2pcs 433mhz Antenna RF Sma Male Connetcor High Gain 3dbi + 2pcs u.fl ipx to Sma Female Connetcor 1.13 Cable 15cm

I'm using this antenna with the HC-12 transceiver and it works very well.

I ordered a handful of these and none were resonant at 433MHz. They were all resonant too low, around 375 to 400MHz (varied from antenna to antenna).

These antennas worked perfectly for the HC-12 radios. The cables are not very long, but enough for just about any arduino project box.Haven’t had it long enough to know it it can handle much wear, but it’s internal to my project, so it won’t be treated very roughly.

Used with HC-12 transceivers and got less distance that stock internal coil antenna.

Got this for boosting the signal on a Novatel 2100 and it did the trick.