The DR-7800 has been optimized for use with the new high-end data transmission mode PACTOR-4. This offers unexcelled fast and robust data links via shortwave; E-mail almost like at home – from any point on earth. The DR-7800 is software compatible to the PTC-II series so that existing PACTOR software (AirMail, RMS Express, Alpha etc) can continue to be used. The elegant design, and the excellently readable and informative OLED display, as well as the easy upgrade possibilities (free updates!) round up the concept of the most modern short-wave modem from SCS, the creators of PACTOR.

Technical data

• Data throughput: Maximum 5512 bps without compression. Approx 10500 bps with PMC using text. This is reached with approx +16 dB @ 4 khz in an AWGN channel. Under the usual channel conditions 1.5 – 3 times faster than PACTOR-3
• Compatibility: Strictly backward compatible to PACTOR-1/-2/-3. Automatic negotiation during link setup. Noticeably improved reception with PACTOR-2 and PACTOR-3
• ARQ protocol: Synchronized, similar to PACTOR-3, except 10 instead of 6 speed levels (“Waveforms”) and faster switching. Bandwidth always smaller than 2400 Hz.
• Channel equalization: Iterative adaptive equalizer for the coherent speed levels (5 – 10), RAKE receiver with maximum ratio combination for the splayed speed levels (2-4). Real-time multitasking operating system.

DR-7800

• Operating modes: PACTOR-4, PACTOR-3, PACTOR-2, PACTOR-1, weather-FAX (Receive), GPS decoder.

• Processor: Quad core DSP from Freescale, 6400 MIPS, 64 Bit Connections: USB, (Opt.: Bluetooth, Ethernet, USB-master), GPS (RS232 and TTL), 2 x radio AF / PTT (Main, Aux, confi gurable - PTC-II compatible or symmetrical, opt. dual-port operation), 1 x radio-remote control (all usual transceiver types), microphone input, loudspeakeroutput (2W)

• Audio level / imp.: Input: max 5.5 V p-p, 15 kΩ, output: max. 9 V p-p, 300 Ω
• Display: 256 x 64 pixel OLED, blue, high contrast, excellent readability, no viewing

  angle problems, display of spectrum and much more.

• Power supply: 10 – 26 V 400 mA (max at 10 V input)
• Weight / size: 770 g, 172 x 43 x 205 mm (width, height and depth)