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I got this antenna and ran it through my VNA and was impressed at the numbers I got. Very low SWR in the 915MHz frequency (and especially 906.875MHz where you would want to use it for Meshtastic) which was my intended purpose for this antenna, but after checking the data sheet that is located on the SignalPlus web site, it reads 10.5dBi not 15dBi. I contacted both the Amazon seller as well as tech support at SignalPlus and they confirmed that this seller IS in fact their distributor on Amazon but with regards to the 10.5dBi vs 15dBi numbers "The antenna can be 15dbi, BUT only under very ideal circumstances and only at high frequency point." So that the frequencies most people would use it for (in the 900-920MHz range), plan on 10.5dBi of gain. If you want to use it above 1GHz, you might get 15dBi out of it.
Having said that, this is a great antenna and I do recommend it. It has very good gain for Meshtastic ... at the full +22dBm power output of most transmit units, and a reasonable amount of low loss coax, you will be at or slightly above legal limits for transmit power for ISM devices. The build quality is excellent and comes well packed and arrived fast. The 32 feet of RG58 is of good build quality, but the included RG58 cable is the wrong cable for the 915MHz frequency. Even with a perfect 1:1 SWR, the coax will lose 5.087dB (69% of your power at .25w). By comparison, LMR-400 of the same length, only has a loss of 1.285dB or 26%.
Again, this is a quality antenna, but you should count on lower antenna gain numbers and if you are operating at 900+ MHz, sell the included cable at a hamfest.
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Customer reviews
4.3 out of 5
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580 global ratings
Reviews with images
VERY GOOD antenna, but it is 10.5dBi not 15dBi @ 915MHz
I got this antenna and ran it through my VNA and was impressed at the numbers I got. Very low SWR in the 915MHz frequency (and especially 906.875MHz where you would want to use it for Meshtastic) which was my intended purpose for this antenna, but after checking the data sheet that is located on the SignalPlus web site, it reads 10.5dBi not 15dBi. I contacted both the Amazon seller as well as tech support at SignalPlus and they confirmed that this seller IS in fact their distributor on Amazon but with regards to the 10.5dBi vs 15dBi numbers "The antenna can be 15dbi, BUT only under very ideal circumstances and only at high frequency point." So that the frequencies most people would use it for (in the 900-920MHz range), plan on 10.5dBi of gain. If you want to use it above 1GHz, you might get 15dBi out of it.Having said that, this is a great antenna and I do recommend it. It has very good gain for Meshtastic ... at the full +22dBm power output of most transmit units, and a reasonable amount of low loss coax, you will be at or slightly above legal limits for transmit power for ISM devices. The build quality is excellent and comes well packed and arrived fast. The 32 feet of RG58 is of good build quality, but the included RG58 cable is the wrong cable for the 915MHz frequency. Even with a perfect 1:1 SWR, the coax will lose 5.087dB (69% of your power at .25w). By comparison, LMR-400 of the same length, only has a loss of 1.285dB or 26%.Again, this is a quality antenna, but you should count on lower antenna gain numbers and if you are operating at 900+ MHz, sell the included cable at a hamfest.
Top reviews from the United States
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Reviewed in the United States on April 13, 2024
Having said that, this is a great antenna and I do recommend it. It has very good gain for Meshtastic ... at the full +22dBm power output of most transmit units, and a reasonable amount of low loss coax, you will be at or slightly above legal limits for transmit power for ISM devices. The build quality is excellent and comes well packed and arrived fast. The 32 feet of RG58 is of good build quality, but the included RG58 cable is the wrong cable for the 915MHz frequency. Even with a perfect 1:1 SWR, the coax will lose 5.087dB (69% of your power at .25w). By comparison, LMR-400 of the same length, only has a loss of 1.285dB or 26%.
Again, this is a quality antenna, but you should count on lower antenna gain numbers and if you are operating at 900+ MHz, sell the included cable at a hamfest.
