"Sal" wrote in :


....

Thanks, Owen,

I understand the world of complex numbers and vector impedance
well enough. My concern is whether I can make the thing work with
what appeared to me to be a dearth of hookup instructions.

How did you know what cable(s) to order? Are you operating with
a software COM port or do/does your computer(s) come with a
hardware COM port?
The AIMuhf connects to the computer by USB, just a mini USB IIRC, and I
think they supplied a cable.

....
As I told Ian, I'll try the software and see if it radiates warmth.
It needn't be hot ... just not ice cold. :-|

The software is a very important element.

In my experience, the software with these kinds of things is
amateurish... but usable.

I also have a TecTec VNA, but I avoid using it if I have something else
that will do the job, and the AIMuhf is usually better if a one port VNA
is up to the task.

You will see plots from both of those in the article
http://www.vk1od.net/antenna/7MDipole/7MDipole02.htm .

There are other ham grade VNAs, I haven't researched them deeply, some
may be kits or homebrew that leave you challenged to find some of the
parts.

Owen