Only non-inductive resistors are needed around the GHz, which must be soldered to the connector and cut off excess feet. The calibration on the images is appropriate for the shortwave. Calibrations made in China are tools that can be used for example ebay sellers are likely to have fallen out of quality control, so sell for that and that.
The measuring point should always be the same as the calibration point.
Gyula, HA3HZ
Gyula Molnar