Our HF modem P4dragon DR-7800 is the uncompromising advancement of the legendary PTC-II which is designed for professional deployment and for the ambitious amateur radio operator.


DR-7800 is software-compatible with PTC-II which means that one may continue to use the existing software, such as AirMail, RMS Express, Alpha, etc., for PACTOR as well. Due to the pin compatibility of the radio equipment ports a change-over from the well-tried PTC-II technology to the innovative P4dragon technology is made convenient: re-plug, switch on and enjoy the higher speed and robustness with the PACTOR connectivity!


The elegant design and the excellently readable and informative OLED display including the simple upgrade facility (updates free of charge!) round off the concept of the absolutely latest shortwave modem from the house of SCS.


DR-7800 can be ideally used for HF email, for example, over the Winlink network. Externally, it stands out due to its high-resolution OLED display which, among other things, can be configured for waterfall and spectral views. Thanks to its reliability and low power consumption of 3W, the new modem is also well-suited for distress radio communications and other applications under severe conditions.


Highlights of PACTOR-4:

  • 10500/5500 bps net (PMC/uncompressed)

  • At least twice as fast as PACTOR-3 the same power and bandwidth!

  • Backwards compatible with PACTOR-1/-2/-3

  • 2400 Hz bandwidth

  • Highly adaptive (10 speed levels)

  • High interference immunity (up to -20 dB @ 3 kHz)

  • 6 auto-notches

  • Adaptive equalizer



Please drop us an email at Sales@Woodsidetech.com

SCS PACTOR-4 (P4) DR-7800

    12F Trade and Financial Tower

    Bonifacio Global City, Taguig, 1634 Metro Manila





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    Woodside Technologies