kv4p HT v1.8C KIT 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): the Android app, ESP32 firmware, PCB designs, and 3D printer files. It's small enough to fit in your pocket and take anywhere, and since it has no internal battery it's the perfect emergency radio to put in a go-bag or your car's glove compartment. Note: Please contact customer service if you need to obtain instructions, open source code and more information. Note: This is a DIY kit, you need to assemble and solder it yourself. Color: Black Material: PCB+Plastic+Metal Package Contents: 1 X KV4P-HT v1.8C PCB 1 X KV4P-HT v1.8C DIY Electronic Component Pack(ESP32-WROOM-32-30PIN X1,SA818S VHF X1,SMA X1,R0805 1MΩ X2,0603 36pF X4,0402 20pF X4,L1608 62nHX3,L1608 68nHX2) 1 X 3D PRINTED CASE FOR KV4P HT v1.8C 1 X VHF SMA ANTENNA 1 X Sticky gel pads 1 X 50CM Cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.