AIERIT42-165VHF Transceiver Module

RITRON, INC. PRELIMINARY 11-14 RITRON MODEL: DTX-165-RR-SIG PROGRAMMABLE FM TRANSCEIVER MODULE MAINTENANCE & OPERATING MANUAL PRELIMINARY! FOR USE ONLY BY AUTHORIZED SERVICE/MAINTENANCE PERSONNEL TABLE OF CONTENTS I DTX MODULES 1 INTRODUCTION 1.1 GENERAL 1.2 MODEL IDENTIFICATION 1.3 FCC REGULATIONS 2 MODELS DTX-165 AND DTX-265 SPECIFICATIONS 2.1 GENERAL 2.2 TRANSMITTER 2.3 RECEIVER 3 DTX-165-RR-SIG INPUT/OUTPUT CONNECTOR 4 ACCESSORIES 5 OPERATION 5.1 CHANNEL SELECTION 5.2 POWER SUPPLY VOLTAGE 5.3 CURRENT DRAIN VS. SUPPLY VOLTAGE 5.4 DUTY CYCLE/KEY-DOWN LIMITATIONS 5.5 OPERATING MODES 5.6 RECEIVER SELF-QUIETING SPUR (BIRDIE) FREQUENCIES 6 PROGRAMMING 6.1 PC PROGRAMMING KIT 6.2 LOADING THE PROGRAMMING SOFTWARE 6.3 COMPUTER SOFTWARE COPYRIGHTS 6.4 USING THE PROGRAMMING SOFTWARE 6.5 PROGRAMMER MENUS II MAINTENANCE 7 IMPORTANT MAINTENANCE INFORMATION 8 THEORY OF OPERATION 8.1 DTX-165 RF BOARD 8.2 CONTROL/LOADER BOARD 9 HARDWARE OPTIONS 9.1 CONTROL/LOADER BOARD OPTIONS 9.2 RF BOARD OPTIONS 10 ALIGNMENT 10.1 REQUIRED TEST EQUIPMENT 10.2 ALIGNMENT PROCEDURE I DTX-165-RR-SIG MODULES 1 INTRODUCTION 1.1 GENERAL The RITRON DTX-165-RR-SIG module is a programmable 2-way radios, which operates in the VHF professional FM communications band. Each of eight channels can be programmed to contain a unique set of operating frequencies. The DTX-165-RR-SIG module is made up of two PC boards, an RF board and a control/loader board. These two boards are enclosed in a metal case with two connectors on one end; a 50 ohm BNC connector for connection to an antenna and a DB-15 sub-miniature connector for control input/output and a power input connector on the other end. 1.2 MODEL IDENTIFICATION The part number system for the DTX-165-RR-SIG module is: The module has a part number in the form of “DTX-A65-RR-SIG” where: A is the major frequency band designator: 1=VHF (136-174 MHz bands) 2=216-222 MHz band 3=340-400 MHz bands 4=UHF (400-430 MHz and 450-470 MHz bands) 1.3 FCC REGULATIONS 1.3.1 LICENSING For those frequency bands governed by FCC rules, the FCC requires that the radio owner obtain a station license for his radio before using the equipment to transmit, but does not require an operating license or permit. The station licensee is responsible for proper operation and maintenance of his radio equipment, and for ensuring that transmitter power, frequency and deviation are within the limits specified by the station license. This includes checking the transmitter frequency and deviation periodically using appropriate methods. Note also, that wideband operation (25/30 kHz channel bandwidth) may not be permitted. 1.3.2 PRODUCT CERTIFICATION The DTX-165-RR-SIG module is certified by the FCC for operation in the United States and by Industry Canada for operation in Canada on certain frequency bands and sub-bands for transmission of either voice or data signals when aligned according to the alignment procedure for the proper bandwidth and when operated as a complete unit in the metal case. Operation of the RF board as a stand-alone unit or in combination with any other equipment, in any mode outside the alignment procedure, or with the clipper filter electronically disabled will require the filing of a new type acceptance application with the FCC by the user. 1.3.3 SAFETY STANDARDS-RF EXPOSURE (DTX-165) RF ENERGY EXPOSURE AWARENESS AND CONTROL INFORMATION, AND OPERATIONAL INSTRUCTIONS FOR FCC OCCUPATIONAL USE REQUIREMENTS: BEFORE USING THIS 2-WAY RADIO, READ THIS IMPORTANT RF ENERGY AWARENESS AND CONTROL INFORMATION AND OPERATIONAL INSTRUCTIONS TO ENSURE COMPLIANCE WITH THE FCC’S AND IC’S RF EXPOSURE GUIDELINES. NOTICE: This radio is intended for use in general population/uncontrolled conditions. This 2-way radio uses electromagnetic energy in the radio frequency (RF) spectrum to provide communications between two or more users over a distance. It uses radio frequency (RF) energy or radio waves to send and receive calls. RF energy is one form of electromagnetic energy. Other forms include, but are not limited to, electric power, sunlight and x-rays. RF energy, however, should not be confused with these other forms of electromagnetic energy, which when used improperly can cause biological damage. Very high levels of x-rays, for example, can damage tissues and genetic material. Experts in science, engineering, medicine, health and industry work with organizations to develop standards for exposure to RF energy. These standards provide recommended levels of RF exposure for both workers and the general public. These recommended RF exposure levels include substantial margins of protection. All 2-way radios marketed in North America are designed, manufactured and tested to ensure they meet government established RF exposure levels. In addition, manufacturers also recommend specific operating instructions to users of 2- way radios. These instructions are important because they inform users about RF energy exposure and provide simple procedures on how to control it. Please refer to the following websites for more information on what RF energy exposure is and how to control your exposure to assure compliance with established RF exposure limits. http://www.fcc.gov/oet/rfsafety/rf-faqs.html http://www.osha.gov/SLTC/radiofrequencyradiation/index.html Federal Communications Commission Regulations: The FCC rules require manufacturers to comply with the FCC RF energy exposure limits for mobile 2-way radios before they can be marketed in the U.S. When 2-way radios are used as a consequence of employment, the FCC requires users to be fully aware of and able to control their exposure to meet occupational requirements. Exposure awareness can be facilitated by the use of a label directing users to specific user awareness information. The DTX-165-RR-SIG two-way radio has an RF exposure product label. Also, this DTX-165-RR- SIG manual includes information and operating instructions required to control your RF exposure and to satisfy complianc…

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TYPE OF EXHIBIT: DESCRIPTION OF MEASUREMENT FACILITY FCC PART: 2.948 MANUFACTURER: RITRON, Inc. MODEL: DTX-165-RR-SIG TYPE OF UNIT: VHF Transceiver Module FCC ID: AIERIT42-165 DATE: November 4, 2014 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. Kevin G. Matson Senior Project Manager RITRON, Inc. TYPE OF EXHIBIT: MANUFACTURER’S STATEMENT FCC PART: 2.1033(c)(1-2) MANUFACTURER: RITRON, Inc. MODEL: DTX-165-RR-SIG TYPE OF UNIT: VHF Transceiver Module FCC ID: AIERIT42-165 DATE: November 4, 2014 The RITRON model DTX-165-RR-SIG is a VHF Transceiver Module designed for operation on 12.5 kHz channel bandwidths. Its output power is variable from 5 watt to 30 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. Kevin G. Matson Senior Project Manager RITRON, Inc. TYPE OF EXHIBIT: STATEMENT OF CERTIFYING ENGINEER FCC PART: 2.947 MANUFACTURER: RITRON, Inc. MODEL: DTX-165-RR-SIG TYPE OF UNIT: VHF Transceiver Module FCC ID: AIERIT42-165 DATE: November 4, 2014 I, Kevin G. Matson, have been employed by RITRON, Inc. since May 1980, working in the Engineering Department since November 1980 as a Radio Frequency Project Engineer/Manager. I received an Associates Degree in Electrical Engineering Technology from Purdue University at Indianapolis in 1980. I received a Bachelor of Science Degree in Electrical Engineering Technology from Purdue University at Indianapolis in 1982. I hereby certify that all measurements and date herein were taken by me, that they were obtained using sound and accepted engineering principles, and that they accurately reflect the performance and characteristics of the units tested. Kevin G. Matson Senior Project Manager RITRON, Inc. TYPE OF EXHIBIT: ANTI-DRUG ABUSE CERTIFICATION FCC PART: 1.2002(b) MANUFACTURER: RITRON, Inc. MODEL: DTX-165-RR-SIG TYPE OF UNIT: VHF Transceiver Module FCC ID: AIERIT42-165 DATE: November 4, 2014 I, Kevin G. Matson, 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. Kevin G. Matson Senior Project Manager RITRON, Inc.

