting the clearest channels avoiding interference and preventing the wireless microphone systems from interfering with other wireless devices Using this function before operating the systems in new locations will promote trouble free and compatible performance gt S 5 BATTERY C1 E oO oO oO oO TRANSMITTER STATUS S m Detecting Interference with the RF Meter The Relay G55 receiver has an LED ladder stacked LED meter labeled RE which detects signals on the channel frequencies to which it is currently set for example when set to Line 6 channel 7 it detects frequencies with either a 2 433 GHz or 2 467 GHz center frequency These LED s are green when receiving signal from a Line 6 transmitter and red when the transmitter is off and interfering signals on that frequency are present If the receiver is on and the associated transmitter is off and one or more of the LEDs on the RF meter are lit red it is detecting a potentially interfering signal The more LEDs that are lit the stro
5. ay 655 manual Do not perform service operations beyond those described in the Relay 655 Manual Service is required when the apparatus has been damaged in any way such as e liquid has been spilled or objects have fallen into the apparatus the unit has been exposed to rain or moisture the unit does not operate normally or changes in performance in a significant way the unit is dropped or the enclosure is damaged Do not place near heat sources such as radiators heat registers or appliances which produce heat Guard against objects or liguids entering the device Do not use or place unit near water Do not step on cords Do not place items on top of cords so that they are pinched or leaned on Pay particu lar attention to the cord at the plug end and the point where it connects to the device Clean only with a damp cloth Only use attachments accessories specified by the manufacturer Prolonged listening at high volume levels may cause irreparable hearing loss and or damage Always be sure to practice safe listening G TTA 2009 1484 ie S 1773 11 6586 g X reser MM li www americanmusical com Thank you for your purchase of the Relay G55 wireless guitar system It is a sophisticated digital wireless system yet is easy to configure and use within minutes With its fully digital transmission the system provides features and benefits that diff
6. d the interferer and the front toward the transmitters www americanmusical com APPENDICES Troubleshooting Problem No Audio Transmitter Stays On Shorter Range Signal Dropouts Solution Switch on transmitter and or receiver Change transmitter batteries Confirm proper polarity of batteries in transmitter Transmitter audio muted press MUTE button to unmute Transmitter and receiver are on different channels set to same channel Receiver not connected to audio system or audio system off or muted Transmitter locked unlock and then turn off Antennas not connected to receiver check connections Receiver antennas not in line of sight raise them or clear obstructions Interference from other source change channel and see Near Far in manual Place receiver receiver antennas farther from WiFi or other 2 4 GHz source Too great a distance between transmitter and receiver move them closer Remote the antennas closer to transmitter with XD AD8 antenna distribution Keep receiver antennas higher in line of sight no doors or walls obstructing Changing Transmitters from RF2 default Relay G55 Mode to RFI Mode TBP12 Bodypack transmitters operate in a two frequency mode where the digital audio signal is encoded onto two RF carriers at different center frequencies this provides redundancy and reliability even when interfering signals are present The older Line 6 digital wireless systems such as the Relay G90
7. e when good red when low flashing when very low Audio LED is green for audio signal and red for clipping LCD Display Panel Backlight will light briefly when transmitter is turned on and when changing pages will stay lit when muted display also functions as programming window Belt Clip Can remove the center mounting screw to reposition or remove as necessary Open the battery door on the side of the bodypack and insert two AA batteries Slide the ON OFF switch to turn on Press and hold the SELECT button for two seconds and CH and a flashing channel number will appear on the LCD screen Press the VALUE button repeatedly in order to change the channel number to match the receiver Press and hold the SELECT button for two seconds to select and return to the main screen The transmitter is ready to use www americanmusical com ReLay G55 Receiver DETAILED SETUP For stand alone placement position the receiver on a level surface where the front panel controls and displays are visible e Connect the supplied DC 1g power supply to the 9 VDC In connector on the rear panel e To secure press a loop of the cable through the cable holder located above the connector to prevent accidental disconnection e Plug the power supply into an available AC outlet that provides voltage from 90 240 VAC e Place the supplied half wave antennas on the left and right BNC connectors marked Antenna A and Antenna B Rotate a quarter turn clockwise and the
