
Ba1258B_RemoteRig_MkIIs-A33.docx
Microbit 2.0 AB 2010. All rights reserved
Radio settings (example)
(*) Available only in RRC-1258MkIIs.
Connections
All necessary signals between the panel and the radio are connected with the 8 wires in the
cable OPC-581 or OPC-587 from ICOM. We just need to cut it apart and connect a RRC-
1258MkII in each end. The following signals are represented in the cable, (the numbering is
for the RJ45 connector to the RRC after converting the cable, not for the ICOM connector):
1 8V power to control panel (only when radio is ON)
2 LRXD - serial data 19200 bps from panel to radio
3 AF - audio to speaker.
4 PWK - power control, grounding it switch on the radio
5 MICE - mic ground
6 MIC- mic Signal
7 GND
8 LTXD - serial data 19200 bps from radio to panel
Cut the ICOM cable (OPC-581 or OPC-587) and connect both ends to a standard CAT-5 patch
cable for computer networks, use shrinking tubes to protect the soldering. One problem is
that the ICOM cable is very soft and there is more sewing tread than copper wire. The copper
wire is also varnished to make it even more difficult. Before you connect the cables to the
RRC:s, please check the cables by connecting them together with a 2xRJ45 connector. Also
pay attention to that a speaker or headset must be connected to the speaker jack on the IC-
706 front-panel otherwise the no audio will be sent from the microphone to the radio.
Comentários a estes Manuais