AIERIT24-460UHF MOBILE TRANSCEIVER

TYPE OF EXHIBIT:USERS MANUAL FCC PART:2.1033(c)(3) IC PART:RSP-100, Section 7.2(b) MANUFACTURER:RITRON, Inc. MODEL:RPM-460 TYPE OF UNIT:UHF Mobile Transceiver FCC ID:AIERIT24-460 IC ID:1084A-24460 DATE:March 15, 2006 RITRON RPM “60” SERIES FM MOBILE RADIO USER MANUAL Table of Contents_______________________________________________ INTRODUCTION OWNER INFORMATION STANDARD FEATURES ACCESSORIES RADIO CONTROLS OPERATION WARRANTY INTRODUCTION___________________________________________________ The RPM 60 Series Mobile is a programmable, two-way radio that can transmit and receive on any one of 15 channels in the professional FM communications band (VHF or UHF band). This radio features (2) programmable front panel buttons and a single digit alpha-numeric LED display. Each channel can be programmed to contain a unique set of operating frequencies and options. These options include industry standard signaling formats: Quiet Call, Digital Quiet Call, Selcall(5 Tone/7 Tone), DTMF and 2-Tone. INSPECTION The radio package includes a Ritron mobile radio, microphone, and mounting kit. Review the installation instructions in the mounting kit for a complete list of parts included. Examine all of the equipment immediately after delivery and report any damages to the shipping company. MODEL IDENTIFICATION RPM-160/RPM-460 The label attached to the back of the mobile includes both the FCC and Canadian identification numbers, radio serial number, radio model number, and operating frequency range. Ritron’s address, telephone number, and website are also included on the label. OWNER INFORMATION_____________________________________________ FCC REGULATIONS The FCC requires you to obtain a station license for your radios before using the equipment to transmit. The station licensee is responsible for ensuring that transmitter power, frequency, and deviation are within the limits specified by the station license. The station licensee is also responsible for proper operation and maintenance of his radio equipment. This includes checking the transmitter frequency and deviation periodically, using approved methods. Your RITRON dealer can help you obtain an FCC license. To receive an FCC license for VHF or UHF frequencies, you must submit FCC application Form 600. HOW TO OBTAIN AN FCC RADIO LICENSE Because your Ritron radio operates on Private Land Mobile frequencies, it is subject to the Rules and Regulations of the FCC, which requires all operators of these frequencies to obtain a station license before operating their equipment. Make application for your FCC license on FCC Forms 600 and 159. To have forms and instructions faxed to you by the FCC, call the FCC Fax-On-Demand system at 202-418-0177 from your fax machine; request Document 000600 & Form 159. To have Document 000600 & Form 159 mailed to you, call the FCC Forms Hotline at 800-418-FORM (800-418- 3676). For help with questions concerning the license application, contact the FCC at 888-CALL-FCC (888-225-5322). You must decide which radio frequency(s) you can operate on before filling out your application. For help determining your frequencies, call RITRON at 800-USA-1-USA (800-872-1872). SAFETY STANDARDS The FCC (with its action in General Docket 79-144, March 13, 1985) has adopted a safety standard for human exposure to radio frequency electromagnetic energy emitted by FCC regulated equipment. Ritron observes these guidelines and recommends that you do so also: • DO NOT operate a mobile radio transmitter when someone outside the vehicle is within two feet of the antenna. • DO NOT transmit with