I received the 25 dollar unit from Amazon today.
It is the gen111.taobao.com unit. I looked at that web site and it is a Chinese NanoVNA store.
This one defaults to 50KHz to 900 MHz at power-up.
Hans was correct: the open and short calibrators were screwed onto the unit and the 50
ohm calibrator was screwed onto one of the two included cables with a fem-to-fem adaptor.
It's all good. It has a plastic storage case that everything just fits in.
The lcd screen is a little misaligned, not square with the cutout, but not a problem. It is only off by a minor amount
and doesn't affect readability.
I am thoroughly happy with it.
I have to wear my magnifier glasses to read it.
I will probably get the 4.3 inch screen version in the future.
73 de N8MIB, Mike