Color: 12dBi +10meters cableVerified Purchase
VERY GOOD antenna, but it is 10.5dBi not 15dBi @ 915MHz
Reviewed in the United States on April 13, 2024
I got this antenna and ran it through my VNA and was impressed at the numbers I got. Very low SWR in the 915MHz frequency (and especially 906.875MHz where you would want to use it for Meshtastic) which was my intended purpose for this antenna, but after checking the data sheet that is located on the SignalPlus web site, it reads 10.5dBi not 15dBi. I contacted both the Amazon seller as well as tech support at SignalPlus and they confirmed that this seller IS in fact their distributor on Amazon but with regards to the 10.5dBi vs 15dBi numbers "The antenna can be 15dbi, BUT only under very ideal circumstances and only at high frequency point." So that the frequencies most people would use it for (in the 900-920MHz range), plan on 10.5dBi of gain. If you want to use it above 1GHz, you might get 15dBi out of it.Reviewed in the United States on April 13, 2024
Having said that, this is a great antenna and I do recommend it. It has very good gain for Meshtastic ... at the full +22dBm power output of most transmit units, and a reasonable amount of low loss coax, you will be at or slightly above legal limits for transmit power for ISM devices. The build quality is excellent and comes well packed and arrived fast. The 32 feet of RG58 is of good build quality, but the included RG58 cable is the wrong cable for the 915MHz frequency. Even with a perfect 1:1 SWR, the coax will lose 5.087dB (69% of your power at .25w). By comparison, LMR-400 of the same length, only has a loss of 1.285dB or 26%.
Again, this is a quality antenna, but you should count on lower antenna gain numbers and if you are operating at 900+ MHz, sell the included cable at a hamfest.
Images in this review
Reviewed in the United States on December 31, 2021
For anyone looking to buy a Lora antenna for your miner with similar situation as mine you should definitely consider this antenna. I’d also recommend purchasing a separate LMR 400 cable with it as the RG 58 cable it comes with doesn’t allow the antenna to utilize its full power potential and place it outdoors and as high as possible. My furthest witness so far is 37km. Also pick up a Sandisk extreme 64gb A2 microSD card to process blocks faster.
Color: 5.8dBi +3meters cableVerified Purchase
Great Outdoor Antenna for Rak Helium Hotspot Miner
Reviewed in the United States on December 31, 2021
This antenna flat out works great! I’ve tried a couple antennas for my Rak helium miner. The stock antenna, a 3db, a 9db, and this one doubles my earnings living in a saturated city with sub optimal transmit scale. You can tell the quality is excellent.Reviewed in the United States on December 31, 2021
For anyone looking to buy a Lora antenna for your miner with similar situation as mine you should definitely consider this antenna. I’d also recommend purchasing a separate LMR 400 cable with it as the RG 58 cable it comes with doesn’t allow the antenna to utilize its full power potential and place it outdoors and as high as possible. My furthest witness so far is 37km. Also pick up a Sandisk extreme 64gb A2 microSD card to process blocks faster.
Images in this review
Reviewed in the United States on February 13, 2022
Color: 12dBi +10meters cableVerified Purchase
Believe me; it is not for helium. After one month of hanging it on my rooftop, I Finally proved that it is not working with helium miners. I had 14 witnesses before using it; after a couple of days of using this antenna, my witnesses dropped to 6. So I thought that might be from the cable, so I ordered another genuine cable from Amazon, the same six witnessed. I do have many hotspots near me. So I changed the antenna with another one; now I have 21 witnesses.
Images in this review
Reviewed in the United States on January 18, 2022
Color: 15dBi +10 meters cableVerified Purchase
It's been 3 days and I went from 215 beacons to 319. I will wait a few more days to give you guys an update. Definitely better than the 5dbi that I had before. I live in a town with no high buildings.
Update! After 5 days i went from 215 to 405 beacons. from 45 witnesses to 95. I used a LMR400 cable, didn't used the cable provided. It works!!!!
Update! After 5 days i went from 215 to 405 beacons. from 45 witnesses to 95. I used a LMR400 cable, didn't used the cable provided. It works!!!!
Images in this review
Top reviews from other countries
Jeff D.
Decent antenna
Reviewed in Canada on May 3, 2024Color: 5.8dBi +3meters cableVerified Purchase
José Roldan
Mejoro mis ganancias HNT
Reviewed in Mexico on February 1, 2022Color: 5.8dBi +3meters cableVerified Purchase
José Roldan
Reviewed in Mexico on February 1, 2022
Images in this review
Tamer Zeineldin
Fair price for the value
Reviewed in Canada on February 1, 2022Color: 12dBi +10meters cableVerified Purchase
Charly
Excelente
Reviewed in Mexico on December 14, 2021Color: 12dBi +10meters cableVerified Purchase
