kv4p HT – homebrew VHF radio

kv4p HT is a homebrew VHF radio that makes your phone capable of voice and text communication completely off-grid with at least a Technician class amateur radio license. The radio simply plugs into the USB C port on your Android smartphone and transforms it into a fully-fledged handheld radio transceiver. It’s completely open source (GPL3):…

Frequency Counter DIY Kit Module

Frequency Counter DIY Kit Module An easy to build Open Source DIY kit of Frequency Counter based on PIC16F628A microcontroller. Economy package intended to measure frequency input up to 5MHz. Full extended package includes MB506 prescaler that allows to measure HF and VHF up to 250MHz. Technical specification for Economy Package 5MHz Counter: Low frequency…