Ritron, Incorporated 505 W. Carmel Drive · Carmel, IN 46032 P. O. Box 1998 · Carmel, IN 46082 Ph: 317-846-1201 Email: [email protected] Web Site: www.ritron.com November 26, 2014 Federal Communications Commission Authorization and Evaluation Division Confidentiality Request regarding application for certification of FCC ID: AIERIT42-165. Pursuant to Sections 0.457 and 0.459 of the Commission’s Rules, we hereby request confidential treatment of information accompanying this application as outlined below: Exhibit Type File Name Block Diagram Schematics Operational Description Semiconductor List Tune-up Procedure DTX165RRSIG_BlkDia.pdf DTX1650_RF_Sch.pdf, DTX165HPRRSIG_Sch.pdf DTX165RRSIG_OpDes.pdf DTX165RRSIG_PartsLst.pdf DTX165RRSIG_TunePro.pdf The above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these materials may be harmful to the applicant and provide unjustified benefits to its competitors. The applicant understands that pursuant to Section 0.457 of the Rules, disclosure of this application and all accompanying documentation will not be made before the date of the Grant for this application. Sincerely, Sam L. Dulaney Chief Engineer Ritron, Inc.

Ritron, Incorporated 505 W. Carmel Drive · Carmel, IN 46032 P. O. Box 1998 · Carmel, IN 46082 Ph: 317-846-1201 Email: [email protected] Web Site: www.ritron.com November 26, 2014 Office of Engineering and Technology Laboratory Division Equipment Authorization Branch FCC Laboratory7435 Oakland Mills Rd. Columbia, MD 21046 Re: Extended Frequency Justification on FCC ID: AIERIT42-165 To whom it may concern: The DTX-165-RR-SIG 30 watt OEM radio module was designed to operate in the frequency band 150-174 MHz. To aid equipment authorization in other countries which accept the United States FCC Grant for certification, Ritron is requesting that the FCC lists the frequencies 150-174 MHz under FCC Rule Parts 90 on the FCC Grant. For the FCC’s Rule Part 90 applications, this radio is used in systems by OEM systems integrators as indicated in the table below. Equipment programming is the responsibility of Authorized Service Personnel. Also, the radio complies with 47 CFR Part 90.203(e) in that the operator cannot directly program the transmit frequencies using the normally accessible external controls. Per the FCC’s KDB634817 guidance, “as an alternative to listing the exact frequencies, we acknowledge that it’s a violation of the FCC Rules if this device operates on unauthorized frequencies.” Frequency Range (MHz) Part 90 Federal Grant Notes Emission Designator Part 90 150-150.8 x EF 10K0F3E, 4K00F1E, 8K00F1E, 4K00F1D, 8K00F1D, 4K00F7W, 8K00F7W, 4K00F2D, 8K60F2D 150.8 -156.2475 x EF “ 156.2475 - 157.1875 x EF “ 157.1875 - 161.575 x EF “ 161.575 - 161.775 x EF “ 161.775 - 161.9625 x EF “ 161.9625 - 162.0375 x EF “ 162.0375 – 173.4 x EF “ 173.4 -174 x EF “ Sincerely, Sam L. Dulaney Chief Engineer Ritron, Inc. Email: [email protected]

