PortaPack H4M · Mayhem External KhanfarRX App
Why the open web links it
Demonstrates KhanfarRX, a tool that enhances HF band listening on the HackRF PortaPack H4M with features like band plans and band locking.
Linked by 2 independent sites, 1 of them widely read in the 2026-10 crawl of the open web, including rtl-sdr.com, web.app.