AIERIT13-442Handheld FM Transceiver

Ritron Inc

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Application Details

Equipment Class: TNF - Licensed Non-Broadcast Transmitter Held to Face
Date of Grant: Jul 19, 2001
Application Purpose: Original Equipment
Date of Application: May 14, 2001
Equipment Note: Handheld FM Transceiver
Frequency Range: 450.00000000 - 470.00000000
Company: Ritron Inc
Country: United States

Documents & Files

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Document Text

Text extracted from the exhibit documents filed with the FCC. Open a document above to read the original.

Users Manual

TYPE OF EXHIBIT:INSTRUCTION MANUALS FCC PART:2.1033 (c)(3) MANUFACTURER:RITRON, INC. 505 West Carmel Drive Carmel, IN 46032 MODEL: SST-442 TYPE OF UNIT:UHF-FM Handheld Transceiver FCC ID: AIERIT13-442 DATE: May 11, 2001 Included in this exhibit is a draft of the Maintenance and Operating Manual for RITRON Model Patriot SST-442 UHF-FM Handheld Transc eiver. Specifically, this manual includes a technical desc ription of the SST-442 suff icient 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: Michael A. Pickard - Project Engineer TWO-WAY RADIO BY RITRON RITRON MODEL SST-442 UHF FM BAND PROGRAMMABLE HANDHELD RADIO MAINTENANCE / REPAIR / OPERATING MANUAL FOR USE BY AUTHORIZED SERVICE/ MAINTENANCE PERSONNEL ONLY SST-442-MRM REV A COPYRIGHT  2001 RITRON, INC. • ALL RIGHTS RESERVED RITRON  , JOBCOM  , and QUIET CALL  , ARE REGISTERED TRADEMARKS OF RITRON, INC. TABLE OF CONTENTSSST-442 TOPICPAGE IMPORTANT MAI NTENANCE/ 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 TOPICPAGE 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 .............…

