[Node]

Well, I'm glad my tool helps. But as I see it if this tool helps, then ICOM + switch adapter should work equally well. This tool is for interfaces other than ICOM because ISTA does not query them about voltage. Earlier ISTA versions like 4.01 seemed to have better support for some other "strange" interfaces, but 4.03 seems to have that code removed (I may be wrong, because I haven't analysed 4.01 much) and ICOM remains the only interface which is fully supported for voltage readings.