Hi Torsten
I have the same combo (Sunsdr2DX and Expert 1.5K-FA). You may want to consider using CAT data instead of BCD (Band data) for your amp to follow radio. That way you not only set the proper band but also proper ATU segment on that given band while you tune around.
If you have SDC you can easily accomplish this with the "PA" function via Virtual Com port which in turn will connect your computer to the amp by using USB to Com port cable.
You can still PTT key the amp from your radio by using the cable you have. This combo has been working reliably for me.
Perhaps you can also accomplish CAT via RigSync but I am not sure how to do it.
73 Nick, VE3EY
DL9GTB пишет:
I use the firmware version Rel.31_07_18_C/15s for my 1.3k. I can only select band data in the CAT menu "YAESU", as Yuri described earlier.
I can measure the voltage at the pins of the connection cable, which also matches the band data checkmarks of the software exactly. However, the voltage is only 0.58 volts. I measured the pins against the ground of the connector. It seems very low to me, I would have expected about 5 volts. Is it possible that I am not getting enough voltage from the pins of the Ext CTRL socket? Who can help and measure the voltage at the pins of the cable connector? That would help me a lot.
73 de Torsten - DL9GTB