AIERIT17-145RVHF RECEIVER

0 RITRON ® DR-145/445 PROGRAMMABLE FM RECEIVER MODULE MAINTENANCE & OPERATING MANUAL FOR USE ONLY BY AUTHORIZED SERVICE/MAINTENANCE PERSONNEL 1 TABLE OF CONTENTS SECTION TOPIC PAGE 1. INTRODUCTION GENERAL 2 Model Identification 2 FCC REGULATIONS Licensing 4 Exposure to Radio Frequency Energy 4 FCC Label 6 MAINTENANCE INFORMATION 7 Surface Mount Repairs 7 Precautions for handling CMOS 7 Synthesizer shield 7 2. DR-145/445 SPECIFICATIONS GENERAL 8 RECEIVER 9 3. SETUP 10 OPERATION 10 INSTALATION 10 4. SUB-D 15 PIN CONNECTOR 10 5. PROGRAMMING THE RADIO PROGRAMMING THE RADIO USING A PC COMPUTER 12 Using the Programming Software 12 Computer Software Copyrights 12 6. DR-145/445 THEORY OF OPERATION OVERVIEW 13 POWER SUPPLY AND VOLTAGE DISTRIBUTION 13 REFERENCE OSCILLATOR 13 SYNTHESIZER 13 RECEIVER 14 Receiver Front End 14 FM Receiver Subsystem 14 Voice and Tone Conditioning 14 MICROCONTROLLER 17 7. DR-145/445 ALIGNMENT PROCEDURE RECOMMENDED TEST EQUIPMENT 18 RADIO PREPARATION 18 RADIO ADJUSTMENTS 18 2 INTRODUCTION General RITRON's DR-145 and DR-445 receiver module operate in one of a number of VHF or UHF frequency bands. Typical radio parameters such as frequencey, squelch level and audio input and output gain are PC adjustable. The receiver is a single board unit with components on one side and pin for pin compatible with the DR-142/442. The unit supports voice through a microphone input and a nominal one watt speaker output or data through the auxiliary in and auxiliary out ports. Each radio can be programmed to contain a unique set of eight operating frequencies and sub-audible tones. When all three channel select inputs are tied to ground the radio operates on channel 1. The channel selection is done in a binary manner on the CS2, CS1 and CS0 inputs. Separate RX and TX Quiet Call (CTCSS) or Digital Quiet call (DCS) tones can be programmed per channel. The standby current drain at 12.5 VDC is typically about 22 mA. Model Identification The DR-145 or DR-445 is available in an aluminum encased version with a BNC connector or a board-only version. The board only version can have one of a variety of RF connectors. The model number form is: “ DR-145ABCDE ” or “ DR-445ABCDE ” Where: A is frequency sub-band: For the DR-145: G = 136 to 162 MHz O = 136 to 174 MHz (reduced image rejection of 60 dB from 136 to 148 MHz) For the DR-445: G = 400.5 to 416.5 MHz H = 411 to 429 MHz 0 = 450 to 470 MHz B is the connector type: B = BNC C = BNC on flying coaxial cable M = SMB X = MCX S = SMA C designates the receiver IF bandwidth: N = Narrow W = Wide D designates the maximum RF power output: 5 = 5 watt 8 = 8 watt (only available in UHF) E designates the case: D = deletion of case E = enclosure S = shield Examples: DR-445GBW5E 411 to 429 MHz wideband receiver in case with BNC connector DR-445OSN8S 450 to 470 MHz narrowband receiver with SMA connector and shield Units without cases can be delivered with a vertical or right angle female DB-15 connector. Contact the RITRON sales department for further details. 3 Enclosed version 4 MAINTENANCE INFORMATION Surface Mount Repair RITRON surface mount products require special equipment and servicing techniques. Improper servicing techniques can cause permanent damage to the printed circuit board and/or components, which is not covered by RITRON’s warranty. If you are not completely familiar with surface mounted component repair techniques, RITRON recommends that you defer repair to qualified service personnel. Precautions for Handling CMOS Devices This radio contains complementary metal-oxide semiconductor (CMOS) devices, which require special handling techniques. CMOS circuits are susceptible to damage by electrostatic or high voltage charges. Damage can be latent, with no failure appearing until weeks or months later. For this reason, take special precautions any time you disassemble the radio. Follow the precautions below, which are even more critical in low humidity environments. 1) Storage/transport - CMOS devices that will be stored or transported must be placed in conductive material so that all exposed leads are shorted together. CMOS devices must not be inserted into conventional plastic “snow” or plastic trays of the type that are used for other semiconductors. 2) Grounding - All CMOS devices must be placed on a grounded bench surface. The technician that will work on the radio/CMOS circuit must be grounded before handling the radio. Normally, the technician wears a conductive wrist strap in series with a 100K Ohm resistor to ground. 3) Clothing - Do not wear nylon clothing while handling CMOS circuits. 4) Power off - Remove power before connecting, removing or soldering a PC board that contains CMOS devices. 5) Power/voltage transients - Do not insert or remove CMOS devices with power applied. Check all power supplies to be used for testing CMOS devices, making sure that no voltage transients are present. 6) Soldering - Use a grounded soldering iron for soldering CMOS circuitry. 7) Lead-straightening tools - When straightening CMOS leads, provide ground straps for the tool used. Synthesizer and RF Power Amplifier Shield The synthesizer shield should not be removed unless a component must be replaced. This shield is soldered to the main PC board. Sucking or wicking the solder up around the perimeter can remove the shield. If this should prove difficult a side cutter can cut the top off after which the walls can be removed. A replacement shield will then be needed and is available from RITRON. 0 DR-145 SPECIFICATIONS GENERAL Frequency Range: O-band: 136 to 174 MHz RF Channels: 8 Independent RX frequencies Unusable 2.5 kHz RX steps in 136 to 174 MHz band: +/- 10 kHz around the 14.4 MHz harmonics at 144 MHz, 158.4 MHz and 172.8 MHz. Additional RX unusable 2.5 kHz steps RX in 136 - 174 MHz band 143.542 5 143.557 5 157.942 5 157.957 5 172.342 5 172.357 5 Frequency Stability: +/-2.5 PPM (-30° to +60° C) Tone/Code Signaling: CTCSS (Quiet Call) and DCS Power Supply: 9 to …

