User manual KENWOOD TH-D7E

[. . . ] INSTRUCTION MANUAL 144/440 MHz FM DUAL BANDER TH-D7A TH-D7E 144/430 MHz FM DUAL BANDER STA ST CON 5 7 PACKET96BCON ACKET96 BCONDUP 9 KENWOOD CORPORATION © B62-1004-20 (K, E) (A) 09 08 07 06 05 04 03 02 THANK YOU! We are grateful you decided to purchase this KENWOOD FM Dual Bander. KENWOOD always provides Amateur Radio products which surprise and excite serious hobbyists. This time KENWOOD presents a handheld with a built-in TNC to make data communications much more convenient than before. KENWOOD believes that this product will satisfy your requests on both voice and data communications. FEATURES This transceiver has the following main features. [. . . ] Access Menu 1­5­7 (144Tx NARROW) and select "ON". 21 22 23 51 PACKET OPERATION 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 Packet is a unit of data transmitted as a whole from one computer to another on a network. Packets can be transmitted on radio waves as well as on communications lines. Besides a transceiver and a computer, all you need is a terminal node controller (TNC). A TNC converts packets to audio tones and vice versa as one of its tasks. A variety of packet applications developed by hams include packet bulletin board systems (PBBSs). PBBSs are created and maintained by volunteers called a System Operator (SysOp). You may access one of your local PBBSs to send e-mail, download a file, or obtain various useful information. Thousands of PBBSs, which have formed a worldwide network, relay e-mail to its intended destination around the world. First find out the call signs and frequencies used by your local PBBSs. Reference material for starting packet operation should be available at any store that handles Amateur Radio equipment. Note: x Not all functions available via conventional TNCs are supported by the TNC built in this transceiver. x Packet operation, easily affected by transmit and receive conditions, requires a full-scale S-meter reading for reliable communication. When the S-meter reads less than maximum during 9600 bps operation, communication errors are frequent. x" " indicates packets to be transmitted still remain in the buffer. select the narrow transmit deviation {page 51}. PBBS Mail box Bulletin board Data library 23 TH-D7E Only: When using the VHF band to transmit packets, do not 52 CONNECTING WITH A PERSONAL COMPUTER You can use an optional PG-4W cable to connect the transceiver with a personal computer. For this cable, contact your authorized KENWOOD dealer. Note: Turn OFF the transceiver power before making the connection. OPERATING TNC This transceiver has a built-in TNC which conforms to the AX. 25 protocol. 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. First learn the difference between these two modes. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 To PC jack PG-4W To COM port · Command mode When you select Packet mode, the TNC enters this mode. 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. 2. 5 mm (1/10") 3-conductor plug RXD2 DB-9 connector Pin No. t e Pin Name GND TXD RXD · Converse mode The TNC enters this mode when a linkage with the target station is established. [. . . ] Call2 to call9 are call signs of stations to be call9) digipeated through. 0 ~ 159 characters 0 ~ 250 ON/ OFF ON/ OFF ON/ OFF ON/ OFF Specifies the content of a message to be included in GPS data. Specifies the interval for displaying a message determined by LTEXT on the screen; a message appears like a received beacon packet. When ON, causes the TNC to monitor other stations while in connection with the target station. [. . . ]