SQT-RIPEX-135VHF NARROWBAND RADIOMODEM

User manual . RipEX Radio modem & Router . version 1.4 10/26/2012 fw 1.2.x.x www.racom.eu RACOMs.r.o.•Mirova1283•59231NoveMestonaMorave•CzechRepublic Tel.:+420565659511•Fax:+420565659512•E-mail: [email protected] Table of Contents Getting started .....................................................................................................................................7 1. RipEX – Radio router ...................................................................................................................... 9 1.1. Introduction ...........................................................................................................................9 1.2. Key Features ........................................................................................................................ 9 1.3. Standards ........................................................................................................................... 10 2. RipEX in detail ...............................................................................................................................12 2.1. Modes of operation ............................................................................................................. 12 2.2. Bridge mode ....................................................................................................................... 12 2.3. Router mode .......................................................................................................................17 2.4. Serial SCADA protocols ..................................................................................................... 22 2.5. Combination of IP and serial communication ..................................................................... 23 2.6. Diagnostics & network management .................................................................................. 23 2.7. Firmware update and upgrade ........................................................................................... 25 2.8. Software feature keys ......................................................................................................... 26 3. Network planning ...........................................................................................................................27 3.1. Data throughput, response time ......................................................................................... 27 3.2. Frequency .......................................................................................................................... 28 3.3. Signal budget ..................................................................................................................... 29 3.4. Multipath propagation, DQ ................................................................................................. 31 3.5. Network layout ....................................................................................................................33 3.6. Hybrid networks ..................................................................................................................35 3.7. Assorted practical comments ............................................................................................. 35 3.8. Recommended values ........................................................................................................ 36 4. Product .......................................................................................................................................... 38 4.1. Dimensions .........................................................................................................................38 4.2. Connectors ......................................................................................................................... 39 4.3. Indication LEDs .................................................................................................................. 44 4.4. Technical specification ........................................................................................................ 45 4.5. Model offerings ................................................................................................................... 53 4.6. Accessories ........................................................................................................................ 55 5. Bench test ..................................................................................................................................... 60 5.1. Connecting the hardware ................................................................................................... 60 5.2. Powering up your RipEX .................................................................................................... 60 5.3. Connecting RipEX to a programming PC ........................................................................... 60 5.4. Basic setup ......................................................................................................................... 64 5.5. Functional test .................................................................................................................... 64 6. Installation ..................................................................................................................................... 65 6.1. Mounting .............................................................................................................................65 6.2. Antenna mounting .............................................................................................................. 68 6.3. Antenna feed line ............................................................................................................... 68 6.4. Grounding ...........................................................................................................................69 6.5. Connectors ................................................................................…

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Product: Ripex mkr20RACOM s.r.o. Nove Mesto na Morave Rev: 7.1Date: 03.12.2012 Unit: Block diagramLast modification: Danek Sheet: 1 of 1 Des: Danek Date: 23.11.2012 Siz A3 Communication Processor FPGA D/A I/Q MODULATOR
P LP SW I Q Power AMP RF AMP LP A/D I/Q DEMODULATOR LO3
P LO1
P LO2
P RX/TX SWITCH LP IF AMP LNA 73.125 MHz 135.000 – 154.000 MHz 135.000 – 154.000 MHz 205.000 – 224.000 MHz 70.000 MHz

Racom s.r.o. Mirova 1283 Nove Mesto na Morave 59231 Czech Republic Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 Gentlemen: This letter is to comply with Sections 0.457 and 0.459 pertaining to confidential material. Racom s.r.o. would like the following documents regarding this submission for FCC ID: SQT-RIPEX-135 to be kept confidential. 1. Document (Schematics) mkr20_02_135-154MHz_sch.pdf. 2. Document (Schematics) mam43-sch.pdf. 3. Document (Part List) bom-mkr20_02_135-154MHz.pdf. 4. Document (Part List) bom-mam43.pdf. The above material contains trade secrets or technical data, which would customarily be guarded from competitors. We do not want these documents to be accessible to the general public. Sincerely, Jiri Hruska, CEO Racom s.r.o.