a fixed radio(base station, microwave, rural telephone RF equipment) or marine radio when someone is within two feet of the antenna. • DO NOT operate any radio transmitter unless all RF connectors are secure and any open connectors are properly terminated. • DO NOT operate radio equipment near electrical blasting caps or in an explosive atmosphere. • GROUND ALL RADIO EQUIPMENT according to RITRON’s installation sheet. • RITRON products should be repaired only by RITRON authorized personnel. RF EXPOSURE The RPM-460 has been evaluated for compliance with the maximum exposure limits for RF energy at the maximum power rating of the unit with a common unity gain quarterwave magnetic mount mobile antenna. To ensure compliance with the Occupational/Controlled maximum exposure limits, please observe the following: When the quarterwave remote magnetic mount antenna is used, mount the antenna in a location that will ensure that all persons will be at least 12 inches (30 cm) away from the antenna. Antennas other than a quarterwave magnetic mount antenna must be tested with the RPM-460 for RF exposure compliance in the environment in which it is to be used per the FCC’s OET Bulletin 65, Edition 97-01 or Industry Canada RSS-102. SAFETY PRECAUTIONS RADIO MOUNTING LOCATION Consider driver and passenger safety when you choose a location for the radio. Do not mount the unit overhead or on a sidewall unless you take special precautions, such as securing the radio with a safety strap. Improper installation increases the possibility that a car accident could dislodge the radio and make it a dangerous projectile. VEHICLE OPERATION • ELECTRONIC SYSTEMS – Check the vehicle’s manual for possible warnings about operating a two-way radio in a vehicle equipped with an electronic ignition or anti-skid braking system. • LIQUEFIED PETROLEUM (LP) GAS FUEL SYSTEM – Radio installation in a vehicle fueled by liquefied petroleum (LP) gas (with the LP gas container stored in a sealed-off space, such as a trunk) must conform to NFPA (National Fire Protection Association) standard 58. • BATTERY POWER – Avoid leaving the radio turned on for long periods when the engine is off, as this could run down the vehicle’s battery. RADIO CARE GENERAL • MOISTURE – The mobile is not waterproof and should not be exposed to rain, or immersed. • EXTREME HEAT – Like all electronic equipment, the mobile should not be subject…

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TYPE OF EXHIBIT:DESCRIPTION OF MEASUREMENT FACILITY FCC PART:2.948 IC PART:RSS-212 MANUFACTURER:RITRON, Inc. MODEL:RPM-460 TYPE OF UNIT:UHF Mobile Transceiver FCC ID:AIERIT24-460 IC ID:1084A-24460 DATE:March 15, 2006 The ERP and field strength of spurious emissions measurements filed with this application were made on a site certified by RITRON, Inc. Data pertaining to this site are on file with the FCC and Industry Canada. This site is used on a continuing basis exclusively by RITRON, Inc. and is utilized only for RF field strength measurements of equipment designed and manufactured by RITRON, Inc. It is not used for measurements by, or for, any other party on a contract basis or otherwise. All other measurements were taken at RITRON’s engineering laboratory in Carmel, IN. Sam L. Dulaney Chief Engineer RITRON, Inc. TYPE OF EXHIBIT:MANUFACTURER’S STATEMENT FCC PART: IC PART: MANUFACTURER:RITRON, Inc. MODEL:RPM-460 TYPE OF UNIT:UHF Mobile Transceiver FCC ID:AIERIT24-460 IC ID:1084A-24460 DATE:March 15, 2006 The RITRON model RPM-460 is a UHF mobile transceiver designed for operation on either 12.5 kHz channels or 25 kHz channels. Its