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Users Manual

RITRON JMX/ SST "FOUR SERIES" OWNER'S MANUAL • Four-channel capability • Easier, enhanced programming method • 1, 2 and 3 Watt models • Quick-change battery • Drop-in charge capable • Weather scan feature (VHF only) • Easy-to-hear, high audio output • Built-in Quiet Call® tone feature • Customer-selectable frequency settings NE NE NE NE NE W W W W W !! !! !! !! !! "FOUR SERIES" HANDHELDS"FOUR SERIES" HANDHELDS "FOUR SERIES" HANDHELDS"FOUR SERIES" HANDHELDS "FOUR SERIES" HANDHELDS COMP COMP COMP COMP COMP AA AA A CTCT CTCT CT UL UL UL UL UL TRATRA TRATRA TRA -SMALL-SMALL -SMALL-SMALL -SMALL PR PR PR PR PR OFESSIONAL TWOFESSIONAL TW OFESSIONAL TWOFESSIONAL TW OFESSIONAL TW O-O- O-O- O- WW WW W AA AA A Y RADIOSY RADIOS Y RADIOSY RADIOS Y RADIOS DESCRIPTIONPAGE BATTERIES FIG-5: Battery Access and Installation.............................................. 8 Optional Charging Accessories........................................................... 8 Batteries................................................................................................ 9 Charging............................................................................................... 9 General................................................................................................. 9 Battery Maintenance and Conditioning............................................ 9 TROUBLESHOOTING Notes.................................................................................................... 1 0 Chart.................................................................................................... 1 0 FCC LICENSE REQUIRED FCC Regulations................................................................................. 11 Service................................................................................................. 11 How to Obtain an FCC Radio License.............................................. 11 LIMITED WARRANTY.............................................................BACK COVER TABLES: 1. Programmable Frequencies and Codes........................................ 5 2. Quiet Call Codes and Frequencies................................................ 5 FIGURES: 1. Belt Clip Installation........................................................................ 1 2. Radio Controls and Connectors...................................................... 2 3. To Scan Weather Frequencies....................................................... 3 4. To Place the Radio in Program/ Readout Mode .......................... 4 5. Battery Access and Installation ...................................................... 8 DESCRIPTIONPAGE ACCESSORIES Optional Accessories ............................................................................ iv INTRODUCTION General................................................................................................. 1 Model Identification............................................................................. 1 "Four Series" Model Numbers............................................................. 1 Inspection.............................................................................................. 1 New Programming Method................................................................. 1 FIG-1: Belt Clip Installation............................................................... 1 CONTROL & OPERATION ........................................................................... 2 FIG-2: Radio Controls and Connectors............................................. 2 OPERATION Weather Scan (VHF Radios Only)....................................................... 3 FIG-3: To Scan Weather Frequencies............................................... 3 What The Radio Tones Mean............................................................. 3 Interference Eliminator Codes............................................................ 3 TO DETERMINE FREQUENCIES & CODES IN "FOUR SERIES" JMX/ SST Select Each Channel to Beep Out (Read Out) Channel Contents .. 4 FIG-4: To Place the Radio in Program/ Readout Mode................. 4 TABLE 1: FREQUENCY CODES................................................................5 TABLE 2: INTERFERENCE ELIMINATOR (QUIET CALL®) TONE CODES5 TABLE 3: CHANNEL DELETE CODES.......................................................5 HOW TO PROGRAM "FOUR SERIES" JMX/ SST PORTABLES .............6 !! CAUTIONS — ALL RADIOS !! .................................................................7 TABLE OF CONTENTS NOTE:Refer to pages 1 and 8 for Accessory information. Call RITRON at 1-800-USA-1-USA (1-800-872-1872) for a complete Accessory listing or visit our website at www.ritron.com iii page 3 RITRON, INC. 1-800-USA-1-USA (1-800-872-1872) Have questions? Call 1-800-USA-1-USA (1-800-872-1872) or visit our website at www.ritron.com ACCESSORIES ii OPTIONAL ACCESSORIES: TO ORDER, CALL 1-800-USA-1-USA. BPJS-6N.......... Spare/ Replacement JMX Battery BPS-6N-SC...... Spare/ Replacement SST Battery BPS-6N-MH.....Replacement High Capacity Battery AFS-150...........VHF Molded Flex Antenna AFS-450...........UHF Molded Flex Antenna RHD-1X............Single Ear Headset RHD-4X............Dual Ear Headset RHD-5X............Lightweight Over-the-ear Earset /w In-line PTT RHD-6X............Lightweight Behind-the-head Earset w/ In-line PTT RSM-3X ...........Remote Speaker Microphone REP-2............... Low Profile Earphone CCL-B.............Cigarette Lighter Charger MHS-A.............Cordura Holster w/quick release BCJS-4AD ...... 4-Well Drop-in Charger: JMX BCPS-4AD ...... 4-Well Drop-in Charger: SST BCJS-AD.........Single-Well Drop-in Charger: JMX (Overnight) BCPS-AD......... Single-Well Drop-in Charger: SST (Overnight) BCC-PS...........Drop-in High-rate Charger/ Conditioner; for SST Models only Call RITRON for complete listings. RHD-4X Single Ear Headset RHD-4X Dual Ear Headset RSM-3X Remote Speaker Mic The NEW "Four Series" models contain updated programming features, and program differen…

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Attestation Statements

TYPE OF EXHIBIT:STATEMENT OF CERTIFYING ENGINEER FCC PART:2.947 MANUFACTURER:RITRON, INC. 505 West Carmel Drive Carmel, IN 46032 MODEL: SST-442 TYPE OF UNIT:UHF-FM Handheld Transceiver FCC ID: AIERIT13-442 DATE: May 15, 2001 I, Michael A. Pickard, have been employed by RITRON, Inc. since November 1979, working in the Engineering Department since June 1981 as a radio frequency Project Engineer. 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: Michael A. Pickard - Project Engineer 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-442 TYPE OF UNIT:UHF-FM Handheld Transceiver FCC ID: AIERIT13-442 DATE: May 15, 2001 The AIERIT13-442 is a 450 - 470 MHz UHF-FM Handheld Transceiver to be manufactured and marketed in the United States of America by the applicant, RITRON, Inc. of Carmel, Indiana. The AIERIT13-442 will be marketed by RITRON, Inc. as a Patriot model SST-442. The FCC designator for this unit is ......................... FCC ID: AIERIT13-442 RITRON, Inc. will be manufacturing and marketing the AIERIT13-442 handheld transceiver on a continuing basis. Signed: Michael A. Pickard - Project Engineer

External Photos

TYPE OF EXHIBIT:EXTERNAL PHOTOGRAPHS FCC PART:2.1033 (c)(12) MANUFACTURER:RITRON, INC. 505 West Carmel Drive Carmel, IN 46032 MODEL: SST-442 TYPE OF UNIT:UHF-FM Handheld Transceiver FCC ID: AIERIT13-442 DATE: May 4, 2001 Included in this exhibit are photographs of the RITRON Model SST-442 UHF-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: Michael A. Pickard - Project Engineer AIERIT13-442 SST-442 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 UHF antenna AIERIT13-442 SST-442 PCB installation into case AIERIT13-442 SST-442 battery pack installation into case. PCB assembly, case bottom, and battery insulator must be installed. AIERIT13-442 SST-442 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 UHF antenna Control label speaker on / volume up AIERIT13-442 SST-442 case back showing area for FCC identification label and belt clip installation.

External Photos

ID Label/Location Info

1 TYPE OF EXHIBIT:FCC DATA LABEL FCC PART:2.1033 (c)(11) MANUFACTURER:RITRON, INC. 505 West Carmel Drive Carmel, IN 46032 MODEL: SST-442 TYPE OF UNIT:UHF-FM Handheld Transceiver FCC ID: AIERIT13-442 DATE: April 11, 2001 The following drawing specifies the FCC Label for the SST-442. The label is placed on the SST-442 case back into a recessed area molded into the case back. A photograph is included to indicate the position of the label on the case back. Each serial number is recorded along with the date of manufacture and is kept on file at RITRON, Inc. The FCC data label will be made of a “tamper proof” destructive, .002” thick silver mylar material laminated to .003” Lexan film with Hi-Tack adhesive backing. The label background will be black with all graphics in silver. The area containing the FCC ID designator will be silver with black graphics. A 2nd small label of the same material will contain the manufacture date. Serialization will begin with the serial number A1234. The combined size of the serial label and manufacturing date label is 2.979” x 0.980”. Signed: Michael A. Pickard - Project Engineer TOLERANCES(EXCEPT AS NOTED) DECIMALFRACTIONAL ANGULAR REVISIONS NO. DATE BY 1 234 5 DRAWN BYCHK'DTRACED SCALEDATEAPP'D MATERIALDRAWING NO. RITRON, INC. 505 West Carmel Drive Carmel, IN 46032 2 : 1 4/10/01 MAP SST-442 FCC / MODEL LABEL 14200100 L C 1.95" .980" 5.525"2.760" 2.745" 1.38" L C FRONT VIEW (scale 2:1) VIEW A - ART WORK REGISTRATION (scale 1:1) YY X X SIDE VIEW (scale 2:1) GRAPHICS TO BE SUB-SURFACE, PRINTED ON MATTE SIDE FCC ID: AIERIT13-442 FREQ: 460-470 MHz MADE IN THE U.S.A. BY RITRON, INC. PH: 317-846-1201 SST-442 AREA FOR SERIAL NUMBER VELVET SIDE MATTE SIDE (+.000 -.020) (+.000 -.020) .062 R 2 PLC X X YY "FCC ID: AIERIT13-442" AND "FREQ: 460-470 MHz" B lack characters, bold helvetica type style (font), 5 point type size, aligned left in silver box. A llow space between box border and text as shown. "FOR BEST PERFORMANCE . . OF SERVICE" Silver characters, helvetica type style, 5 point type size, centered horizontally in the right half of the label as shown. "OPERATING INSTRUCTIONS . . . HOLD FOR OFF" Silver characters, bold helvetica type style, 3 point type size, aligned left in the box. Allow space between box border and text as shown. "MADE