AIERIT13-144Handheld FM Transceiver

1 TYPE OF EXHIBIT:INSTRUCTION MANUALS FCC PART:2.1033 (c) MANUFACTURER:RITRON, INC. 505 West Carmel Drive Carmel, IN 46032 MODEL:SST-144 TYPE OF UNIT:VHF-FM Handheld Transceiver FCC ID:AIERIT13-144 DATE:April 25, 2001 Included is a draft of the Maintenance and Operating Manual for RITRON Model Patriot SST-144 VHF-FM Handheld Transceiver. Specifically, this manual includes a technical description of the SST-144 sufficient to establish compliance with the technical standards of the applicable rule part(s). This includes, but is not limited to, the following items required under FCC Part 2.1033 (c): (2)FCC Identifier. (3)A copy of the installation and operating instructions. (4)Type of emission. (5)Frequency range. (6)Range of operating power, and means to provide variation in operating power. (7)Maximum power rating. (8)DC voltage chart. (9)Tune-up procedure. (10) A description of all frequency determining and stabilization circuits. A description of the circuits used to suppress spurious radiation, limiting modulation, and limiting power. (12) Drawing with labels for controls and complete circuit diagrams. Signed: ____________________________________ Kevin G. Matson - Project Engineer TABLE OF CONTENTSSST-144 TOPIC PAGE IMPORTANT MAINTENANCE/REPAIR INFORMATION .. 1 SPECIFICATIONS GENERAL......................................................................... 2 CONTROLS ...................................................................... 2 TRANSMITTER................................................................. 2 RECEIVER........................................................................ 3 BATTERY ......................................................................... 3 INTRODUCTION GENERAL......................................................................... 4 Model Identification ..................................................... 4 FCC REGULATIONS Licensing..................................................................... 4 Safety Standards......................................................... 4 BATTERY CARE CHARGING....................................................................... 5 PRECAUTIONS ................................................................ 5 BATTERY REPLACEMENT .............................................. 5 Fig. 1 Battery Replacement ......................................... 5 BATTERY MAINTENANCE............................................... 6 BATTERY CONDITIONING .............................................. 6 OPERATION DESCRIPTION OF CONTROLS AND CONNECTORS..... 7 Fig. 2 Controls and Accessory Connectors.................. 7 RADIO OPERATION On-Off/Volume ............................................................ 8 Receive ....................................................................... 8 Selective Signaling Squelch ........................................ 8 Monitor ........................................................................ 8 Battery Saver .............................................................. 8 Transmit ...................................................................... 8 Channel Selection ....................................................... 8 WHAT THE RADIO TONES MEAN Power On/Self Check “OK........................................... 9 Error Tones ................................................................. 9 Channel Select............................................................ 9 Tone Squelch .............................................................. 9 Recharge Battery Alert ................................................ 9 OPTIONAL RADIO TONES Receiver Squelch Tone ............................................... 9 Busy Channel Inhibit ................................................... 9 Transmitter Time Out .................................................. 9 BELT CLIP INSTALLATION.............................................. 9 TROUBLESHOOTING General ..................................................................... 10 Battery ...................................................................... 10 Error Tones ............................................................... 10 Tone Coded Squelch................................................. 10 PROGRAMMING THE RADIO PTT (PUSH-TO-TALK) PROGRAMMING Fig. 3 Placing the Radio in Program / Readout Mode 11 Reading Out a Radio Channel’s Content ................... 11 PTT Programming the Radio..................................... 12 Return To Normal Operation ..................................... 12 PTT Programming Mistakes...................................... 12 Table 1 – PTT Programming Frequency Table.......... 13 Table 2 – Quiet Call Codes and Frequencies ............ 13 COMPUTER SOFTWARE COPYRIGHTS ...................... 13 PC COMPUTER PROGRAMMING ................................. 