output power is variable from 5.0 watts to 40.0 watts. This product will be manufactured and marketed on a continuing basis in the United States of America by the applicant, RITRON, Inc. of Carmel, IN. TYPE OF EXHIBIT:STATEMENT OF CERTIFYING ENGINEER FCC PART:2.947 IC PART: MANUFACTURER:RITRON, Inc. MODEL:RPM-460 TYPE OF UNIT:UHF Mobile Transceiver FCC ID:AIERIT24-460 DATE:March 15, 2006 I, Sam L. Dulaney, am now, and have been for the past seven years employed as the Chief Engineer with RITRON, Inc. I have been employed in the two-way radio industry for the past 25 years. I received a BSEE degree from West Virginia University in 1978 and an MSEE degree from West Virginia University in 1980. I hereby certify that all the measurements and data herein were taken by me, or under my direct supervision and that they were obtained using sound and accepted engineering principles and that they accurately reflect the performance and characteristics of the unit tested. Further, I attest that manufacturing controls exist such that this data are representative of units which will be manufactured by RITRON. Sam L. Dulaney Chief Engineer RITRON, Inc. TYPE OF EXHIBIT:STATEMENT CONCERNING SPECTRUM EFFICIENCY FCC PART:90.203(j)(3) IC PART:RSS-119, Section 5.5.1 MANUFACTURER:RITRON, Inc. MODEL:RPM-460 TYPE OF UNIT:UHF Mobile Transceiver FCC ID:AIERIT24-460 IC ID:1084A-24460 DATE:March 15, 2006 I Sam L. Dulaney, Chief Engineer for RITRON, Inc., certify that this product, DTX-254, meets a spectrum efficiency standard of one voice channel per 12.5 kHz of channel bandwidth. Sam L. Dulaney Chief Engineer RITRON, Inc. TYPE OF EXHIBIT:ANTI-DRUG ABUSE CERTIFICATION FCC PART:1.2002(b) IC PART: MANUFACTURER:RITRON, Inc. MODEL:RPM-460 TYPE OF UNIT:UHF Mobile Transceiver FCC ID:AIERIT24-460 IC ID:1084A-24460 DATE:March 15, 2006 I, Sam L. Dulaney, certify that RITRON is not subject to a denial of Federal benefits, that include FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 862 because of a conviction for possession or distribution of a controlled substance. Sam L. Dulaney Chief Engineer RITRON, Inc.

Ritron, Inc. 505 West Carmel Dr. Carmel, IN 46032 Federal Communciations Commission Authorization & Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 March 28, 2006 Re: Request for Confidentiality for FCC ID: AIERIT24-460 Dear Sir/Madam: Pursuant to Sections 0.457(d)(1)(ii) and 0.459 of the Commission’s Rules, Ritron, Inc. hereby formally requests confidential treatment of some of the information accompanying this Application as listed below: Block Diagram Schematics Operational Description Semiconductor List Tune-up Procedure These materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these materials might be harmful to the Ritron, Inc. and provide unjustified benefits to its competitors. We appreciate you attention to this matter. Regards, Sam L. Dulaney Chief Engineer Ritron, Inc.

TYPE OF EXHIBIT:PHOTOGRAPHS-EXTERNAL FCC PART:2.1033(c)(12) IC PART:RSP-100, Section 7.2(d) MANUFACTURER:RITRON, Inc. MODEL:RPM-460 TYPE OF UNIT:UHF Mobile Transceiver FCC ID:AIERIT24-460 IC ID:1084A-24460 DATE:March 15, 2006 External views of the unit follow:

TYPE OF EXHIBIT:EQUPIMENT LABEL-LOCATION FCC PART:2.1033(c)(11) IC PART:RSS-119, Section 5.1 MANUFACTURER:RITRON, Inc. MODEL:RPM-460 TYPE OF UNIT:UHF Mobile Transceiver FCC ID:AIERIT24-460 IC ID:1084A-24460 DATE:March 15, 2006 Photograph of unit showing location of equipment label follows: Identification Label

