Vance Vagell

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Svetlin Nikolov

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Sahilpreet Singh Virdi

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Description

kv4p HT v1.7b

UPDATE Jan 25, 2025:

This design is now obsolete. Please use v1.8 instead which has far better transmit power and receive sensitivity, and fits more ESP32 dev boards! Find it here:

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): 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.

See https://kv4p.com for instructions, open source code, and more information!

Code

kv4p HT on GitHub

https://github.com/VanceVagell/kv4p-ht

CAD-Custom parts and enclosures

https://www.thingiverse.com/thing:6782580

Download Gerbers Download BOM(Bill of materials)

Sep 26,2024

19,287 views

kv4p HT v1.7b

2 Layers PCB 34 x 98 mm FR-4, 1.6 mm, 1, HASL with lead, Green Solder Mask, White silkscreen

Turn your Android phone into a modern ham radio transceiver

19287

39

28

9.31 (4)

Published: Sep 26,2024

Download Gerber file 348

BOM(Bill of materials)

Centroid file

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File Last Updated: 2024/11/26 (GMT+8)

File update record

2024-11-2609:40:37

CAD or technical drawing file is updated.

2024-10-2622:49:33

Centroid file is updated.

2024-10-2622:49:33

Parts List (BOM) is updated.

2024-10-2622:49:32

Gerber file is updated.

2024-10-2410:36:28

Centroid file is updated.

2024-10-2410:36:28

Parts List (BOM) is updated.

2024-10-2410:36:28

Gerber file is updated.

2024-10-1813:39:21

CAD or technical drawing file is updated.

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Topic

ham radio amateur radio android radio 7th Design Contest-Electronic Project

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