Powerwave Technologies OFRP300F Multicarrier Paging On-Frequency Radio Repeater User Manual Part 15

Powerwave Technologies Inc. Multicarrier Paging On-Frequency Radio Repeater Users Manual Part 15

Users Manual Part 15

DATE OF ISSUANCE:  22 JANUARY 1999          REPORT NUMBER:  980335      FCC ID:  IA9T100-900      PAGE 1 OF 22Partial reproduction of this document is prohibited without prior written consent of Acme Testing Inc.      ACME TESTING INC., 2002 VALLEY HWY, P.O. BOX 3, ACME, WASHINGTON  98220-0003  888-226-3837.REPORT OF MEASUREMENTSPART 15C - INTENTIONAL RADIATORDEVICE: 902 – 928 MHz FREQUENCYHOPPING TRANSMITTERMODEL: T100-900MANUFACTURER: OMNEX CONTROL SYSTEMS, INC.ADDRESS: #74 – 1833 COAST MERIDIAN ROADPORT COQUITLAM  BRITISH COLUMBIACANADA   V3C 6G5THE DATA CONTAINED IN THIS REPORT WASCOLLECTED ON 21 DECEMBER 1998 AND COMPILED BY:                                                                                             PAUL G. SLAVENSCHIEF EMC ENGINEERWORK ORDER: 10704
DATE OF ISSUANCE:  22 JANUARY 1999          REPORT NUMBER:  980335      FCC ID:  IA9T100-900      PAGE 2 OF 221. GENERAL............................................................................................................................................................41.1 PURPOSE.........................................................................................................................................................41.2 MANUFACTURER ............................................................................................................................................41.3 TEST LOCATION ..............................................................................................................................................41.4 TEST PERSONNEL............................................................................................................................................42. TEST RESULTS SUMMARY............................................................................................................................53. DESCRIPTION OF EQUIPMENT AND PERIPHERALS.............................................................................63.1 EQUIPMENT UNDER TEST (EUT)....................................................................................................................63.2 EUT PERIPHERALS .........................................................................................................................................63.3 DESCRIPTION OF INTERFACE CABLES..............................................................................................................63.4 MODE OF OPERATION DURING TESTS.............................................................................................................63.5 MODIFICATIONS REQUIRED FOR COMPLIANCE................................................................................................64. ANTENNA REQUIREMENT ............................................................................................................................74.1 REGULATION...................................................................................................................................................74.2 RESULT...........................................................................................................................................................75. CONDUCTED EMISSIONS TESTS .................................................................................................................85.1 TEST EQUIPMENT............................................................................................................................................85.2 PURPOSE.........................................................................................................................................................85.3 TEST PROCEDURES .........................................................................................................................................85.4 TEST RESULTS ................................................................................................................................................86. 20 DB BANDWIDTH AND CHANNEL SEPARATION.................................................................................96.1 REGULATION...................................................................................................................................................96.2 TEST EQUIPMENT............................................................................................................................................96.3 TEST PROCEDURES .........................................................................................................................................96.4 TEST RESULTS ................................................................................................................................................97. NUMBER OF CHANNELS..............................................................................................................................117.1 REGULATION.................................................................................................................................................117.2 TEST RESULTS ..............................................................................................................................................118. POWER OUTPUT.............................................................................................................................................128.1 REGULATION.................................................................................................................................................128.2 TEST EQUIPMENT..........................................................................................................................................128.3 TEST PROCEDURES .......................................................................................................................................128.4 TEST RESULTS ..............................................................................................................................................129. ANTENNA GAIN REQUIREMENTS.............................................................................................................139.1 REGULATION.................................................................................................................................................139.2 RESULT.........................................................................................................................................................1310. RADIO FREQUENCY