Sound amplifier DCW 2004 B

audioswitchinglinear

The Bias-T incl. Sequencer, DCW 2004 B, allows a comfortable remote coupling of our MHP - R and SUPER - AMP preamplifiers via the coaxial cable as well as for delayed switching of HF-linear amplifiers. The sequential operation of the DCW 2004 B avoids reliably damage to the preamlifier that may be caused by HF-spikes during switching. It offers 3 switching outputs in total, which have ascending delay times. So not only linear amplifiers but other devices, like transverters, can be switched on with defined times. The DCW 2004 B is designed for the amplifiers MHP - R and SP series. The PTT switching input of the DCW 2004 B accepts a circuit against ground or against + 5 ... 12 V. The preamlifier and a linear amplifier (if used) can be switched on or off as required. The HF-section of the DCW 2004 B offers a very low inseration loss and a high shielding factor. The PTT control of the transceiver must take place in analogue operating modes (SSB, CW FM) from connection 6 of the DCW 2004 B sequencer. You must then control the PTT with a foot switch. Or you have to cut the PTT line on the microphone. When using the WSJT-X program, the PTT output socket of the transceiver must be connected to connection 3 of the DCW 2004 B sequencer. Set the TX delay to 0.5 sec in the program under Settings → Advanced!