OWDTR-0009-APanther 300M UHF-H (470-512MHz)

360 Herndon Parkway Suite 1400 Herndon, VA 20170 http://www.rheintech.com Com-Net Ericsson Critical Radio Systems, Inc. Model: Panther 300M UHF-H (470-512 MHz) FCC ID: OWDTR-0009-A FCC Certification Report Page 42 16 OPERATION MANUAL MM101030V1 R1A Operator’s Manual P ANTHER    300M Mobile Radio 2 TABLE OF CONTENTS Page MAXIMUM PERMISSIBLE EXPOSURE (MPE) LIMITS............................................................... 3 R ADIO O PERATOR W ARNING ............................................................................................................... 3 SAFETY TRAINING INFORMATION............................................................................................... 4 T RANSMITTER H AZARDS ..................................................................................................................... 6 S AFE D RIVING R ECOMMENDATIONS .................................................................................................... 7 OPERATING RULES AND REGULATIONS .................................................................................... 8 O PERATING T IPS .................................................................................................................................. 9 INTRODUCTION ................................................................................................................................ 10 RADIO INDICATORS ........................................................................................................................ 11 C ONTROLS ......................................................................................................................................... 11 O PTION B UTTON F UNCTIONS ............................................................................................................. 12 H OOKSWITCH F UNCTIONS ................................................................................................................. 14 DISPLAY STATUS AND ERROR CODES....................................................................................... 15 BASIC OPERATION........................................................................................................................... 17 S ELECTING A C HANNEL .................................................................................................................... 17 T RANSMITTING A B ASIC C ALL .......................................................................................................... 17 P UBLIC A DDRESS M ESSAGE ............................................................................................................... 17 C HANNEL G UARD .............................................................................................................................. 18 S ENDING DTMF W ITH T HE DTMF M ICROPHONE ............................................................................. 19 SELECTIVE SIGNALING ................................................................................................................. 20 TYPE 99 O PERATION ........................................................................................................................ 20 PROGRAMMABLE PTT FUNCTIONS ........................................................................................... 22 C HANNEL B USY L OCKOUT ................................................................................................................. 22 C HANNEL G UARD C HANNEL B USY L OCKOUT ................................................................................... 22 TYPE 99 D ISABLE A FTER PTT.......................................................................................................... 22 I GNITION S ENSE T X D ISABLE ............................................................................................................. 22 PROGRAMMABLE HORN ALERT FUNCTION ........................................................................... 23 E XTERNAL A LARMS ........................................................................................................................... 23 R ESETTING THE C AR H ORN A LERT .................................................................................................... 23 C AR H ORN A LERT I GNITION S ENSE O PTION ...................................................................................... 23 CLONING............................................................................................................................................. 23 This manual is published by Com-Net Ericsson Critical Radio Systems, Inc., without any warranty. Improvements and changes to this manual necessitated by typographical errors, inaccuracies of current information, or improvements to programs and/or equipment, may be made by Com-Net Ericsson Critical Radio Systems, Inc., at any time and without notice. Such changes will be incorporated into new editions of this manual. No part of this manual may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, for any purpose, without the express written permission of Com- Net Ericsson Critical Radio Systems, Inc. Copyright © 2001, Com-Net Ericsson Critical Radio Systems, Inc. All rights reserved. 3 MAXIMUM PERMISSIBLE EXPOSURE (MPE) LIMITS RADIO OPERATOR WARNING Do not transmit with this radio and antenna when persons are within the MPE Radius of the antenna, unless such persons (vehicle occupants or bystanders, for example) are shielded from the antenna field by a grounded metallic barrier (such as the user’s vehicle rooftop). The MPE Radius is the minimum distance from the antenna axis that ALL persons should maintain in order to avoid RF exposure higher than the allowable MPE level set by the FCC. FAILURE TO OBSERVE THESE LIMITS MAY ALLOW THOSE WITHIN THE MPE RADIUS TO EXPERIENCE RF RADIATION ABSORPTION WHICH EXCEEDS THE FCC MAXIMUM PERMISSIBLE EXPOSURE (MPE) LIMIT. IT IS THE …

