Helium Outdoor DAS
For indoor Helium Hotspot, the transmission distance is generally increased by adding antennas, filters and amplifiers . Antennas are selected from FRP high gain omni antennas and directional flat panel antennas. Filters are selected for cavity filters with high out-of-band rejection and low insertion loss in working band. Amplifiers require simultaneous enhancement of transmitted and received signals, i.e. bidirectional amplifiers or boosters, to compensate for insertion losses in feeders and connectors. Since the amplifier needs to be powered, a Bias Tee is required for the convenience of power supply, which requires the use of feeder power supply technology. If you want to further enhance the signal, you can use a 2-way power divider, or a 3-way power divider, or a 4-way power divider to divide the signal of a miner into two channels, 3 channels, and 4 channels, respectively, getting better performance in different direction.
Solutions Example
![](https://cdn.shopify.com/s/files/1/0774/4330/1668/files/1_4275f930-43bd-4ca4-a14f-64a7d94e9d30_600x600.png?v=1687193806)
Precautions for Use
Place the antenna as high as possible
The filter is as close to the antenna as possible
The amplifier is as close as possible to the filter
The power divider can be placed outdoors or indoors for easy use
Bias Tee is placed near the power supply
If there are more thunderstorms around, you need to add a lightning protector
868MHz Helium Outdoor DAS
Features
-
863MHz to 870MHz frequency range
-
Outdoor use
Products that need to be used
-
868MHz FRP Omni Antenna
-
868MHz Cavity Filter
-
868MHz Bidirectional Amplifier
-
868MHz Bias Tee
-
868MHz Power Divider
-
Low insertion loss RF Cable
915MHz Helium Outdoor DAS
Features
-
902MHz to 928MHz frequency range
-
Outdoor use
Products that need to be used
- 915MHz FRP Omni Antenna
- 915MHz Cavity Filter
- 915MHz Bidirectional Amplifier
- 915MHz Bias Tee
- 915MHz Power Divider
- Low insertion loss RF Cable