I'm waiting on my H4 to be delivered and one of the reasons
that I went through the trouble of ordering from Hugen (they don't ship to
Serbia,
had to ship it to Germany) was so I could use Kurt characterization files.
FFS
On Sun, 13 Dec 2020 at 03:19, Roger Need via groups.io <sailtamarack=
[email protected]> wrote:
Today I unboxed and tested a new NanoVNA-H4. The first thing I did was
to measure the calibration loads supplied in the box. I tested them with a
DE-5000 LCR meter at DC and 100 kHz. The short was .01 ohm but the "50
ohm" cal load was 50.78 ohms. This is not nearly as close as the "50 ohm"
cal load in my NanoVNA-H which read 49.79 ohms. Both NanoVNAs are genuine
Hugen products. I also noticed that there are physical differences and
finish between the -H and H4 loads. Even the through connector is a
different size.
Kurt Poulsen did a nice job characterizing the 2.8" -H loads and it would
have been nice if the H4 had continued to use the same devices. I guess I
will continue to use the old set which is closer to 50 ohms.
I though I would post this so others know that not all the cal loads are
the same in Hugen's products. A photo of both is attached.
Roger
