We are planning to conduct RF site surveys on 10 sites in the UK to deliver a high density WiFi network (including Voice services) supporting about 20 users per AP radio.
We will use 3602i APs for those networks and the same AP model will be used for the site surveys.
Since we will provide BYOD services too, we had to choose one of the least capable devices that are going to connect to our network as a reference device and check its specs. iPhone 5 is using a dual band radio with the following specifications:
Band Tx Power Antenna Gain EIRP (dBm) EIRP mW
2.4 GHz 16dbm -1.4dbi 14.6 about 32mW
UNII1 14dbm 0.14dbi 14.14 about 25mW
UNII2 13.5dbm -1.66dbi 12dbm 16mW
UNII2-e 12dbm -0.83dbi 11.2dbm about 13mW
These are the available Tx power levels for the 3602i AP:
2,4 GHz and 5 Ghz
Tx Power level 1: 17dBm
Tx Power level 2: 14dB
Tx Power level 3: 11dBm
Tx Power level 4: 8dBm
Tx Powe level 5: 5dBm
Tx Power level 6: 2dBm
Tx Power level 7: -1dBm
Tx Power levle 8: -4dBm
As far as i can understand, these are not EIRP values but just the Tx power of the AP radio.
The 3602i is using a 2dbi antenna on the 2.4Ghz and 4bi on the 5Ghz bands. So the EIRP values for the 2 bands will be as follows:
L1 --> 19dBm --> 79mW
L2--> 16dBm --> 40mW
L3--> 13dBm --> 20mW
L4--> 10dBm --> 10mW
L5--> 7dBm --> 5mW
L6--> 4dBm --> 2.5mW
L7--> 1dBm--> 1.25mW
L8--> -2dBm --> 0.63mW
L1--> 21dBm --> 128mW
L2--> 18dBm --> 64mW
L3--> 15dBm --> 32mW
L4 --> 12dBm--> 16mW
L5--> 9dBm --> 8mW
L6--> 6dBm --> 4mW
L7--> 3dBm --> 2mW
L8--> 0dBm --> 1mW
I have been searching various forums on the Internet and the recommended site survey TxPower for high density or Voice networks is about 12.5 - 25mW. Is this the EIRP or the AP TxPower?
Since the iPhone can transmit up to 32mW on the 2.4GHz and 13mW on the 5GHz band, what is the recommended EIRP on each band to conduct the site survey? Since the 5GHz signals don't travel as far as the 2.4GHz signals, Is it correct to use the same EIRP values on both bands?
Would anybody recommend using 5mW EIRP for the site surveys?