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Ritron Inc. 505 West Carmel Dr. Carmel, IN 46032 Federal Communications Commission Authorization and Evaluation Division Confidentiality Request regarding application for certification of FCC ID: AIERIT17-145R 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 DTX-445 BlkDia.pdf DTX-445 Schem.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.

TYPE OF EXHIBIT: INTERNAL PHOTOGRAPHS FCC PART: 2.1033 c(12) MANUFACTURER: RITRON, INC. 505 West Carmel Drive Carmel, IN 46032 MODEL: DR-145 TYPE OF UNIT: VHF-FM Receiver Module FCC ID: AIERIT17-145R DATE: 7 Jan, 2011 DR-145 top side with shields DR-145 top side with no shields DR-145 bottom side

TYPE OF EXHIBIT: FCC LABEL FCC PART: 2.926 per 15.17 (a) (1) MANUFACTURER: RITRON, INC. 505 West Carmel Drive Carmel, IN 46032 MODEL: DR-145 TYPE OF UNIT: VHF-FM Receiver Module FCC ID: AIERIT17-145R DATE: 27 Apr 2011 The FCC label will be placed on the bottom of the PCB. DR-145 FCC ID location

TYPE OF EXHIBIT: INTERNAL PHOTOGRAPHS FCC PART: 2.1033 c(12) MANUFACTURER: RITRON, INC. 505 West Carmel Drive Carmel, IN 46032 MODEL: DR-145 TYPE OF UNIT: VHF-FM Receiver Module FCC ID: AIERIT17-145R DATE: 7 Jan, 2011 DR-145 top side with shields DR-145 top side with no shields DR-145 bottom side

TYPE OF EXHIBIT: OPERATIONAL DESCRIPTION FCC PART: 2.1031 (5) MANUFACTURER: RITRON, INC. 505 West Carmel Drive Carmel, IN 46032 MODEL: DR-145 TYPE OF UNIT: VHF-FM Receiver Module FCC ID: AIERIT17-145R DATE: 7 Jan, 2011 The DR-145 is intended for use as an FM receiver to be installed in a receiving system operating in the 136 to 174 MHz band. It is powered by an 8 to 17 volt supply and will receiver nominal wideband (+/- 5 kHz max deviation) or narrowband (+/- 2.5 kHz max deviation) FM signals.

