Bringing A Yagi Antenna to 915MHz LoRa
If youâre a regular reader of Hackaday, you may have noticed a certain fondness for Meshtastic devices, and the LoRa protocol more generally. LoRa is a great, low-power radio communications standards, but sometimes the antennas you get with the modules can leave you wanting more. Thatâs why [Chris Prioli] at the Gloucester County Amateur Radio Club in the great state of New Jersey have got a Yagi antenna for North Americaâs 915 MHz LoRa band.
Right out the gate, their article links to one of ours, where [tastes_the_code] builds a Yagi antenna for the European 868 MHz LoRa. Like [tastes_the_code], the radio club found [Chris]âs antenna gives much better reception than what came with the LoRa module. Looking out their window, instead of two Metastatic nodes with a stock antenna, one club member is now connecting to two hundred.
A simulation of the radiation pattern. Looks like a Yagi, alright.
Now, the Yagi is directional, so you only get that boost pointed down the axis of the antenna, but at least in simulation they estimate a 7.7 dB front-to-back gain vs under 3 dB for an omnidirectional antenna. Not bad, for a simple 3D print and some stiff wire!
If you donât want to re-invent the wheel again, check out the GCARCâs GitHub for files if youâre in North America. If youâre in Europe, check out [taste_the_code]âs build from last year. Of course whatever band youâre operating in, Yagi isnât your only roll-your-own option for a LoRa antenna.
hackaday.com/2025/12/31/bringiâŠ