EXPOSURE ...........................................................................................................1410.1 REGULATION.................................................................................................................................................1410.2 RESULT.........................................................................................................................................................1411. CONDUCTED SPURIOUS EMISSIONS....................................................................................................1511.1 REGULATION.................................................................................................................................................1511.2 TEST EQUIPMENT..........................................................................................................................................1511.3 TEST PROCEDURES .......................................................................................................................................1511.4 TEST RESULTS ..............................................................................................................................................16
DATE OF ISSUANCE:  22 JANUARY 1999          REPORT NUMBER:  980335      FCC ID:  IA9T100-900      PAGE 3 OF 22(Table of Contents Continued)12. RADIATED SPURIOUS EMISSIONS........................................................................................................1712.1 REGULATION.................................................................................................................................................1712.2 TEST EQUIPMENT..........................................................................................................................................1712.3 TEST PROCEDURES .......................................................................................................................................1812.4 TEST RESULTS ..............................................................................................................................................1913. CONTINUOUS DATA AND SHORT TRANSMISSIONS........................................................................2013.1 REGULATION.................................................................................................................................................2013.2 TEST RESULTS ..............................................................................................................................................2014. COORDINATION OF FREQUENCY HOPPING.....................................................................................2114.1 REGULATION.................................................................................................................................................2114.2 RESULT.........................................................................................................................................................2115. MISCELLANEOUS COMMENTS AND NOTES......................................................................................22
DATE OF ISSUANCE:  22 JANUARY 1999          REPORT NUMBER:  980335      FCC ID:  IA9T100-900      PAGE 4 OF 221. General1.1 PurposeThe purpose of this report is to show compliance to the FCC regulations for spread spectrumunlicensed devices operating under section 15.247 of the Code of Federal Regulations title 47.1.2 ManufacturerCompany Name: Omnex Control Systems, Inc.Contact: Jeff YeeStreet Address: #74 - 1833 Coast Meridian RoadCity/Province: Port Coquitlam  British ColumbiaCountry/Postal Code: Canada   V3C 6G5Telephone: 604 944-9247Fax: 604 944-9267E-mail: jyee@omnexcontrols.com1.3 Test locationCompany:   Acme Testing Inc.Street Address: 2002 Valley HighwayMailing Address: PO Box 3City/State/Zip: Acme  WA  98220-0003Laboratory: Test Site 2Telephone: 888 226-3837Fax: 360 595-2722E-mail: acmetest@acmetesting.comWeb: www.acmetesting.com1.4 Test PersonnelPaul G. Slavens, Chief EMC Engineer
DATE OF ISSUANCE:  22 JANUARY 1999          REPORT NUMBER:  980335      FCC ID:  IA9T100-900      PAGE 5 OF 222. Test Results SummarySummary of Test Results902 – 928 MHz Frequency Hopping Transmitter, T100-900Requirement                                             CFR Section                         Test Result                                   Radiated Spurs < 15.209 15.205(b) PASSConducted Emissions < 48.0 dBuV 15.207 PASSChannel Separation > 25 kHz 15.247(a1) PASSNumber of Channels > 50 15.247(a1i) PASS20 dB BW < 500 kHz 15.247(a1i) PASSMax Output Power < 1 W 15.247(b2) PASSAntenna Gain < 6 dBi 15.247(b3) PASSConducted Spurious >-20 dBc 15.247(c) PASSThe signed original of this report, supplied to the client, represents the only “official” copy.Retention of any additional copies (electronic or non-electronic media) is at Acme Testing’sdiscretion to meet internal requirements only.  The client has made the determination that EUTCondition, Characterization, and Mode of Operation are representative of production units, andmeet the requirements of the specifications referenced herein.Consistent with Industry practice, measurement and test equipment not directly involved inobtaining measurement results but having an impact on measurements (such as cable loss,antenna factors, etc.) are factored into the “Correction Factor” documented in certain test results.Instrumentation employed for testing meets tolerances consistent with known Industry Standardsand Regulations.The measurements contained in this report were made in accordance with the procedure ANSIC63.4 - 1992 and all applicable Public Notices received prior to the date of testing.  Allemissions from the device were found to be within the limits outlined in this report.  AcmeTesting assumes responsibility only for the accuracy and completeness of this data as it pertainsto the sample tested.____________________________                                                 Paul G. Slavens Date of IssuanceChief EMC Engineer
DATE OF ISSUANCE:  22 JANUARY 1999          REPORT NUMBER:  980335      FCC ID:  IA9T100-900      PAGE 6 OF 223. Description of Equipment and Peripherals3.1 Equipment Under Test (EUT)Device: 902 – 928 MHz Frequency Hopping TransmitterModel Number: T100-900Serial Number: 96829FCC ID: IA9T100-900Power: 6.0 volt batteryGrounding: LocalAntenna Distance: 3 meter3.2 EUT PeripheralsNot applicable, the EUT is a stand-alone device.3.3 Description of Interface CablesNot applicable, the EUT is a stand-alone device.3.4 Mode of Operation During TestsThe EUT was exercised by constantly transmitting.3.5 Modifications Required for Compliance1. None.