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360 Herndon Parkway Suite 1400 Herndon, VA 20170 http://www.rheintech.com Com-Net Ericsson Critical Radio Systems, Inc. Model: Panther 300M UHF-H (470-512 MHz) FCC ID: OWDTR-0009-A FCC Certification Report Page 43 17 INSTRUCTION MANUAL MM101031V1 R1A Installation Manual P ANTHER TM 300M Mobile Radio 2 Copyright © 2000, Com-Net Ericsson Critical Radio Systems, Inc. All rights reserved. This manual is published by Com-Net Ericsson Critical Radio Systems, Inc., without any warranty. Improvements and changes to this manual necessitated by typographical errors, inaccuracies of current information, or improvements to programs and/or equipment, may be made by Com-Net Ericsson Critical Radio Systems, Inc., at any time and without notice. Such changes will be incorporated into new editions of this manual. No part of this manual may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, for any purpose, without the express written permission of Com-Net Ericsson Critical Radio Systems, Inc. The software contained in this device is copyrighted by Com-Net Ericsson Critical Radio Systems, Inc. Unpublished rights are reserved under the copyright laws of the United States. NOTICE! Repairs made to this equipment should be made only by an authorized service technician or facility designated by the supplier. Any repairs, alterations, or substitution of recommended parts made by the user to this equipment not approved by the manufacturer could void the user’s authority to operate the equipment in addition to the manufacturer’s warranty. NOTICE! 3 SAFETY INFORMATION ..................................................................................... 4 MAXIMUM PERMISSIBLE EXPOSURE (MPE) LIMITS ................................ 5 DETERMINING MPE RADIUS ....................................................................... 5 SAFETY TRAINING INFORMATION ................................................................ 6 INTRODUCTION .................................................................................................... 8 UNPACK AND CHECK THE EQUIPMENT ....................................................... 8 OPTIONS AND ACCESSORIES ...................................................................... 9 INSTALLATION ................................................................................................... 10 STEP 1 - PLAN THE INSTALLATION ......................................................... 10 STEP 2 - LOCATE THE TOOLS REQUIRED ............................................... 10 STEP 3 – EQUIPMENT PREPARATION ...................................................... 11 Mounting .................................................................................................. 11 STEP 4 – PROGRAM THE RADIO................................................................ 16 STEP 5 – INSTALL CABLES ......................................................................... 17 Power Cable ............................................................................................. 17 Connect To Ignition Sense ....................................................................... 18 Radio Mounting Procedures ..................................................................... 20 STEP 7 – INSTALL OPTIONS AND ACCESSORIES .................................. 22 Radio Option Cable .................................................................................. 22 External Speaker – 19A149590P11.......................................................... 25 Alarm (Horn) Relay Kit - 19A705499P1 ................................................. 28 Microphone Hanger/Hook Switch Mounting – 344A4678P1................... 30 Antenna .................................................................................................... 30 Noise Suppression Kit - Option KMPD1A (19A148539G1).................... 32 FIGURES Figure 1 – Typical Connection Diagram ..................................................................12 Figure 2 – Removing Top Cover..............................................................................13 Figure 3 – Factory Default Internal Speaker Jumper Setting (Enabled) ...................14 Figure 4 – Factory Default Settings For Jumper JP600 ............................................15 Figure 5 – Removing Plastic Cover..........................................................................16 Figure 6 – Power Cable RPM 113 7674/10..............................................................18 Figure 7 – Mounting Bracket and Mounting Bracket Hardware Kit ........................20 Figure 8 –Mounting Bracket Installation..................................................................21 Figure 9 – Mounting Radio to Bracket .....................................................................22 Figure 10 - Mounting the External Speaker .............................................................25 Figure 11 – External Speaker Option .......................................................................26 Figure 12 – Internal/External Speaker Relay............................................................27 Figure 13 - External Car Alert..................................................................................29 Figure 14 - External Alarm Relay ............................................................................29 Figure 15 – Ignition Sense Option............................................................................30 TABLES Table 1 - P ANTHER 300M Mobile Radio Options and Accessories ............................9 Table 2 – Radio Option Connector P3 Interface Description ...................................23 TABLE OF CONTENTS 4 SAFETY INFORMATION The operator of any mobile radio should be aware of certain hazards common to the operation of vehicular radio transmissions. A list of several possible hazards is given: 1. Explosive Atmospheres - Just as it is dangerous to fuel a vehicle with th…

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12 Figure 1 – Typical Connection Diagram