13 Programmable Features............................................ 14 Description of Features ............................................. 15 TOPIC PAGE THEORY OF OPERATION INTRODUCTION ............................................................. 16 POWER SUPPLY AND VOLTAGE DISTRIBUTION........ 16 Power Strobe............................................................. 16 Low Battery Voltage Detection................................... 16 REFERENCE OSCILLATOR ........................................... 16 SYNTHESIZER .............................................................. 16 Pin Numbers.............................................................. 16 Prescaler Divider / Synthesizer Controller.................. 16 VCO / Buffer Amplifiers ............................................. 17 Oscillator Modulation ................................................. 17 DIGITAL POTENTIOMETERS......................................... 17 RECEIVER ...................................................................... 17 RF Amplifier............................................................... 17 1st Mixer ............................................…

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1 TYPE OF EXHIBIT:STATEMENT OF CERTIFYING ENGINEER FCC PART:2.947 MANUFACTURER:RITRON, INC. 505 West Carmel Drive Carmel, IN 46032 MODEL:SST-144 TYPE OF UNIT:VHF-FM Handheld Transceiver FCC ID:AIERIT13-144 DATE:April 23, 2001 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. 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. Signed: __________________________________ Kevin G. Matson - Project Engineer 2 TYPE OF EXHIBIT:MANUFACTURER’S STATEMENT FCC PART:2.1033 (c)(1-2) MANUFACTURER:RITRON, INC. 505 West Carmel Drive Carmel, IN 46032 MODEL:SST-144 TYPE OF UNIT:VHF-FM Handheld Transceiver FCC ID:AIERIT13-144 DATE:April 23, 2001 The AIERIT13-144 is a 150 - 162 MHz VHF-FM Handheld Transceiver to be manufactured and marketed in the United States of America by the applicant, RITRON, Inc. of Carmel, Indiana. The AIERIT13-144 will be marketed by RITRON, Inc. as a Patriot model SST-144. The FCC designator for this unit is ......................... FCC ID: AIERIT13-144 RITRON, Inc. will be manufacturing and marketing the AIERIT13-144 handheld transceiver on a continuing basis. Signed: _______________________________________ Kevin G. Matson - Project Engineer

1 TYPE OF EXHIBIT:EXTERNAL PHOTOGRAPHS FCC PART:2.1033 (c)(12) MANUFACTURER:RITRON, INC. 505 West Carmel Drive Carmel, IN 46032 MODEL:SST-144 TYPE OF UNIT:VHF-FM Handheld Transceiver FCC ID:AIERIT13-144 DATE:May 17, 2001 Included in this exhibit are photographs of the RITRON model SST-144 VHF-FM Handheld Transceiver case assembly. Additional photographs of the equipment of sufficient clarity to reveal internal construction and define component placement are included with this Certification request as a separate exhibit. Signed: Kevin G. Matson - Project Engineer AIERIT13-144 SST-144 case assembly components PCB assembly screws to retain case bottom battery insulator battery pack case bottom with battery contacts and connector to main PCB hinged battery case threaded VHF antenna AIERIT13-144 SST-144 PCB installation into case AIERIT13-144 SST-144 battery pack installation into case. PCB assembly, case bottom, and battery insulator must be installed. AIERIT13-144 SST-144 controls, jacks, and control label jack cover audio / program jack Audio / charge jack microphone channel select switch push-to-talk switch volume down / off threaded VHF antenna Control label speaker on / volume up AIERIT13-144 SST-144 case back showing area for FCC identification label and belt clip installation.

TYPE OF EXHIBIT:INTERNAL PHOTOGRAPHS FCC PART:2.1033 (c)(12) MANUFACTURER:RITRON, INC. 505 West Carmel Drive Carmel, IN 46032 MODEL:SST-144 TYPE OF UNIT:VHF-FM Handheld Transceiver FCC ID:AIERIT13-144 DATE:May 17, 2001 Included in this exhibit are photographs of the RITRON Model SST-144 VHF-FM Handheld Transceiver printed circuit board assembly. Additional photographs of the equipment of sufficient clarity to reveal equipment construction and layout, labels for controls and meters, and chassis assembly are included with this Certification request as separate exhibits. Signed: Kevin G. Matson - Project Engineer AIERIT13-144 SST-144 top side PCB assembly with VCO shield and speaker removed AIERIT13-144 SST-144 complete top side PCB assembly AIERIT13-144 SST-144 complete bottom side PCB assembly