IN THE USA BY RITRON, INC." and " PH: 317-846-1201" are silver characters, bold helvetica type style, 5 point type size. A lign left as shown. "SST-442" is silver characters, bold helvetica type style, 9 point type size. A lign as shown . "www.ritron.com" is silver characters, helvetica type style, 7 point type size, centered horizontally in the left half of the label as shown. MATERIAL - .010 thick clear lexan film (#8 B35) with velvet/matte finish. ADHESIVE - P art to have .002 thick "tamper proof" destructive adhesive ( Scotch #467 or Engineering approved equivalent) with an easy to remove liner. GRAPHICS - T o be subsurface printed on the matte side. T o be per Ritron art work definition (see type specifications at left). To be registered to the part edge as shown in V iew A. The area designated for the SERIAL NUMBER will be silver, and is 0.55" x 0.14". S erial number characters are black, 8 point type size. Serial number to be centered within the silver area. NUMBER SERIALIZATION to use hot stamp process on .0015" silver compucal material with bold black print. PATRIOT SST Logo provided on stat sheet. Logo dimensions are 0.805" x 0.23", represented in View A by the box outline. (Box is for sizing only and will not appear.) Logo is silver. Center the logo horizontally, in the left half of the label as sh own. NOTES: 1.2.3.4.5. A 1234 .062 R 2 PLC FOR BEST PERFORMANCE REPLACE BATTERY PACK AFTER A MAXIMUM OF 18 MONTHS OF SERVICE. OPERATING INSTRUCTIONS - PRESS FOR ON . . . HOLD FOR VOLUME UP PRESS FOR VOLUME DOWN . . . HOLD FOR OFF FOR BEST PERFORMANCE REPLACE BATTERY PACK AFTER A MAXIMUM OF 18 MONTHS OF SERVICE. MADE IN THE U.S.A. BY RITRON, INC. PH: 317-846-1201 SST-442 PATRIOT SST LOGO HERE FCC ID: AIERIT13-442 FREQ: 460-470 MHzOPERATING INSTRUCTIONS - PRESS FOR ON . . . HOLD FOR VOLUME UP PRESS FOR VOLUME DOWN . . . HOLD FOR OFF PATRIOT SST LOGO HERE 6. www.ritron.com .050 BORDER ALL AROUND (+/- .010) A 1234 www.ritron.com TYPE SPECIFICATIONS: 1.2. 3.4.5.6. 3 TOLERANCES(EXCEPT AS NOTED) DECIMAL FRACTIONAL ANGULAR REVISIONS NO. DATE BY 1 2 34 5 DRAWN BYCHK'DTRACED SCALEDATEAPP'D MATERIALDRAWING NO. RITRON, INC. 505 West Carmel Drive Carmel, IN 46032 2 : 1 06/21/95 DHD SST/JMX FCC LABEL - MFG DATE 14200037 "MFG DATE" will be silver characters, bold helvetica type style, 5 point type size. Align left as shown. TYPE SPECIFICATIONS: MATERIAL - .002 thick silver mylar, laminated to .003 thick Lexan film (#8B35) with velvet/matte finish. ADHESIVE - Part to have .002 thick adhesive (Scotch #9471 or engineering approved equivalent) with an easy to remove liner. GRAPHICS - To be per Ritron art work definition. To be registered to the part edge as shown in view A. Background color to be black. The area designated for the date will be silver, and is 0.385" X 0.13". Characters will be 8 point type size. Date to be centered within the silver area. Date to use hot stamp process on .002" silver mylar material with bold black print. NOTES: 1. 2.3.4.5. FRONT VIEW (scale 2:1) YY X AREA FOR DATE .062 R 2 PLC X 1.95" .980" (+.000 -.020) 0.4" .200" (+/-.010) 06/95 MFG DATE: VIEW A - ART WORK REGISTRATION (scale 1:1) .050 (+/- .010) .020 (+/- .010) MFG DATE: 06/95 .050 (+/- .010)