13 4. Remove the top cover by lifting the back and sliding it forward away from the chassis. Figure 2 – Removing Top Cover

14 Figure 3 – Factory Default Internal Speaker Jumper Setting (Enabled) Configure the Internal Radio Speaker Jumper (JP701) The P ANTHER 300M radio is shipped from the factory with the internal radio speaker jumper (JP701) set to 1-2 as shown in Figure 3. This setting enables the internal radio speaker. Set the jumper to 2-3 if 1) only the External Speaker is to be enabled or 2) the Internal/External Speaker option is to be enabled. Configure Ignition Sense Jumper (JP600) The Ignition Sense line is used to enable or disable transmit or car horn alert option through the vehicle ignition switch. If the Ignition Sense option is desired, Ignition Sense jumper JP600 must be set to 2-3. The P ANTHER 300M radio is shipped from the factory with the Ignition Sense jumper (JP600) set to 1-2 as shown in Figure 4. This default setting disables the Ignition Sense option. If your installation will not take advantage of the Ignition Sense line, skip this section and proceed to the next section.

15 To use the Ignition Sense line in any application, the option cable must be wired accordingly, see the section Connect To Ignition Sense on page 18. There are three parameters that define how the Ignition Sense feature will operate - a jumper on the radio (as described above), and two programmable parameters in the personality. The programmable parameters enable/disable Transmission and/or Horn Alert with respect to the vehicle ignition switch. For more information on the personality parameters, see the On-Line Help in Conventional ProGrammer (TQ-3389 R9A or later) or ProGrammer (TQ-3385 R9A or later). Figure 4 – Factory Default Settings For Jumper JP600

16 Connect Option Cable This section applies to installations that require an option cable. The option cable (RPM 113 7674/1) is required if you are installing: • External Speaker• Internal/External Speaker Option • Car Horn Alert• Ignition Sense • External Modulation• External Demodulation To connect the option cable to the radio: 1. Remove the two Phillips screws holding the plastic cover in place, from the back of the radio, see Figure 5. Figure 5 – Removing Plastic Cover 2. Insert the option cable through the hole left by removing the plastic cover. This will allow the connector to fit through the hole in the back of the radio. 3. Plug the option cable connector into J3 on the radio circuit board. 4. Finally, attach cable with the two Phillips screws. STEP 4 – PROGRAM THE RADIO All radios must be programmed with a radio personality. There are many parameters in the P ANTHER 300M mobile radio that need to be setup and defined for the radio to operate appropriately for each application. Conventional ProGrammer (TQ-3389 R9A or later) or ProGrammer (TQ-3385 R9A or later) is the software used to create 17 the personality for the P ANTHER 300M radio. The radio personality is a computer file that defines all the operating parameters for the radio. For more information on programming the P ANTHER 300M radio, see the On-Line Help provided with Conventional ProGrammer (TQ-3389 R9A or later) or ProGrammer (TQ-3385 R9A or later). Typically, the radio is programmed before it is installed in a vehicle. STEP 5 – INSTALL CABLES The P ANTHER 300M Mobile Radio is installed as a front mount radio. The location of the mount, the application, and the options to be installed should be considered when planning the cable runs. The cable diagram in Figure 1 should be referenced throughout the installation process. Power Cable The power cable RPM 113 7674/10 consists of a two-wire cable, see Figure 6. The red fused lead supplies power to the radio directly from the vehicle battery. Ignition Sense lead, through the separate option cable, is used by the radio electronics to determine when the ignition switch is turned on. The black lead is the radio ground connection. To install the power cable: 1. Remove the fuse from the power cable. 2. When the power cable is wired directly to the vehicle’s battery, it is necessary to route the red power lead through the vehicle’s firewall. If an existing hole is not conveniently located in the firewall, drill a 1/2-inch hole in the firewall for the cable run and insert a rubber grommet. This grommet is required to prevent lead chaffing. Additional grommets may be required if the leads must pass through shields or guards in the engine compartment. 18 Figure 6 – Power Cable RPM 113 7674/10 Route the lead away from high heat sources in the engine compartment that may cause lead damage and introduce a fire hazard. In addition, the lead should not be routed near electrical noise sources such as electronic ignition modules or cruise control modules. 3. Secure the cable at several locations within the engine compartment to prevent possible damage to the cable. 4. Connect the BLACK lead to the vehicle chassis. Connect the lead as close to the radio as possible. DO NOT connect the BLACK lead to the “NEG” or “-“ battery post. Connect the RED lead to the positive (“POS” or “+”) battery post. See Figure 6. " The power source must have a minimum current supply capability of 13 amps. Connect To Ignition Sense The ignition sense line is used to enable or disable transmit or the Car Horn Alert option through the vehicle ignition switch. For a 19 detailed description on how to configure the Ignition Sense line, see the section Configure Ignition Sense Jumper on page 14. Regardless of how the ignition sense line is configured, the option cable must be wired as described below for the feature to work. Connect Pin 13 of the option cable to an ignition “ON” sense point (preferably an “Accessory” point in the vehicle fuse panel) that is switched on when the vehicle ignition switch is in the ACCESSORY and RUN positions. This lead should be connected so the vehicle fuse protection is used. See Figure 6. " The DB-25 male connector that connects to the option cable is user-supplied. The “Accessory” point should drop to ZERO volts when cranking the engine and return to +12 volts after the engine is started. If a point is chosen that drops to a voltage between zero and +12 volts, the radio may execute a power-up cycle several times during start up. It is recommended that the terminal be measured with a voltmeter to be sure it shuts off (goes to zero volts) during the cranking of the engine. Certain problems may be encountered when accessory equipment is connected to the ignition or accessory lines of the vehicle, where these lines may have large filter capacitors and a leakage path present. If the radio does not turn off within a reasonable amount of time after the ignition is turned off, first try a different accessory or ignition A+ pick up point in the vehicle. Many vehicles have more than one circuit that is switched by the ignition switch, and one may be available that does not have large filter capacitors or a leakage path present. If a different pickup point cannot be found, then add a 470-ohm, 1-watt resistor from the ignition A+ pick point to ground. This will discharge the capacitor(s) or reduce the leakage voltage to a low value. Current drain through this resistor will be minimal (less than 0.03A) when the ignition is switched on. CAUTION 20 Figure 7 – Mounting Bracket and Mounting Bracket Hardware Kit Radio Mounting Procedures The following procedures are used to mount the radio. 1. Using the bracket as a template, mark and drill the mounting holes using a No. 31 (1/8) drill bit. Be sure to leave enough room at the rear of the radio unit for the cable connections and airflow. Be careful to avoid damaging some vital part (fuel tank, transmission housing, etc.) of the vehicle when drilling …