TYPE OF EXHIBIT: PHOTOGRAPHS-EXTERNAL FCC PART: 2.1033(c)(12) MANUFACTURER: RITRON, Inc. MODEL: DTX-165-RR-SIG TYPE OF UNIT: VHF Transceiver Module FCC ID: AIERIT42-165 DATE: November 4, 2014 DTX-165-RR-SIG Side and Front View DTX-165-RR-SIG Side and Rear View TYPE OF EXHIBIT: PHOTOGRAPHS-EXTERNAL FCC PART: 2.1033(c)(12) MANUFACTURER: RITRON, Inc. MODEL: DTX-165-RR-SIG TYPE OF UNIT: VHF Transceiver Module FCC ID: AIERIT42-165 DATE: November 4, 2014 DTX-165-RR-SIG Front View DTX-165-RR-SIG Rear View

TYPE OF EXHIBIT: EQUPIMENT LABEL-LOCATION FCC PART: 2.1033(c)(11) MANUFACTURER: RITRON, Inc. MODEL: DTX-165-RR-SIG TYPE OF UNIT: VHF Transceiver Module FCC ID: AIERIT42-165 DATE: November 4, 2014 Photograph of unit showing location of equipment label: FCC Label Here

TYPE OF EXHIBIT: EQUPIMENT LABEL-SAMPLE FCC PART: 2.1033(c)(11) MANUFACTURER: RITRON, Inc. MODEL: DTX-165-RR-SIG TYPE OF UNIT: VHF Transceiver Module FCC ID: AIERIT42-165 DATE: November 6, 2014

TYPE OF EXHIBIT: PHOTOGRAPHS-INTERNAL FCC PART: 2.1033(c)(12) MANUFACTURER: RITRON, Inc. MODEL: DTX-165-RR-SIG TYPE OF UNIT: VHF Transceiver Module FCC ID: AIERIT42-165 DATE: November 5, 2014 DTX-165-RR-SIG RF Board Top View w/o Shields DTX-165-RR-SIG RF Board Top View w/ Shields TYPE OF EXHIBIT: PHOTOGRAPHS-INTERNAL FCC PART: 2.1033(c)(12) MANUFACTURER: RITRON, Inc. MODEL: DTX-165-RR-SIG TYPE OF UNIT: VHF Transceiver Module FCC ID: AIERIT42-165 DATE: November 5, 2014 DTX-165-RR-SIG RF Board Bottom View DTX-165-RR-SIG Control/Loader Board Bottom View TYPE OF EXHIBIT: PHOTOGRAPHS-INTERNAL FCC PART: 2.1033(c)(12) MANUFACTURER: RITRON, Inc. MODEL: DTX-165-RR-SIG TYPE OF UNIT: VHF Transceiver Module FCC ID: AIERIT42-165 DATE: November 5, 2014 DTX-165-RR-SIG Control/Loader Board Top View w/o Shield DTX-165-RR-SIG Control/Loader Board Top View w/ Shield TYPE OF EXHIBIT: PHOTOGRAPHS-INTERNAL FCC PART: 2.1033(c)(12) MANUFACTURER: RITRON, Inc. MODEL: DTX-165-RR-SIG TYPE OF UNIT: VHF Transceiver Module FCC ID: AIERIT42-165 DATE: November 5, 2014 DTX-165-RR-SIG PCB/Heatsink Assembly w/ Enclosure Shield

TYPE OF EXHIBIT: RF EXPOSURE EVALUATION FCC PART: 1.1310 MANUFACTURER: RITRON, Inc. MODEL: DTX-165-RR-SIG TYPE OF UNIT: VHF Transceiver Module FCC ID: AIERIT42-165 DATE: November 24, 2014 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 frequencies at the 30 watt maximum output power rating of the DTX-165-RR-SIG 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. 4. A quarter wave vertical antenna (0 dBi gain) 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 adjustable dipole, was substituted for the quarter wave antenna at the DTX-165-RR-SIG’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. TYPE OF EXHIBIT: RF EXPOSURE EVALUATION FCC PART: 1.1310 MANUFACTURER: RITRON, Inc. MODEL: DTX-165-RR-SIG TYPE OF UNIT: VHF Transceiver Module FCC ID: AIERIT42-165 DATE: November 24, 2014 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 TYPE OF EXHIBIT: RF EXPOSURE EVALUATION FCC PART: 1.1310 MANUFACTURER: