Modifications for the Icom IC-746

Picture(s) of Icom - IC-746

19-07-1998 IC-746 out of range TX/RX
11-12-1999 IC-746 Modification (2 Kbytes)
25-10-2000 Extended RX/TX for IC-746 (0 Kbytes)
02-12-2000 Separating the Tx and Rx lines (1 Kbytes)
02-07-2001 Power mod for the IC-746 (0 Kbytes)
20-10-2001 Solutions for chip blowing with mPC (33 Kbytes)
13-01-2002 Monitor Audio Output Too Low (1 Kbytes)
25-01-2002 Schematic for ICOM CI-V Option (16 Kbytes)

IC-746 out of range TX/RX

In IC746DW.JPG you can see the open bottom side from the transceiver and you will see a red marked area, too.


This marked area you can see again and bigger in the picture IC746SMD.JPG.

Now something about IC746SMD.JPG.

There are some green frames. This are diodes which must be on this place.
There are some red frames. This are diodes which you have to remove. Where no frame is, there is no diode in my transceiver.

After removing the red marked diodes you should can
RX 60 khz - 60 MHz and 118 Mhz - 176 MHz
TX 100 khz - 60 MHz and 118 Mhz - 176 MHz