Gain vs Coverage Shape

Higher-gain omnis flatten the radiation pattern: more reach toward the horizon, less coverage directly above and below. Use 3 to 6 dBi in hilly or urban areas, 8 to 10 dBi on flat open land.

Connectors

Most dev boards use SMA or tiny U.FL/IPEX connectors. Some gateways use RP-SMA, and outdoor antennas use rugged N connectors. Mismatched genders simply won’t connect.

Cable Loss

Thin coax loses signal over long runs at 915 MHz. Keep cables short, or use thicker low-loss coax for long runs to a mast.

Tuning

An antenna tuned for 915 MHz (low SWR) matters more than raw gain. Mistuned stock antennas are a common cause of poor range.

Outdoor Safety

Mast-mounted antennas should be grounded with a lightning arrestor and weatherproofed connectors. Follow local electrical codes.

This waterproof 5.8 dBi fiberglass antenna (902 to 928 MHz) comes with a 20 ft extension cable and is marketed for Heltec V3/V4 and LILYGO Meshtastic boards, making it a complete kit to get a node’s antenna onto a roof. It averages about 4.1 stars from 200+ ratings. On long runs, thin cable loses some signal; mount the radio closer if you can.

A tall 35.4-inch, 10 dBi fiberglass antenna with an N-female connector, bundled with a 16.5 ft RP-SMA cable and an SMA adapter so it fits most gateways and nodes. High gain suits flat, open rural terrain. It averages about 4.3 stars from 258 ratings. Check EIRP limits and reduce transmit power if needed.

eifagur positions this 8 dBi fiberglass omni for suburban gateways, a sensible middle ground between broad coverage and reach. It averages about 4.1 stars from 135 ratings.

A 5.8 dBi omni bundled with a 10 ft cable, which is ideal for lifting an indoor gateway’s antenna to a window, attic or balcony without a full mast install. It averages about 4.4 stars from 62 ratings.

Bingfu argues that a 4 dBi antenna can outperform 5.8 or 8 dBi models in urban areas, where nearby devices sit above and below the antenna, and that matches how low-gain omnis behave. It includes a 10 ft cable and averages about 4.3 stars from 156 ratings.

A waterproof 5.8 dBi fiberglass antenna with an N-male connector, sized for solar repeaters and outdoor Meshtastic enclosures. It averages about 4.7 stars from 48 ratings.

A slim outdoor omni with an N-male connector designed for Meshtastic 915 MHz solar and fixed nodes, providing 360-degree coverage. It averages about 4.4 stars from 80 ratings.

MakerHawk’s 17 cm soft whip is a popular Meshtastic upgrade with 220+ ratings averaging about 4.5 stars. Users report it outperforms stock antennas, but treat the “10 dBi” claim skeptically; real gain for a whip this size is far lower. Buy it for the tuning and fit.

The Gizont whip has the highest average rating of the whips here, about 4.7 stars from 153 ratings. It’s another lightweight 17 cm SMA upgrade; the same caution about the advertised gain applies.

The same well-tuned muzi works whip as our top pick, in a 4-pack for upgrading a family or group’s Meshtastic nodes at once. It averages about 4.7 stars from 44 ratings.

Stick this magnetic-base antenna on a car roof or trunk to get the antenna outside the metal cabin, a large improvement for mobile Meshtastic nodes. It includes an IPEX extension cable and averages about 4.5 stars from 85 ratings.

Many LoRa modules and boards (ESP32 LoRa, CubeCell, RAK) have a tiny U.FL/IPEX socket. This 4-pack includes U.FL to SMA pigtails and matching antennas so you can mount an SMA connector on your enclosure. It averages about 4.2 stars from 77 ratings.

Any mast-mounted antenna should run through a grounded lightning arrestor. This N-type unit covers 0 to 6 GHz, so it works at 915 MHz, and averages about 4.7 stars from 244 ratings. It only protects if it’s properly bonded to a good ground.

Handheld Meshtastic node

muzi works whip (or the 4-pack).

Rooftop gateway, mixed terrain

ALFA AOA-915-5ACM plus a lightning arrestor.

Flat farmland

SIGNALPLUS 10 dBi or eifagur 8 dBi.

City apartment

Bingfu 4 dBi or eifagur 5.8 dBi in a window.

Car or truck

Magnetic base antenna.

Solar repeater

5.8 dBi solar node antenna (N-male).

What’s the difference between SMA and RP-SMA?

Both have the same threads, but the center pin is swapped. SMA male has a pin; RP-SMA male has a socket. Most LoRa dev boards use SMA female jacks, so you need an SMA male antenna. Check before buying, or use an adapter.

Is higher gain always better?

No. Gain reshapes coverage rather than creating power. High-gain omnis push energy toward the horizon and away from nearby nodes above or below. In hilly or urban areas, 3 to 6 dBi often performs better.

Can I use a 915 MHz antenna on an 868 MHz device?

It will work somewhat, but a mismatched antenna reduces efficiency. For best results, buy an antenna tuned to your device’s band.

How long can my antenna cable be?

As short as practical. Thin coax like RG58 or RG174 loses noticeable signal over long runs at 915 MHz. For long runs, use thicker low-loss coax, or put the radio near the antenna and run power or Ethernet instead.

Is it legal to use a high-gain antenna?

Rules cap effective radiated power (EIRP), which includes antenna gain. With a high-gain antenna, you may need to lower the radio’s transmit power to stay within limits. Check your country’s regulations.