8. er in some ways from previous generations of analog wireless but in most respects you use it just like other wireless systems By understanding a few simple concepts you ll be able to achieve superior audio quality a secure and dropout free signal and the ability to use multiple channels of wireless together without interference or other conflicts e Digital transmission in the 2 4 GHz band license free operation worldwide avoids interference from high power TV transmitters in the UHF band 24 bit digital technology provides the audio response of a cable without companding Up to 117 dBA dynamic range and 10 Hz 20 kHz bandwidth e 4th generation technology promotes reliable dropout free performance e Fast setup without the need for gain squelch or pilot adjustment e 12 channels supporting up to 12 simultaneous systems 300 foot 100 meter range e Accurate battery life indicators on both transmitter and receiver e Real time LED ladders display critical performance parameters including RF level audio level and transmitter battery level e Setup menus on transmitters provide additional parameter adjustments RECOMMENDATIONS FOR Best PERFORMANCE Maintain a clear line of sight between the transmitter and receiver antennas Typically the receiver antennas should be above head level Avoid placing the receiver in the bottom of a rack or cabinet unless remote antennas are employed e Avoid placing the receiver behind wall
9. h two will fit side by side on a rack tray When used by itself and placed on a surface the antennas are mounted on the rear and connected to the BNC connectors labeled Antenna A and Antenna B Multiple receivers can share one pair of antennas by using the XD AD8 antenna distribution system and P180 directional or P360 omnidirectional remote antennas Note When rack mounting receivers it is preferable to keep them and their associated antennas toward the top of the rack so that line of sight to the transmitters is unobstructed for the best range and performance Also keep receivers and equipment such as digital signal processors computers WiFi wireless routers and other devices that emit RF energy as separate from each other as possible Remote antennas become important especially when the distance is significant between the transmitters and receivers there are walls or other obstacles between them or when the receivers are permanently mounted in an equipment room or production vehicle and the transmitters are used at various and changing locations and distances To connect remote antennas to receivers via the XD AD8 use low loss 50 ohm coaxial cable with the appropriate BNC connector on each end Place the antennas with clear line of sight to the location where the transmitters will be used the Line 6 active antennas provide the convenience of mic stand mounting Attach one end of the cable to the antenna and run it the shortes
10. hen locked the user cannot mute or turn off the transmitter or change the frequency or other settings assuring that an error with a transmitter will not interrupt the event After use it is easy to unlock the transmitter to turn off or change settings When not locked the transmitter can be muted so that it keeps transmitting but audio is temporarily disabled BATT Oo Oo AUDIO a mure orr on To mute the TBP12 bodypack push and briefly hold the MUTE button on the top of the pack press again to unmute To lock the TBP12 bodypack turn it on and check the settings and check the receiver display for signal With two fingers press the SELECT and VALUE buttons at the same time and hold for two seconds The word LOCKED will appear on the top line of the display for a moment and then revert to the main screen Test by pressing any of the buttons to assure that it is locked Locking will also temporarily disable the OFF ON switch To unlock again hold the SELECT and VALUE buttons for two seconds Press together and hold SELECT VALUE Battery Level Indicator Functions Line 6 transmitters contain battery level indicators that can accurately assess the remaining battery life and show this information on both the transmitter and the associated receiver These indicators are calibrated to commercial alkaline batteries and can also provide useful information when used with rechargeable batteries 8 00 When the transmitter
11. indicate the audio is clipping MUTE lights red when transmitter is muted BATTERY lights green with all lit indicating full transmitter battery bottom LED turns red when 1 hour remains and flashes red when less than 40 minutes remains RF lights green to indicate transmitter signal strength quality with transmitter off red lights indicate interference on that channel Channel Select Encoder selects channels 1 through 12 Cable Tone Button engages a 25 foot cable model to provide the same tone you get when plugged in Receiver Power Switch Plug the power supply cable into the receiver and AC power Connect and position the antennas Connect with an audio cable to a mixer or similar Turn on the receiver power switch Turn the Channel Select Encoder to select a channel Press the Cable Tone Button if desired The receiver is ready to use www americanmusical com Bodypack Transmitter 8 0 MUTE OFFIONy SS Tr TJ N ES x Dany 0 Dm g 2 4GHz DIGITAL WIRELESS SYSTEM E i LENE S om RELAY TBP12 TRANSMITTER e 008WWA0901 53 FCC ID UOB916TBP12 IC 6768A 916TBP12 CE Designed in U S A VALUE a HOLD FOR SETUP SELECT VALUE Pat Pending Made in China ON OFF Switch Mini XLR TA4 Input Connector MUTE Switch SELECT VALUE Battery amp Audio Status LEDs Battery LED is blu
