Today we’re taking a hands-on look at two hackable shortwave radios — the SI4732 V2 and V3.
Both radios feature AM, FM, SSB, CB, and HF coverage, but the V3 adds upgrades like a high-Z antenna port, better headphone amp, and a fully injection-molded case.
We’ll compare antenna options, walk through the menus, demo reception on HF & FM broadcast, test FT8 & SSTV signals, and then open both radios up to see what’s inside — including the ESP32-based controller and how it enables Wi-Fi control and custom firmware.
If you’re into portable radio listening, SDR hacking, ESP32 projects, or low-cost HF toys, this is a fun one.
👉 v2: https://geni.us/SvTDD
👉 v3: https://geni.us/6MZMBO
👉 Toolkit: https://geni.us/OilK
👉 Web Control Firmware: https://atsmini.com/
👉 Waterfall Firmware: https://www-hjberndt-de.translate.goog/dvb/pocketSI4735DualCoreDecoder.html?_x_tr_sch=http&_x_tr_sl=de&_x_tr_tl=en&_x_tr_hl=en-US&fbclid=IwdGRzaANuCeZleHRuA2FlbQIxMAABHsBKVkhGBYdgPV3jRQ4MeAk2S9BROU52I546BFJS6C7BFYGNd2vXvdbnVNLc_aem_jlSHjNjtaQZ3Lg1mIu5TZg
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