User's Manual

Dbii Ltd, 16F-3, 482 Zhongxiao East Rd, Sec 5, Taipei 11083 Taiwan
Email: [e-mail] Ph: +886.2.2346.3318, Fax: [phone]
www.dbii.com
health and safety issues. Below are the lists of antennas certified with this product. The OEM
must ensure that end product complies with FCC labeling requirements. This includes a clearly
visible label on the outside of the OEM enclosure specifying the appropriate identifier for this
product as well as the FCC notice below.
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two
conditions: (1) This device may not cause harmful interference, and (2) this device must accept
any interference received, including interference that may cause undesired operation.
Software Driver
Irrespective of the software driver used, this radio can only transmit in the following frequencies
2400–2483.5 MHz
5725–5850 MHz
4940-4990 MHz
Operation Frequency and Antennas
Operation in this band with antenna gains greater than 6dBi are regulated under CFR47
15.247(c)(4). Copy of regulation is included below for reference.
(1) Fixed point-to-point operation:
(i) Systems operating in the 2400–2483.5 MHz band that are used exclusively for fixed, point-to-point
operations may employ transmitting antennas with directional gain greater than 6 dBi provided the
maximum conducted output power of the intentional radiator is reduced by 1 dB for every 3 dB that
the directional gain of the antenna exceeds 6 dBi.
(ii) Systems operating in the 5725–5850 MHz band that are used exclusively for fixed, point-to-point
operations may employ transmitting antennas with directional gain greater than 6 dBi without any
corresponding reduction in transmitter conducted output power.
(iii) Fixed, point-to-point operation, as used in paragraphs (c)(1)(i) and (c)(1)(ii) of this section,
excludes the use of point-to-multipoint systems, omnidirectional applications, and multiple co-located
intentional radiators transmitting the same information. The operator of the spread spectrum or
digitally modulated intentional radiator or, if the equipment is professionally installed, the installer is
responsible for ensuring that the system is used exclusively for fixed, point-to-point operations. The
instruction manual furnished with the intentional radiator shall contain language in the installation
instructions informing the operator and the installer of this responsibility.
(2) In addition to the provisions in paragraphs (b)(1), (b)(3), (b)(4) and (c)(1)(i) of this section,
transmitters operating in the 2400–2483.5 MHz band that emit multiple directional beams,
simultaneously or sequentially, for the purpose of directing signals to individual receivers or to groups
of receivers provided the emissions comply with the following:
(i) Different information must be transmitted to each receiver.
(ii) If the transmitter employs an antenna system that emits multiple directional beams but does not do
emit multiple directional beams simultaneously, the total output power conducted to the array or
arrays that comprise the device, i.e., the sum of the power supplied to all antennas, antenna
elements, staves, etc. and summed across all carriers or frequency channels, shall not exceed the
limit specified in paragraph (b)(1) or (b)(3) of this section, as applicable. However, the total
conducted output power shall be reduced by 1 dB below the specified limits for each 3 dB that the
directional gain of the antenna/antenna array exceeds 6 dBi. The directional antenna gain shall be
computed as follows:
(A) The directional gain shall be calculated as the sum of 10 log (number of array elements or staves)
plus the directional gain of the element or stave having the highest gain.