Lower Power Supply Noise, Smaller Noise When Using Harmonics; Built-In 400mah Battery, Micro-Sd Supports Up To 32gb, And Only Supports Spi Mode. Add A Micro-Sd Card To Save Test Data; This Is A Diy Product That Provides As Complete A Vector Network Measurement Function As Possible In A Credit Card Size. Contains A 2.8-Inch Touch Screen, 400mah Battery, Tx/Rx Mode Measurement, And Can Measure Complete S11 And S21 Parameters. If You Need To Obtain S12 And S22, You Need To Manually Change The Transceiver Port Wiring. Add Support; Modify The Port Names To Port1 And Port2 1. Measurement Frequency: 50KHz ~ 1.5GHz 2. Rf Output: -13dbm (Maximum -9dbm) 3. Frequency Accuracy: Less than 2ppm 4. Frequency Stability: Less than 0.5ppm 5. Measurement Range: Measurement Range: 70db (50khz-300 Mhz), (50db (300m-900mhz), 40db (900m-1500mhz)); 6. Port Swr: Less than 1.1 7. Display: 2.8-Inch Tft (320x240) 8. Usb Interface: Usb Type-C Communication Mode: Cdc (Serial) 9. Power Supply: Usb 5V 120mA, Built-In 400mAh Battery, Maximum Charging Current 1a, Can Be Used Continuously For More Than 4 Hours 10. Number Of Calibration Points: 101 (Fixed) 11. Number Of Scanning Points: 101 (Fixed) 12. Display Traces: 4, Markers: 4, Settings Saved: 5 color: Black Material: ABS Package Contents: 1 x Host (Including 2.8-Inch Touch Screen, 400mAh Battery) 2 x 20cm SMA Male To Male RG174 RF Cable 1 x Type-C To Type-C Cable 1 x USB Type-C Data Cable 1 x Touch Pen 1 x Pick 1 x SMA Simple Calibration Kit Load 1 x SMA Simple Calibration Kit OPEN 1 x SMA Simple Calibration Kit SHORT 1 x SMA Female To Female Connector Note: Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Will Not Affect The Use Only the above package content, other products are not included. Note: Light reflection 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.