915MHz LoRa Antenna Indoor 3dBi Gain Omni SMA Male + IPX Cable 2 Pcs

It is no secret that the stubby antennas included with Heltec V3's are not particularly effective for getting good range. I was looking for an antenna upgrade for my two units and decided to give this pair a shot based on other positive reviews. I can confirm that these work great and for the price are a good bang for your buck to upgrade the performance of V3's. With the stock stubby antennas, I could receive messages inside my house but attempting to send messages out to the mesh would always fail. I have not had any message failures since swapping over to these antennas.

I purchased this for a project for a school play prop using 2 RP2040 micro-controllers (Adafruit Feather RP2040 LoRa RFM95) , 1 for the prop and 1 for a remote. The receiving prop is a clock so originally I incorporated the antenna on the back, but I found that I could still easily send signals from the stage to the tech booth of the theater with only the connector cable attached to the clock (not the actual antenna) but with the full cable+antenna connected to the remote control. The distance is maybe 200ft so I'm extremely satisfied with the results.The build quality on these antenna seem excellent. Would purchase again if needed.

I’ve been using these 915MHz LoRa antennas for Meshtastic, and they’ve proven to be well-tuned for the 915MHz frequency used in the US. The signal-to-noise ratio (SNR) readings I get with these antennas are nearly identical to those from a known 2.5dBi antenna, so while they are advertised as 3dBi, I suspect the gain is closer to 2.5dBi.The hardware included is of decent quality, and the antennas perform best when used straight rather than bent at a 90-degree angle. For example, I have a PORTDUINO node set to CLIENT_MUTE on my desk in my basement office, and it consistently connects with nodes up to 3 miles away.These antennas are reliable, well-built, and a good choice for anyone working with Meshtastic in the 915MHz range. Despite the questionable gain rating, their performance and build quality make them a worthwhile purchase for DIY LoRa projects.

Good product Exceptional price.

These are the best alternative to the basic stubby antenna that comes with most LORA devices. Decent SWR readings negative SNR bd and RSSI dBm but about 50% better than the stubby.

There is no greater bang for your buck to upgrade a LoRa Meshtastic Device.*** NOTE PLEASE SHUT OFF YOUR DEVICE BEFORE INSTALLING ****** DEVICE POWERED ON WITH OUT ANTENNA WILL COOK YOUR DEVICE ***The stock antenna on my LilyGo T-Echo was 7.87:1 SWR and 24.84 ohms resistance. I was barely able to pick up nodes on the device - even in optimal high ground locations.When I upgraded to the Tenmory 3dbi antenna I gained SIGNIFICANT IMPROVEMENTS! The Tenmory 3dbi in a Straight - Vertical configuration is a 1.28:1 SWR and 40 ohms. Very close to an almost perfect antenna and fairly wide bandwidth across 900MHz to 930MHz. See pics.When I tested it in the 90° bent Vertical position it saw a degradation of performance. 2.9:1 SWR and 125 ohms. Still better than stock but I wouldn’t run it that way. Keep it straight.You can see the joint where it bends in the photo. I keep it in that position as a stress / strain relief when I put the device in a pocket. That way the joint bends before the unit breaks.Very well made. Great engineering. Easy to install if you power your device off. Fantastic results. Hitting some devices at 50+ miles direct.

I'll be brief since it's the same as other reviews. Also checking with simple VNA tool.They're good improvements for 915 MHz LoRa. Often the default channel for LoRa is 906 MHz and many of these are right at 906. Good for me.But I've had one antenna far below this - at or below the Europe LoRA ~860 MHz. Bad quality control.(I've also had one antenna directly at 915 - but I call that good as well - so I say I am 5 good out of 6)Do not bend - these are still just wire antennas and the bend happens on that wire.

These are very well tuned antennas for Meshtastic