TYPE OF EXHIBIT:EQUPIMENT LABEL-SAMPLE FCC PART:2.1033(c)(11) IC PART:RSS-119, Section 5.1 MANUFACTURER:RITRON, Inc. MODEL:RPM-460 TYPE OF UNIT:UHF Mobile Transceiver FCC ID:AIERIT24-460 IC ID:1084A-24460 DATE:March 15, 2006 Drawing of label showing a) certification number, b) manufacturer’s name and c) model name or number follows. RITRON, INC. 505 West Carmel Drive Carmel, IN 46032 DRAWN BY CHK’D SCALE DATE MATERIAL DRAWING NO. REVISIONS NO.DATEBY 1 2 3 4 TOLERANCES (EXCEPT AS NOTED) DECIMAL ± FRACTIONAL ± ANGULAR NOTES: 1.MATERIAL IS “TAMPER-PROOF” DESCTRUCTIVE FLEXCON MYLAR #MM-150-S, .003” THICK WITH HI-TACK ADHESIVE BACKING AND .001 THICK MATTE MYLAR LAMINATE FINISH. 2.BLACK BACKGROUND WITH SILVER GRAPHICS. 3.AREA FOR SERIAL NUMBER TO HAVE SILVER BACKGROUND WITH BLACK SERIAL NUMBERS. 4.VENDOR TO SUPPLY PROOF FOR RITRON PRIOR TO INITIAL PRODUCTION. 5.ALL CHARACTERS ARE HELVETICA TYPE STYLE, 6 POINT TYPE SIZE UNLESS OTHERWISE NOTED. 6.“Designed and Manufactured in Carmel, Indiana USA” is HELVETICA TYPE STYLE, 5 POINT TYPE 7.CHARACTERS WITHIN AREA FOR FCC ARE HELVETICA BOLD TYPE, 6 POINT TYPE SIZE. 8.THE RITRON LOGO GRAPHIC SHOWN ON THIS DRAWING IS FOR REFERENCE ONLY. RITRON WILL SUPPLY ORIGINAL ARTWORK. SERIAL LABEL / FCC ID: AIERIT24-460 MODEL: RPM-460 MAP2:1 03/08/06 505 West Carmel Drive, Carmel, IN 46032 USA Phone: 317-846-1201www.ritron.com Model: RPM-460450-470 MHz FCC ID:AIERIT24-460Serial Nbr: 12345 IC:1084A-RIT24460 Designed and Manufactured in Carmel, Indiana USA 505 West Carmel Drive, Carmel, IN 46032 USA Phone: 317-846-1201www.ritron.com Model: RPM-460450-470 MHz FCC ID:AIERIT24-460 Serial Nbr: 12345 IC:1084A-RIT24460 Designed and Manufactured in Carmel, Indiana USA 0.99” 1.99” AREA FOR FCC ID SEE NOTE 7 AREA FOR SERIAL NUMBER SEE NOTE 3 03/17/06 MAP

TYPE OF EXHIBIT:PHOTOGRAPHS-INTERNAL FCC PART:2.1033(c)(12) IC PART:RSP-100, Section 5.1(e) MANUFACTURER:RITRON, Inc. MODEL:RPM-460 TYPE OF UNIT:UHF Mobile Transceiver FCC ID:AIERIT24-460 IC ID:1084A-24460 DATE:March 15, 2006 Internal views of the unit follow:

1 TYPE OF EXHIBIT:RF EXPOSURE EVALUATION FCC PART:1.1310 IC PART:RSS-119, Section 9, RSS-102 MANUFACTURER:RITRON, Inc. MODEL:RPM-460 TYPE OF UNIT:UHF Mobile Transceiver FCC ID:AIERIT24-460 IC ID:1084A-RIT24460 DATE:March 15, 2006 PROCEDURE: Because this product is used as a mobile device, an RF evaluation was done. The RF evaluation entailed testing the unit on RITRON’S 3-meter range to determine EIRP and then calculating the minimum safe distance from the antenna necessary to ensure compliance with the appropriate RF exposure limits. 1. The measurement for effective radiated power was taken at the RITRON, Inc. 3-meter test site, details of which are on file with the FCC and Industry Canada. 2. The DUT was aligned for transmitter operation on lower, middle and upper band edge frequenices at the 40.0 watt maximum output power rating of the RPM-460 per the tune-up procedure outlined in the Maintenance Manual. The unit was then terminated at the antenna port in a quarterwave magnetic mount antenna which is typical of what might be used with this product. (The user may connect other antennas, however.) 3. All field strength measurements were made with the Hewlett-Packard Model 8560E Spectrum Analyzer and an Electro-Metrics EM-6924 adjustable dipole antenna tuned to the carrier frequency. 2 TYPE OF EXHIBIT:RF EXPOSURE EVALUATION FCC PART:1.1310 IC PART:RSS-119, Section 9, RSS-102 MANUFACTURER:RITRON, Inc. MODEL:RPM-460 TYPE OF UNIT:UHF Mobile Transceiver FCC ID:AIERIT24-460 IC ID:1084A-RIT24460 DATE:March 15, 2006 PROCEDURE (CONT.): 4. The quarterwave antenna was connected to the DUT via its cable and tested above a 0.5m x 0.5 m ground plane. The height of the field strength measurement antenna and the azimuth orientation of the antenna were varied to provide maximum field strength. The maximum levels were noted. 