12. is turned on the bottom line of the display will show the remaining battery life in hours and minutes with a battery icon next to the time The remaining battery life is shown in increments of twenty minutes Hours 20 The initial time indicated just after the transmitter is turned on and for the first few minutes will ofren show more time than is actually remaining this is due to the characteristic of alkaline batteries to temporarily increase in voltage for a short time after a period of rest For best accuracy wait about twenty minutes after transmitter turn on to rely on the time indicator www americanmusical com BATTERY C1 oO oOo CI TRANSMITTER STATUS On the receiver the remaining battery life will be shown on the middle 5 position LED ladder which indicates remaining battery life in one hour steps When remaining battery life is more than five hours all five LEDs are lit with between four and five hours left four LEDs are lit and so on When less than one hour of battery life remains the bottom LED will turn from green to red and will begin to flash in the last 40 minutes of life NiMH nickel metal hydride batteries in the 2400 2800 mAh range are recommended as rechargeable batteries to use with the TBP12 transmitters Make sure that the batteries fit properly in the battery compartments to prevent damage since these batteries can vary in diameter and length They need to be charged in the correct extern
13. n position the antennas at an approximately 45 degree rabbit ears orientation e On the right side of the front panel turn on the power switch the LED will light e Turn the encoder to select the desired channel from 1 to 12 e To sync the Bodypack transmitter to the receiver follow the procedure in the following transmitter setup sections Note The receiver s RF channel will change immediately to a new frequency when the encoder is turned Note The Audio level meter has 4 lower green LEDs that correspond with specific audio input levels plus a red clip light in the top position From bottom to top LED 1 60 dB 2 30 dB 3 18 dB and 4 6 dB TBPI2 Bopypack TRANSMITTER DETAILED SETUP To begin press the small oval battery lock button on the left side of the transmitter same side as the antenna and OFF ON slide switch and slide the rubberized rectangular latch up toward the switch The battery door will flip open Insert two AA batteries noting the polarity markings on the metal insert on the inside of the door Close the battery door and slide the battery latch to the original position Slide the OFF ON switch to the On position the display will show the currently selected channel and remaining battery life Note Use alkaline batteries or rechargeable NiMH batteries in the 2400 2800 mAh range See Battery Level Indicator Functions for more details The Bodypack transmitter has a TA4M 4 conductor connector de
14. nel Use the channels in the following chart Channel Freguency A Frequency B Compatibility i Compatible with WiFi 1 6 amp 11 Compatible with WiFi 1 6 amp 11 Compatible with WiFi 1 6 amp 11 Compatible with WiFi 1 6 amp 11 Compatible with WiFi Compatible with WiFi patible with WiFi patible with WiFi 6 Compatible with WiFi 6 Compatible with WiFi 11 Note Cellular phones with Bluetooth or WiFi capabilities transmit signals in the 2 4 GHz band so are a potential source of interference when near the receiver antennas Use these functions of your phone at least a few feet away from the receivers when you are operating the wireless system www americanmusical com MINIMIZING NEAR FAR TRANSMITTER EFFECTS Line 6 digital wireless systems are designed so that a receiver only passes audio from a transmitter that is set to the same channel While other nearby transmitters and RF sources will not create audio in a receiver not on their channel under certain conditions they can have an effect on range When you are using several channels of wireless following some simple procedures will minimize any near far effects The Relay G55 receiver constantly monitors the signal from its transmitter and increases gain sensitivity as the transmitter moves farther away to maintain a good RF signal level The near far effect can happen when the transmitter is at a distance from the receiver s antennas and
