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It supports transport broadband
Mopole antennas such as the CD91 exhibit a 4 dB improvement in performance over a 3-wave whip but in pattern tests deliver only 2
The uni-directional design radiates signals in a single direction
utility vehicles
Poynting HELI-21 Uni-Directional Mining Antenna, 2400-6000 MHz, 12/13 dBi, N-Male RFI Antenna It supports transport broadbandThe Poynting HELI 21 forms part of a series of Mini HELI antennas. These antennas are only mini in size relative to their bigger brothers, the HELI 3, HELI 4 & HELI 8, but offer medium to high gain, which makes these antennas ideal for mining tunnels where IoT M2M connectivity is deployed and can also be used for coverage into the stopes. The HELI 21 is a dual band 2. 4 GHz and 5 GHz Wi Fi antenna, radiating in one direction (i. e., uni directional).
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