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12 PAGE 1 of 1 PREPARED BY: PHONE: DATE: REV. DOCUMENT INFO: Bryan McWatters (804) 385-2146 2/26/2001 A BM022601-1 Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 To Whom It May Concern: Please be advised that Com-Net Ericsson authorizes Rhein Tech Laboratories, Inc. to submit applications on our behalf until otherwise notified. All correspondence concerning such application should be directed to myself at the address or numbers found below. We certify that we are not subject to denial of federal benefits, that includes FCC benefits, pursuant to Section 5301 of the Anti-Drug abuse ACT of 1988, U.S.C. 682 and as defined in 47 CFR Part 1 §1.2002(b). Best Regards, Signature Bryan McWatters Mgr. Engineering Regulatory Com-NetEricsson 3315 Old Forest Road Lynchburg VA, 24501 804-385-2146 Cell 804-258-6615 Fax 804-385-2195 [email protected] [email protected] 22 PAGE 2 of 1 PREPARED BY: PHONE: DATE: REV. DOCUMENT INFO: Bryan McWatters (804) 385-2146 2/26/2001 A BM022601-1

360 Herndon Parkway Suite 1400 Herndon, VA 20170 http://www.rheintech.com Com-Net Ericsson Critical Radio Systems, Inc. Model: Panther 300M UHF-H (470-512 MHz) FCC ID: OWDTR-0009-A FCC Certification Report Page 54 22 EXTERNAL EUT PICTURES 360 Herndon Parkway Suite 1400 Herndon, VA 20170 http://www.rheintech.com Com-Net Ericsson Critical Radio Systems, Inc. Model: Panther 300M UHF-H (470-512 MHz) FCC ID: OWDTR-0009-A FCC Certification Report Page 55 360 Herndon Parkway Suite 1400 Herndon, VA 20170 http://www.rheintech.com Com-Net Ericsson Critical Radio Systems, Inc. Model: Panther 300M UHF-H (470-512 MHz) FCC ID: OWDTR-0009-A FCC Certification Report Page 56 360 Herndon Parkway Suite 1400 Herndon, VA 20170 http://www.rheintech.com Com-Net Ericsson Critical Radio Systems, Inc. Model: Panther 300M UHF-H (470-512 MHz) FCC ID: OWDTR-0009-A FCC Certification Report Page 57

