EUGDR-235TVHF Scanning Receiver

DR-235 㨀㨀 Manual NOTICE This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communi- cations. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be deter- mined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: • Reorient or relocate the receiving antenna. • Increase the separation between the equipment and receiver. • Connect the equipment into an outlet on a circuit different from that to which the receiver is con- nected. • Consult the dealer or an experienced radio/TV technician for help. Tested to Comply With FCC Standards FOR HOME OR OFFICE USE Information in this document is subject to change without notice or obligation. All brand names and trademarks are the property of their respective owners. Alinco cannot be liable for pictorial or typo- graphical inaccuracies. Some parts, options and/or accessories are unavailable in certain areas. Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. Copyright @ 2000 All rights reserved. No part of this document may be reproduced, copied, translated or transcribed in any form or by any means without the prior written permission of Alinco. Inc., Osaka, Japan. English Edition Printed in Japan. 5522''%%++((++%%##66++110055 &46 عع))GGPPGGTTCCNN (TGSWGPE[EQXGTCIG㨪/*\ 4: 㨪/*\ 6: 1RGTCVKPIOQFG-(' 9KFGOQFG -(' 0CTTQYOQFG (TGSWGPE[TGUQNWVKQP㧘㧘㧘㧘㧘㧘㧘㧘 0WODGTQHOGOQT[EJCPPGNU #PVGPPCKORGFCPEGǡWPDCNCPEGF 2QYGTTGSWKTGOGPV8&%r VQ8 )TQWPFOGVJQF0GICVKXGITQWPF 4GEGKXG# /CZ ޓޓ# 5SWGNEJGF %WTTGPVFTCKP 6TCPUOKV# 1RGTCVKPIVGORGTCVWTG͠VQ͠ (TGSWGPE[UVCDKNKV[rRRO &KOGPUKQPU Y ˜ J ˜ F OO ˜˜OOHQTRTQLGEVKQPKPENWFGF 9GKIJV#RRTQZMI عع66TTCCPPUUOOKKVVVVGGTT 1WVRWVRQYGT*KIJ9 /KF9.QY9 /QFWNCVKQPU[UVGO8CTKCDNGTGCEVCPEGHTGSWGPE[OQFWNCVKQP /CZKOWOHTGSWGPE[FGXKCVKQPrM*\ 9KFGOQFG rM*\ 0CTTQYOQFG 5RWTKQWUGOKUUKQPF$ #FLCEGPVEJCPPGNRQYGTF$ 0QKUGCPFJWOTCVKQF$ 9KFGOQFG F$ 0CTTQYOQFG /KETQRJQPGKORGFCPEGMǡ عع44GGEEGGKKXXGGTT 5GPUKVKXKV[F$WHQTF$5+0#& 4GEGKXGTEKTEWKVT[&QWDNGEQPXGTUKQPUWRGTJGVGTQF[PG +PVGTOGFKCVGHTGSWGPE[ UV /*\ PF M*\ 5SWGNEJUGPUKVKXKV[F$W #FLCEGPVEJCPPGNUGNGEVKXKV[F$ 9KFGOQFG F$ 0CTTQYOQFG +PVGTOQFWTCVKQPTGLGEVKQPTCVKQ F$ 5RWTKQWUCPFKOCIGTGLGEVKQPTCVKQ F$ #WFKQQWVRWVRQYGT9 ǡ6*&   00QQVVGG##NNNNUURRGGEEKKHHKKEECCVVKKQQPPUUCCTTGGUUWWDDLLGGEEVVVVQQEEJJCCPPIIGGYYKKVVJJQQWWVVPPQQVVKKEEGGQQTTQQDDNNKKIICCVVKKQQPP CIRCUIT DESCRIPTION ޓޓ DR-235 1) Receiver System The receiver system is a double superheterodyne system with a 30.85 MHz first IF and a 455 kHz second IF. 1. Front End The received signal at any frequency in the 216.000MHz to 279.995MHz range is passed through the low- pass filter (L116, L115, L114, L113, C204, C203, C202, C216 and C215) and tuning circuit (L105, L104 and D105, D104), and amplified by the RF amplifier (Q107). The signal from Q107 is then passed through the tuning circuit (L103, L107, L102, and varicaps D103, D107 and D102) and converted into 30.85 MHz by the mixer (Q106). The tuning circuit, which consists of L105, L104, varicaps D105 and D104, L103, L107, L102, varicaps D103, D107 and D102, is controlled by the tracking voltage form the VCO. The local signal from the VCO is passed through the buffer (Q112), and supplied to the source of the mixer (Q106). The radio uses the lower side of the superheterodyne system. 2. IF Circuit The mixer mixes the received signal with the local signal to obtain the sum of and difference between them. The crystal filter (XF102, XF101) selects 30.85 MHz frequency from the results and eliminates the signals of the unwanted frequencies. The first IF amplifier (Q105) then amplifies the signal of the selected frequency. 3. Demodulator Circuit After the signal is amplified by the first IF amplifier (Q105), it is input to pin 24 of the demodulator IC (IC108). The second local signal of 30.395 MHz , which is oscillated by the internal oscillation circuit in IC108 and crystal (X104), is input through pin 1 of IC108. Then, these two signals are mixed by the internal mixer in IC108 and the result is converted into the second IF signal with a frequency of 455 kHz. The second IF signal is output from pin 3 of IC108 to the ceramic filter (FL101 or FL102), where the unwanted frequency band of that signal is eliminated, and the resulting signal is sent back to the IC108 through pins 5. The second IF signal input via pin 5 is demodulated by the internal limiter amplifier and quadrature detection circuit in IC108, and output as an audio signal through pin 12. 4. Audio Circuit The audio signal from pin 12 of IC108 is amplified by the audio amplifier (IC104:A),and switched by the signal switch IC (IC111) and then input it to the de-emphasis circuit. and is compensated to the audio frequency characteristics in the de-emphasis circuit (R203, R207, R213, R209, C191, C218, C217) and amplified by the AF amplifier (IC104:D). The signal is then input to volume (VR1) . The adjusted signal is sent to the audio power amplifier (IC117) through pin 1 to drive the speaker. 5. Squelch Circuit The detected output which is outputted from the pin 12 of I…

