You are here: Home News P4dragon DR-7800 SCS is setting the new Standard for radio data communication.
Always current
Worldwide SCS Dealer Network

More than eighty percent of our products are sold and used outside Germany. A dense worldwide dealer network is available to our customers.

Worldwide PACTOR Service Providers

Click to the graphic to choose your PACTOR Service Provider.


SCS is setting the new Standard for radio data communication.

Our brand new HF-modem P4dragon DR-7800 is the no compromise further development of the legendary PTC-II, which was designed for professional use and for the ambitioned amateur radio enthusiast.

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.


Switch plugs and go…

Due to the plug compatibility of the radio ports, a change from the tried and tested PTC-II technology to the innovative P4dragon technology is very easy. Change over the plugs, turn on, and enjoy PACTOR-4!

To the limit

DR-7800 means “High end” in both hard and software. 6.4 Billion arithmetical operations per second, and hand optimized DSP algorithms, enable an unexcelled PACTOR performance. Reference class!



The new Ouroboros–Logo is not only a symbol for globe encircling HFcommunication. It also symbolizes the many iterative operations, without which PACTOR-4 could not approach so close to the Shannon boundary.


Max net speed 10500 bps. 2 x faster than P3. Backwards compatible. 2400 Hz bandwidth. Highly adaptive. Highly resistant to interference. 6 auto notches. Adaptive equalizer.

Visit the PACTOR-4 Website

Document Actions
Log in

Forgot your password? New user?
Always current
View all news items
Apr 18, 2015
P4dragon Firmware Version 2.1 with Robust Packet Radio
P4dragon Firmware Version 2.1 with Robust Packet Radio

Apr 17, 2015
Mounting Brackets
Mounting Brackets

Easy mounting of your modem.

Nov 06, 2014
New Tracker / DSP TNC
New Tracker / DSP TNC

Shortwave APRS and much more in an even better package

Mar 12, 2014
SCSmail 2.0
SCSmail 2.0

Operate your own flexible and powerful e-mail system using long-range radio technology.

Oct 30, 2013
P4dragon Firmware Version 2.0 with Packet Radio
P4dragon Firmware Version 2.0 with Packet Radio