15. nger the signal and the more it will interfere with the range and performance of a transmitter on that channel Note When the associated bodypack is on these same bars show the transmitter signal strength at the receiver s antennas During normal operation you should see four green bars and as you begin to exceed the range you will see fewer bars At three bars the signal will still be good and at two it should still be acceptable and provide reliable audio www americanmusical com Walk Testing the Performance Area When first setting up a wireless system in a new location it is good practice to position the receiver and its antennas where they will remain during the event and then walk the entire performing area with the audio system on and the transmitter active Talk and listen for signal dropouts or other problems and note where they are with respect to your antenna placement If you for some reason cannot turn on the audio system with one person to walk with the transmitter and another to monitor the receiver you can use the RF LED meter to find locations with low signal strength that could potentially cause problems You can also monitor the signal through a headset connected to the mixer if the receiver has been connected to it If you are using remote antennas with the XD AD8 antenna distribution system you can reposition them to obtain better coverage and improve or eliminate areas with lower signal strength With the
16. old of the MUTE button will mute the audio and the backlight will remain lit while it is muted The word MUTE will appear on the display Another quick push will un mute it CONNECTING THE ReLtay G55 RECEIVER The receiver features a balanced XLR and unbalanced tip sleeve quarter inch connector To connect to a mixing board or powered mixer use a microphone cable between the receiver output and the mixer s mic level input in the same way as you would connect a wired microphone To connect to an instrument amplifier or other audio equipment with a quarter inch connector such as a signal processor or effects unit use a quarter inch to quarter inch instrument cable this output is also mic level Note Do not use TRS or Stereo style connectors cables with the 1 4 inch connector as the ring is used for data transmission in factory setup and may cause computer like noise to be coupled into your audio Cable Tone The Cable Tone Button provides the user with the option to simulate the same roll off of high frequencies as a typical 25 foot guitar cable would provide So if your tone is a little bright compared to what you are used to when using a cable try the cable tone setting The cable tone is on when the button back light is on www americanmusical com SETTING OTHER TRANSMITTER FUNCTIONS Locking Unlocking and Muting the Transmitter TBP12 transmitters can be locked to prevent accidental button pushes from handling during use W
17. s When this is necessary the receiver s antennas should be remotely located as to be in sight of the transmitter Avoid placing the receiver in close proximity to RF generating equipment including computers wireless access points and microwave ovens e Point the antennas up and 45 degrees from vertical while avoiding touching metal objects like rack or rack rails Avoid blocking antennas in the transmitters Avoid placing the Bodypack transmitter in pockets SUPPLIED COMPONENTS Relay G55 Receiver receiver 9V 0 5A external universal power supply two 2 half wave articulating antennas user s manual TBP I2 Bodypack Transmitter two 2 AA alkaline batteries optional lavalier mic with windscreen and clip or headset mic with windscreen Optional carry case Available Accessories include XD AD8 antenna distribution system and remote antennas Relay G55 XD V55 Rack Mount Kit www americanmusical com ReLay G55 DIGITAL WiRELESs Quick SETUP Receiver 5 6 7 ANTENNA B N VDC IN UNBAL BALANCED Y O O LINES CHANNEL RELAY G55 2 4GHz DIGITAL WIRELESS GUITAR SYSTEM Antenna A amp B Input Connectors BNC Unbalanced 1 4 Inch and Balanced XLR Audio Output Connectors 9VDC Power Input Connector Transmitter Status LED Displays AUDIO lights green to indicate audio signal level top clip LED lights red to
18. signed to work with the included TA4 to 1 4 guitar cable Align this connector until it slides easily into the bodypack and press down until it is seated To remove press the button on the side of the TA4F connector and pull straight out Plug the 1 4 inch end of the cable into your guitar and you are ready to go www americanmusical com CH ie 8 00 CH CH i ic The transmitter must be set to the same channel as the receiver it is to work with if the receiver is on channel 9 the transmitter must also be set to channel 9 Press and hold the SELECT button for two seconds and the display will show CH on the top line and the currently selected channel on the second line Press the VALUE button to go through channels through 12 with each click incrementing to the next channel the channel number will flash At the desired channel stop and press and hold the SELECT button for two seconds or do not press any button for 15 seconds The transmitter will then change to the newly selected frequency and return to the main display Check the receiver display to confirm that the transmitter signal is being received Note The transmitter must be set to the same channel as the receiver it is to work with if the receiver is on channel 9 the transmitter must also be set to channel 9 Check the receiver s RF and Audio LED displays to confirm that the transmitter signal is being received When the transmitter is on a quick push and h
