Same equipment category
Ericsson
Radio 6646 66B8 66B20 66B28 C
What it does: Radio transmission / reception. Operating RF bands / ranges: B8 + B20 + B28B (900 + 800 + 700 MHz).
1 part number: KRC1610004/1
Viewing: model overview
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Main specifications
TechnologiesB8: GSM only in mixed mode, WCDMA, LTE FDD, Massive IoT/NB-IoT, NR and ESS; B20/B28B: LTE FDD, Massive IoT/NB-IoT, NR and ESS. Massive-IoT modes: CM/IB/GB/SA
TX / RX modes6T6R total; three-sector deployment provides 2T2R per sector, and two radios can be combined for 4T4R site capacity
RF output powerB8: 6 × 40 W; B20: 6 × 60 W; B28B: 6 × 60 W. For GSM with two carriers, the maximum is 60 W per radio (30 W per carrier), GSM support is not established for B20/B28B
Interfaces and data rates2 CPRI data ports; cascading and independent line-rate support; 2.5/4.9/9.8/10.1/24.3 Gbps
FamilyRadio 6646
Additional technical information
- Bandwidth
- B8: 35 MHz IBW / 35 MHz operational bandwidth, limited to 20 MHz IBW per RF port for GSM, 1.4/3 MHz LTE and NB-IoT standalone; B20: 30/30 MHz, NB-IoT standalone limited to 20 MHz per RF port; B28B: 30/30 MHz, NB-IoT standalone limited to 20 MHz per RF port
- Capacity
- One unit replaces three single-sector triple-band radios in this deployment configuration; two Radio 6646 units can be combined for 4T4R capacity at a site
- Synchronization
- When operated over its documented classic CPRI interface: CPRI slave synchronization; the radio recovers the incoming CPRI bit clock for radio/link transmission and receives time information from the REC/Baseband
- Chassis
- Compact standalone Radio 6646 enclosure with passive cooling
- Functional role
- Compact low-band triple-band, triple-sector 2G–5G macro radio
- Architecture
- One compact triple-band radio serves three sectors with 6 TX and 6 RX branches and two CPRI data ports; two units can be combined for 4T4R site capacity
- Subtype
- 6TX/6RX B8+B20+B28B triple-band, triple-sector FDD radio
- Details
- Passive cooling; two-unit deployment can put one radio into deep sleep at low traffic. In the TDC NET trial, one Radio 6646 replaced three Radio 2238 units and reduced total weight by 60% and embodied CO2e by 1.7 metric tonnes
- Connection notes
- DU/Baseband via CPRI
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