1 TYPE OF EXHIBIT:OPERATIONAL DESCRIPTION FCC PART:2.1033 (c) (3) MANUFACTURER:RITRON, INC. 505 West Carmel Drive Carmel, IN 46032 MODEL:SST-144 TYPE OF UNIT:VHF-FM Handheld Transceiver FCC ID:AIERIT13-144 DATE:May 18, 2001 Included in this exhibit are the operating instructions and theory of operation for the SST-144. The operating instructions and theory of operation included in this exhibit are excerpts of the Maintenance and Operating Manual for RITRON Model Patriot SST-144 VHF-FM Handheld Transceiver. The complete Maintenance and Operating Manual is included in this application for Certification as a separate exhibit. Signed: __________________________________ Kevin G. Matson - Project Engineer OPERATIONSST-144 7 CH ON OFF/HOLD VOLUME Antenna Vol Down/Off On/Vol Up Audio Accessory Jack Jack Cover Charge Jack Speaker Microphone Push-to-Talk Channel Selector Battery Access Door (Case bottom) Battery Charger Contacts (Case bottom) Fig. 2 Controls and Accessory Connectors DESCRIPTION OF CONTROLS AND CONNECTORS Antenna The flexible antenna radiates and receives radio signals. Before using the radio, be sure the antenna base is threaded fully into the radio’s antenna bushing. Use only the antenna(s) available from RITRON for the SST-144. Do not attempt to substitute with any other antenna. On/Volume Up This button switches on the radio, then increases the volume if you continue to press. Volume Down/Off This button decreases the volume, then shuts off the radio if you continue to press. Push-To-Talk The PTT activates the transmitter, and must be held down while you talk into the microphone. Release the PTT button to receive. Channel Selector Pressing this button selects the next channel. When the maximum number of channels is reached and you press this button, the radio resets to channel 1. Audio Accessory Jack This jack connects speaker audio to optional accessories, such as a remote speaker/ microphone or an earphone. For accessories that have a two-plug connector, the smaller plug is inserted into the charge jack. This jack is also used to program the radio using the optional PC programming kit. Charge Jack The battery may be charged through this jack using a standard RITRON wall socket charger cube. This jack also connects microphone audio to the optional remote speaker/microphone. Microphone The microphone converts your voice into electrical impulses, which are carried with your broadcast to receiving radios. Hold the radio about four inches away and talk into the microphone while transmitting. Shouting does not improve the listener’s reception. Speaker The speaker allows you to hear calls on your channel. Jack Cover This rubber cover seals out dust and moisture, etc. Snap the cover into the audio accessory and charge jack openings when the jacks are not being used. Battery Access (Case Bottom ) The battery door on the case bottom may be removed to access the battery. (Refer to the Battery Replacement section of this manual.) Drop-in Charger Contacts (Case Bottom ) Two charger contacts in the bottom of the SST-144 radio case allow the battery pack to be charged using an optional RITRON drop-in charger (model BCC-PS.) OPERATIONSST-144 8 RADIO OPERATION On-off/Volume To switch on the radio - press the On/Volume Up button. The radio will beep a number of times equal to the current channel number. To adjust the volume - press the volume up button until you reach the desired level. You should hear noise and any broadcasts on the channel. To turn off the radio - press and hold the Off/Volume Down button until two tones sound. To determine whether the radio is on - press the volume down button. If the radio is on, noise or activity on the channel is heard. Receive To hear calls from other users - adjust the volume as desired. The radio can receive broadcasts while the Push-To-Talk button is not being pressed. Whether or not you hear these broadcasts depends upon the squelch settings. There are two types of squelch used in the SST-144 portable. First is carrier squelch. This lets you hear all broadcasts on your channel strong enough for the radio to detect, and silences noise. Second is one of the selective signaling or “tone squelch” formats available on the SST-144. This allows you to screen out “on-channel” broadcasts that do not carry the correct code programmed for the radio. Note: It is possible that the beginning of a call might be missed while the radio is in battery saver mode. If this happens, ask the caller to repeat the message. Selective Signaling Squelch To activate tone squelch - simultaneously press both of the volume buttons. Hold for a second or two before releasing. When tone squelch is turned on, the handheld sounds one beep. When carrier squelch is on, the radio emits a "double beep." Note: If you continue to hold down the volume buttons after the beep (or double beep), the radio will start beeping repeatedly. This means that squelch is turned off. Release the buttons. To restore squelch, press and hold both of the volume buttons until the radio sounds a beep or double beep. Monitor To monitor the channel - press one of the volume control buttons. When you press the volume up or the volume down button, squelch turns off and all radio