1 *************************************************************************************************************** DR-145 Test Results *************************************************************************************************************** MANUFACTURER: RITRON, INC. 505 West Carmel Drive Carmel, IN 46032 MODEL: DR-145 TYPE OF UNIT: VHF-FM Receiver Module FCC ID: AIERIT17-145R DATE: Jan 7, 2011 The following is a list of attached exhibits required by the Federal Communications Commission for the application to and grant of FCC Type Acceptance. They were taken by myself, by Dennis Zimmerman, at the Ritron indoor lab facilities and outdoor antenna test range in Carmel, IN. FCC Rule Page List of Test Equipment Used 2.947 (d) pg 2 Required Measurements 2.1033 (c)(14) Radiated Spurious Emissions 2.1053 pg 3 Spurious Emissions at antenna terminal 2.1051 pg 5 AC Conducted limits 2.1033 pg 6 Dennis Zimmerman Project Engineer RITRON, Inc. 2 TYPE OF EXHIBIT: TEST EQUIPMENT LIST FCC PART: 2.947 (d) MANUFACTURER: RITRON, INC. 505 West Carmel Drive Carmel, IN 46032 MODEL: DR-145 TYPE OF UNIT: VHF-FM Receiver Module FCC ID: AIERIT17-145R DATE: Jan 7, 2011 The measured data in this report was obtained using one or more of the following pieces of equipment. The particular equipment used in any one test is detailed in the procedure for that test. ITEM MANUFACTURER MODEL NO. SERIAL NO. Last Cal EXP Cal Comms Test Set Hewlett-Packard HP8920A 3352A03633 9-2-10 8-6-11 Signal generator Hewlett-Packard HP8657B 3315V04378 9-2-10 8-6-11 Spectrum Analyzer Hewlett-Packard 8560E 3720A02980 9-2-10 8-6-11 Support equipment: ITEM MANUFACTURER MODEL NO. SERIAL NO. Log Periodic Antenna Electro-Metrics LPA-25 8-102 Power Supply BK/Precision 1730 263-023610 3 TYPE OF TEST: RADIATED SPURIOUS EMISSIONS FCC PART: 2.1053 per 15.109 & 15.33 (b) (3) MANUFACTURER: RITRON, INC. 505 West Carmel Drive Carmel, IN 46032 MODEL: DR-145 TYPE OF UNIT: VHF-FM Receiver Module FCC ID: AIERIT17-145R DATE: Aug 31, 2010 PROCEDURE: Field strength of spurious radiation of the DR-145 was taken on the RITRON three meter test range up to 436 MHz, the second harmonic of the highest local oscillator, using the substitution method. The following procedure was used. 1. The DR-145 was programmed to receive at the middle of each of the three bands which is 136.1, 161.1 and 174.1 MHz. The units were powered by a BK Precision power supply at 15 VDC. 2. The DR-145 was then terminated at the antenna port with a RAM-1545 antenna. 3. All field strength measurements were made with the Hewlett-Packard Model 8560E Spectrum Analyzer connected to the Electro-Metrics LPA-25 log periodic receive antenna with 25 feet of RG-55 cable. 5. For each emission, the height and polarization of the field strength measuring antenna and orientation of the DTX-145 were varied to find maximum field strength. 6. The worse case emissions levels at each of the frequencies were noted. 