Сообщение от
Семен Семеныч
Попробуйте, может поможет инфо которое нашел на западном форуме -
"I had a similar trouble yesterday, while trying to get my 1000D working with HRD. I built a CAT interface with a MAX232 chip (so it is not isolated, I know). Well, what matters here is that my unit received commands but didn't answer back... well, not really. I checked with oscilloscope and there was some very weak answer from rig. I looked by Google for similar problems and found a note about CAT SERIAL OUT signal needing an EXTERNAL PULL DOWN resistor of 1k5 Ohm to GND. So I put it (from PIN2 to PIN1 in the DIN5 connector) and then everything worked fine"
Если коротко перевести, то добавление резистора 1,5 к между ножками 2 и 1 разъема на трансивере - решает эту проблему. Хотя со штатным интерфейсом FIF-232С у меня работает и без этого резистора.