RITRON, Inc. MODEL: DTX-165-RR-SIG TYPE OF UNIT: VHF Transceiver Module FCC ID: AIERIT42-165 DATE: November 24, 2014 RESULTS FOR EIRP: @ 5 Watts Frequency Pr Pgen Ps Ga ERP EIRP (MHz) (dBm) (dBm) (dBm) (dBd) (dBm) (watts) 150.815 16.0 0.0 -22.5 0.1 +38.4 11.3 161.565 17.0 0.0 -20.6 0.1 +37.5 9.2 173.390 15.0 0.0 -22.3 0.1 +37.2 8.6 @ 30 Watts Frequency Pr Pgen Ps Ga ERP EIRP (MHz) (dBm) (dBm) (dBm) (dBd) (dBm) (watts) 150.815 21.0 0.0 -22.5 0.1 +43.4 35.9 161.565 22.0 0.0 -20.6 0.1 +42.5 29.2 173.390 22.0 0.0 -22.3 0.1 +44.2 43.1 DETERMINING MPE DISTANCE: Power density is related to EIRP: S(W/m 2 ) = EIRP(W)/4r 2 where r is the distance from the source in cm. Rearranging for distance: _________ r = (EIRP/4S) The MPE (maximum permissible exposure) for a device operating in a occupational/controlled exposure environment is 0.2 mW/cm 2 . Converting to W/m 2 , the limit becomes 2 W/m 2 . The MPE limit is substituted for S and EIRP is entered in the above equation. TYPE OF EXHIBIT: RF EXPOSURE EVALUATION FCC PART: 1.1310 MANUFACTURER: RITRON, Inc. MODEL: DTX-165-RR-SIG TYPE OF UNIT: VHF Transceiver Module FCC ID: AIERIT42-165 DATE: November 24, 2014 RESULTS FOR MPE: @ 5 Watts Frequency EIRP Duty Cycle S limit Distance Distance (MHz) (watts) (%) (W/m 2) (cm) (in) 150.815 11.3 50 2 47.4 18.7 161.565 9.2 50 2 42.8 16.9 173.390 8.6 50 2 41.4 16.3 @ 30 Watts Frequency EIRP Duty Cycle S limit Distance Distance (MHz) (watts) (%) (W/m 2) (cm) (in) 150.815 35.9 50 2 84.5 33.3 161.565 29.2 50 2 76.2 30.0 173.390 43.1 50 2 92.6 36.5 RF WARNING STATEMENT: The following statement appears in the Users Manual regarding RF safety: SAFETY STANDARDS-RF EXPOSURE RF ENERGY EXPOSURE AWARENESS AND CONTROL INFORMATION, AND OPERATIONAL INSTRUCTIONS FOR FCC OCCUPATIONAL USE REQUIREMENTS: BEFORE USING THIS 2-WAY RADIO, READ THIS IMPORTANT RF ENERGY AWARENESS AND CONTROL INFORMATION AND OPERATIONAL INSTRUCTIONS TO ENSURE COMPLIANCE WITH THE FCC’S AND IC’S RF EXPOSURE GUIDELINES. NOTICE: This radio is intended for use in general population/uncontrolled conditions. This 2-way radio uses electromagnetic energy in the radio frequency (RF) spectrum to provide communications between two or more users over a distance. It uses radio frequency (RF) energy or radio waves to send and receive calls. RF energy is one form of electromagnetic energy. Other forms include, but are not limited to, electric power, sunlight and x-rays. RF energy, however, should not be confused with these other forms of electromagnetic energy, which when used improperly can cause biological damage. Very high levels of x-rays, for example, can damage tissues and genetic material. Experts in science, engineering, medicine, health, and industry work with organizations to develop standards for exposure to RF energy. These standards provide recommended levels of RF exposure for both workers and the general public. These recommended RF exposure levels include substantial margins of protection. All 2-way radios marketed in North America are designed, manufact…