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Engineering and Testing for EMC and Safety Compliance 360 Herndon Parkway, Suite 1400 Herndon, VA 20170 Phone: 703-689-0368; Fax: 703-689-2056; Metro: 703-471-6441 May 7, 2002 Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 To Whom It May Concern: The following information is to be held confidential pursuant of 47 CFR Part 0 §0.457 and Section 552(b)(4) of the Freedom of Information Act, because the information provided contains trade secrets and proprietary. If made public, the information might be used to the disadvantage of the applicant in the market place. • Schematics • Product Description • Block Diagram • Bill of Materials (Parts List) • Internal Pictures Best Regards, Melissa Carter [email protected] Rhein Tech Laboratories, Inc.

COMPANY NAME: ALINCO, INC. EUT: DR-235T WORK ORDER NUMBER: 2000437 FCC ID: EUG DR-235T Scanning Receiver Certification Report Page 54 of 52

COMPANY NAME: ALINCO, INC. EUT: DR-235T WORK ORDER NUMBER: 2000437 FCC ID: EUG DR-235T Scanning Receiver Certification Report Page 25 of 52 Front View of EUT Rear View of EUT COMPANY NAME: ALINCO, INC. EUT: DR-235T W ORK ORDER NUMBER: 2000437 FCC ID: EUG DR-235T Scanning Receiver Certification Report Page 26 of 52 Left Side Of EUT COMPANY NAME: ALINCO, INC. EUT: DR-235T W ORK ORDER NUMBER: 2000437 FCC ID: EUG DR-235T Scanning Receiver Certification Report Page 27 of 52 Right Side Of EUT COMPANY NAME: ALINCO, INC. EUT: DR-235T WORK ORDER NUMBER: 2000437 FCC ID: EUG DR-235T Scanning Receiver Certification Report Page 28 of 52 Top Of EUT Bottom Of EUT COMPANY NAME: ALINCO, INC. EUT: DR-235T W ORK ORDER NUMBER: 2000437 FCC ID: EUG DR-235T Scanning Receiver Certification Report Front View of Microphone Back View of Microphone COMPANY NAME: ALINCO, INC. EUT: DR-235T W ORK ORDER NUMBER: 2000437 FCC ID: EUG DR-235T Scanning Receiver Certification Report Front of Microphone Back of Microphone

COMPANY NAME: ALINCO, INC. EUT: DR-235T WORK ORDER NUMBER: 2000437 FCC ID: EUG DR-235T Scanning Receiver Certification Report Page 19 of 52 APPENDIX A: LABEL INFORMATION COMPANY NAME: ALINCO, INC. EUT: DR-235T WORK ORDER NUMBER: 2000437 FCC ID: EUG DR-235T Scanning Receiver Certification Report Page 20 of 52 FIGURE 1: FCC ID FIGURE 2: LOCATION OF LABELS ON EUT Alinco, Inc. DR-235T Industry Canada: XXXXX FCC ID: EUGDR-235T This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: 1) This device may not cause harmful interference, and 2) this device must accept any interference received, including interference that may cause undesired operation. WARNING: Modification of this device to receive cellular radio-telephone service signals is prohibited under FCC rules and federal law.

