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NanoVNA-F V2 50kHz-3GHz IPS 4.3Inch LCD Display Vector Network Analyzer S-A-A-2 Antenna Analyzer Sho E-880 Measurement frequency: 50KHz -3GHz Display: 4.3inch, Resolution 800*480 Battery: 5000mAh Li-ion Battery RF output power: -9dBm (error within 1GHz: ±1dB) Frequency accuracy: <0.5ppm S21 dynamic range: 70dB (1.5GHz), 60dB (3GHz) S11 dynamic range: 50dB (1.5GHz), 40dB (3GHz) 2-port return loss: 20dB typ (1.5GHz), 13dB min (3GHz) Number of calibration points: 101 points Number of scanning points: 101 points Number of traces: 4 Number of mark points: 4 (the mark point bar can be moved up and down on the screen) Setting save: 5 groups (after saving, it can be directly recalled when it is used next time, no need to recalibrate, and the saved parameters before the last shutdown will be automatically recalled when it is turned on next time) Support calibration result interpolation, can measure without recalibration after adjusting the measurement frequency band Scan time: about 1.9s/1 time (50kHz ~ 3000MHz full frequency band)
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CP2112 debug board USB to I2C Communication Module E-879 On-chip power-on reset circuit, on-chip voltage regulator: 3.45 V output Compliant with USB specification 2.0 standard; full speed (12Mbps) USB suspend status via SUSPEND and /SUSPEND pins Integrated 194-byte one-time programmable ROM for storing customizable product information 512-byte SMBus data buffer, configurable clock speed device address 7-bit value is the slave address of CP2112 Windows, Mac, and Linux HID to SMBus libraries API for rapid application development, open-access interface specifications. 8 GPIOs can be configured as input/output and open-drain/push-pull, configurable clock output for external devices 48MHz to 94kHz, switching LEDs during reading/write SMBus
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Dynamo Hand Crank Charger E-874 Maximum Output Voltage: DC5.5V/Maximum Output Current: 600mA/Interface type: USB It is better than a solar charger because you can use it even without the heat of the sun It is great for emergency situations, for trekking, fishing, camping, mountain climbing, and even just for everyday use