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Powered by a\u00a0quad-core ARM v8 @ 1.8 GHz<\/strong>\u00a0running\u00a0real-time Linux<\/strong>, the DR-9400 processes signals precisely and with low latency. A\u00a01-ppm TCXO<\/strong>\u00a0ensures excellent frequency stability;\u00a010 bi-color status LEDs<\/strong>, a\u00a0power switch<\/strong>, and a\u00a0reset button<\/strong>\u00a0simplify operation in the shack and in the field.<\/p>\n Applications<\/strong><\/p>\n Data over HF\/VHF:<\/strong>\u00a0Connection-oriented links for messages, small files, and telemetry\u2014robust even under challenging conditions (PACTOR-1\/-2\/-3\/-4<\/strong>).<\/p>\n<\/li>\n Packet Radio:<\/strong>\u00a01k2 AFSK<\/strong>\u00a0and\u00a09k6 G3RUH<\/strong>\u00a0for classic packet networks, plus\u00a0Robust Packet Radio (RPR)<\/strong>\u00a0for greater range and reliability.<\/p>\n<\/li>\n APRS:<\/strong>\u00a0Automatic beaconing for position and status reports.<\/p>\n<\/li>\n Signal reception & analysis:<\/strong>\u00a0Weather-fax (RX)<\/strong>,\u00a0RTTY (RX)<\/strong>, and\u00a0PACTOR Monitor<\/strong>\u00a0for monitoring and analysis.<\/p>\n<\/li>\n<\/ul>\n Highlights<\/strong><\/p>\n Wide mode coverage:<\/strong>\u00a0PACTOR-1\/-2\/-3\/-4<\/strong>,\u00a0Packet Radio (1k2 AFSK \/ 9k6 G3RUH)<\/strong>,\u00a0Robust Packet Radio (RPR)<\/strong>,\u00a0APRS beaconing<\/strong>,\u00a0weather-fax (RX)<\/strong>,\u00a0RTTY (RX)<\/strong>,\u00a0PACTOR Monitor<\/strong>.<\/p>\n<\/li>\n Flexible interfaces:<\/strong>\u00a0USB-C<\/strong>\u00a0and\u00a0LAN<\/strong>\u00a0as standard;\u00a0Wi-Fi\/Bluetooth optional<\/strong>\u00a0via USB dongle (license required).<\/p>\n<\/li>\n Generous audio ranges:<\/strong>\u00a0Input impedance 44 k\u03a9<\/strong>, input level\u00a030 mV\u20136.6 V p-p<\/strong>;\u00a0output impedance 1 k\u03a9<\/strong>, output level\u00a030 mV\u20135.0 V p-p<\/strong>\u2014compatible with many transceivers.<\/p>\n<\/li>\n GPS integration:<\/strong>\u00a0Galvanically isolated, balanced GPS input (TTL\u00a03.3\/5 V<\/strong>\u00a0and\u00a0V.28\/RS-232<\/strong>),\u00a0NMEA decoder<\/strong>, switchable signal polarity; USB GPS (\u201cGPS mouse\u201d) supported.<\/p>\n<\/li>\n<\/ul>\n Technical Data (excerpt)<\/strong><\/p>\n Modes:<\/strong>\u00a0PACTOR-1\/-2\/-3\/-4<\/strong>,\u00a0PACTOR Monitor<\/strong>,\u00a0Packet Radio (9k6 G3RUH \/ 1k2 AFSK)<\/strong>,\u00a0Robust Packet Radio (RPR)<\/strong>,\u00a0APRS beaconing<\/strong>,\u00a0weather-fax (RX)<\/strong>,\u00a0RTTY (RX)<\/strong>.<\/p>\n<\/li>\n Processor & OS:<\/strong>\u00a0ARM v8 quad-core @ 1.8 GHz; Buildroot Linux (real-time).<\/p>\n<\/li>\n Storage:<\/strong>\u00a0SD card (permanent).<\/p>\n<\/li>\n Interfaces:<\/strong>\u00a0USB-C, LAN;\u00a0Wi-Fi\/Bluetooth optional<\/strong>\u00a0(USB dongle + license).<\/p>\n<\/li>\n GPS interface:<\/strong>\u00a0Galvanically isolated; TTL (3.3\/5 V) & V.28\/RS-232; NMEA decoder; software-switchable polarity; USB GPS supported.<\/p>\n<\/li>\n Transceiver audio:<\/strong>\u00a0Input impedance 44 k\u03a9<\/strong>,\u00a030 mV\u20136.6 V p-p<\/strong>;\u00a0output impedance 1 k\u03a9<\/strong>,\u00a030 mV\u20135.0 V p-p<\/strong>.<\/p>\n<\/li>\n Timebase:<\/strong>\u00a0TCXO<\/strong>, accuracy\u00a01 ppm<\/strong>.<\/p>\n<\/li>\n![\"\"](\"https:\/\/www.cqdx.ru\/ham\/wp-content\/uploads\/2025\/10\/Screenshot-2025-10-17-101730-800x245.jpg\")
The\u00a0SCS\u00a0PXdragon DR-9400\u00a0is a modern, high-performance PACTOR modem for reliable data links in amateur radio. It supports\u00a0PACTOR-1\/-2\/-3\/-4<\/strong>,\u00a0Packet Radio (1k2 AFSK \/ 9k6 G3RUH)<\/strong>\u00a0as well as\u00a0Robust Packet Radio (RPR)<\/strong>, and adds useful receive modes such as\u00a0weather-fax (RX)<\/strong>\u00a0and\u00a0RTTY (RX)<\/strong>. It is suitable for both fixed and portable stations where stable, efficient data transfer over HF or VHF is required.<\/p>\n\n
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