C8LBT6MVHF Airband mobile transceiver

T6M Service Manual Issue 1 PARK AIR ELECTRONICS LTD NORTHFIELDS MARKET DEEPING PETERBOROUGH PE6 8UE TEL:(01778) 345434 FAX:(01778) 342877 T6M SERIES MOBILE SERVICE MANUAL – SM/16/1.0Page i Copyright Information © 2000 Park Air Electronics All rights reserved. No part of this publication may be reproduced, transmitted, transcribed, or stored in a retrieval system, or translated into any language without the written permission of Park Air Electronics. No part of any copyrighted computer programs contained in the products referred to in this manual may be copied or reproduced without the express written consent of Park Air Electronics. Park Air Electronics reserves the right to change the products described in this manual without prior notice. is a trademark of Park Air Electronics. is a trademark of Intek Global Corporation IBM and PC are trademarks of IBM Inc. I 2 C is a trademark of Philips Federal Communications Commission (FCC) Regulations ♦ This device complies with Part 15 of the FCC Rules. Operation is subject to the condition that this device does not cause harmful interference. ♦ You are required to obtain a station license before transmitting from your mobile equipment. ♦ This equipment is only licensed for operation on 25 kHz channel spacing. Operation on 8.33 kHz channel spacing is restricted to European customers. ♦ The mobile transmitter power output must not exceed the output necessary for satisfactory technical operation taking account of local conditions and the area to be covered. ♦ The mobile transmitter frequency and parameters should be checked by authorised service personnel before use, and at least yearly thereafter. T6M SERIES MOBILE SERVICE MANUAL – SM/16/1.0Page ii Safety Information ♦ DO NOT operate this equipment with the antenna close to or touching eyes, face, or exposed body parts. ♦ KEEP any mobile equipment containing a transmitter out of reach of children. ♦ AVOID holding the transmit (PTT) switch in the ‘ON’ position when not communicating. ♦ DO NOT operate equipment at filling stations. ♦ DO NOT operate equipment in vicinity of explosives or explosive atmospheres (e.g. in a blasting quarry). ♦ The Power Amplifier Module used in these mobile radios contains beryllium oxide, which is extremely toxic. In the unlikely event of coming into contact with beryllium oxide, wash the affected area thoroughly with soap and water. If the skin is broken obtain medical assistance. If there is eye contact, wash for 15 minutes with running water, including under the eyelids and seek medical attention. If ingested or inhaled, seek medical attention immediately. Repairs, Modifications and Maintenance ♦ If any operational difficulties arise while using this product, report them to authorized service personnel as soon as possible. ♦ This system contains no user serviceable parts. Unauthorized adjustments or modifications will void the warranty and may lead to emissions outside FCC limits. ♦ DO NOT connect an external RF power amplifier to this equipment. Patent Information ♦ The Linear Modulation techniques described in this publication are subject to Patents issued to the British Technology Group (BTG) and Linear Modulation Technology (LMT) T6M SERIES MOBILE SERVICE MANUAL – SM/16/1.0Page iii ♦ Patent No’s are: BTG – UK 2161661, 2163326; US 4691375, 4679243: LMT - UK 2243058, 2274231, 2272589, 2293935: EU 0447237, 0725495, 0598585, 0648012, 0706259: US 5249202, 5381108, 5507017, 5623226. T6M SERIES MOBILE SERVICE MANUAL – SM/16/1.0Page iv Table Of Contents Section 1 INTRODUCTION 2 SPECIFICATION 3 EQUIPMENT DESCRIPTION 4 INSTALLATION 5 OPERATION 6 PERFORMANCE TESTING 7 DETAILED CIRCUIT DESCRIPTION 8 CIRCUIT DIAGRAMS 9 BOARD LAYOUTS 10 GENERAL ASSEMBLIES 11 PARTS LIST 12 ACCESSORIES AND LEADS 13 LOOMS T6M SERIES MOBILE SERVICE MANUAL – SM/16/1.0Page v Amendment Schedule Amendments to this manual will be issued to incorporate changes or detail additional information. Amended pages will be identified by the