traffic on the channel (and noise) sounds in the speaker. Battery Saver The handheld has a programmable "battery saver" feature that conserves battery power. The battery saver constantly checks the radio's transmitter, receiver and controls for activity. If a number of seconds pass without the receiver detecting a call, and without the user operating a control, this feature removes power from most of the radio. During this "off-time," any activity restores full power. Every few fractions of a second, the battery saver applies power to the receiver, checking for broadcasts. It is possible that the first part of an incoming call might go unheard before activity is detected and power restored. If this happens, the caller can repeat his message.…

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1 TYPE OF EXHIBIT:TUNE-UP PROCEDURE AND PARTS LIST FCC PART:2.1033 (c) (9) MANUFACTURER:RITRON, INC. 505 West Carmel Drive Carmel, IN 46032 MODEL:SST-144 TYPE OF UNIT:VHF-FM Handheld Transceiver FCC ID:AIERIT13-144 DATE:May 18, 2001 Included in this exhibit is the tune-up procedure, parts list and semiconductor function list for the SST- 144. The tune-up procedure and parts list included in this exhibit are excerpts of the Maintenance and Operating Manual for the RITRON Model Patriot SST-144 VHF-FM Handheld Transceiver. The complete the Maintenance and Operating Manual is included with this application for Certification as a separate exhibit. Signed: __________________________________ Kevin G. Matson - Project Engineer ALIGNMENT PROCEDURESST-144 21 WARNING! An authorized RF service technician must perform test and alignment of the SST-144. Do not attempt service of the SST-144 if not completely familiar with the operation of frequency synthesized radio operation. The SST-144 can operate in both Narrow Band (2.5 KHz deviation) and Wide Band (5 KHz deviation) systems. RECOMMENDED TEST EQUIPMENT 1) 0 to +15 VDC, 2A current-limited power supply 2) RF Communications Test Set (to 162 MHz) with: - FM Deviation Meter - RF Wattmeter - Frequency Counter (to 162 MHz) - SINAD Measuring Device 3) Oscilloscope (to 20 MHz) 4) VTVM or DMM 5) RITRON PC Programming Kit 6) RITRON SST-SRVBD Test Module RADIO PREPARATION 1) Make sure the radio battery is fully charged. 2) Install the RITRON SST-SRVBD test assembly and serial programming cable as follows: a) Remove the SST-144 antenna from the radio. b) Plug the SST-SRVBD into the 2.5 mm and 3.5 mm jacks on top of the radio. c)Screw the SST-SRVBD antenna nut fully into the SST-144 antenna connector. d) Set the jumper on the SST-SRVBD assembly to the “UHF” position. e) Connect the serial programming cable from the PC computer (with the RITRON PC programming kit software installed) to the SST-SRVBD test assembly 3) Connect the FM communications test set to the BNC connector on the SST-SRVBD test assembly. 4) Turn on the radio to place it in operating mode. 5) From the PC Programmer on-screen menu, select “Tune Radio” to display the Alignment screen. 6) Set the RF Communications Test set to the Alignment Frequency indicated on the Alignment screen. 7) Press the appropriate “Select” button on the Alignment screen to make the following adjustments: SELECTAlignment FrequencyTransmit frequency Mod BalModulation balance ToneQC/DQC tone encode deviation wide and narrow band VoiceVoice deviation with no tone wide and narrow band Voice deviation with tone wide and narrow band PowerLow transmitter power High transmitter power 8) After you have completed alignment of the SST- 144, turn the radio off. This will remove the test frequencies and return to operation on the customer’s programmed frequencies. REFERENCE FREQUENCY 1) Make sure the unit has been switched on and is at room temperature (approximately +25 ° C) 2) Select “Frequency” from the PC Programmer “Alignment” screen. 3) Set the RF communications test set to the Alignment Frequency on the Alignment screen. 4) Press the “Tune” button on the Alignment screen to activate the transmitter. 5) Transmitter frequency error should be less than +/- 500 Hz. 6) If frequency adjustment is required, press the left arrow on the tuning bar to lower the frequency or the right arrow to raise the frequency. 7) Press the “Save” button to store the new alignment setting or “Cancel” to leave setting unchanged. ALIGNMENT PROCEDURESST-144 22 MODULATION BALANCE Transmitter modulation balance has been set at the factory and should not require adjustment. 1) Select “Mod Bal” from the PC Programmer “Alignment” screen. 2) Set the RF communications test set to the Alignment Frequency on the Alignment screen. 3) Press the “Tune” button on the Alignment screen to activate the transmitter. 4) Check the de-modulated waveform for a 20 Hz square wave. 5) If adjustment of the modulation balance is required, press the left arrow on the tuning bar to flatten the top of the waveform or the right arrow to reduce overshoot. 