- Frequencies include 902-928 MHz, 2400-2483.5 and 5725-5850 MHz
- Maximum Transmitter Power Output (TPO) is 1.0 watt or 30dBm
- The formula for converting antennas from dBi to dBd is dBi-2.2=dBd
Point to Point (PTP) and Point to Multipoint (PTMP):
PTP: is when two sites talk only to eachother.
PTMP: is when multiple sites talk to a single core site.
Each of these modes have different EIRP (Effective Isotropic Radiated Power) limitations.
Point to MultiPoint (PTMP) Limitation:
- The maximum EIRP power allowed is 36dBm (4 watts).
| Maximum transmitter power versus largest antenna table for PTMP | ||
| Transmitter RF power | Antenna GainM | EIRP in watts |
| 30dBm 1W | 6dBi | 3.98 |
| 27dBm 500mW | 9dBi | 3.98 |
| 24dBm 250mW | 12dBi | 3.98 |
| 20dBm 100mW | 15dBi | 3.98 |
| 17dBm 50mW | 18dBi | 3.98 |
| 14dBm 25mW | 21dBi | 3.98 |
| 10dBm 10mW | 24dBi | 3.98 |
- Higher EIRP is allowed if the antennas are directional in nature.
- Systems operating in a point-to-point operation may use transmitting antennas with directional gain greater than 6 dBi, provided the maximum output power of the transmitter is reduced by 1dB for every 3dB that the directional gain of the antenna that exceeds 6 dBi. Maximum transmitter power versus largest antenna table for PTP:
| Maximum transmitter power versus largest antenna table for PTP | ||
| Transmitter RF power | Antenna GainM | EIRP in watts |
| 30dBm 1W | 6dBi | 3.98 |
| 29dBm 800mW | 9dBi | 6.35 |
| 28dBm 630mW | 12dBi | 10.14 |
| 27dBm 500mW | 15dBi | 15.81 |
| 26dBm 398mW | 18dBi | 25.23 |
| 25dBm 316mW | 21dBi | 40.28 |
| 24dBm 250mW | 24dBi | 62.79 |
| 23dBm 200mW | 27dBi | 100.2 |
This information is just provided as a guideline. We highly recommend that you read the FCC Part 15 rules and understand them before attempting any installations.
