There are TRL calibration and SOLT calibration for the network analyzer calibration. Both calibrations are calibrated by exchanging calibration kits. However, when using the inexpensive connectors soldering to the substrate, the correct calibration cannot be performed due to the dispersion of the connector. This affects the measurement accuracy. In this report, we will show the experimental results that calibrated using the same connector and calibrated using the soldered inexpensive connector to the substrate. From this experiment, we will show that the inexpensive connector is possible to be used for the measurement including the 0.6dB error until 6GHz.