DATE OF ISSUANCE:  22 JANUARY 1999          REPORT NUMBER:  980335      FCC ID:  IA9T100-900      PAGE 7 OF 224. Antenna requirement4.1 RegulationAn intentional radiator shall be designed to ensure that no antenna other than that furnished bythe responsible party shall be used with the device.  The use of a permanently attached antenna orof an antenna that uses a unique coupling to the intentional radiator shall be considered sufficientto comply with the provisions of Part 15C.  The manufacturer may design the unit so that the usercan replace a broken antenna, but the use of a standard antenna jack or electrical connector isprohibited.  This requirement does not apply to carrier current devices or to devices operatedunder the provisions of Sections 15.211, 15.213, 15.217, 15.219, or 15.221.  Further, thisrequirement does not apply to intentional radiators that must be professionally installed, such asperimeter protection systems and some field disturbance sensors, or to other intentional radiatorswhich, in accordance with Section 15.31(d), must be measured at the installation site.  However,the installer shall be responsible for ensuring that the proper antenna is employed so that thelimits in this Part are not exceeded.4.2 ResultThe antenna consists 1/4 wave piece of 20 gauge wire. The antenna is contained inside thetransmitter housing and is not user accessible.
DATE OF ISSUANCE:  22 JANUARY 1999          REPORT NUMBER:  980335      FCC ID:  IA9T100-900      PAGE 8 OF 225. Conducted Emissions TestsTest Requirement:  FCC CFR47,  Part 15CTest Procedure:  ANSI C63.4:19925.1 Test Equipment Spectrum Analyzer: Hewlett-Packard 8566B, Serial Number 2410A-00168, Calibrated:  31 December 1997, Calibration due Date:  31 December 1998  RF Preselector:  Hewlett-Packard 85685A, Serial Number 2648A-00519, Calibrated:  31 December 1997, Calibration due Date:  31 December 1998 Quasi Peak Adapter: Hewlett-Packard 85650A, Serial Number 2043A-00327, Calibrated:  31 December 1997, Calibration due Date:  31 December 1998 Line Impedance Stabilization Network: EMCO 3825/2, Serial Number 9002-1601,Calibrated:27 August 1997, Calibration due Date:  31 December 19985.2 PurposeThe purpose of this test is to evaluate the level of conducted noise the EUT imposes on the ACmains.5.3 Test ProceduresFor tabletop equipment, the EUT is placed on a 1 meter by 1.5 meters wide and 0.8 meter highnonconductive table that is placed above the groundplane.  Floor standing equipment is placeddirectly on the groundplane. Any supplemental grounding mechanisms are connected, ifappropriate.  The EUT is connected to its associated peripherals, with any excess I/O cablingbundled to approximately 1 meter.  The EUT is connected to a dedicated LISN and all peripheralsare connected to a second separate LISN circuit.  The LISNs are bonded to the groundplane.Conducted Emissions Test Characteristics                                                                                         Frequency range 0.45 MHz - 30.0 MHzTest instrumentation resolution bandwidth 9 kHzLines Tested Line 1/Line 25.4 Test ResultsNot applicable the EUT is DC powered.
DATE OF ISSUANCE:  22 JANUARY 1999          REPORT NUMBER:  980335      FCC ID:  IA9T100-900      PAGE 9 OF 226. 20 dB Bandwidth and Channel Separation6.1 Regulation15.247(a1) Frequency hopping systems shall have hopping channel carrier frequencies separatedby a minimum of 25 kHz or the 20-dB bandwidth of the hopping channel, whichever is greater.The system shall hop to channel frequencies that are selected at the system-hopping rate from apseudorandomly ordered list of hopping frequencies.  Each frequency must be used equally onthe average by each transmitter.  The system receivers shall have input bandwidths that match thehopping channel bandwidths of their corresponding transmitters and shall shift frequencies insynchronization with the transmitted signals.6.2 Test Equipment Spectrum Analyzer: Hewlett-Packard 8566B, Serial Number 2410A-00168, Calibrated:  31 December 1997, Calibration due Date:  31 December 1998  RF Preselector:  Hewlett-Packard 85685A, Serial Number 2648A-00519, Calibrated:  31 December 1997, Calibration due Date:  31 December 19986.3 Test ProceduresThe RF output of the EUT was connected to the RF input port of the RF preselector through a 20-dB pad.  The following measurements were made with a RBW = 100 kHz and VBW = 3KHz.6.4 Test ResultsThe measured 20 dB bandwidth of the carrier frequency is 49 kHz.  The transmitter has hoppingchannel carrier frequencies separated by 400 kHz.The transmitter generates a Reed-Solomon pseudo random frequency hop sequence of length 64based on a pre-programmed seed.The transmitter can be set to operate on any one of 256 frequency channels in the 902-928MHzband. The frequencies are divided into four groups of 64 frequencies; each group using everyfourth available frequency. 63 out of 64 frequencies in a group are then used equally by thespread spectrum transmitter in a pseudo random sequence. 63 different sequences are availablefor use in each frequency group.
