User manual KENWOOD TH-D7A

[. . . ] INSTRUCTION MANUAL 144/440 MHz FM DUAL BANDER TH-D7A TH-D7E 144/430 MHz FM DUAL BANDER STA CON 5 7 PACKET96BCONDUP 9 KENWOOD CORPORATION © B62-1004-00 (K, E) (A) 09 08 07 06 05 04 03 02 01 00 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. [. . . ] x This transceiver is incapable of functioning as a digipeater. 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. 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. 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. 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. 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. 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. TXD1 GND3 1 2 3 w To RXD on PC To TXD on PC To GND on PC 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". The default is "NORMAL". For the commands supported by the built-in TNC, see "TNC COMMANDS LIST" on page 99. 53 PREPARATION FLOW 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 The following steps should guide you to a good start of packet operation. [. . . ] 20 Reset Full . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Partial (VFO) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Reverse Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Scan Call/Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ]