Nokia AHDB, part number 474257A, is an AirScale Outdoor Remote Radio Head (RRH / RRU), 2T4R, Band 8 (900 MHz), total 160W (2×80W) multi-standard radio unit for Nokia AirScale distributed base station solution.
It works paired with Nokia AirScale System Module / BBU via CPRI fiber link, converting baseband digital signals to RF signals for transmission and receiving uplink RF signals back to baseband. It supports MSR (Multi-Standard Radio) for GSM, WCDMA, FDD-LTE and NB-IoT, and is 5G-ready for low-band refarming. It is designed for outdoor pole / wall mounting, compact integrated heat sink, low-band wide coverage for rural, suburban and large-area coverage scenarios. Max fiber reach to system module is up to 23 km.
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Min.Order Quantity:
1 pcPrice:
NegotiableDelivery Time:
3-5 dayswarranty time:
six monthsPlace of Origin:
ChinaPayment Terms:
T/T, Western Union, MoneyGramNokia AHDB 474257A AirScale RRH RRU Band8 900MHz 2T4R 160W Outdoor Remote Radio
Product Details
Item
Specification
Part Number
474257A (AHDB)
Radio Configuration
2 Transmit, 4 Receive (2T4R)
Frequency Band
Band 8 / N8
TX: 934–960 MHz
RX: 889–915 MHz
RF Output Power
80 W per TX port, total 160 W
Supported RAT
GSM, WCDMA, FDD-LTE, NB-IoT (in-band / guard band / standalone), 5G ready
Modulation
QPSK, 16QAM, 64QAM, 256QAM (DL)
Supported Carrier Bandwidth
LTE: 1.4 MHz / 3 MHz / up to 26 MHz
NB-IoT: 0.2 MHz
Optical Interface
2 × CPRI, 9.8 Gbps with compression
RF Connector
4 × 4.3-10 female connectors
Power Supply
-48 VDC nominal
Operating range: -40.5 VDC ~ -57.0 VDC
Extended: -36 ~ -40.5 VDC / -57 ~ -60 VDC
Installation
Outdoor, pole mount, wall mount, horizontal mount
Enclosure
IP65 outdoor grade
Cooling
Passive heat sink (fanless)
Weight
Approx. 18 kg
Compatibility
Nokia AirScale SM / FSMF baseband module



FAQ
Q1: Can AHDB 474257A run 5G NR directly?
A: It is 5G-ready for Band N8 refarming. New software upgrade on compatible AirScale BBU is required. Native default configuration is 2G/3G/4G/NB-IoT.
Q2: What is the maximum fiber distance between AHDB and BBU?
A: Up to 23 km with CPRI fiber, depends on fiber quality and optical budget.
Q3: What connectors does this RRH use?
A: 4.3-10 type RF ports, not DIN 7/16.
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