Product Info

ENB35A77R Product Description

Version: 1-0-0 (102019)

Comba Confidential

Page 1

1. OVERVIEW

High Power Remote Radio Head (RRH) is a part of Comba’s 4G/5G OPEN RAN solution. The CWS-4240-71

RRH is an outdoor remote radio head for macro BTS site. It built on the state-of-the-art Comba high power

and efficient linear power amplifiers technology, innovative RF filter and industrial design. Featuring with a

compact size, light-weight and low power consumption specification. It supports 2T2R and 4T4R configurations,

multi-carries and multi-technology operation suitable for most mobile operator capacity requirement.

The CWS-4240-71 complaint with the latest Open RAN Alliance fronthaul interface standards. It adopted the

split 7-2 option in the RAN functional split specified in 3GPP which significantly reduce the fronthaul connection

data rate in order to support higher modulation and MIMO in 4G LTE and 5G NR. The software in CWS-4240-

71 is developed by Comba including the lower physical layer (Low-PHY) functions, synchronization and

management protocols. They are compatible with Open RAN Alliance standards compliant BBU software. The

BBU software perform the other RAN functions and the interface to the core network. It’s fronthaul interface

also supports the eCPRI as well as CPRI protocol as transport protocol.

1.1. COMPLIANCE

FCC ID: PX8CWS-4240-71

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.

To comply with FCC RF exposure compliance requirements, each individual antenna used for this device

must be installed to provide a separation distance greater than 442.2cm or more from all persons during

normal operation and must not be co-located with any other antenna for meeting RF exposure requirements.

Warning! Any installation, adjustment, maintenance and repair of the equipment must only be carried out by

trained, authorized personnel. At all times, personnel must comply with any safety notices and instructions.

The circumscribed antenna should not exceed 12.5dBi.