Jane's Military Communications
see at: UK, Surveillance and signal analysis pag. 573
Code30 data analysis and decoding equipment
Code30 offers military, government and PTT monitoring installations the ability to enhance operators' search and monitor operations in the HF radio spectrum from 9 kHz to 30 MHz. The equipment can be used to anaiyse and decode a range of digital HF signals, includine OOK, FSK, FEK, MFSK, MFEK, PSK, 2DPSK, 4DPSK, OQPSK and QPSK.
Signals are presentated on different screens showing, for example, frequency against amplitude, frequency against time, phasor/vector scope, and phase against time. Various different bit anaiysis screens ere also availabie with fully bit- synchronised demodulation. lf the intercepted signal requires further post- processing, raw digital bit streams can be demodulated using a fully bit- synchronised demodulator and stored on magnetic media or output as ASCII data.
The Code30 unit itself consists of a totally screened, IBM PC-compatibie AT-ISA bus interface card which is installed into the customer's PC installation. The interface requires three BNC coaxíai connections for audio signals, two inputs (for optional diversity operation) and one output.
Code30 can be deployed to complement existing or new HF radio monitoring stations. Fully screened against EMI and RFI emission, it will not compromise TEMPEST installations or degrade existing low-noise system performance. As well as the supply of Code30 as an addition to an existing PC installation, turnkey systems can be supplied consisting of an RF screened processor, VDU and keyboard in 483 mm rack size.
Code30's use of digital signal procession and FFT algorithms on all spectrum anaiysis screens is designed to facilitate immediate reaction to fast operator, tuning. More detailed FFT and autocorrelation analysis can be made on emissions of interest enabling experienced operators to 'fingerprint' particular stations.
Status Manufactured in Netherlands by Hoka Electronik NL since the earliy 1990s. In use worldwide in 1994. Recent customers have been the UK MoD, the Pakistani military and the Turkish government.