5. A substitution antenna, an Electro-Metrics EM-6924 adjustable dipole, was substituted for the quarterwave antenna at the RPM-460’s previous location. An RF signal generator was set for the frequency of the DUT with the level at the substitution antenna noted. 6. The height of the receiving antenna was adjusted for maximum signal strength. The level at the receiving antenna was noted. 3 TYPE OF EXHIBIT:RF EXPOSURE EVALUATION FCC PART:1.1310 IC PART:RSS-119, Section 9, RSS-102 MANUFACTURER:RITRON, Inc. MODEL:RPM-460 TYPE OF UNIT:UHF Mobile Transceiver FCC ID:AIERIT24-460 IC ID:1084A-RIT24460 DATE:March 15, 2006 EQUATIONS FOR EIRP: The substitution antenna is specified from the manufacturer in terms of antenna factor rather than antenna gain. The conversion is: Ga(dbd) = 20 log f (MHz) – AF(dB) – 31.9 The effective radiated power (ERP) is then: ERP(dBm) = Pr(dBm) + Pgen(dBm) – Ps(dBm) – Ga(dBd) Where: Pr is the power level of the radio’s emission at the receiving antenna output. Pgen is the RF signal generator level at the substitution antenna input. Ps is the power level of the substitution antenna emission at the receiving antenna output. Ga is the gain of the substitution antenna. The ERP is converted to watts from dBm by: ERP(watts) = antilog 10 ((ERP(dBm) – 30)/10) And finally, ERP is converted to EIRP (isotropic radiator) by: EIRP = 1.64 ERP 4 TYPE OF EXHIBIT:RF EXPOSURE EVALUATION FCC PART:1.1310 IC PART:RSS-119, Section 9, RSS-102 MANUFACTURER:RITRON, Inc. MODEL:RPM-460 TYPE OF UNIT:UHF Mobile Transceiver FCC ID:AIERIT24-460 IC ID:1084A-RIT24460 DATE:March 15, 2006 RESULTS FOR EIRP: FrequencyPr PgenPs GaERPEIRP (dBm) (dBm) (dBm)(dBd) (dBm) (watts) 450.1 MHz+16.0 0.0-27.3 0.1+43.233.5 460.1 MHz+14.7 0.0-27.5 0.1+42.126.6 469.1 MHz+14.5 0.0-27.9 0.1+42.327.9 DETERMINING MPE DISTANCE: Power density is related to EIRP: S(W/m 2 ) = EIRP(W)/4πr 2 where r is the distance from the source in meters. Rearranging for distance: _________ r = √(EIRP/4πS) The MPE (maximum permissible exposure) for a device operating in a Occupational/Controlled Exposure environment is f(MHz)/300 mW/cm 2 . Converting to W/m 2 , the limit becomes f(MHz)/30 W/m 2 . The MPE limit is substituted for S and EIRP is entered in the above equation. 5 TYPE OF EXHIBIT:RF EXPOSURE EVALUATION FCC PART:1.1310 IC PART:RSS-119, Section 9, RSS-102 MANUFACTURER:RITRON, Inc. MODEL:RPM-460 TYPE OF UNIT:UHF Mobile Transceiver FCC ID:AIERIT24-460 IC ID:1084A-RIT24460 DATE:March 15, 2006 RESULTS FOR MPE: FrequencyEIRPDuty CycleS limitDistance Distance (watts) %W/m 2 cm in 450.1 MHz33.5 50 15.0 30 12 460.1 MHz26.6 5015.3 26 10 469.1 MHz27.9 5015.6 27 11 RF WARNING STATEMENT: The following statement appears in the Users Manual regarding RF safety: The RPM-460 has been evaluated for compliance with the maximum exposure limits for RF energy at the maximum power rating of the unit with a common unity gain quarterwave magnetic mount mobile antenna. To ensure compliance with the Occupational/Controlled maximum exposure limits, please observe the following: When the quarterwave remote magnetic mount antenna is used, mount the antenna in a location that will ensure that all persons will be at least 12 inches (30 cm) away from the antenna. Antennas other than a quarterwave magnetic mount antenna must be tested with the RPM-460 for RF exposure compliance in the environment in which it is to be used per the FCC’s OET Bulletin 65, Edition 97-01 or Industry Canada RSS-102.

