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User manual Kenwood, model TH-D7E

Manafacture: Kenwood
File size: 2.41 mb
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Language of manual:en
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manual abstract


. This transceiver is incapable of functioning as a digipeater. . “ ” indicates packets to be transmitted still remain in the buffer. TH-D7E Only: When using the VHF band to transmit packets, do not select the narrow transmit deviation {page 51}. Data library Mail box Bulletin board 52 CONNECTING WITH A PERSONAL COMPUTER CONNECTING WITH A PERSONAL COMPUTER Note: Turn OFF the transceiver power before making the connection. .oNniPemaNniPtDNGeDXTwDXRDB-9 connector2.5 mm (1/10") 3-conductor plug 1 To RXD on PC 2 To TXD on PC 3 To GND on PC TXD1 GND3 RXD2 To PC jack To COM port PG-4W Note: When the built-in TNC is ON, some internal frequency relationships may induce an internal heterodyne and cause the squelch to be opened unexpectedly. Shifting the interference will solve this problem. Press[TNC]+ POWER ON to access “BEAT SHIFT”. Press [UP]/[DWN]to select “UPPER”. Press[OK]to complete the setting. The default is “NORMAL”. OPERATING TNC This transceiver has a built-in TNC which conforms to the AX.25 protocol. This protocol is used for communications between TNCs. The TNC accepts data from your personal computer and assembles it into packets. It then converts packets to audio tones which the transceiver can transmit. The TNC also takes audio tones from the transceiver, converts them to data for the computer, and checks for errors in the data. The TNC mainly functions in Command or Converse mode. First learn the difference between these two modes. • Command mode When you select Packet mode, the TNC enters this mode. A “cmd:” prompt appears on the computer screen. You can type commands from the computer keyboard to change the settings on the TNC. When in Converse mode, press [Ctrl]+[C] on the keyboard to restore the Command mode. • Converse mode The TNC enters this mode when a linkage with the target station is established. On the computer keyboard, type an appropriate command and if necessary a message, then press [Enter] or [Return]. What you type is converted into packets and transmitted over the air. When in Command mode, type CONVERSE to restore the Converse mode; you can also type CONV or K instead. For the commands supported by the built-in TNC, see “TNC COMMANDS LIST” on page 99. 53 PREPARATION FLOW PREPARATION FLOW Note: You may switch Battery Saver OFF {page 49} to prevent the initial portion of a received packet from being missed. q Install an appropriate communications program on the personal computer. • A variety of freeware or shareware programs can be obtained in various ways. Consult your reference material or other “packeteers”. wInitiate the communications program and set the following parameters on the personal computer: • Transfer rate (TNC <–> Computer): 9600 bps • Data length: 8 bit • Stop bit: 1 bit • Parity: Non • Flow control: Xon/Xoff eAccess Menu 1–4–1 to select band A or B as the data band {page 55}. rPress [TNC] to switch ON the TNC. •“ ” appears. tPress [TNC] again to enter Packet mode. • “PACKET” also appears. y To select 9600 bps as the transfer rate from/to the target station, type HBAUD (or HB) 9600 and press [Enter] or [Return]. The default is 1200 bps. • You must select the same transfer rate as the target station. u Type MYCALL (or MY) then your call sign (9 digits max.) and press [Enter] or [Return] to set your call sign on the TNC. • You cannot use the default setting (NOCALL). iTune to an appropriate frequency. • First you may want to monitor packets which are transmitted among other stations. When packets are received, text appears and the computer screen scrolls. oTo connect with the target station, type CONNECT (or C) then its call sign and press [Enter] or [Return]. • When a linkage is established, a message which informs you of it appears on the computer screen; on the transceiver display, “ ” appears. • If packets from other stations keep your squelch open, adjust the squelch level in advance. The TNC cannot transmit in such a situation. !0Send appropriate commands and, if necessary, messages to the target station via the TNC. 54 SELECTING DATA BAND SELECTING DATA BAND ” indicates the current data band; the default is band A. Access Menu 1–4–1 (DATA BAND) and select band A or B. You can also select the method for inhibiting the built-in TNC from transmitting. Access Menu 1–4–2 (DCD SENSE) and select one of the two methods. D BAND ONLY: The TNC does not transmit when signals are present on the data band. BOTH BANDS: The TNC does not transmit when signals are present on the data band or another band. FULL DUPLEX This transceiver is also capable of simultaneously transmitting and receiving signals. So, it is possible to transmit audio on the current band while receiving packet data on another band (data band). Press [DUP] to enter Full Duplex mode. • “DUP” appears. STSTA CONCON PACKETACKET9696BCON 975 To exit Full Duplex mode, press [DUP] again. Note: . You cannot use the Full Duplex function after recalling the VHF band on band B or blanking one band. . When using the Ful...

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Two-Way Radio - TH-D7A (2.41 mb)

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