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1 TYPE OF EXHIBIT: TABLE OF CONTENTS FCC PART: 2.1033(c)(14) MANUFACTURER: RITRON, Inc. MODEL: DTX-165-RR-SIG TYPE OF UNIT: VHF Transceiver Module FCC ID: AIERIT42-165 DATE: November 7, 2014 Description Page List of Test Equipment Used 2 Measurement Methods 3 Description of Measurement Facility 4 Radio Frequency Output Power 5 Modulator Response 7 Clipper Filter Response 10 Modulation Limiting Curves 12 Occupied Bandwidth 15 Bandwidth Calculations/Modulation Types 17 Conducted Spurious Emissions 19 Field Strength of Spurious Emissions 22 Frequency Stability vs Temperature 27 Frequency Stability vs Supply Voltage 29 Transient Frequency Behavior 31 2 TYPE OF EXHIBIT: LIST OF TEST EQUIPMENT USED FCC PART: 2.947(d) MANUFACTURER: RITRON, Inc. MODEL: DTX-165-RR-SIG TYPE OF UNIT: VHF Transceiver Module FCC ID: AIERIT42-165 DATE: November 7, 2014 ITEM MAKE/MODEL SERIAL NO. CAL. NEXT CAL. DC Power Supply HQ PS3010U N/A N/A Multimeter HP3466A N/A N/A RF Test Set HP 3920B 1000681480 01/01/2014 01/01/2015 Spectrum Analyzer Advantest R3265A 75060189 11/04/2013 11/04/2016 Spectrum Analyzer HP 8560E 3720A02980 11/04/2013 11/04/2016 Storage Scope Fluke PM3335 DM630034 N/A N/A Temp. Chamber Delta Design 3900 0-52-R N/A N/A Thermocouple Triplett 320-G/P N/A N/A Log Periodic Electro-Metrics LPA-25 8-102 04/30/2014 04/30/2017 Adjustable Dipoles Electro-Metrics EM-6924 291 04/08/2014 04/08/2015 Adjustable Dipoles Ritron 04/08/2014 04/08/2015 Gain Horn Emco #3105 3105 10/21/2013 10/21/2015 3 TYPE OF EXHIBIT: MEASUREMENT METHODS FCC PART: 2.947 MANUFACTURER: RITRON, Inc. MODEL: DTX-165-RR-SIG TYPE OF UNIT: VHF Transceiver Module FCC ID: AIERIT42-165 DATE: November 7, 2014 All of the measurements made on this device and included in this report were made per ANSI/TIA-603-C-2004. Kevin G. Matson Senior Project Manager RITRON, Inc. 4 TYPE OF EXHIBIT: DESCRIPTION OF MEASUREMENT FACILITY FCC PART: 2.948 MANUFACTURER: RITRON, Inc. MODEL: DTX-165-RR-SIG TYPE OF UNIT: VHF Transceiver Module FCC ID: AIERIT42-165 DATE: November 7, 2014 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. Kevin G. Matson Senior Project Manager RITRON, Inc. 5 TYPE OF EXHIBIT: RADIO FREQUENCY OUTPUT POWER FCC PART: 2.1046(a) MANUFACTURER: RITRON, Inc. MODEL: DTX-165-RR-SIG TYPE OF UNIT: VHF Transceiver Module FCC ID: AIERIT42-165 DATE: November 7, 2014 PROCEDURE: 1. The DTX-165-RR-SIG was aligned for transmitter operation at three power levels 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 DTX-165-RR-SIG by an Astron VS-20M Power Supply. The DTX-165-RR-SIG was connected to a HP3920B Test Set used to measure the RF carrier power. The input to the Test Set provides a resistive 50-ohm termination at the frequencies and power levels used for this test. 3. The voltage across an internal shunt in series with the power supply lead of the RF Power Module was used with an Fluke 45 Digital Multimeter to measure current (Id). A B&K 2704A was used to measure the RF Power Module output stage power control voltage (Vcon) and drain voltage (Vd). 