360 Herndon Parkway Suite 1400 Herndon, VA 20170 http://www.rheintech.com Com-Net Ericsson Critical Radio Systems, Inc. Model: Panther 300M UHF-H (470-512 MHz) FCC ID: OWDTR-0009-A FCC Certification Report Page 41 15 LABEL INFORMATION 15.1 WARNING LABEL Dimensions (L): 39.20 mm MAX, 39.1 mm NOMINAL (W): 13.00 mm MAX, 12.9 mm NOMINAL 15.2 FCC ID LABEL Dimensions (L): 39.20 mm MAX, 39.1 mm NOMINAL (W): 16.00 mm MAX, 15.9 mm NOMINAL 15.3 LOCATION OF LABEL ON EUT CAUTION: Device must be restricted to occupational use to satisfy FCC RF exposure compliance. See owner’s manual for specific operating requirements. Com-Net Ericsson Serial Number: XXXXXXX FCC ID: OWDTR-0009-A Label will be placed where battery pack is installed on the device. (recessed back cover)

360 Herndon Parkway Suite 1400 Herndon, VA 20170 http://www.rheintech.com Com-Net Ericsson Critical Radio Systems, Inc. Model: Panther 300M UHF-H (470-512 MHz) FCC ID: OWDTR-0009-A FCC Certification Report Page 40 14 PRODUCT DESCRIPTION 1. CIRCUIT ANALYSIS The UHF – High split PANTHER 300M (KRD 103 154/4) is a 6-channel, dual-conversion, super- heterodyne FM land mobile radio transceiver operating in the 470 – 512 MHz band. It is designed to meet FCC regulatory requirements and the land mobile radio industry standard TIA/EIA-603. Refer to the Logic and RF Diagrams in Figure 1, and Figure 2, respectively. RECEIVER Receiver Front End The receiver front end comprises the following stages: • The transmitter Low Pass Filter, • A transmit/receive switch controlled by the switching of PIN diodes, • The first Band Pass Filter, • An RF low noise amplifier (LNA), and • A second Band Pass Filter, and a double-balanced first mixer (DBM). These filters, RF LNA, and DBM are designed to provide appropriate filtering to minimize reception of undesired receive signals and provide the appropriate noise figure to allow reception of desired results. Receiver spurious response, sensitivity, and intermodulation performance are greatly affected by the design of the RX front end. The first Local Oscillator (L.O.) signal for the first mixer is generated in the Voltage Controlled Oscillator (VCO) module and amplified in a Local Oscillator amplifier to provide the optimum L.O. drive level to the first mixer. Since this L.O. drive signal is low side injection and the desired first IF frequency is 55.05 MHz, the frequency range of the first L.O. signals are 414.950 – 456.950 MHz. Receiver Back End The back end of the receiver is a dual-conversion receiver with a first IF frequency at 55.05 MHz and a second IF frequency at 450 kHz. The receiver back end has the following stages: • The first IF crystal filter, • A low noise IF amplifier, • A second IF crystal filter, and • A receiver IF/amplifier/limiter IC. Figure 1 – PANTHER 300M Logic Block Diagram Figure 2 – PANTHER 300M RF Block Diagram These stages provide the desired adjacent channel selectivity, receiver spurious response performance, and demodulation of the analog FM receive signals. The back end has been designed to provide switchable selectivity performance for either 12.5 kHz or 25 kHz channel spaced equipment. This is accomplished by selection of either a wide or narrow 450 kHz ceramic filter. Channel spacing is programmable on a per-channel basis. The receiver IF/amplifier/limiter IC takes the incoming receive signal and mixes it down to the secondary IF frequency 450 kHz. The second L.O. drive signal is normally a low side injection 54.600 MHz signal derived from the synthesizer IC. (An optional 55.500 MHz high side injection signal can be synthesized for improved receiver self-quieting performance on certain frequencies). The FM detector is a quadrature detector that provides recovered receive audio. TRANSMITTER The transmitter is an FM, 40-watt rated transmitter. It can be programmed on a per- channel basis for either 40 or 20 watts. The initial drive level for the transmitter is the VCO. The VCO frequency range is 470 – 512 MHz. The VCO output is amplified in a pre-driver and a driver stage and then input as the drive signal into the Power Amplifier (PA) module. The PA module amplifies the drive signal to approximately 50 