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That is not correct.?Both AA and CH are 2 port capable.?However, due to the larger font, only two traces were used on AA.?



On Sat, 26 Oct 2019 at 12:33 PM, W5DXP<w5dxp@...> wrote: > From: subs@...: However, what is the difference between the _AA_version and the non-_AA_ version?

The AA version is a single-port (CH0) version, i.e. Antenna Analyzer. The CH version is a dual-port version - CH adds CH1, i.e. Vector Network Analyzer. Presumably anything without an AA or CH ID is a dual-port VNA version.