1 TYPE OF EXHIBIT:LIST OF ATTACHED EXHIBITS FCC PART:2.1033(c)(14) IC PART: MANUFACTURER:RITRON, Inc. MODEL:RPM-460 TYPE OF UNIT:UHF Mobile Transceiver FCC ID:AIERIT24-460 IC ID:1084A-RIT24460 DATE:March 15, 2006 The following exhibits are contained in this file: Description of ExhibitPage List of Test Equipment Used3 Description of Measurement Facility4 Interface Impedances5 Radio Frequency Output Power6 Modulator Response8 Clipper Filter Response11 Modulation Limiting Curves13 Occupied Bandwidth16 Bandwidth Calculations/Modulation Types19 Conducted Spurious Emissions-Transmitter20 Conducted Spurious Emissions-Receiver24 Field Strength of Spurious Emissions-Transmitter26 2 TYPE OF EXHIBIT:LIST OF ATTACHED EXHIBITS FCC PART:2.1033(c)(14) IC PART: MANUFACTURER:RITRON, Inc. MODEL:RPM-460 TYPE OF UNIT:UHF Mobile Transceiver FCC ID:AIERIT24-460 IC ID:1084A-RIT24460 DATE:March 15, 2006 Description of ExhibitPage Field Strength of Spurious Emissions-Receiver30 Frequency Stability vs Temperature33 Frequency Stability vs Supply Voltage35 Transient Frequency Behavior37 3 TYPE OF EXHIBIT:LIST OF TEST EQUIPMENT USED FCC PART:2.947(d) IC PART: MANUFACTURER:RITRON, Inc. MODEL:RPM-460 TYPE OF UNIT:UHF Mobile Transceiver FCC ID:AIERIT24-460 IC ID:1084A-RIT24460 DATE:March 15, 2006 All measurements were conducted with one or more of the following pieces of equipment: ITEMMANUFACTURERMODEL NO.SERIAL NO. DC Power SupplyAstronVS 12M90071655 MultimeterFluke456967029 MultimeterBK Precision2704A234-008455 WattmeterTelewave61215081 RF Test SetHewlett-Packard8920A01498 Spectrum AnalyzerAdvantestR3265A75060189 Spectrum AnalyzerHewlett-Packard8560E3720A02980 Storage ScopeFluke/PhilipsPM3335DM630034 Temp. ChamberDelta Design3900 CL0-52-R Frequency CounterHewlett-Packard5383A1716A01417 Audio Test SetAudio PrecisionSYS-322ASYS1-33641 ThermocoupleTriplett320-G/P 4 TYPE OF EXHIBIT:DESCRIPTION OF MEASUREMENT FACILITY FCC PART:2.948 IC PART: MANUFACTURER:RITRON, Inc. MODEL:RPM-460 TYPE OF UNIT:UHF Mobile Transceiver FCC ID:AIERIT24-460 IC ID:1084A-RIT24460 DATE:March 15, 2006 The Field Strength measurements filed with this application were made on a site certified by RITRON, Inc. Data pertaining to this side are on file with the FCC and Industry Canada and are current. This site is used on a continuing basis exclusively by RITRON, Inc. and is utilized only for RF Field Strength measurements of equipment designed and manufactured by RITRON, Inc. It is not used for measurements by, or for, any other party on a contract basis or otherwise. All other measurements were taken at RITRON’s Engineering Laboratory in Carmel, IN. Sam L. Dulaney Chief Engineer RITRON, Inc. 5 TYPE OF EXHIBIT:INTERFACE IMPEDANCES FCC PART: IC PART:RSS-119, Section 5.6 MANUFACTURER:RITRON, Inc. MODEL:RPM-460 TYPE OF UNIT:UHF Mobile Transceiver FCC ID:AIERIT24-460 IC ID:1084A-RIT24460 DATE:March 15, 2006 Audio Input: The nominal input impedance of the audio inputs in 10k-ohms resistive. Audio Output: The nominal audio output impedance of the audio power amplifier is 0 ohms resistive with a nominal load impedance of 8 ohms resistive. RF Output The nominal load impedance for the RF output is 50 ohms resistive. 