ID Label/Location Info

RITRON, INC. 505 West Carmel Drive Carmel, IN 46032 REVISIONSTOLERANCES (EXCEPT AS NOTED) DECIMAL ± FRACTIONAL ± ANGULAR ± DRAWN BY NO. 1 2 3 4 5 DATEBY CHECKED TRACED SCALE DATE MATERIAL DRAWING NUMBER APPROVED MAP SST-442 FCC/MODEL LABEL 14200100 2 : 1 07/19/01 MADE IN THE U.S.A. BY RITRON, INC. PH: 317-846-1201 SST-442 www.ritron.com FOR BEST PERFORMANCE REPLACE BATTERY PACK AFTER A MAXIMUM OF 18 MONTHS OF SERVICE. FCC ID: AIERIT13-442 FREQ: 460-470 MHz Device must be restricted to occupational use to satisfy FCC RF exposure compliance. See owner's manual for specific operating instructions. CAUTION 12345 MADE IN THE U.S.A. BY RITRON, INC. PH: 317-846-1201 SST-442 www.ritron.com FOR BEST PERFORMANCE REPLACE BATTERY PACK AFTER A MAXIMUM OF 18 MONTHS OF SERVICE. FCC ID: AIERIT13-442 FREQ: 460-470 MHz Device must be restricted to occupational use to satisfy FCC RF exposure compliance. See owner's manual for specific operating instructions. CAUTION 12345 0.980" ( +0.000 ) -0.020 2.760" ( +0.000 ) -0.020 1.38" 0.062 R 2 PLC 0.062 R 2 PLC 0.050"±.010 BORDER ALL AROUND C L C L X X X Y Y Y AREA FOR SERIAL NUMBER VEL VET SIDE MA TTE SIDE GRAPHICS TO BE SUB-SURFACE, PRINTED ON MATTE SIDE VIEW A - ARTWORK REGISTRATION (scale 1:1) FRONT VIEW (scale 2:1) SIDE VIEW (scale 2:1) TYPE SPECIFICATIONS: 1. "FCC ID: AIERIT13-442" and "FREQ: 460-470 MHz" Black characters, Helvetica Bold, 5 point, align left, align left after colon character. Characters are centered in box as shown. 2. "Device must be restricted to......instructions." Silver characters, Helvetica, 5 point, justify left, centered in left half of label with CAUTION symbol as shown. 3. "MADE IN THE U.S.A. BY RITRON INC." and "PH: 317-846-1201" Silver characters, Helvetica Bold, 5 point, align left. 4. "SST-442" Silver characters, Helvetica Bold, 9 point. 5. "FOR BEST PERFORMANCE REPLACE....SERVICE." Silver characters, Helvetica, 5 point, align center in right half of the label as shown. 6. "www.ritron.com" Silver characters, Helvetica Bold, 7 point, align right. 7. "CAUTION" Silver characters, Helvetica Bold, 6 point, align center with Caution symbol. NOTES: 1. MATERIAL - .010 thick clear Lexan film (#8B35) with velvet/matte finish. 2. ADHESIVE - Part to have .002 thick "tamper proof" destructive adhesive (Scotch #467 or Engineering approved equivalent) with an easy to remove liner. 3. GRAPHICS - To be sub-surface printed on the matte side per Ritron art work definition (see type specifications at left), registered to the part edge as shown in View A. Background color to be black. 4. The area designated for the SERIAL NUMBER will be silver, and is 0.55" x 0.12". Serial number characters are black, 8 point size. Serial number to be centered within the silver area. 5. NUMBER SERIALIZATION to use hot stamp process on .0015" silver compucal material with bold black print. 6. CAUTION symbol provided on stat sheet. Symbol is silver with black character.

Internal Photos

TYPE OF EXHIBIT:INTERNAL PHOTOGRAPHS FCC PART:2.1033 (c)(12) MANUFACTURER:RITRON, INC. 505 West Carmel Drive Carmel, IN 46032 MODEL: SST-442 TYPE OF UNIT:UHF-FM Handheld Transceiver FCC ID: AIERIT13-442 DATE: May 3, 2001 Included in this exhibit are photographs of the RITRON Model SST-442 UHF-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: Michael A. Pickard - Project Engineer AIERIT13-442 SST-442 top side PCB assembly with VCO shield and speaker removed AIERIT13-442 SST-442 complete top side PCB assembly AIERIT13-442 SST-442 complete bottom side PCB assembly

Operational Description

TYPE OF EXHIBIT:OPERATIONAL DESCRIPTION FCC PART:2.1033 (c)(3) MANUFACTURER:RITRON, INC. 505 West Carmel Drive Carmel, IN 46032 MODEL: SST-442 TYPE OF UNIT:UHF-FM Handheld Transceiver FCC ID: AIERIT13-442 DATE: May 4, 2001 Included in this exhibit is the operating instructions and theory of operation for the SST-442. The operating instructions and theory of operation included in this exhibit are excepts of the Maintenance and Operating Manual for RITRON Model Patriot SST-442 UHF-FM Handheld Transceiver. The complete Maintenance and Operating Manual is included with this application for Certification as a separate exhibit. Signed: Michael A. Pickard - Project Engineer OPERATIONSST-442 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-442. 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-442 radio case allow the battery pack to be charged using an optional RITRON drop-in charger (model BCC-PS.) OPERATIONSST-442 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-442 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-442. 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 i…

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