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-This compact GSM900 omnidirectional "rubber-duck" GSM antenna provides broad coverage and 3.5dBi gain.
-It is a coaxial sleeve design with an omni-directional pattern.
-It is designed to transmit on the 900mhz frequencies with a top end transmission not to exceed 25 watts.Works for the current digital MOBIL systems.
Specifications
Frequency: 824-960MHz
VSWR : ≤1.5
Gain: 3.5dBi
Polarization:Vertical
Directionality: omnidirectional
Horizontal Beam Width:360°
vertical panel Beam Width:90°
Power:50W
Color:Black
Diameter:12mm
Height:243mm /9.6"
Eric M.
Reviewed in the United States on February 29, 2024
These are listed as working for 868-915MHz, but that isn't true. SWR reading of almost 4:1 at 915MHz, and isn't actually resonate until almost 1100MHz. Useless for LoRa. Returned.
Speech Girl and Tech Guy
Reviewed in the United States on December 15, 2024
The description now says it but there is no center pin. If you have an SMA female like comes with every Lora board you will not be connecting to the antenna even when it is screwed on. Yes, that will cook the radio. I’m giving it 1 star because you have no idea what you are getting . Here are pictures of the internals of the 2 antennas I received in the same pack. One has a metal sleeve, one does not.
Rich B.
Reviewed in the United States on August 3, 2022
Item with bar code X001WZA02R is listed as an 868/900/915MHz antenna with +3.5 dBi gain. Antenna tester showed all 4 packages (8 antennas total) are resonant on 1.2GHz and nowhere near the labeled frequencies. Probably a QA issue, or I'd have given it only 1 star.
Paul
Reviewed in the United States on October 2, 2022
Don’t buy. Poor quality. Defective SMA connector lacking prong to connect correctly. Clearly no product QA at this company.
tsviper
Reviewed in the United States on December 3, 2021
Cheaply made and don’t work as well as the other one I ordered to replace these
Tech Tango
Reviewed in the United States on November 25, 2021
I guess the nice thing to say here is that these antennas are expertly tuned for 880MHz, but drop off very quickly outside that band.These have an SWR of 2 to 3 in the 915MHz band, though, terrible.
Tom N
Reviewed in the United States on January 28, 2021
I bought these to replace a "sticker type" internal antenna used with an RFM969H radio module. Make a big improvement on the signal strength. Another review said these didn't work for them. Maybe it is a quality control problem rather than a design problem.
Funky Monkey
Reviewed in the United States on January 29, 2020
I tried swapping a little 0dBi stub antenna for this supposedly 3.5dBi antenna. OMG it was so bad - the stub antenna was receiving 903MHz LoRA packets with a rssi of -109. This new antenna won't even receive packets well enough to pass any crc checks, which means the rssi is below -124. So definitely not anywhere near 3.5 dBi and worse than a tiny decent stub antenna.
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