Photographs Of Equipment List of photographs: PHOTOGRAPH 1: Unit No. 1 external view ...................................................................................................... 2 PHOTOGRAPH 2: Unit No. 1 top external view ................................................................................................ 3 PHOTOGRAPH 3: Unit No. 1 front external view.............................................................................................. 4 PHOTOGRAPH 4: Unit No. 1 left external view ................................................................................................ 5 PHOTOGRAPH 5: Unit No. 1 view of the type label ......................................................................................... 6 PHOTOGRAPH 6: Unit No. 1 detailed view of the type label............................................................................ 7 PHOTOGRAPH 1: Unit No. 1 external view PHOTOGRAPH 2: Unit No. 1 top external view PHOTOGRAPH 3: Unit No. 1 front external view PHOTOGRAPH 4: Unit No. 1 left external view PHOTOGRAPH 5: Unit No. 1 view of the type label PHOTOGRAPH 6: Unit No. 1 detailed view of the type label

PHOTOGRAPH 5: Unit No. 1 view of the type label

Photographs Of Equipment List of photographs: PHOTOGRAPH 1: Unit No. 4 top internal view ................................................................................................. 2 PHOTOGRAPH 2: Unit No. 4 bottom internal view ........................................................................................... 3 PHOTOGRAPH 3: Unit No. 4 top view of the lower circuit board ..................................................................... 4 PHOTOGRAPH 4: Unit No. 4 bottom view of the lower circuit board ............................................................... 5 PHOTOGRAPH 5: Unit No. 4 top view of the upper circuit board..................................................................... 6 PHOTOGRAPH 6: Unit No. 4 bottom view of the upper circuit board............................................................... 7 PHOTOGRAPH 1: Unit No. 4 top internal view PHOTOGRAPH 2: Unit No. 4 bottom internal view PHOTOGRAPH 3: Unit No. 4 top view of the lower circuit board PHOTOGRAPH 4: Unit No. 4 bottom view of the lower circuit board PHOTOGRAPH 5: Unit No. 4 top view of the upper circuit board PHOTOGRAPH 6: Unit No. 4 bottom view of the upper circuit board

RipEX-160 Operational Description RipEX-160 is a two-way radio for transmitting and receiving digital data modulated on a radio frequency carrier with a frequency range of 135 to 174 MHz. The unit consists of an antenna, receiver and transmitter circuitry, a microcontroller to control the basic radio functionality and a modem board for baseband processing of the digital data. Antenna The antenna is tuned to the 135 – 174 MHz frequency band. Immediately next to the antenna is a directional coupler to sample the outgoing transmit signal for use in the linearisation of the transmitter amplifier chain (see below). A low-pass filter common to both transmitter and receiver is followed by a high linearity Tx-Rx switch to separate the signal paths between the transmitter and receiver. Receiver The receiver is a dual conversion superheterodyne type with a first intermediate frequency at 70 MHz. It consists of a second low-pass filter to further eliminate the out-of-band signals and prevent desensitisation in subsequent stages. The incoming signal is then boosted by a low-noise amplifier (LNA) and downconverted to the first IF frequency by means of a mixer and local oscillator (LO1). LO1 is a phase-locked loop controlled oscillator and its output frequency (within the range of 205 – 244 MHz) is determined by the on-board microcontroller ( μP). The choice of this frequency also determines the channel the receiver is operating at. After channel filtering and amplification, the IF signal is down-converted once again by means of a second mixer and local oscillator (LO3) tuned to 73.125 MHz. Analogue-to-digital conversion and I/Q demodulation is performed at baseband after a further mixing stage and the signal is then fed into the FPGA on the modem board for baseband processing and decoding. Transmitter The transmitter has a direct-conversion architecture whereby the digital baseband signal obtained from the FPGA undergoes digital-to-analogue conversion and I/Q modulation, and then up-converted to the final transmitter frequency (135 – 174 MHz, as in receiver) in single mixing stage by the help of the transmitter local oscillator (LO2) with the same frequency range. The frequency of LO2 is also controlled by the microcontroller and this selection determines the transmit channel being used. The modulated signal at the final frequency is amplified in two stages by the pre-amplifier (RF AMP) and the power amplifier (Power AMP) to achieve the desired output power level at the antenna. After low- pass filtering, the signal is fed to the Tx port of the Tx-Rx switch. In order to maintain the linearity of the transmitter signal chain and cause minimal distortion on the complex modulation, the outgoing transmitter signal is sampled just prior to the antenna by means of a directional coupler and is fed back to the I/Q modulator. Transmitter linearisation is performed using the Cartesian Feedback architecture. Antenna connections and grounding Please refer to Section 6 (Installation) of the User Manual also provided with the certification application documents.

