Upgraded version: This vector network analyzer adds battery circuit management and is . You can connect the redesigned PCB to the phone with a C-type C cable (original PCB requires OTG cable) and see the clear high-definition image on the phone. A practical and simple control application is designed on the computer. You can download the touchstone(SNP) file of the radio design and simulation software. In addition, a shell protection shell is added to prevent dust. Improve high accuracy: HF VHF UHF antenna analyzer measurement increases the housing, protection and dust. The metal shield is designed to reduce external interference and improve measurement accuracy The improved frequency algorithm can use si5351's odd harmonic expander to support up to 1.5 GHz. The 50K-300MHz frequency range directly output by Si5351 provides 70dB dynamics, the extended 300M-900MHz frequency band provides 60dB dynamics, and the 900M-1.5GHz frequency band provides 40dB dynamics. Mini portable: The upgraded provides perfect vector network measurement function, compact and hand-held, independently with a 2.8-inch LCD display, portable battery-powered or USB-powered. It can work continuously for 2 hours. If additional working time is required, it can be connected to a mobile power supply or power supply. Material:Metal + plastic colour:Black Package Contents: 1 x host 2 x 20cm SMA male to male RG174 RF cables 2 x SMA female-to-female connectors 1 x SMA simple calibration kit short 1 x SMA simple calibration kit 1 x SMA simple calibration kit load 1 x USB Type-C data cable 1 x Type-c to Type-c cable 1 x touchpad Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.