watts. The PA output power then is transmitted through a directional coupler that is used for detecting forward and reverse power, the transmit/receive switch, and finally the TX Low Pass Filter. The TX Low Pass Filter properly attenuates the harmonics of the desired carrier to meet FCC TX conducted spurious specifications of ≤20 dBm. The losses through the post-PA stages reduce the output power to a nominal 42 watts. This level is established by the setting of RF power tracking data in the Maintenance software application. (Note: RF power is set ONLY by qualified trained land mobile radio technicians.) Regulating the voltage to the PA and PA driver section through pass transistor Q404 controls the transmitter output power. The pass transistor is controlled by forward and reverse power feedback loops and the microprocessor power set level. The forward power is sensed using a forward coupler in conjunction with an RF rectifier and a LPF. The reverse power circuitry is similar to the forward power circuit. The microprocessor power set level is determined by the power tracking data table stored in memory. SYNTHESIZER The heart of the synthesizer design is the use of a dual serial input Phase-Locked-Loop Frequency Synthesizer IC (similar to Fujitsu MB15U10). A Temperature Compensated Crystal Oscillator (TCXO) provides the reference frequency for the synthesizer. The TCXO is a 16.8 MHz oscillator, ±2.5 ppm from -30°C to +60°C. The TCXO and the output of the VCO are divided down and phase compared at 6.25 kHz. The synthesizer hardware, along with the radio software, allows TX and RX frequencies to be synthesized every 12.5 kHz over the band split range. The error voltage provided at the output of the phase detector is filtered by a loop filter to provide a correction voltage to the VCO to set either transmit frequency or receiver L.O. frequency on channel. The loop filter also minimizes spurious input to the VCO. The microprocessor controls whether the loop filter is in a narrow or wide bandwidth. Wide bandwidth allows faster switching of synthesizer frequencies; narrow bandwidth optimizes transmit or receive Hum and Noise performance. BASEBAND PROCESSING Baseband processing is primarily controlled by an Audio Signal Processor (ASP) IC (similar to an AKM AK2344). Recovered receive audio from the FM demodulator is first sent to an amplifier. This amplifier’s gain is dependent on whether the channel is programmed for wide or narrowband mode. If the channel is programmed for narrowband mode, the audio gain is adjusted to twice the gain for w…

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360 Herndon Parkway Suite 1400 Herndon, VA 20170 http://www.rheintech.com Com-Net Ericsson Critical Radio Systems, Inc. Model: Panther 300M UHF-H (470-512 MHz) FCC ID: OWDTR-0009-A FCC Certification Report Page 39 13 RF EXPOSURE INFORMATION February 19, 2001 Federal Communications Commissions Authorization & Evaluation Division 7435 Oakland Mills Road Columbia, Maryland 21046 Attention: Equipment Authorization Branch Subject: MPE , OWDTR-0009-A 1. The installation and operators manuals state the limit for uncontrolled exposure along with a statement as to the responsibility of users for the maintenance of the MPE radius with respect to bystanders. The instructions are unambiguous concerning the fact that a maximum gain antenna for vehicular and desktop basestation mounts are stated specifically to be 3 dBd and 6 dBd respectively 2. MPE limits were calculated using a worst case scenario of a 3dBd gain antenna for vehicular mounts and a 6 dBd gain antenna for desktop basestation (building roof top/tower ) mounts. A maximum power of the radio was found to be 42 watts conducted, this value was used in the estimation for MPE radius. The equation found in OET 65, section 2 and equation 4 was used for the estimation. 3 dB was subtracted from the EIRP value to allow for the 50 percent duty cycle for a push-to-talk radio. A work sheet from a “maple” mathematics program was uploaded to clearly show how the computation for MPE radius was performed. The same radius is being used for this r…

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