Page 1 of 4 Maximum Permissible Exposure (MPE) Evaluation according to the OET Bulletin 65 (Edition 97-01) Evaluated equipment: The RipEX radio modem for data transmission in the 135 – 154 MHz frequency range Author:Ing. Jiří Hruška Date:29.11.2012 Pages:4 Evaluated equipment The RipEX radio modem is designed for bi-directional data transfer in a radio frequency channel assigned from the specified frequency range. When transmitting, it generates an angle modulated, continuous, constant-envelope radio-frequency signal on the output (antenna) connector. The transmitted signal spectral width is limited to a single channel and never exceeds the respective channel spacing, which is 25 kHz or 12,5 kHz or 6,25 kHz. The maximum nominal output radio- frequency (RF) power of the RipEX radio modem is 10 Watts. The output RF power variation in extreme conditions is guaranteed by the manufacturer to stay within -3,0 dB to +2.0 dB limits. The RipEX radio modem main specifications for a frequency range around 160 MHz are in Table 1. Table 1 – RipEX radio modem main technical parameters ParameterValue Frequency rangefrom 135 MHz to 154 MHz Channel spacing6,25 / 12,5 / 25 kHz Number of channels in the operating range 3040 / 1520 / 760 Channel setting methodsoftware Supply voltage (nominal)13,8 V Supply voltage range 10 V to 30 V Operating temperature range-40 °C to +70 °C Current consumption: Reception: Transmission 1W: Transmission 10W: 360 mA 1,1 A 3,0 A Configurable RF output power rangefrom 0,1 W to 10 W Antenna connectorTNC RF output impedance50 The RipEX radio modem is connected to the antenna by a coaxial cable. Since the antenna may be connected by a very short cable, the cable loss shall be considered negligible in the calculation. Page 2 of 4 MPE Calculations According to the OET Bulletin 65 (Edition 97-01) R= √ P.G 4.π.S Where: S=Power density (in appropriate units, e.g. mW/cm2) P=Power input to antenna (in appropriate units, e.g., mW) G=Power gain of the antenna in the direction of interest relative to an isotropic radiator R=Distance to the centre of radiation of the antenna (appropriate units, e.g., cm) Tx Frequency = 135 MHz The exposure at the lowest frequency of the operating range makes the worst case, since the limits given in §1.1310 of the FCC Rules increase with frequency (in the frequency range applicable to the evaluated equipment) whereas the radiation from RipEX radio modem will be constant. Maximum peak power = 42.0 (dBm) The maximum peak power is calculated as the nominal maximum power increased by the margin allowed by the applicable FCC standard (+2dB) Antenna gain = 2.15 (dBi) The antenna gain of the half-wave dipole is considered as the worst-case scenario. The areas of exposure never lie in the direction of the main lobe of the transmitting antenna. In fact, the higher the gain of the antenna is, the lower the radiation in the directions relevant for exposure evaluation will be. S = 0.2 [mW/cm2] The FCC limit for exposure of general population / uncontrolled exposure in the 135-154 MHz frequency range. P = 15850 [mW] The numerical value of maximum TX power G = 1.64 The numerical value of half-wave dipole gain Page 3 of 4 The worst case scenario also assumes 100% duty cycle. Though the equipment assessed allows for that, it never happens in reality thanks to the packet-oriented transmission environment. Calculated minimum separation distance from antenna, where the limit for general public / uncontrolled exposure is met, is: Ru = 102 cm The distance, where the limit for occupation / controlled exposure is met, is: Rc = 46 cm The distance, where the limits are met for typical directional and omni directional antennas typically used with RipEX radio modem. The safe distance for directional antennas is validated in the direction of the main beam centre, where it is nevertheless unreasonable to expect the presence of general public. Table #1 – The distance where the FCC limits are met for typical antennas 135 - 154 MHz/ 2 m band /10 Watt RF power Antenna code Antenna description Gain G (dBi) Gain G (-) Distance where the FCC limits is met for General Population/Uncontrolled Exposure (cm) Occupational/Controlled Exposure (cm) OV140.1single dipole4,62,9 134,9 60,3 OV140.2 stacked double dipole 7,65,8190,585,2 SA140.3 3 element directional Yagi 7,65,8190,585,2 Conclusion: It is safe to assume that members of general public will never be present in the distance Ru (or lower) to a fixed installation of antenna of the evaluated equipment. Equally it is safe to assume that e.g. a member of staff performing mast maintenance will spend only negligible fractions of time in the Rc (or lower) distance to the transmitting antenna (the Rc distance actually corresponds with the physical size of the antenna itself). Consequently, in our opinion, the operation of the evaluated equipment would not make a significant environmental effect. Page 4 of 4

