Kenwood TM?D710 Overview Manual

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Kenwood TM?D710 Overview Manual Manual pdf 1 page image

www.raadapt.com 4/18/2013 1 of 14RAADAPT GPS Module Interface for the Kenwood®TM‐D710 Amateur Radio TransceiverOverview:Thank you for choosing the RAADAPT GPS Module Interface for your Kenwood TM‐D710® transceiver.I’d like to preface by stating that there are a multitude of options to interface a GPS toyour transceiver. The options and parts selected for this kit were chosen for availabilityof components, ease of build and keeping the overall cost of the unit affordable.The GPS module used is the GlobalSAT EM406A ®. It features a SiRF star III chip set witha high sensitivity built in patch antenna. The EM406A has an extremely fast TTFF andoutputs NMEA 0183 data protocol at 4800 bps.The serial output of the EM406A is TTL 0V~2.85V. The TM‐D710 transceiver requires RS‐232 serial level. The 1st phase of the circuit (R1, R2, R3, R4, R5, T1 & Q1) boosts the GPSTX serial voltage from 2.85V to 5V. The second phase of the circuit (R6, R7, R8, R9, R10,T2, Q2, C1 & D1) shifts the serial level from TTL to RS‐232. (Re. Fig. 1)Parts List:PCB Printed circuit board D 1 x 5 position right angleheaderU1 L7805 5V regulator E 1 x 2.5mm right angle plugU2 6 pin SMD GPS connector F 1 x 2.5mm jackT1, T2 2N3904 NPN transistors G 1 x RJ45 Punch down jackQ1, Q2 2N3906 PNP transistors H 1 x GPS housing (case)D1 1N4148 diode J 1 x GPS CapC1 10uF capacitor K 1 x GPS Housing CoverR1, R3, R5 100K OHM resistor(BRN‐BLK‐YEL)L 1 x Release LeverR2 470 OHM resistor(YEL‐VIO‐BRN)M 1 x Release Lever CapR4, R6, R7,R8, R9, R1010K OHM resistor(BRN‐BLK‐ORG)N EM406A GPS module w/ 6 pinjumper cableA 1 x serial cable assembly P 3 pin trouble shooting header(Not shown)B 1 x power cable assemblyC 1 x RJ45 (8P8C) rightangle plug / cable