PACTOR II FEC

General Information

Pactor-II-FEC mode is a proprietary standard developed by SCS GmbH & Co. KG, Hanau, Germany. 
It is an advancement of the Pactor-I-FEC mode.

Usage:

§ Broadcast data transmissions (plain-text and encrypted) over HF.

Mode Details

 

Item

Value

Standard

Modulation

DQPSK

 

Number of channels

2

 

Channel spacing (Hz)

200

 

Bandwidth (Hz)

450

 

Symbol rate (Bd)

200

 

Coding

Convolutional FEC code,
Viterbi code

Demodulator Settings

Demodulator

Pactor II

Features

Demodulation

yes

 

Recognition

yes

 

Decoding

yes

 

Automatic Polarity Adjustment

yes

 

Combination with other modems (modem list)

yes

Tuning

The tuning frequency is the center of the signal

Table 162: PACTOR II FEC

Figure 56: PACTOR II FEC Spectrogram