RACOM s.r.o. • Mírová 1283 • 592 31 Nové Město na Moravě • Czech Republic Tel.: +420 565 659 511 • Fax: +420 565 659 512 • E-mail: [email protected] www.racom.eu Racom_121113_TR_FCC version: A Test of RipEX-160 Radio modem The tests have been carried out with reference to 47CFR Parts 2 and 90 Measured by: Radek Holý Approved by: Karel Dan ěk ...the broadest narrowband money can buy TEST REPORT Specification: 47CFR Parts 2 and 90 2 / 125 www.racom.eu CONTENTS (PAGE) 1. TECHNICAL SUMMARY AND TEST RESULTS....................................................................................4 1.1 Technical Summary .................................................................................................................................4 1.2 Test Results 135.0125 MHz.....................................................................................................................5 1.2.1. RF POWER OUTPUT AT TERMINALS (10.0 W) .............................................................................................. 6 1.2.2. RF POWER OUTPUT AT TERMINALS (2.0 W) ................................................................................................ 7 1.2.3. FREQUENCY STABILITY WITH TEMPERATURE VARIATION ........................................................................ 8 1.2.4. FREQUENCY STABILITY WITH PRIMARY VOLTAGE VARIATION............................................................... 10 1.2.5. TRANSMITTER UNWANTED EMISSIONS: CONDUCTED SPURIOUS (0.1 W) ............................................ 12 1.2.6. TRANSMITTER UNWANTED EMISSIONS: CONDUCTED SPURIOUS (10.0 W) .......................................... 13 1.2.7. TRANSMITTER UNWANTED EMISSIONS: CONDUCTED SPURIOUS (2.0 W) ............................................ 14 1.2.8. TRANSMITTER UNWANTED EMISSIONS: CONDUCTED SPURIOUS (0.5 W) ............................................ 15 1.2.9. TRANSMITTER UNWANTED EMISSIONS: RADIATED SPURIOUS (0.1 W) ................................................. 16 1.2.10. TRANSMITTER UNWANTED EMISSIONS: RADIATED SPURIOUS (10.0 W) ............................................. 17 1.2.13. TRANSIENT FREQUENCY BEHAVIOR OF TRANSMITTER (12.5 kHz)....................................................... 18 1.2.14. TRANSIENT FREQUENCY BEHAVIOR OF TRANSMITTER (6.25 kHz)....................................................... 19 1.2.15. TRANSIENT FREQUENCY BEHAVIOR OF TRANSMITTER (12.5 kHz)....................................................... 20 1.2.16. TRANSIENT FREQUENCY BEHAVIOR OF TRANSMITTER (6.25 kHz)....................................................... 21 1.2.17. TRANSMITTER OCCUPIED BANDWIDTH ................................................................................................... 22 1.2.18. TRANSMITTER OCCUPIED BANDWIDTH (4-CPFSK, 10.0 W, 6.25 kHz) ................................................... 23 1.2.19. TRANSMITTER OCCUPIED BANDWIDTH (16-DEQAM, 2.0 W, 6.25 kHz) .................................................. 24 1.2.20. TRANSMITTER OCCUPIED BANDWIDTH (D8PSK, 2.0 W, 6.25 kHz)......................................................... 25 1.2.21. TRANSMITTER OCCUPIED BANDWIDTH (π/4-DQPSK, 2.0 W, 6.25 kHz) ................................................. 26 1.2.22. TRANSMITTER OCCUPIED BANDWIDTH (4-CPFSK, 10.0 W, 12.5 kHz) ................................................... 27 1.2.23. TRANSMITTER OCCUPIED BANDWIDTH (16-DEQAM, 2.0 W, 12.5 kHz) .................................................. 28 1.2.24. TRANSMITTER OCCUPIED BANDWIDTH (D8PSK, 2.0 W, 12.5 kHz)......................................................... 