6) Press the “Save” button to store the new alignment setting or “Cancel” to leave setting unchanged. TRANSMITTER TONE DEVIATION Transmitter tone deviation has been set at the factory and should not require adjustment. 1) Select “Tone” from the PC Programmer “Alignment” screen. 2) Set the RF communications test set to the transmit frequency on the screen. 3) Select either “Wide Band” or “Narrow Band” by pressing the desired option button. 4) Press the “Tune” button on the Alignment screen to activate the transmitter. 5) If adjustment of the tone deviation is required, press the left arrow on the tuning bar to lower deviation or the right arrow to raise deviation. 6) Press the “Save” button to store the new alignment setting or “Cancel” to leave setting unchanged. TRANSMITTER VOICE DEVIATION Transmitter voice deviation has been set at the factory and should not require adjustment. 1) Select “Voice” from the PC Programmer “Alignment” screen. 2) Set the RF communications test set to the transmit frequency on the screen. 3) Select “Voice Only - Wide Band“, “Voice Only - Narrow Band”, “Voice & Tone – Wide Band”, or “Voice & Tone – Narrow Band” by pressing the desired option button. 4) Press the “Tune” button on the Alignment screen to activate the transmitter. 5) If adjustment of the voice deviation is required, press the left arrow on the tuning bar to lower deviation or the right arrow to raise deviation. 6) Press the “Save” button to store the new alignment setting or “Cancel” to leave setting unchanged. TRANSMITTER POWER Transmitter power has been set at the factory and should not require adjustment. 1) Select “Power” from the PC Programmer “Alignment” screen. 2) Set the RF communications test set to the transmit frequency on the screen. 3) Select “Low Power” or “High Power” by pressing the desired option button. 4) Press the “Tune” b…

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TYPE OF EXHIBIT:RF EXPOSURE FCC PART:1.1307 MANUFACTURER:RITRON, INC. 505 West Carmel Drive Carmel, IN 46032 MODEL:SST-144 TYPE OF UNIT:VHF-FM Transceiver FCC ID:AIERIT13-144 DATE:May 11, 2001 PLEASE NOTE THE FOLLOWING WITH REGARD TO RF EXPOSURE FOR THIS PRODUCT: 1. The User’s Manual contains the following text: EXPOSURE TO RADIO FREQUENCY ENERGY: The JMX/SST Series handheld radios consist of a transmitter and a receiver. The transmitter is active when the Push-to-Talk button is depressed and emits radio frequency (RF) energy at a power level of up to 3 watts. Analog modulation techniques are used. In 1991, the Institute of Electrical and Electronics Engineers (IEEE), and in 1992 the American National Standards Institute (ANSI) updated the 1982 ANSI standard for safety levels with respect to human exposure to RF energy. Over 120 scientists, engineers, and physicians from universities, government health agencies, and industry, after reviewing the available body of research, developed this updated Standard. In March 1993 the Federal Communications Commission (FCC) proposed the adoption of this updated Standard. The JMX/SST “Four Series” handheld radios are designed to comply with this Standard. To limit your exposure to levels at, or below, the levels in the Standard, please observe the following: • Use only the antenna(s) available from RITRON for these models. DO NOT attempt to substitute any other antenna. • Keep talk times as short and infrequent as possible. DO NOT depress the PTT button when not actually wishing to transmit. The radio is equipped with an internal timer to limit continuous transmit times. • When transmitting, hold the radio in front of the mouth at a distance of at least 4 inches. DO NOT hold the radio in such a manner that the antenna is next to, or touching, exposed parts of the body, especially the face or eyes while transmitting. • In belt mounted applications, when transmitting, remove the radio from the belt and hold away from the body at least 4 inches. • When using external headset accessories, hold the unit away from the body at least 4 inches while transmitting. • DO NOT allow children to operate the radio. 2. Antennas: Two antennas are available for this product, the AFS-150 and AFS-150-S. Both attach to the top of the radio and are shortened quarterwave helical wound. The connector is a ¼-20 stud attached to the antenna. It would be difficult to connect any other connector or antenna other than that supplied by the manufacturer. 