19. t possible distance to the antenna distribution system and from there to the Antenna A Antenna B connectors on the back of the receiver www americanmusical com Note As the RF signal travels through the cable to the receiver there will be some loss of signal level which at greater lengths and with higher loss cables can be significant With a passive antenna use the lowest loss cable you can find and try not to exceed about 15 feet of length With an active antenna that provides additional gain set it to the proper amplification for the cable length and try not to exceed 100 feet of cable When used properly remote antennas can increase range and lessen dropouts and interference conditions compared with having the half wave antennas directly connected to the receiver This is especially true when the receivers must be located in a non line of sight position or behind obstacles Omnidirectional antennas are best applied when the users will be transmitting from a wider area in front to the sides and even behind the antenna Directional antennas provide greater signal strength at the front of the antenna and greater rejection of the signal at the rear in the case of the P180 a cardioid coverage pattern of approximately 90 degrees with a rolloff to the sides Use them when the users are in a more confined area or not roaming as much They can also be used to minimize an interfering signal source by facing the back of the antenna towar
20. transmitters on different channels are being used near the antennas The strong signal from the nearby transmitters especially if they are close in frequency to the channel the receiver is set on can mask the signal from the distant transmitter and sometimes cause the audio from that transmitter to drop out For example if the transmitter on the same channel as the receiver is 50 feet away and another transmitter is 3 feet from the receiver s antenna the range of that distant transmitter might be affected Avoid this potential problem by positioning the receivers and their antennas at a more equal distance from the transmitters that are in use Solutions include e Making sure that any transmitter is at least 6 feet away from the receivers and that other RF sources such as WiFi routers are also at a distance from them e Placing the antennas higher which can lessen the difference in distance as well as increase line of sight with the distant transmitter e Using remote antennas with the XD AD8 antenna distribution system and placing them approximately equidistant from each group of transmitters for example positioning a remote antenna connected to Antenna A nearer to the closer transmitters and one connected to Antenna B nearer to the distant transmitters Moving the receiver associated with the distant transmitter closer to it AANTENNA MOUNTING AND PLACEMENT The Relay G55 receiver is typically used stand alone thoug
21. vity Image Rejection Antenna Distribution Antenna Impedance 2 4GHz ISM Band 12 Yes Yes 2 Frequencies per channel Yes 10 Hz 0 5 dB 20kHz 2 5 dB 0 03 typical lt 2 9 ms audio input to output 0 50 degrees C Extruded aluminum chassis Metal enclosure Yes via LCD screen and LED 5 Segment LED 5 Segment LED Yes None reguired 2 1 2 RU with included rack mount kit 9Vdc 500mA XLR 150 Ohms Balanced 1 4 1 kOhm Unbalanced 95 dBm 56 dB A and B 50 Ohms Transmitters Transmitter RF Output Power Battery Life Batteries Battery Display on Transmitter Dynamic Range TBP12 Maximum Audio Input Level TBP12 Bodypack Input Impedance TBP12 Bodypack Supplied Bias Voltage Transmitter Audio Polarity Pinout To TA4F Connector e Ground e 2 Positive Voltage e 3 Signal www americanmusical com 10 mW 8 hours 2 x AA Alkaline LCD Screen gt 117 dB 6 5 Vpp 1 3 M Ohms 5 VDC on Pin 2 of TA4F Connector Positive pressure on mic diaphragm produces positive voltage www americanmusical com www americanmusical com
22. www americanmusical com Relay G59 Digital Wireless Pilot s Handbook Manuel de pilotage Pilotenhandbuch Pilotenhandboek Manual del Piloto FIRES 40 00 0347 also available www line6 com manuals Rev B www americanmusical com t Safety Instructions CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN WARNING T0 REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK DO NOT REMOVE SCREWS NO USER SERVICEABLE PARTS INSIDE REFER SERVICING TO QUALIFIED SERVICE PERSONNEL WARNING T0 REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK DO NOT EXPOSE THE APPLIANCE TO RAIN OR MOISTURE CERTIFICATION THIS DEVICE COMPLIES WITH PART 15 OF THE FCC RULES OPERATION IS SUBJECT TO THE FOLLOWING TWO CONDITIONS 1 THIS DEVICE MAY NOT CAUSE HARMFUL INTERFERENCE AND 2 THIS DEVICE MUST ACCEPT ANY INTERFERENCE RECEIVED INCLUDING INTERFER ENCE THAT MAY CAUSE UNDESIRED OPERATION Warning Changes or modifications not expressly approved in writing by Line 6 may void the users authority to operate this equipment RF Exposure Statement This transmitter must not be co located or operated in conjunction with any other antenna or transmitter Note This equipment has been tested and found to comply with the limits for a Class B digital device pursuant to part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interfer ence in a residential installation This equipment generates uses and can radiate radio frequency energy
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