29 1.2.25. TRANSMITTER OCCUPIED BANDWIDTH (π/4-DQPSK, 2.0 W, 12.5 kHz) ................................................. 30 1.3 Test Results 145.0125 MHz...................................................................................................................31 1.3.1. RF POWER OUTPUT AT TERMINALS (10.0 W) ............................................................................................ 32 1.3.2. RF POWER OUTPUT AT TERMINALS (2.0 W) .............................................................................................. 33 1.3.3. FREQUENCY STABILITY WITH TEMPERATURE VARIATION ...................................................................... 34 1.3.4. FREQUENCY STABILITY WITH PRIMARY VOLTAGE VARIATION............................................................... 36 1.3.5. TRANSMITTER UNWANTED EMISSIONS: CONDUCTED SPURIOUS (0.1 W) ............................................ 38 1.3.6. TRANSMITTER UNWANTED EMISSIONS: CONDUCTED SPURIOUS (10.0 W) .......................................... 39 1.3.7. TRANSMITTER UNWANTED EMISSIONS: CONDUCTED SPURIOUS (2.0 W) ............................................ 40 1.3.8. TRANSMITTER UNWANTED EMISSIONS: CONDUCTED SPURIOUS (0.5 W) ............................................ 41 1.3.9. TRANSMITTER UNWANTED EMISSIONS: RADIATED SPURIOUS (0.1 W) ................................................. 42 1.3.10. TRANSMITTER UNWANTED EMISSIONS: RADIATED SPURIOUS (10.0 W) ............................................. 43 1.3.13. TRANSIENT FREQUENCY BEHAVIOR OF TRANSMITTER (12.5 kHz)....................................................... 44 1.3.14. TRANSIENT FREQUENCY BEHAVIOR OF TRANSMITTER (6.25 kHz)....................................................... 45 1.3.15. TRANSIENT FREQUENCY BEHAVIOR OF TRANSMITTER (12.5 kHz)....................................................... 46 1.3.16. TRANSIENT FREQUENCY BEHAVIOR OF TRANSMITTER (6.25 kHz)....................................................... 47 1.3.17. TRANSMITTER OCCUPIED BANDWIDTH ................................................................................................... 48 1.3.18. TRANSMITTER OCCUPIED BANDWIDTH (4-CPFSK, 10.0 W, 6.25 kHz) ................................................... 49 1.3.19. TRANSMITTER OCCUPIED BANDWIDTH (16-DEQAM, 2.0 W, 6.25 kHz) .................................................. 50 1.3.20. TRANSMITTER OCCUPIED BANDWIDTH (…

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Test Setup Photos List of photographs: PHOTOGRAPH 1: Overall view of tested unit................................................................................................... 2 PHOTOGRAPH 2: Test site for radiated emissions – one view........................................................................ 3 PHOTOGRAPH 3: Test site for radiated emissions – second view .................................................................. 4 PHOTOGRAPH 4: Test site for conducted emissions ...................................................................................... 5 PHOTOGRAPH 5: Test site for conducted emissions (Test set up) ................................................................. 6 PHOTOGRAPH 1: Overall view of tested unit PHOTOGRAPH 2: Test site for radiated emissions – one view PHOTOGRAPH 3: Test site for radiated emissions – second view PHOTOGRAPH 4: Test site for conducted emissions PHOTOGRAPH 5: Test site for conducted emissions (Test set up) TEST UNIT ATTENUATOR HIGH PASS FILTER POWER SUPPLY SPECTRUM ANALYZER Filter By-Pass RF SIGNAL GENERATOR Step I