amendment date and number, which will be shown at the foot of the page. Record incorporation of amendments to this manual on this page. If a new issue of this manual is made all amendments will be incorporated. DateAmdt. No.Date IncorporatedReason for Change If you find any errors or omissions in this manual, or you have any suggestions for improvements please write to the address shown on the front page. INTRODUCTION T6M SERIES MOBILE SERVICE MANUAL – SM/16/1.0Page 1-1 1 INTRODUCTION The Park Air Electronics (PAE) mobile transceiver Type T6M is a multi- channel VHF AM equipment operating in the frequency range 118 to 137 MHz with a bandwidth of 8.33 or 25 kHz. The transceiver is designed for vehicle mounting via a bracket, usually around the dash board area. The equipment, which operates from a +13.2 volt, is supplied with mounting bracket and plug in microphone. The transceiver provides a nominal 8 watt output. The required frequencies, priority frequencies and scan facilities are normally programmed, to the user’s requirements, during manufacture or by the equipment supplier. If a user wishes to programme the equipment, then disk based programming software and a programming lead can be supplied by PAE. SPECIFICATIONS T6M SERIES MOBILE SERVICE MANUAL – SM/16/1.0 Page 2-1 2. T6M Series Specifications The following specifications are intended for testing and servicing the mobile radio. Specifications are subject to change without notice. 2.1 General Air InterfaceNone Operating ModeSingle Frequency Simplex Frequency Range Receive118 - 137 MHz Transmit 118 - 137 MHz Channel Bandwidth25 kHz and 8.33 kHz. Channel Increment8.33 kHz Input Voltage13.2 VDC nominal (10.8 V to 18 V), negative ground Max Receive Current2A Max Off Current100mA Audio Output4W into 4ohm external speaker (<10%THD) Temperature Range Normal+15°C to +35°C Operating-20°C to +55°C Storage-40°C to +85°C Dimensions Width 177 mm (6.95”) Depth 228 mm (8.98”) Height 50 mm (1.95”) Weight1.75 kg (±0.1kg) ApprovalsCE, …

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Northfields, Market Deeping, Peterborough, PE6 8UE, England. Tel: +44 (0) 1778 345434 Fax: 342877 Sales Fax: 341286 www.parkair.co.uk Registered in England 1951792 An ISO9001 Approved Company A subsidiary of Northrop Grumman Corporation 2 June, 2000 Federal Communications Commission Equipment Approval Services P.O. Box 358315 Pittsburgh PA 15251-5315 USA Dear Sirs, Please find enclosed an application for Type Certification of a mobile radio under Part 87 rules. This equipment is a VHF AM transceiver model number BT6M for VHF ground to air communication use in licensed installations. This radio is capable of operating with channel spacing’s of 8.33kHz and 25kHz however, for the American market the equipment shall only be sold for operation on 25kHz-channel spacing. Only radios supplied to the American market for operation on 25kHz shall be marked with the FCC ID number. Should you require further information in support of this application please do not hesitate to contact me. Yours faithfully, Allan Horsfield Principal Engineer EMC and Approvals Message: Commercial, in Confidence

Northfields, Market Deeping, Peterborough, PE6 8UE, England. Tel: +44 (0) 1778 345434 Fax: 342877 Sales Fax: 341286 www.parkair.co.uk Registered in England 1951792 An ISO9001 Approved Company A subsidiary of Northrop Grumman Corporation 2 June, 2000 Federal Communicatio ns Co mmission Equipment Approval Services PO Box 358315 Pittsb urgh PA 15251-5315 Reference: C8LBT6M 731 Confirmation No. EA 97773 Request for Confidentiality Dear Sir or Madame, Park Air Electronics respectfully requests that all circuit / block diagrams provided for this application should be regarded as Company Confidential and not made available to third parties. The product includes advanced digital signal processing technology which ensures the Company remains a world leader in this field of communications. Yours faithfully, Allan Horsfield Principal Engineer EMC and Approvals

PAE T6M Mobile Radio Model BT6M C8LBT6M FCC ApplicationPage 1 of 1 ---------------------------------------------------------------------------------------------------------------------------------------------- ------ LIST OF EXHIBITS EXHIBIT AFCC Identification label position illustration Photograph of equipment; front view with ancillaries Photographs of equipment; internal view - top Photograph of equipment; internal views - bottom EXHIBIT BTest Report for FCC Type Acceptance EXHIBIT CEquipment circuit description and block diagram EXHIBIT DOperators User Guide EXHIBIT EBoard Layouts EXHIBIT FCircuit Diagrams EXHIBIT GSales leaflet

2 June, 2000 FAA Spectrum Engineering Division 800 Independence Avenue SW Washington, DC 20591 Dear Sirs, Please be advised that we are making an application to the Federal Communications Commission to obtain an Equipment Authorisation Grant for Park Air Electronics VHF mobile radio type T6M model number BT6M. The equipment provides 8W RF output power in the 118 – 136.975 MHz band employing A3E (AM) modulation. A summary of the equipment’s performance is attached. Yours faithfully, Allan Horsfield Principal Engineer EMC and Approvals Attachments: Sales leaflet. FAA Notification of FCC Type Acceptance Application for PAE B6350. General FCC NumberC8LBT6M ManufacturerPark Air Electronics Ltd. England. Type T6M VHF mobile transceiver Model NumberBT6M RF Output Power8 Watts Antenna port50R BNC connector Frequency range118 MHz to 136.975 MHz. Method of tuningPre programmed frequencies selected by front panel controls. Channelling capability25 kHz and 8.33kHz. Emission bandwidthWithin FCC limits see attached report summary Emission type6K0A3EJN Emission/harmonicsSee attached report summary Description The Park Air Electronics (PAE) mobile transceiver Type T6M is a multi-channel VHF AM equipment operating in the frequency range 118 to 137 MHz with a bandwidth of 8.33 or 25 kHz. The transceiver is designed for vehicle mounting via a bracket, usually around the dash board area. The equipment, which operates from a +13.2 volt, is supplied with mounting bracket and plug in microphone. The transceiver provides a nominal 8 watt output. The required frequencies, priority frequencies and scan facilities are normally programmed, to the user’s requirements, during manufacture or by the equipment supplier. If a user wishes to programme the equipment, then disk based programming software and a programming lead can be supplied by PAE. PAE BT6M VHF transmitter emission performance summary: All results taken from report number CTMS 2000/1301a produced by Cambridge Test and Measurement Services * and submitted to the FCC supporting our application for Grant of Equipment Authorisation. Occupied Bandwidth - 47 CFR 2.1049 (1) Occupied Bandwidth Rules Parts 2.1049 and 87.139 Mask showing compliance with 25 kHz channel spacing 0 - 10 - 20 - 30 - 40 - 50 - 60 - 70 - 80 - 90 -100 STOPP ED AT 25dBRB 300Hz# A: POS RLV: 9.1dBmST 5.0sVB 300Hz# CENTER:127.500 0MHz [BAND~] SPAN:150kHz freq TR-A Results in accordance with Part 2.1051 and 87.139 Emission Limits Note: Emissions 20dB below limit are not required to be listed Carrier Frequency (Fc) : 127.5 MHz Absolute LevelLevel (relative to RF Pow er 8W) dB w .r.t limit of 43+10 log pow er FrequencyIdentitydBmdBcRemarks (MHz)limit - 13limit - 52 127.398Spurio us- 35.7- 74.7All others > 127.603Spurio us- 39.2- 78.220 dB within 255.0002fc- 47.5- 86.5Specification 382.500 3fc- 53.7 - 92.7Limit. * FCC Registration Number 93395 Results in accordance w ith Part 2.1053 and 87.139 Emission Limits Notes: 1Emissions 20dB below limit are not required to be listed 2Following a pre-scan below 30MHz, no emissions detected greater than 20dB above specification limits Carrier Frequency (Fc) : 127.5 MHz FrequencyIdentity Absolute Level dBm Level (relative to RF Pow er 8W) dB w .r.t limit of 43+10 log pow er (MHz)limit - 13limit -52 dBcRemarks 176.94Spurio us- 63.2- 102.2All greater than 20dB 255.60Spurio us- 65.0- 104.0within Specification Limit.