7. Calculations were then performed to confirm compliance with the FCC limits. SAMPLE CALCULATION: ERP(dBm)= Rspur – Rref + Pref where: Rspur and Rref are received power levels of the spur and reference signals respectively. Pref is the reference generator power. Pspur = 10^(ERP-30)/10 converts spur ERP(dBm) to power in watts ___________ E(V/m) = √(49.2 x Pspur) /r field strength a distance r in meters E(uV/m) = E(V/m) x 10 6 A spurious reading of -104 dBm at 179.75 MHz was made. Setting the generator to 0 dBm at the same frequency a substitution level of -17 dBm was read. The power of the spur is thus: Pspur = -104 – (-17) = -87 dBm ___________________ E(V/m) = √(49.2 x 10^((-87-30)/10)) /3 = 3.3 x 10 -6 4 TYPE OF TEST: RADIATED SPURIOUS EMISSIONS FCC PART: 2.1053 per 15.109 MANUFACTURER: RITRON, INC. 505 West Carmel Drive Carmel, IN 46032 MODEL: DR-145 TYPE OF UNIT: VHF-FM Receiver Module FCC ID: AIERIT17-145R DATE: Aug 31, 2010 RESULT SUMMARY: Substitution Sub Vert Max read Max Spur FCC limit power(dBm) reading(dBm)(dBm) ERP(dBm) E(uV/m) E(uV/m) 179.75 Horz 0 -17.0 -104 -87.0 3.3 150 Vert 0 -26.0 -104 -78.0 9.3 150 204.75 Horz 0 -19.0 -105 -86.0 3.7 150 Vert 0 -27.0 -105 -78.0 9.3 150 217.75 Horz 0 -22.0 -105 -83.0 5.2 150 Vert 0 -27.0 -105 -78.0 9.3 150 The worse case spurious was 9.3 uV/m which is well below the 150 uV/m FCC limit. 5 TYPE OF TEST: CONDUCTED EMISSIONS AT ANTENNA FCC PART: 2.1051 per 15.111 MANUFACTURER: RITRON, INC. 505 West Carmel Drive Carmel, IN 46032 MODEL: DR-145 TYPE OF UNIT: VHF-FM Receiver Module FCC ID: AIERIT17-145R DATE: Jan 7, 2011 PROCEDURE: The DR-145 was programmed for receiving at 136.1, 155.1 and 174.1 MHz. Power was supplied to the DR-145 by a BK Precision Model 1730 Power Supply set to 15 VDC. A 3 foot coaxial cable connected the antenna receive port directly the HP8560E spectrum analyzer input. The highest emissions occurred at the local oscillator frequencies. The following table summarizes the measurements. All are well below the FCC required 2 nW conducted emissions. RESULTS SUMMARY: RX LO Level FCC limit Margin Freq(MHz) Freq(MHz) (dBm) (dBm) (dB) 136.1 179.75 -72 -57 15 155.1 198.75 -92 -57 35 174.1 217.75 -93 -57 36 6 TYPE OF TEST: AC POWERLINE CONDUCTED EMISSIONS FCC PART: 2.1033 per 15.107 MANUFACTURER: RITRON, INC. 505 West Carmel Drive Carmel, IN 46032 MODEL: DR-145 TYPE OF UNIT: VHF-FM Receiver Module FCC ID: AIERIT17-145R DATE: Jan 9, 2011 The DR-145 was powered by a RITRON RPS-1A power supply plugged into a line impedance stabilization network. The outputs were monitored by an HP8560E from 150 kHz to 30 MHz. The following table shows the FCC limits and conversion calculations to dBm for spectrum analyzer measurement: Frequency of FCC Conducted limit, Quasi-peak Emission (MHz) (dBuV) (volts) (dBm) 0.15 66* .002 -41 0.5 56 .00063 -51 0.5-5 56 .00063 -51 5-30 60 .001 -47 *Decrease with the log of frequency In the above table volts are derived from dBuV as v = .000001 * 10 (dBuV/20) Power is derived as: P(watts) = V 2 /R P(dBm) = 10 * log(P/.001) Wher…

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1 *************************************************************************************************************** DR-445 Test Setup Photograghs *************************************************************************************************************** MANUFACTURER: RITRON, INC. 505 West Carmel Drive Carmel, IN 46032 MODEL: DR-445 TYPE OF UNIT: UHF-FM Receiver Module FCC ID: AIERIT17-445R DATE: 21 Oct 2010 TABLE OF CONTENTS: RITRON’s 3-meter antenna range pg 2 Line impedance stabilization unit on floor of AC powerline conducted test site pg 3 2 RITRON’s 3 meter antenna range 3 Line impedance stabilization network on floor of AC powerline conducted test site