User's Manual

OS2400 Radio Module Exhibit 21: User Manual 3 FCC ID: OQ7OS2400
5
Approved Antennas
It is important to keep the radio’s antenna a safe distance from the user. In order to
meet the requirements of FCC part 2.1091 for radio frequency radiation exposure, this
module must be used in such a way as to guarantee at least 20 cm between the antenna
and the body, or more for high gain antennas. The FCC requires a minimum distance
from the user of 1mW cm2 squared power density” or 20cm, whichever is the greater
distance.
If a specific application requires a proximity of less than 20cm, the application must be
approved through the FCC for compliance to part 2.1093.
At the time of this printing, the antennas listed below were the only antennas approved
for use with the OS2400 Radio Modem. Use of other antennas must be approved
through Locus, Inc.
Antenna gain
(dBi)
Antenna Type Locus, Inc., approved antennas
(Manufacturer: mfg number)
Minimum Distance from Body
(in)
2
¼ Wave Whip
¼ Wave Whip
¼ Wave Whip
¼ Wave Whip
NCC: N24ARSMA1
NCC: N2400SM8
NCC: NOV2400SMA
Centurion: WCR2400MRSP
20cm (7.9in)
5 Collinear Whip
Collinear Whip
NCC: N24HGASM1B
NCC: NOV24HEARSMA2B
20cm (7.9in)
6 Collinear Whip MaxRad: MFB-24006 20cm (7.9in)
8
Collinear Whip
Patch
MaxRad: MFB-24008
MaxRad: MP24008FSMA 20cm (7.9in)
9 Collinear Whip Mobile Mark: 0D9-2400 20cm (7.9in)
11 Patch MaxRad: MP24011FSMA 20cm (7.9in)
The following high-gain antennas can only be used for point-to-point network applications:
13 Patch MaxRad: MP24013FSMA 20cm (7.9in)
15 Yagi Astron: P-2415 20cm (7.9in)
24 Parabolic Dish Pacific Wireless: PMANT25 50cm (19.7in)