For
a WISP system, what wireless antennas should I use for my clients
(CPE)?
This depends upon the hub antenna, cable type and length, distance,
data rate and terrain. You should test your system first before
a final wireless antenna selection. For WISP systems using +36
dBm EIRP at the AP and clear LOS, use the following table as
a guide:
Distance
(miles) |
CPE
Antenna Gain |
0.5
- 2 |
7
- 9 dBi |
2
- 5 |
9
- 15 dBi |
5
- 7 |
15
- 20 dBi |
7
+ |
20
- 24 dBi |
How can I route
coaxial cable into a customer's house?
Whatever you do, do NOT drill through his roof. This will
ultimately cause leaks. Most installers route the cable to
a wall location below the eaves and drill a hole just large
enough for the cable to enter. Ideally, the inside coaxial
connector should be installed after the cable is installed.
Seal the wall entry from water using a silicon-based sealant.
The best installation uses existing holes or a basement wall
entry, however sometimes this is not available or practical.
Is the Customer
or Client (CPE) system considered PtMP or PtP?
If the CPE system (or Subscriber Unit - SU) only talks with
the POP/AP and is at a fixed location, then it is considered
to be PtP and can use power and antenna gain associated with
PtP systems, as shown below. (This has been verified by FCC
Certified systems using a 26 dBm radio and a 17 dBi antenna)
If a CPE system is part of a mesh network, then it is considered
PtMP.
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