Northfields, Market Deeping, Peterborough, PE6 8UE, England. Tel: +44 (0) 1778 345434 Fax: 342877 Sales Fax: 341286 www.parkair.co.uk Registered in England 1951792 An ISO9001 Approved Company A subsidiary of Northrop Grumman Corporation Thursday, 11 July, 2000 Mr. Frank Coperich. Federal Communication Commission Equipment Authorization Division Applications Processing Branch 7435 Oakland Mills Road Columbia MD21046 REF: C8LBT6M 731 Confirmation Number EA97773 Correspondence Reference Number:14973 Dear Mr. Coperich, The mobile radio in question will only be sold in the USA as a 25kHz version. References to 8.33kHz channel spacing apply to our European customers. Consequently, our application was only for the emission designator 6K0A3E as we felt the 8.33kHz requirement would not be required in America. ( The 8.33khz emission designator is 5K0A3E). The following statements were added to the User guide supplied to clarify its use: Notice for the USA: FCC Statement This device complies with Part 15 of the FCC rules. Operation is subject to the condition that this device does not cause harmful interference. This equipment is only licensed for operation on 25kHz-channel spacing. Operation on 8.33 kHz channel spacing is restricted to European customers. This statement appears on page i of the User Guide. All equipment supplied will be pre-programmed with 25kHz channel spacing frequencies. Also , the equipment may only be re-programmed through a link to a PC so the end user / operator cannot change the settings. I hope this negates the requirement for a waiver and allows us to proceed. Best regards, A. Horsfield EMC and Approvals

Front view of mobile with speaker and microphone 180mm approx Top view – internal Bottom view - internal

Proposed Identification label applied to the BT6M rear panel Size: 95mm * 22.5mm Artwork to be printed in black on metalised polyester film, silver finish Label to have self adhesive backing This label is provisional. The XXXX will be replaced by the approval number from the VCA when granted. The FCC ID number may only be used when approved Rear view ID Label position Antenna port

BOARD LAYOUT T6M SERIES MOBILE SERVICE MANUAL – SM/16/1.0Page 9-1 9. Section Index 9.Section Index.....................................................................................................9-1 9.1RFU - Topside...........................................................................................................9-2 9.2RFU – Bottom side.....................................................................................................9-3 9.3SPU –Top Side..........................................................................................................9-4 9.4SPU – Bottom Side....................................................................................................9-5 9.5PA – Top Side............................................................................................................9-6 9.6PA – Bottom Side.......................................................................................................9-7 9.7FPU – Top Side.........................................................................................................9-8 9.8FPU – Bottom Side....................................................................................................9-9 9.9EXP – Top Side.......................................................................................................9-10 9.10EXP – Bottom Side.................................................................................................9-11 BOARD LAYOUT T6M SERIES MOBILE