DATE OF ISSUANCE:  22 JANUARY 1999          REPORT NUMBER:  980335      FCC ID:  IA9T100-900      PAGE 10 OF 22FREQUENCY PLANHOP FREQ.NUMBER GROUP #1(MHz) GROUP #2(MHz) GROUP #3(MHz) GROUP #4(MHz)0 902.3 902.4 902.5 902.61 902.7 902.8 902.9 903.02 903.1 903.2 903.3 903.43 903.5 903.6 903.7 903.84 903.9 904.0 904.1 904.25 904.3 904.4 904.5 904.66 904.7 904.8 904.9 905.07 905.1 905.2 905.3 905.48 905.5 905.6 905.7 905.89 905.9 906.0 906.1 906.2XX Add 400 KHz per Frequency Hop Number54 923.8 923.9 924.0 924.155 924.2 924.3 924.4 924.556 924.6 924.7 924.8 924.957 925.0 925.1 925.2 925.358 925.4 925.5 925.6 925.759 925.8 925.9 926.0 926.160 926.2 926.3 926.4 926.561 926.6 927.7 926.8 926.962 927.0 927.1 927.2 927.363 927.4 927.5 927.6 927.7
DATE OF ISSUANCE:  22 JANUARY 1999          REPORT NUMBER:  980335      FCC ID:  IA9T100-900      PAGE 11 OF 227. Number of Channels7.1 Regulation15.247(a1i) For frequency hopping systems operating in the 902-928 MHz band: if the 20-dBbandwidth of the hopping channel is less than 250 kHz, the system shall use at least 50 hoppingfrequencies and the average time of occupancy on any frequency shall not be greater than 0.4seconds within a 20 second period; if the 20-dB bandwidth of the hopping channel is 250 kHz orgreater, the system shall use at least 25 hopping frequencies and the average time of occupancyon any frequency shall not be greater than 0.4 seconds within a 10 second period.  The maximumallowed 20-dB bandwidth of the hopping channel is 500 kHz.7.2 Test ResultsThe transmitter uses 63 hopping frequencies and has a 20 dB bandwidth of 49 kHz.  The averagetime of occupancy on any frequency is.317 seconds in a 20 second period.
DATE OF ISSUANCE:  22 JANUARY 1999          REPORT NUMBER:  980335      FCC ID:  IA9T100-900      PAGE 12 OF 228. Power Output8.1 Regulation15.247(b2) For frequency hopping systems operating in the 902-928 MHz band: 1 watt forsystems employing at least 50 hopping channels; and, 0.25 watts for systems employing less than50 hopping channels, but at least 25 hopping channels, as permitted under paragraph15.247(a)(1)(i).8.2 Test Equipment Spectrum Analyzer: Hewlett-Packard 8566B, Serial Number 2410A-00168, Calibrated: 31December 1997, Calibration due Date:  31 December 1998  RF Preselector:  Hewlett-Packard 85685, Serial Number 2648A-00519, Calibrated: 31December 1997, Calibration due Date:  31 December 19988.3 Test ProceduresThe RF output of the EUT was connected to the RF input port of the RF preselector through a 20-dB pad.  The following measurements were made with a RBW = 3 MHz and VBW = 3 MHz.8.4 Test ResultsMeasured maximum Peak Envelope Power was 10.4 dBm at Lowest Channel, 11.0 dBm atMiddle Channel, and 10.8 dBm at Highest Channel..
DATE OF ISSUANCE:  22 JANUARY 1999          REPORT NUMBER:  980335      FCC ID:  IA9T100-900      PAGE 13 OF 229. Antenna gain requirements9.1 Regulation15.247(b3) Except as shown below, if transmitting antennas of directional gain greater than 6 dBiare used the peak output power from the intentional radiator shall be reduced below the abovestated values by the amount in dB that the directional gain of the antenna exceeds 6 dBi.9.2 ResultThe equipment uses the 1/4 wavelength wire antenna described is section four of this report.  Thegain of this antenna should approach that of a monopole at 2.1 dBi.