Engineering and Testing for EMC and Safety Compliance 360 Herndon Parkway, Suite 1400 Herndon, VA 20170 Phone: 703-689-0368; Fax: 703-689-2056; Metro: 703-471-6441  APPLICATION FOR FCC CLASS B CERTIFICATION SCANNING RECEIVER Alinco, Inc. 438 Amapola Ave. Suite 130 Torrance, CA 90501 MODEL: DR-235T FCC ID: EUG DR-235T November 14, 2000 REPORT PREPARED BY: EMI Technician: E. Szrajer Administrative Writer: E. Szrajer Rhein Tech Laboratories, Inc. Document Number: 2000437 No part of this report may be reproduced without the full written approval of Rhein Tech Laboratories, Inc. This report concerns (check one): Original Grant: X Class II Change: Equipment Type: Scanning Receiver Deferred grant requested per 47 CFR 0.457 (d) (1) (ii)? Yes: No: X If yes, defer until: Date Company name agrees to notify the Commission by: (date) of the intended date of announcement of the product so that the grant can be issued on that date. Transition Rules Request per 15.37? Yes: No: X If no, assumed Part 15, subpart B for unintentional radiators - the new 47 CFR [10-1-90 Edition] provision.. COMPANY NAME: ALINCO, INC. EUT: DR-235T WORK ORDER NUMBER: 2000437 FCC ID: EUG DR-235T Scanning Receiver Certification Report Page 3 of 52 TABLE OF CONTENTS 1.0 GENERAL INFORMATION.............................................................................................................................4 1.1 STANDARDS REFERENCED..................................................................................................................................4 1.2 BASIC INFORMATION ON THE EUT.....................................................................................................................4 1.3 MODIFICATIONS....................................................................................................................................................5 1.4 RELATED SUBMITTAL(S)/GRANT(S)...................................................................................................................5 1.5 TEST METHODOLOGY...........................................................................................................................................5 1.6 TEST FACILITY......................................................................................................................................................5 2.0 SYSTEM TEST CONFIGURATION..............................................................................................................6 2.1 JUSTIFICATION......................................................................................................................................................6 2.2 EXERCISING THE EUT..........................................................................................................................................6 2.3 TEST SYSTEM DETAILS........................................................................................................................................6 2.4 TEST SYSTEM CONFIGURATION PHOTOGRAPHS..............................................................................................7 2.5 EMISSIONS EQUIPMENT LIST...............................................................................................................................8 2.6 RADIATED TEST METHODOLOGY........................................................................................................................9 3.0 CONDUCTED EMISSION DATA................................................................................................................10 TABLE 1: Conducted Emissions: (216 MHz).......................................................................................................10 TABLE 2: Conducted Emissions: (248 MHz).......................................................................................................11 TABLE 3: Conducted Emissions: (279.995 MHz)...............................................................................................12 4.0 RADIATED EMISSION DATA.....................................................................................................................13 TABLE 4: Radiated Emissions: (216 MHz)..........................................................................................................13 TABLE 5: Radiated Emissions: (248 MHz)..........................................................................................................13 TABLE 6: Radiated Emissions: (279.995 MHz)...................................................................................................14 4.1 38dB Rejection Test.....................................................................................................................................15 4.1 38DB REJECTION TEST....................................................................................................................................15 5.0 CONFORMANCE STATEMENT.................................................................................................................18 APPENDIX LISTING APPENDIX A: LABEL INFORMATION....................................................................................................................19 APPENDIX B: PRODUCT DESCRIPTION.............................................................................................................21 APPENDIX C: SCHEMATICS....................................................................................................................................22 APPENDIX D: BLOCK DIAGRAM OF DJ-196T....................................................................................................23 APPENDIX E: EXTERNAL PHOTOS......................................................................................................................24 APPENDIX F: INTERNAL PHOTOS........................................................................................................................29 APPENDIX G…

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COMPANY NAME: ALINCO, INC. EUT: DR-235T WORK ORDER NUMBER: 2000437 FCC ID: EUG DR-235T Scanning Receiver Certification Report Page 48 of 52 Conducted Configuration Photographs COMPANY NAME: ALINCO, INC. EUT: DR-235T WORK ORDER NUMBER: 2000437 FCC ID: EUG DR-235T Scanning Receiver Certification Report Page 49 of 52 Radiated Configuration Photographs COMPANY NAME: ALINCO, INC. EUT: DR-235T WORK ORDER NUMBER: 2000437 FCC ID: EUG DR-235T Scanning Receiver Certification Report Page 50 of 52 38dB Rejection Configuration Photograph