SERVICE MANUAL – SM/16/1.0 Page 9-2 9.1 RFU - Topside PAD1 C 2 1 3 R218 C210 D 1 C 2 1 PL1 D2 C 2 2 9 C40 R 2 1 7 C209 C23 R30 C6 C 7 4 R58 C 7 5 C82 R57 R 5 5 C83 R56 R54 D12 C84 T R 2 C 7 2 R47 C 8 1 R 5 0 R 4 9 R48 R 5 1 R 5 3 L1 L2 C88 C 8 5 TR7 R 6 4 R 6 5 R67 C87 R 5 9 R52 L 1 7 PL4 I C 1 2 C 1 1 3 PL3 C102 C105 R76 R81R79 C212 C 5 0 C 3 5 5 C 2 0 0 T5 C 1 8 1 C 1 4 6 C142 T R 5 T R 6 TR8 R 1 0 4 C42 1 TR3 C 3 0 0 R 3 C18 L9 C 2 5 R 4 C240 C 3 5 4 L15 R 2 2 C 4 3 C36 R19 R16 C37R15 L13 C 2 5 9 R17 C34 C 3 9 C 4 1 R 2 0 3 R 1 8 R 2 1 T R 4 C 2 9 R379 C22 C211 R220 R 2 1 9 C214 L4 R378 R377 TR1 R5 R2 L5 R 2 0 0 C 1 2 PL2 C190 R 2 0 1 C 1 1 C 1 9 2 D7 C191 D9 R197 R198 C8 L29 L32 C208 C 1 6 4 C 1 0 6 C129 C 2 3 1 C58 TCX1 F1 F2 C35 D8 C 1 4 3 C206 C203 I C 1 6 L26 R210 R213 R 3 2 6 1 T1 R85 C73 D4 C 5 4 C 5 5 T2 C 6 2 C 3 3 R 1 0 7 C 6 8 C317 T R 2 5 C 5 9 R240 R 2 4 3 R 3 1 0 L19 1 IC6 R 9 2 C132C121 C119 C120 L 2 2 C 1 3 4 L 2 3 C135 R29 C133 C 1 2 7 C131 R 2 4 6 R202 C20 C76 C 2 5 0 R 1 2 5 R 1 5 5 C 2 5 4 C 2 5 5 C95 R 6 6 C 7 8 C80 C24 R13 D11 D17 D13 C27 IC17 R 8 2 C66 C112 R 1 8 5 R 6 3 TL1 C90 C 9 1 R40 C61 R43 R42 R 4 4 C65 R154 C7 C77 C4 R32 C2 R33 RV1 TR10 C225 I C 3 1 C5 C109 C3 C 5 2 R 3 4 C 1 C 2 8 9 R 3 1 R 3 6 R 3 5 C 5 6 R 3 7 C92 R116R119 T R 1 8 C 1 6 6 R206 C154 C224 C316 C 2 4 6 C28 C38 C9 R1 R10 C44 C53 L12 R14 L11 L36 C 1 5 9 C167 MX1 C16 R229 L18 C 1 0 1 C136 L24 C 1 4 0 L21 C15 C 1 3 9 C 1 3 7 C 1 4 5 C138 L25 L27 C197 C 6 9 IC4 C70 R 4 6 C93 R 4 5 R 1 2 IC14 R 1 5 3 C116 R80 C111 C118 C115 C 1 4 7 C 1 1 4 R 9 C155 1 VCO1A C63 C64 R181 R241 R41 C60 C 5 7 R 6 0 R62 C227 C 3 0 R 1 7 6 R61 D18 R11R126 C 2 2 3 C193 C198 C 1 4 1 L28 C149 C 1 9 6 1 I C 3 2 C204 R215 R216 R161 C199 R207 C202 R209 C201 R 2 0 8 MX5 C153 R328 R 1 0 0 C242 T4 R327 C 4 9 L16 C 8 9 L3T3 C 9 4 R 2 4 R118 R 1 1 7 C 8 6 C152 R 2 5 R88 R108R109 D5 R 1 1 0 R 1 1 1 D3 R94 C150 C 1 7 7 C 1 7 8 C 2 4 4 C 2 2 6 R99 R96 R227 C 3 0 6 MX2 MX3 C 3 5 3 C 2 4 5 C 3 5 0 R 3 0 7 R 1 7 9 C 9 8 C 2 2 2 C 2 2 1 C 2 2 0 R 1 6 7 R 1 7 7 R 1 3 7 R 1 3 8 I C 2 0 C174R139 C 1 7 5 C184 I C 2 3 C185 C241 MX4 R147 R26 C239 T R 1 2 C71 C157 R28 T R 1 5 R121 R149 R27 IC1 C 4 8 C 4 7 R 2 3 C51 L6 R 6 MX6 C 1 7 L10 C 2 6 R 8 C19 C13 C10 C248 C235 R135 R214 R212 T R 1 9 C 2 0 5 R 2 1 1 L31 C 2 2 8 C 2 3 0 C 2 1 5 TP135 L 3 3 R145 D10 C 9 6 D6 R86R87 R234 I C 2 R90R89 C79 C46 C45 R 2 0 C 1 4 C 2 9 0 L40 C 3 1 1 R238R245R342 C312 R97 C207 TP165 INTEK GLOBAL TECHNOLOGIES LTD RFU AIR BAND PCB V2 L001RFUAIRBB0 LAYER 1 ASSEMBLY BOARD LAYOUT T6M SERIES MOBILE SERVICE MANUAL – SM/16/1.0 Page 9-3 9.2 RFU – Bottom side SK1 SK2 R309 R 3 7 5 R 3 0 3 C 3 3 2 C 3 4 9 R 2 7 0 C 2 5 3 TR21 R 2 3 5 C218 R178 C 3 3 3 R306 R 1 5 1 C 2 4 7 R136 C360 I C 2 5 I C 2 7 D15 IC8 R376 R330 R323 R 3 7 4 I C 1 9 R129 R122 R128 R 1 8 4 R 3 9 R 3 0 0 R 1 9 4 R305 R302 C 2 1 6 C163 R189 C 2 5 1 R 2 4 8 R317 R 3 1 6 R78 R 2 4 7 R 2 9 5 R244 C189 R195 C 2 5 2 C362 R 1 5 0 TR22 R338 R 3 3 6 C366 R 1 0 6 C236 C 3 4 3 R298 R313 R159 C 1 2 8 C256 R 1 1 4 C 1 2 3 L7 R 3 0 1 C364 C 1 2 4 C 1 4 8 L38 C365 L30 C 4 1 6 R228 R73 R158 R308 R156 C 2 9 4 R242 R 2 3 0 R 7 4 R 7 5 L 2 0 I C 2 8 C104 R 7 2 R91 C122 C126 C100 C99 IC34 R 2 2 2 R 2 2 5 IC29 R334 R335 R332 I C 1 8 R157 R237 C361 R319 R 7 R 3 2 1 R 3 2 0 R205 R322 D14 R 3 4 0 C 2 3 7 R120 R 1 2 4 I C 2 2 R182 C182 R 8 3 R84 R112 R38 I C 3 IC9 R127 C 2 1 7 R 9 3 R 7 7 R123 R130 C160 C 6 7 C243 R144 TR13 R148 TR14 R 1 4 6 R98 D16 R 2 2 6 R 2 2 1 R 2 2 3 C170 C188 R 7 1 R 6 9 R 6 8 R 7 0 R169 C187 R 1 3 4 R 2 3 1 C 2 3 3 TR20 C234 IC13 C 2 3 2 R 2 3 2 R 3 3 7 R333 I C 3 0 C32 C168 C 1 6 9 R 1 9 9 