4. Measurements were taken at power levels 5 watts, 15 watts, and 30 watts. 6 TYPE OF EXHIBIT: RADIO FREQUENCY OUTPUT POWER FCC PART: 2.1046(a) MANUFACTURER: RITRON, Inc. MODEL: DTX-165-RR-SIG TYPE OF UNIT: VHF Transceiver Module FCC ID: AIERIT42-165 DATE: November 7, 2014 RESULTS: 150.815 MHz Pout(W) Vcntl(V) Vd(V) Id(A) Eff (%) 5 3.1 12.4 2.5 18.7 15 3.7 12.3 4.0 30.5 30 4.1 12.2 5.4 45.5 161.565 MHz Pout(W) Vcntl(V) Vd(V) Id(A) Eff (%) 5 3.2 12.4 2.3 17.5 15 3.8 12.3 3.9 31.3 30 4.3 12.2 5.5 44.7 173.390 MHz Pout(W) Vcntl(V) Vd(V) Id(A) Eff (%) 5 3.3 12.4 2.5 16.1 15 3.9 12.3 4.1 29.7 30 4.3 12.2 5.8 42.4 7 TYPE OF EXHIBIT: MODULATOR RESPONSE-12.5 kHz CHANNELS FCC PART: 2.1047(a) MANUFACTURER: RITRON, Inc. MODEL: DTX-165-RR-SIG TYPE OF UNIT: VHF Transceiver Module FCC ID: AIERIT42-165 DATE: November 14, 2014 PROCEDURE: 1. The DTX-165-RR-SIG modulator response was measured from the audio input to the modulator input. 2. The unit was swept in frequency from 100 Hz to 10 kHz and the results noted. Plots are shown for 12.5 kHz channel spacing operation for both flat and pre- emphasized modes. The frequency response is independent of carrier frequency. 8 TYPE OF EXHIBIT: MODULATOR RESPONSE-12.5 kHz CHANNELS FCC PART: 2.1047(a) MANUFACTURER: RITRON, Inc. MODEL: DTX-165-RR-SIG TYPE OF UNIT: VHF Transceiver Module FCC ID: AIERIT42-165 DATE: November 14, 2014 RESULTS: Flat audio input 9 TYPE OF EXHIBIT: MODULATOR RESPONSE-12.5 kHz CHANNELS FCC PART: 2.1047(a) MANUFACTURER: RITRON, Inc. MODEL: DTX-165-RR-SIG TYPE OF UNIT: VHF Transceiver Module FCC ID: AIERIT42-165 DATE: November 14, 2014 RESULTS: Pre-emphasized audio 10 TYPE OF EXHIBIT: CLIPPER FILTER RESPONSE FCC PART: 2.1047(a) MANUFACTURER: RITRON, Inc. MODEL: DTX-165-RR-SIG TYPE OF UNIT: VHF Transceiver Module FCC ID: AIERIT42-165 DATE: November 14, 2014 PROCEDURE: 1. The audio output of the audio test set was coupled into the audio input of the DTX-165-RR-SIG. The flat input mode was selected. The audio input of the test set was connected to the input of the modulator. 2. The audio generator frequency was swept from 100 Hz to 10 kHz and the response for 12.5 kHz channel spacing operation noted and plotted. The frequency response is independent of carrier frequency. 11 TYPE OF EXHIBIT: CLIPPER FILTER RESPONSE-12.5 kHz CHANNELS FCC PART: 2.1047(a) MANUFACTURER: RITRON, Inc. …

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TYPE OF EXHIBIT: TEST SETUP PHOTO FCC PART: MANUFACTURER: RITRON, Inc. MODEL: DTX-165-RR-SIG TYPE OF UNIT: VHF Transceiver Module FCC ID: AIERIT42-165 DATE: November 6, 2014 TYPE OF EXHIBIT: TEST SETUP PHOTO FCC PART: MANUFACTURER: RITRON, Inc. MODEL: DTX-165-RR-SIG TYPE OF UNIT: VHF Transceiver Module FCC ID: AIERIT42-165 DATE: November 6, 2014