DATA OPERATION
The TR270 FM Transceiver has been designed for superior
performance with 1200 and 9600 BAUD Packet Radio
data rates in addition to its quality FM voice operation.
The optional TNC270 is a single, plug-in Terminal Node
Controller module for the TR270 which contains both
1200 and 9600 BAUD modems. The module also con-
tains on-board, battery backed static RAM for Mailbox
messages. When installed, it offers a turn-key packet
station for both terrestrial and satellite modes of opera-
tion. In addition to the hardware, the TNC270 is supplied
with two software packages:
PC PAKRATT
for MSDOS
TM
,
and
PC PAKRATT
for Microsoft Windows
TM
. These pro-
grams are designed to fully exploit the entire TNC270
command set under either operating system.
The features include:
- AX.25 Level 1 & 2, 1200/9600 BAUD Packet
operation in Command, Host, and KISS modes
- 18 KB Mailbox
- Node operation
- Hardware state machine for “true DCD” open
squelch operation
- Hardware HDLC controller guarantees accurate
protocol conversion at 9600 BAUD
- Modem disconnect header for installing other
modems
- Separate 1200/9600 BAUD transmit level controls
- Enhanced MHEARD function identifies TCP/IP, NET/
ROM, and <THE-NET> stations
- Expert command included to ease the learning
process - only the most common commands will be
used until the EXPERT mode is enabled.
- Independent Operation: once installed and
configured, the TNC270 will independently accept
connects, receive and forward mail, and act as a
node while the TR270 remains powered on.
Please refer to the Installation/Operating manual
provided with the TNC270 for complete installation and
operating instructions.
- Book for Windows
TM
software.
(The DOS software is explained in a Read Me file on the
supplied diskette).
FAX OPERATION
The optional DEMOD270 Multimode Demodulator, when
installed in the TR270 FM TRansceiver, allows both AM
and FM demodulation of various data transmissions. The
DEMOD270 is user installable and includes a complete
suite of PC based software. The features are as follows:
1) Decodes the following data transmissions in the FM
mode:
- HF radio facsimile
- Morse Code
- RTTY (Radio Teletype)
- FEC/NAVTEX
- ACARS (Aircraft Communications and Reporting
System)
2) Decodes the following data transmissions in the AM
mode:
- NOAA APT Weather Satellite
- GOES WEFAX (If used with an external 1691 MHz to
137.5 MHz converter)
Please refer to the Installation/Operating Manual that is
included with the DEMOD270 for complete installation
and operating instructions.
- Book for FAX software.
- Book for ACARS software.
Data Operation / Fax Operation 41