DATE OF ISSUANCE:  22 JANUARY 1999          REPORT NUMBER:  980335      FCC ID:  IA9T100-900      PAGE 14 OF 2210. Radio Frequency exposure10.1 Regulation15.247(b4) Systems operating under the provisions of this section shall be operated in a mannerthat ensures that the public is not exposed to radio frequency energy levels in excess of theCommission's guidelines.  See §1.1307(b)(1) of this Chapter.10.2 ResultThe device uses an integral monopole antenna.  The devices EIRP is less than .3 watts.According to OET bulletin 65 supplement C no special instructions or warnings are necessary.
DATE OF ISSUANCE:  22 JANUARY 1999          REPORT NUMBER:  980335      FCC ID:  IA9T100-900      PAGE 15 OF 2211. Conducted Spurious Emissions11.1 Regulation15.247 (c) In any 100 kHz bandwidth outside the frequency band in which the spread spectrumintentional radiator is operating, the radio frequency power that is produced by the intentionalradiator shall be at least 20 dB below that in the 100 kHz bandwidth within the band that containsthe highest level of the desired power, based on either an RF conducted or a radiatedmeasurement.  Attenuation below the general limits specified in Section 15.209(a) is notrequired.  In addition, radiated emissions which fall in the restricted bands, as defined in Section15.205(a), must also comply with the radiated emission limits specified in Section 15.209(a) (seeSection 15.205(c).11.2 Test Equipment Spectrum Analyzer: Hewlett-Packard 8566B, Serial Number 2410A-00168, Calibrated: 31December 1997, Calibration due Date:  31 December 1998  RF Preselector:  Hewlett-Packard 85685, Serial Number 2648A-00519, Calibrated: 31December 1997, Calibration due Date:  31 December 1998 Quasi Peak Adapter: Hewlett-Packard 85650A, Serial Number 2043A-00327, Calibrated: 31December 1997, Calibration due Date:  31 December 199811.3 Test ProceduresThe RF output of the EUT was connected to the RF input port of the RF preselector through a 20dB pad.  The following measurements were made with a RBW = 100 kHz and VBW = 300 kHz.
DATE OF ISSUANCE:  22 JANUARY 1999          REPORT NUMBER:  980335      FCC ID:  IA9T100-900      PAGE 16 OF 2211.4 Test ResultsPRODUCT EMISSIONSLOWEST CHANNELFc = 902.6                                                                                                                                                            No FREQUENCY POWER RELATIVE LEVEL                        (MHz)                                      (dBm)                          (dBc)                                       1 1805.2 -36.0 -46.42 2707.8 -61.1 -71.5PRODUCT EMISSIONSLOWEST CHANNELFc = 915.0                                                                                                                                                            No FREQUENCY POWER RELATIVE LEVEL                        (MHz)                                      (dBm)                          (dBc)                                       1 1830.0 -34.2 -45.2PRODUCT EMISSIONSLOWEST CHANNELFc = 927.9                                                                                                                                                            No FREQUENCY POWER RELATIVE LEVEL                        (MHz)                                      (dBm)                          (dBc)                                       1 1855.0 -32.6 -43.4
DATE OF ISSUANCE:  22 JANUARY 1999          REPORT NUMBER:  980335      FCC ID:  IA9T100-900      PAGE 17 OF 2212. Radiated Spurious Emissions12.1 Regulation15.247 (c) In any 100 kHz bandwidth outside the frequency band in which the spread spectrumintentional radiator is operating, the radio frequency power that is produced by the intentionalradiator shall be at least 20 dB below that in the 100 kHz bandwidth within the band that containsthe highest level of the desired power, based on either an RF conducted or a radiatedmeasurement.  Attenuation below the general limits specified in Section 15.209(a) is notrequired.  In addition, radiated emissions which fall in the restricted bands, as defined in Section15.205(a), must also comply with the radiated emission limits specified in Section 15.209(a) (seeSection 15.205(c).12.2 Test Equipment Spectrum Analyzer: Hewlett-Packard 8566B, Serial Number 2410A-00168, Calibrated:31 December 1997, Calibration due Date:  31 December 1998  RF Preselector:  Hewlett-Packard 85685, Serial Number 2648A-00519, Calibrated:31 December 1997, Calibration due Date:  31 December 1998 Quasi Peak Adapter: Hewlett-Packard 85650A, Serial Number 2043A-00327, Calibrated:  31 December 1997, Calibration due Date:  31 December 1998 Line Impedance Stabilization Network: Rhode & Schwarz ESH2-Z5, Calibrated:  4 June 1997,Calibration due Date:  31 December 1998  Broadband Biconical Antenna (20 MHz to 200 MHz): EMCO 3110, Serial Number 1115,Calibrated:  27 July 1997, Calibration due Date:  31 December 1998  Broadband Log Periodic Antenna (200 MHz to 1000 MHz): EMCO 3146, Serial Number2853, Calibrated:  27 July 1997, Calibration due Date:  31 December 1998  EUT Turntable Position Controller:  EMCO 1061-3M 9003-1441, No Calibration Required  Antenna Mast:  EMCO 1051 9002-1457, No Calibration Required  2 GHz to 10 GHz Low Noise Preamplifier:  Milliwave 593-2898, Serial Number 2494,Calibrated:  19 June 1997, Calibration due Date:  31 December 1998 Double Ridge Guide Horn Antenna:  EMCO 3115, Serial Number 5534, Calibrated:  21 July1998, Calibration due Date:  21 November 1999
DATE OF ISSUANCE:  22 JANUARY 1999          REPORT NUMBER:  980335      FCC ID:  IA9T100-900      PAGE 18 OF 2212.3 Test ProceduresFor tabletop equipment, the EUT is placed on a 1 meter by 1.5 meters wide and 0.8 meter highnonconductive table that sits on a flush mounted metal turntable. Floor standing equipment isplaced directly on the flush mounted metal turntable.  The EUT is connected to its associatedperipherals with any excess I/O cabling bundled to approximately 1 meter.Preview tests are performed to determine the “worst case” mode of operation.  With the EUToperating in “worst case” mode, emissions from the unit are maximized by adjusting thepolarization and height of the receive antenna and rotating the EUT on the turntable.Manipulating the system cables also maximizes EUT emissions.Radiated Emissions Test Characteristics                                                                                            Frequency range 30 MHz – 10,000 MHz15.205 RESTRICTED BANDSONLYTest distance 3 mTest instrumentation resolution bandwidth 120 kHz (30 MHz - 1000 MHz)1 MHz (1000 MHz - 10000 MHz)Receive antenna scan height 1 m - 4 mReceive antenna polarization Vertical/HorizontalCalculation of average correction factor = 20 * log (20 mSec/100 mSec)= 20 * log .2= -14 dB20 milliseconds is the worst case on time for any 100 milliseconds time frame.
DATE OF ISSUANCE:  22 JANUARY 1999          REPORT NUMBER:  980335      FCC ID:  IA9T100-900      PAGE 19 OF 2212.4 Test ResultsThere were no detectable radiated emissions in the 15.205 Bands.
DATE OF ISSUANCE:  22 JANUARY 1999          REPORT NUMBER:  980335      FCC ID:  IA9T100-900      PAGE 20 OF 2213. Continuous Data and Short Transmissions13.1 Regulation15.247(g) Frequency hopping spread spectrum systems are not required to employ all availablehopping channels during each transmission.  However, the system, consisting of both thetransmitter and the receiver, must be designed to comply with all of the regulations in this sectionshould the transmitter be presented with a continuous data (or information) stream.  In addition, asystem employing short transmission bursts must comply with the definition of a frequencyhopping system and must distribute its transmissions over the minimum number of hoppingchannels specified in this section.13.2 Test ResultsWhen required to send continuous data, all frequencies of a sequence (63) are used one beforeany re-use of frequencies occurs.  When presented with a short burst, any one frequency is not re-used until all frequencies (63) of sequence have been used.  The sequence is not truncated and re-started.
DATE OF ISSUANCE:  22 JANUARY 1999          REPORT NUMBER:  980335      FCC ID:  IA9T100-900      PAGE 21 OF 2214. Coordination of Frequency Hopping14.1 Regulation15.247(h) The incorporation of intelligence within a frequency hopping spread spectrum systemthat permits the system to recognize other users within the spectrum band so that it individuallyand independently chooses and adapts its hopsets to avoid hopping on occupied channels ispermitted.  The coordination of frequency hopping systems in any other manner for the expresspurpose of avoiding the simultaneous occupancy of individual hopping frequencies by multipletransmitters is not permitted.14.2 ResultThis system does not incorporate intelligence to avoid interfering carriers.  It progresses linearlythrough the hopping sequence.
DATE OF ISSUANCE:  22 JANUARY 1999          REPORT NUMBER:  980335      FCC ID:  IA9T100-900      PAGE 22 OF 2215. Miscellaneous Comments and Notes1. None.

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