R 2 0 4 C31 R 2 2 4 R 2 3 3 R180 R131 C 1 5 8 TR16 C238 I C 1 0 C249 R152 L35 R 1 9 2 T R 1 7 R 1 9 1 R 9 5 C130 R 1 9 3 R187 R 1 0 5 R 1 9 0 R186 R196 R 1 8 8 R163 I C 2 1 C 3 2 9 C176 I C 1 5 R339 C415 R 3 4 1 R 3 7 1 R 3 7 3 R314 R 3 1 5 R 3 7 2 C314 R 3 1 2 R 2 9 6 R 2 9 7 R 1 6 2 C 3 3 6 I C 2 6 R304 R 1 6 4 C183 R165 R 1 6 6 IC35 R 1 6 0 C 3 3 5 C 1 0 8 R 2 9 9 C180R170 R172 R171 R173 C186 R175 R174 R380 R 3 8 1 R382 C 1 7 3 R 1 4 0 R143R141 R142 C144 R101 R 1 1 3 R 1 0 2 T R 1 1 C97 C195 R 1 1 5 R 1 0 3 C117 L34 C161 C 1 6 5 R 1 8 3 R 2 6 9 C 3 2 8 C 1 5 6 C 1 7 2 R 1 3 3 C171 R132 I C 2 4 C125 C 3 3 4 C 3 3 7 C179 C 3 3 1 C 2 1 9 C103 1 IC5 C110 TR9 C 1 0 7 R168 INTEK GLOBAL TECHNOLOGIES LTD RFU AIR BAND PCB V2 L001RFUAIRBB0 LAYER 4 ASSEMBLY BOARD LAYOUT T6M SERIES MOBILE SERVICE MANUAL – SM/16/1.0 Page 9-4 9.3 SPU –Top Side MH1MH2 MH5 MH4MH3 C 1 C2 C 3…

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CIRCUIT DESCRIPTION T6M SERIES MOBILE SERVICE MANUAL – SM/16/1.0Page 7-1 7. SECTION INDEX 7.SECTION INDEX.............................................................................................7-1 7.1Front Panel Unit (FPU)..............................................................................7-3 7.1.1Display................................................................................................7-3 7.1.2Indicator LEDs....................................................................................7-3 7.1.3Buttons and Switches.........................................................................7-3 7.1.4Microphone connection.......................................................................7-3 7.2Signal Processing Unit (SPU)....................................................................7-3 7.2.1General...............................................................................................7-3 7.2.2Detailed Circuit Description.................................................................7-4 7.2.3Digital Signal Processor (DSP)...........................................................7-4 7.2.4ASIC...................................................................................................7-4 7.2.5CODEC and Analogue Signals...........................................................7-4 7.2.6Configuration Information....................................................................7-5 7.2.7Serial UART........................................................................................7-5 7.2.8RFU Interface and PA Control............................................................7-5 7.2.9Power Supply......................................................................................7-5 7.2.10Mobile Radio On / Off Switching.........................................................7-5 7.2.11Ignition Sense.....................................................................................7-6 7.2.12Reset Generator.................................................................................7-6 7.2.13Octal Buffer U105...............................................................................7-6 7.2.14PTT Inputs..........................................................................................7-6 7.2.15Confidence Tones...............................................................................7-6 7.2.16Audio PA.............................................................................................7-6 7.2.17Microphone DC Bias...........................................................................7-7 7.2.18Filtering of I / O Connections...............................................................7-7 