TH-D72A/E - N3UJJ
TH-D72A/E - N3UJJ TH-D72A/E - N3UJJ
1 DEVELOPMENT CONCEPT1.2 Evolving DevelopmentNext, we turned our sights to applied functions of GPS.Incorporating an internal GPS unit to support the collected positional information in APRSapplications is our minimum standard, and it is also very important to provide customers with appliedfunctions to enhance the convenience of the product.Following are some examples of applied functions available with the internal GPS unit.• GPS Logger Function:It features the GPS logger function to log the tracking data. The maximum of 5,000 points seemrather modest compared with a full-fledged GPS logger, but the GPS logger function on theTH-D72A/E allows setting of the interval of records in the log according to the usage environmentand therefore is very useful. A user can choose from (1) the programmed interval duration, (2) theprogrammed travel distance and (3) the timing of transmitting an APRS beacon.The recorded movement trajectory data (log) can be exported to a PC with the MCP-4A,dedicated memory control program for TH-D72A/E, installed and be saved in several file formatsincluding KML that is compatible with Google Earth.• GPS Only mode:A new mode is now added that disables all the features of the transceiver and allows only the GPSlogger to function. If you intend to only record the movement trajectory, using the mode results ina substantial reduction in battery power consumption.• Mark Waypoint and Target Point functions:While you are on a trip, a maximum of 100 points that you want to store can be stored. Therecorded points can be used as a destination (a Target Point) for navigating while verifying thedistance and azimuth until the destination.• Time adjustment function:The current time data received from a GPS satellite can be used to manually or automatically setthe clock built in the transceiver.• Display of GPS satellite information:This is a familiar function of a typical GPS receiver. The location and signal strength of eachsatellite can be viewed on the LCD screen.2 CONTENTS TH-D72A/EFrom The N3UJJ.COM Document Library
1 DEVELOPMENT CONCEPT1.3 Other New FunctionsIn addition to the functions related to the internal GPS unit, the transceiver has more new features.Following are some major functions worth to be presented.• USB interface:RS-232C has been the most common interface to connect a transceiver and a PC; however, inrecent years only few PCs are equipped with an RS-232C connector. TH-D72A/E is equipped witha Mini-B USB connector. The USB connector allows you to directly connect to a computer byusing the supplied USB cable.• Connecting weather stations:The weather stations from Peet Bros. Company, Incorporated and Davis Instruments Corporationcan be connected. The acquired weather information can be displayed on the screen ortransmitted in APRS format.• Digipeaters (Digital Repeaters):Packet signals can be relayed. The transceiver can serve as a temporary relay station when youare on a trip or on other occasions. TH-D72 is the first handheld transceiver that has this function.• APRS LOCK:This is a function to lock the settings of the data band during the operation of APRS to prevent thetransceiver configuration from being changed accidentally. For example, locking the frequency ofthe data band, locking the [PTT] switch, and locking the TNC so that it could not be disabledwithout realizing it, are all possible as a user prefers.• Cross tone:Any combination with Tone, CTCSS or DCS can be used. For example, you can use DCS fortransmission and CTCSS for reception.• Automatic cursor advancement:While entering characters of a menu name or an APRS message with the numerical keypad, uponelapse of a specified period of time after one character is entered, the cursor automatically movesto the next digit. For example, assume you need to enter “AB” (both “A” and “B” must be enteredwith the same [2] key). Upon lapse of a programmed duration of time (e.g. 1 second) after youenter “A”, the cursor moves to the next digit automatically, and you don’t have to advance itmanually so as to simplify and enhance the key operation.• Adjusting wait times:Lengths of wait times that were fixed on the previous models now can be adjusted by a user. Forexample, you can set the illumination timer, the delay time until resuming Time-Operated Scan orCarrier-Operated Scan after a pause and the duration of an interrupted display upon receipt ofAPRS data.• Weather channel scan (USA/Canada only)A total of 10 weather channels can be scanned. It is possible to search for adjacent weatherchannels with the strongest signal. Also, the scan can automatically be done with a programmedinterval and it is most effective during the operation by a mobile or portable station.In addition to the above, the TH-D72A/E has more applied functions, and we hope your actual use ofthe transceiver presents excellence!TH-D72A/E CONTENTS 3From The N3UJJ.COM Document Library
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- Page 3 and 4: About Registered Trademark• Windo
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- Page 7 and 8: PROLOGUEAmateurs Building the New G
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- Page 37 and 38: “Time, Altitude, Travel direction
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1 DEVELOPMENT CONCEPT1.3 Other New FunctionsIn addition to the functions related to the internal GPS unit, the transceiver has more new features.Following are some major functions worth to be presented.• USB interface:RS-232C has been the most common interface to connect a transceiver and a PC; however, inrecent years only few PCs are equipped with an RS-232C connector. <strong>TH</strong>-<strong>D72A</strong>/E is equipped witha Mini-B USB connector. The USB connector allows you to directly connect to a computer byusing the supplied USB cable.• Connecting weather stations:The weather stations from Peet Bros. Company, Incorporated and Davis Instruments Corporationcan be connected. The acquired weather information can be displayed on the screen ortransmitted in APRS format.• Digipeaters (Digital Repeaters):Packet signals can be relayed. The transceiver can serve as a temporary relay station when youare on a trip or on other occasions. <strong>TH</strong>-D72 is the first handheld transceiver that has this function.• APRS LOCK:This is a function to lock the settings of the data band during the operation of APRS to prevent thetransceiver configuration from being changed accidentally. For example, locking the frequency ofthe data band, locking the [PTT] switch, and locking the TNC so that it could not be disabledwithout realizing it, are all possible as a user prefers.• Cross tone:Any combination with Tone, CTCSS or DCS can be used. For example, you can use DCS fortransmission and CTCSS for reception.• Automatic cursor advancement:While entering characters of a menu name or an APRS message with the numerical keypad, uponelapse of a specified period of time after one character is entered, the cursor automatically movesto the next digit. For example, assume you need to enter “AB” (both “A” and “B” must be enteredwith the same [2] key). Upon lapse of a programmed duration of time (e.g. 1 second) after youenter “A”, the cursor moves to the next digit automatically, and you don’t have to advance itmanually so as to simplify and enhance the key operation.• Adjusting wait times:Lengths of wait times that were fixed on the previous models now can be adjusted by a user. Forexample, you can set the illumination timer, the delay time until resuming Time-Operated Scan orCarrier-Operated Scan after a pause and the duration of an interrupted display upon receipt ofAPRS data.• Weather channel scan (USA/Canada only)A total of 10 weather channels can be scanned. It is possible to search for adjacent weatherchannels with the strongest signal. Also, the scan can automatically be done with a programmedinterval and it is most effective during the operation by a mobile or portable station.In addition to the above, the <strong>TH</strong>-<strong>D72A</strong>/E has more applied functions, and we hope your actual use ofthe transceiver presents excellence!<strong>TH</strong>-<strong>D72A</strong>/E CONTENTS 3From The <strong>N3UJJ</strong>.COM Document Library