Nokia ARMA 474803A is an outdoor macro Remote Radio Unit (RRU / RFM) under Nokia AirScale radio access portfolio, 6T6R, Band20 (800MHz FDD) designed for LTE / 4G and 5G NR FDD deployment. It is widely used for wide-area coverage, rural coverage, suburban macro sites and layer coverage complement. It adopts high-efficiency power amplifier, passive heat dissipation, IP65 outdoor enclosure, supports AISG RET antenna control, connects to AirScale BBU via CPRI / eCPRI optical interface. It features compact pole-mounted design, low site engineering requirement, suitable for multi-vendor network modernization and refarming projects.
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Min.Order Quantity:
1pcPrice:
NegotiableDelivery Time:
3-5 dayswarranty time:
six monthsPlace of Origin:
ChinaPayment Terms:
T/T, Western Union, MoneyGramNokia ARMA 474803A AirScale RRU 6T6R B20 800MHz 360W
Product Description
| Item | Parameter |
|---|---|
| Radio Configuration | 6T6R |
| Frequency Band | Band 20 (791–821 MHz UL / 832–862 MHz DL) |
| Total RF Output Power | 360W (6 × 60W per TX channel) |
| Supported RAT | FDD-LTE, 5G NR FDD, backward compatible with UMTS |
| Max Instant Bandwidth | 40MHz |
| Antenna Connector | 4.3-10 female, 6 antenna ports |
| AISG | Support AISG 2.0 for RET / TMA |
| Power Supply | -48V DC (nominal); operating range: -40.5 VDC ~ -57 VDC |
| Max Power Consumption | 1167 W @ full RF load |
| Ingress Rating | IP65 |
| Operating Temperature | -40 ℃ ~ +55 ℃ |
| Cooling | Passive natural convection (no fan) |
| Mounting | Pole / tower bracket mount |
| Dimension | Approx. 450 × 490 × 130 mm |
| Weight | Approx. 22 kg |
| Optical Interface | CPRI / eCPRI to AirScale BBU |
| Certifications | CE, FCC, RoHS |



FAQ
Q1: What band and radio mode is ARMA 474803A? Can it work for 5G?
A1: It is Band20 (800MHz) 6T6R FDD radio. It supports LTE FDD and 5G NR FDD, commonly used for low-band wide coverage, not TDD. It cannot switch to other frequency bands like B3 / B7 / n78.
Q2: What BBU is compatible with ARMA 474803A?
A2: It belongs to Nokia AirScale family, works with AirScale Common BBU (ASIB / ASIC). It does NOT fit old Flexi BTS platform; CPRI version and software release must be matched before commissioning.
Q3: Does this RRU have an internal fan? What is the maintenance feature?
A3: Passive cooling, no built-in fan. Zero moving parts, low onsite maintenance, suitable for remote rural sites where fan failure is a high risk.
Q4: Can I use ARMA 474803A with a non-Nokia BBU?
A4: Normally not supported. It is Nokia proprietary AirScale radio; interoperability with third-party BBU is not validated and not recommended for commercial deployment.
Q5: What is the difference between ARMA 474803A and other Nokia AirScale RRUs like AEQP?
A5: ARMA 474803A is 6T6R low-band macro RRU for 800MHz wide coverage. AEQP is 64T64R Massive MIMO IPAA for n78 high-capacity urban hotspots. They target different coverage scenarios and bands.
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