The DXZone.com Amateur Radio Internet Guide

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NanoVNA-H4 Vector Network Analyzer

Posted:
https://www.dxzone.com/nanovna-h4-ve...twork-analyzer

NanoVNA-H4 Vector Network Analyzer - 10KHz-1.5GHz HF VHF UHF Antenna
Analyzer with 4-inch LCD touchscreen,portable with 1950mAh battery

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VSPE - Free Serial Port

Posted:
https://www.dxzone.com/dx34340/vspe-...rial-port.html

Software/Virtual Serial Port
Virtual Serial Ports Emulator for Windows. Virtual Serial Ports Emulator
tool (and VSPE API) is free on 32 bit platform and can be used with no
charge for any purpose. No registration or activation key is required.