6 TYPE OF EXHIBIT:RADIO FREQUENCY OUTPUT POWER FCC PART:2.1046(a) IC PART:RSS-199, Section 6.2 MANUFACTURER:RITRON, Inc. MODEL:RPM-460 TYPE OF UNIT:UHF Mobile Transceiver FCC ID:AIERIT24-460 IC ID:1084A-RIT24460 DATE:March 15, 2006 PROCEDURE: 1. The RPM-460 was aligned for transmitter operation at full rated power per the tune-up procedure outlined in the Maintenance manual for frequencies at the lower, middle and upper band edges. 2. Power was supplied to the RPM-460 by an Astron VS 12M Power Supply. The RPM-460 was connected to a Bird 6154 Thermaline Wattmeter used to measure the RF carrier power. The wattmeter provides a resistive 50-ohm termination at the frequencies and power levels used for this test. 3. A B&K Digital Multimeter was connected in series with the drain lead of the final RF output transistor and set to measure current (Id). A Fluke 45 Digital Multimeter was used to measure the final RF output stage power control voltage (Vc) and drain voltage (Vd). 4. Measurements were taken at various power levels between 5.0 watts and 40.0 watts. 7 TYPE OF EXHIBIT:RADIO FREQUENCY OUTPUT POWER FCC PART:2.1046(a) IC PART:RSS-119, Section 6.2 MANUFACTURER:RITRON, Inc. MODEL:RPM-460 TYPE OF UNIT:UHF Mobile Transceiver FCC ID:AIERIT24-460 IC ID:1084A-RIT24460 DATE:March 15, 2006 RESULTS: Frequency (MHz)Po (watts)Vc (V)Vd (V)Id (A) 450.100 5.03.213.71.7 450.10015.03.413.73.4 450.10030.03.713.76.1 450.10040.04.613.77.7 460.100 5.03.413.71.9 460.10015.03.613.73.7 460.10030.03.913.76.3 460.10040.04.813.77.8 469.100 5.03.413.71.8 469.10015.03.613.73.7 469.10030.04.013.76.0 469.10040.04.313.77.6 8 TYPE OF EXHIBIT:MODULATOR RESPONSE FCC PART:2.1047(a) IC PART:RSS-119, Section 6.6 MANUFACTURER:RITRON, Inc. MODEL:RPM-460 TYPE OF UNIT:UHF Mobile Transceiver FCC ID:AIERIT24-460 IC ID:1084A-RIT24460 DATE:March 15, 2006 PROCEDURE: 1. The RPM-460 was aligned for transmitter operation at 460.100 MHz at full rated power per the tune-up procedure outlined in the Maintenance manual. 2. The response was measured from the microphone input to the output of the audio processing IC where it connects to the modulator. 3. The audio test set was swept in frequency from 200 Hz to 20 kHz and the results noted. The test was run for the audio processor IC set for both 12.5 kHz channel and 25 kHz channel operation. 9 TYPE OF EXHIBIT:MODULATOR RESPONSE FCC PART:2.1047(a) IC PART:RSS-119, Section 6.6 MANUFACTURER:RITRON, Inc. MODEL:RPM-460 TYPE OF UNIT:UHF Mobile Transceiver FCC ID:AIERIT24-460 IC ID:1084A-RIT24460 DATE:March 15, 2006 RESULTS:12.5 kHz channel spacing -40 +10 -35 -30 -25 -20 -15 -10 -5 +0 +5 d B r -40 +10 -35 -30 -25 -20 -15 -10 -5 +0 +5 d B r 20020k5001k2k5k10k Hz TTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTT 10 TYPE OF E…

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