7.2.19Watchdog Circuit................................................................................7-7 7.3Radio Frequency Unit (RFU).....................................................................7-7 7.3.1General...............................................................................................7-7 7.3.2Receiver RF Amplifier.........................................................................7-7 7.3.3First Mixer...........................................................................................7-8 7.3.4First IF and Second Mixer...................................................................7-8 7.3.5Reference Oscillator...........................................................................7-8 7.3.6TX and RX Local Oscillators, Synth and Offset Loop..........................7-8 7.3.7Cartesian Loop...................................................................................7-9 7.3.8Digital Inputs from SPU.......................................................................7-9 7.4Power Amplifier (PA)................................................................................7-10 CIRCUIT DESCRIPTION Page 7-2 T6M SERIES MOBILE SERVICE MANUAL – SM/16/1.0 7.4.1General..............................................................................................7-10 7.4.2Detailed Circuit Description................................................................7-10 7.5I 2 C Expander Board.................................................................................7-10 Overview and Interconnection Block Diagrams..................................................7-11 7.7Functional Block Diagrams.......................................................................7-11 CIRCUIT DESCRIPTION T6M SERIES MOBILE SERVICE MANUAL – SM/16/1.0Page 7-3 7.1 Front Panel Unit (FPU) 7.1.1 Display The display is of 6 digits (ICs 4 to 9). Each digit (HDSP7801,green) is an individual 7 segment display unit with decimal point. The display units are driven by ICs 2 & 3 (SAA1064), I 2 C compatible LED drivers operating in dynamic mode (C13 & C14) control the multiplex frequency. TRs 1 to 3 are included to allow extra drive current and therefore increased segment brightness, which is ultimately controlled by software. This is not adjustable by the user. 7.1.2 Indicator LEDs Three LEDs are fitted onto the FPU PCB. These are 'PWR' (green), 'BUSY' (yellow) and 'TX' (red). Each LED has two states i.e., on / off, to indicate the status of their respective function. LED brightness is controlled by software. This is not adjustable by the user. 7.1.3 Buttons and Switches Control button and switch presentation is via an illuminated keymat. Keymat illumination and brightness is achieved by red and yellow LEDs with current limiting series resistors. The Buttons are used to select dedicated functions i.e., 'PWR'; 'SCAN'; 'SQUELCH' and 'PRIORITY'. Switches (double-ended 'rocker' type) are used to select user variables i.e., 'VOLUME' up/down, 'CHANNEL' up/down and 'CHANNEL SELECT' up/down. IC1 (PCF8574) provides remote expansion for the two-line serial I 2 C bus, allowing FPU control/status information to be transmitted to the EXP board/SPU via SK1. 7.1.4 Microphone connection The microphone signals are received via a 6 w…

