Tenmory 915MHz LoRa Antenna Indoor 3dBi Gain Omni SMA Male IPEX Cable

Funciona para lo que las compré

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 have traceroute tested these with great success. 3dbi is a reasonable claim. Do not believe other manufacturer claims of 5dbi or 10dbi rubber duck antennas. These work well.

Excellent quality. Great price! Mandatory upgrade for the stubby antenna meshtastic kits come with.

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.