3. Device Limitations on Transmission: The unit only emits significant RF power while the PTT button is actually depressed. This occurs only when the user makes a conscious effort to do so and would normally only occur when the user wishes to speak. The unit is a simplex unit; it does not transmit and receive simultaneously. The RF power amplifier is thermally limited to continuous operation for a period of time measured in minutes. An internal timeout timer exists which limits continuous transmit to one minute or less. For short term conversations, the expected duty cycle is 50% maximum. For long term, the duty cycle is 10% or less. Experience has shown that battery life calculations based upon a 5% transmit duty cycle tend to reflect real world operation. TYPE OF EXHIBIT:TRANSMITTER EFFECTIVE RADIATED POWER FCC PART:1.1307 MANUFACTURER:RITRON, INC. 505 West Carmel Drive Carmel, IN 46032 MODEL:JMX-144 TYPE OF UNIT:VHF-FM Transceiver FCC ID:AIERIT13-144 DATE:May 2, 2001 PROCEDURE: 1. The measurement for effective radiated power was taken at the RITRON, Inc. 3 meter test site. The measurement was made in accordance with FCC Rules & Regulations Part 2.947 using the procedures of IEC Publication 106. 2. The JMX-144 was aligned for transmitter operation on 156.100 MHz at the 4.0 watt maximum obtainable from the unit per the tune-up procedure outlined in the Preliminary Maintenance Manual. The unit was then terminated at the antenna port with the two antennas sold with this product. 3. All field strength measurements were made with the Hewlett-Packard Model 8559A Spectrum Analyzer and an Electro-Metrics BDA-25 Dipole Antenna. 4. The height and polarization of the field strength measurement antenna and orientation of the JMX-144 were varied to provide maximum field strength. 5. A substitution antenna, an Electro-Metrics EM-6924 adjustable dipole, was substituted for the JMX- 144 at the JMX-144’s location. An RF signal generator was set for the frequency of the JMX-144 with the level at the substitution antenna noted. 6. The polarization of the substitution antenna was adjusted for maximum signal strength at the field strength measuring antenna. The level at the field strength antenna was noted. TYPE OF EXHIBIT:TRANSMITTER EFFECTIVE RADIATED POWER FCC PART:1.1307 MANUFACTURER:RITRON, INC. 505 West Carmel Drive Carmel, IN 46032 MODEL:JMX-144 TYPE OF UNIT:VHF-FM Transceiver FCC ID:AIERIT13-144 DATE:May 2, 2001 EQUATIONS: 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 output. 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) TYPE OF EXHIBIT:TRANSMITTER EFFECTIVE RADIATED POWER FCC PART:1.307 MANUFACTURER:RITRON, INC. 505 West Carmel Drive Carmel, IN 46032 MODEL:JMX-144 TYPE OF UNIT:VHF-FM Transceiver FCC ID:AIERIT13-144 DATE:May 2, 2001 RESULTS: AntennaPr PgenPsGaERPERP (dBm) (dBm)(dBm)(dBd)(dBm)(watts) AFS-150+9.0 0.0-19.00.3+27.70.59 AFS-150-S+4.0 0.0-19.00.3+22.70.19 Certifying Engineer: ______________…

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TYPE OF EXHIBIT:SCHEMATIC AND COMPONENT PLACEMENT DRAWINGS FCC PART:2.1033 (c)(10,12) MANUFACTURER:RITRON, INC. 505 West Carmel Drive Carmel, IN 46032 MODEL:SST-144 TYPE OF UNIT:VHF-FM Handheld Transceiver FCC ID:AIERIT13-144 DATE:May 17, 2001 Included in this exhibit are schematic and component placement drawings for the RITRON Model SST-144 VHF-FM Handheld Transceiver per FCC Parts 2.1033(c)(10) and 2.1033(c)(12). Descriptions of all circuitry and devices provided for determining and stabilizing frequency, for suppression of spurious radiation, for limiting modulation, and for limiting power are provided in the Maintenance Manual, which is included with this Certification request as a separate exhibit. Additional photographs of the equipment of sufficient clarity to reveal equipment construction and layout, labels for controls and meters, and sufficient views of the internal construction to define component placement and chassis assembly are included with this Certification request as a separate exhibit. Signed: Kevin G. Matson - Project Engineer

1 TYPE OF EXHIBIT:TEST REPORT FCC PART:2.1033 (c)(14) MANUFACTURER:RITRON, INC. 505 West Carmel Drive Carmel, IN 46032 MODEL:SST-144 TYPE OF UNIT:VHF-FM Handheld Transceiver FCC ID:AIERIT13-144 DATE:April 23, 2001 The following is a list of attached exhibits required by the Federal Communications Commission for the application to and grant of FCC Certification. Statement of Certifying Engineer ........................................................................ 2.947 List of Test Equipment Used ............................................................................... 2.947 (d) Description of Measurement Facility .................................................................. 2.948 Manufacturer’s Statement ................................................................................... 2.1033 (c)(1-2) Required Measurements.................................................................................... 2.1033 (c)(14) Radio Frequency Power Output........................................................ 2.1046 Modulator Response................................................................…

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