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EQUIPMENT : BT6MTEST REPORT NUMBER: CTMS 2000/1301A FCC Identifier : C8L BT6M CTMS FCC Registration Number: 93385 Page 1 of 32 TEST REPORT ON Park Air VHF AM Transceiver FCC Authorisation Procedures Part 2 subpart J and part 87 TEST REPORT NUMBER CTMS 2000/1301A May 2000 Prepared for: Park Air Electronics Ltd. Bleheim Way, Northfields, Market Deeping, Peterborough, Lincolnshire PE6 8UE The results in this report refer to the tested unit only EQUIPMENT : BT6MTEST REPORT NUMBER: CTMS 2000/1301A FCC Identifier : C8L BT6M CTMS FCC Registration Number: 93385 Page 3 of 32 General Test Information Date Test Sample Received:29 th March 2000 Date Testing Started:3 rd April 2000 Date Testing Finished:7 th April 2000 Equipment Serial Number:#7 CTMS Project Number :2000/1301A Test Engineer:M. Billis Report Copy No 1 EQUIPMENT : BT6MTEST REPORT NUMBER: CTMS 2000/1301A FCC Identifier : C8L BT6M CTMS FCC Registration Number: 93385 Page 4 of 32 TABLE OF CONTENTS PAGE No Part 2.1033Application for Certification5 2.1046RF Power Output at terminals6 2.1047 (a)Modulation Characteristics7 2.1047 (b)Modulation limiting characteristic9 2.1049 (1)Occupied Bandwidth11 2.1051 Spurious emissions at antenna terminals14 2.1053 Field Strength of spurious radiation16 2.1053 (a) (1)Frequency Stability with temperature variation18 2.1053 (d) (1)Frequency Stability with primary voltage variation20 2.1057Frequency spectrum to be investigated22 General Information and Attachments : Company Accreditations & Credentials32 EQUIPMENT : BT6MTEST REPORT NUMBER: CTMS 2000/1301A FCC Identifier : C8L BT6M CTMS FCC Registration Number: 93385 Page 5 of 32 2.1033 Application for Certification For use in accordance with FCC Rules and Regulations 47 CFR parts 2 and parts 87. 2.1033 (c) (1)Name of applicant : Park Air Electronics Ltd. Address of applicant:Bleheim Way, Northfields, Market Deeping, Peterborough, Lincolnshire PE6 8UE Contact:Mr. A. Horsfield 2.1033 (c) (2)FCC Identifier:C8L BT6M Model Type Number:BT6M 2.1033 (c) (3)Installation and operating instructions :User Guide, see exhibit D 2.1033 (c) (4)Type(s) of emission: Amplitude Modulated 6K80A3EJN, 5K00A3EJN 2.1033 (c) (5)Frequency range:118 -136.975 MHz 2.1033 (c) (6)Output power range:8 W 2.1033 (c) (7)Maximum power rating (part 87):8 W 2.1033 (c) (8)dc voltage applied to power amplifier:13.2 V dc current to power amplifier:4.4 A 2.1033 (c) (9)Tune-up procedure for RF power: n/a 2.1033 (c) (10)Schematic and description of circuit/devices for : Stabilizing frequency:see exhibit C & F Suppression of spurious radiation :see exhibit C & F Limiting modulation:see exhibit C & F Limiting Power: see exhibit C & F 2.1033 (c) (11)Photograph of identification plate / label:See exhibit ‘A’ 2.1033 (c) (12)Photographs of equipment:See pages 23 - 32 EQUIPMENT : BT6MTEST REPORT NUMBER: CTMS 2000/1301A FCC Identifier : C8L BT6M CTMS FCC Registration Number: 93385 Page 6 of 32 RF Power Output at terminals - 47 CFR 2.1046 The transmitter is operated under standard test conditions, using the standard test voltage, the transmitter, tuned in accordance with the procedure described in the accompanying documentation, was keyed in an unmodulated condition and the output was connected to a RF Power Meter via an attenuator of normal impedance matching that of the transmitter. The RF Power Output was observed and recorded. The RF Power Output was measured in accordance with the following test configuration, using the test instruments listed. (Calibrated items are indicated in Blue) Test instruments used : RF Power Meter :Hewlett Packard Type HP 435B RF Power Sensor :Hewlett Packard Type HP 8481B Results in accordance with Part 2.1046 and 87.131 Power and emissions TRANSMITTER POWER (Watts) 118.0 MHz 127.5 MHz136.975 MHz 8.50 W8.30 W8.30 W EUT Power Sensor Power Meter EQUIPMENT : BT6MTEST REPORT NUMBER: CTMS …

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