AltoPlex Wireless Bridge Starter Kit
For Last Mile and Campus
The D621 Starter Kit is a pair of 60 GHz radios with integrated 128-element beamforming antennas that deliver best-in-class performance and resilience in a compact form factor. It ships pre-configured as a point-to-point (PtP) link and supports point-to-multipoint so you can add AltoPlex clients later.
D621 radios are carrier-grade, manufactured in the USA and feature IP67 weather-sealing for reliable outdoor operation. Pre-configured radios, auto-aligning antennas, and included PoE injectors make deployment fast and simple.

High Capacity
Up to 3.8 Gbps aggregate Layer 2 throughput
Low Latency
Sub 1ms latency
Adaptive Beamforming
128-element, phased array, beamforming antenna with 90° azimuth and 40° elevation scanning for maximum link resiliency and 3.8 Gbps range up to 400m (1,312 ft)
2.5 Gigabit Ethernet
Built-in 2.5 GbE port for maximum throughput
Wi-Fi Management and GPS Location
Connect locally using the Wi-Fi network interface to manage the radio directly. Easily locate the radio using the integrated GPS receiver.
Dense Network Ready
60 GHz spectrum with beamforming and TDMA for extremely reliable dense networks
Security
AES-128 encryption with automatic secure key distribution
Carrier-Grade
IP67 rated enclosure and built in USA for reliable, long-term operation in the field
Simple and Rapid Installation
Altowav’s antennas auto-align for easy installs, and our Open API and native layer 2 architecture enable easy integration into operators’ existing networks
Specifications
System
| Radio Technology | 802.11ay-based chipset with Altowav TDMA air interface |
| Configuration | Point-to-Point (PtP) and Point-to-Multipoint (PtMP)
Distribution or Client |
| Topologies | PtP, PtMP, multi-hop, ring |
| Frequencies | 57 to 66 GHz |
| Channel Bandwidth | 2.16 GHz |
| Channel Access | TDMA/TDD with reserved per-client time slots |
| Network Synchronization | GPS-disciplined TDD timing across sectors and sites; clients synchronized over the air |
| Modulation and Coding Schemes | 12 levels, adaptive—MCS-1 (BPSK) to MCS-12 (16QAM) |
| Antenna | Integrated 128-element beamforming antenna with wide scanning range: 90° azimuth, 40° elevation |
| Maximum EIRP | 40 dBm |
| Range (D621 to D621) | Up to 400m (1,312 ft) at 3.8 Gbps |
| Capacity | Up to 3.8 Gbps aggregate Layer 2 throughput on a single 2.16 GHz channel |
| Ethernet Frame Type | Transparent bridging of all Ethernet types including VLAN and VLAN stacking |
| Latency | < 1ms |
| L2 Switching | Complete Layer 2 switching, including VLAN support |
| Spanning Tree | RSTP (IEEE 802.1w) for ring and redundant-path protection |
| Security | AES-128 |
| PtMP Remote Support | Up to 15 client units +1 distribution link |
| Wi-Fi Management Interface | 2.4 GHz IEEE 802.11b/g/n wireless management interface (not a data access point) |
| GPS | Integrated GPS receiver for timing and to locate individual radios |
Connectivity
| Ethernet | 1 x 2.5 GbE RJ45 |
| Voltage | 56 VDC |
| PoE Input | 802.3af |
| Power Consumption | <13 W maximum |
Management
| Management | Web GUI, CLI, and REST API |
Mechanical
| Dimensions (H x W x D) |
150 x 95 x 35 mm (5.9″ x 3.7″ x 1.4″) |
| Weight | 400 g (14 oz) |
| Operating Temperature | -30° to +55°C (-22° to +131°F) |
| Casing | Die-cast powder-coated aluminum chassis with PC-ABS radome |
| Ingress Protection | IP67 |
| Regulatory | FCC, ISED, CE |
| ESD | EN 61000-4-2 |
| EMC | EN 61000-4-3 |
| Radio | ETSI EN 303 722 V1.2.1, EN 300 328 V2.2.2, EN 303 413 V1.2.1 |
| Mounting | Integrated wall and pole mount supporting 12.7 mm (0.5 in) band clamps. Additional mounting accessories are available. |
Model Number
| AW3-D621-KIT-C-PW | D621 Starter Kit – 2 D621 Single-Port 60 GHz Network Radios with PoE Injectors |
Included Accessories (2 Ea.)
| AX-P-IN-AT-5G-US | Indoor 802.3at (30 W) 5 GbE PoE injector with 0.8m US power cord |
Optional Accessories
| AX-AW3-MT-WALL | Wall standoff bracket that enables azimuth adjustment |
| AX-AW3-EXT-MOUNT | Extended range pole mounting kit for AltoPlex radios, enabling up to +60/-45° elevation adjustment |
| AX-PSW-OD-4AT-4C25 | Outdoor 4 port PoE 2.5 GbE switch |
| AX-PSW-OD-MOUNT | Pole mount bracket for Outdoor PoE switch |