Technical Specifications. Dual Pole Radio Mount (DPRM) 2+0 Power Split Radio Mount (PSRM) 1+1 Symmetrical Split Radio Mount (SSRM) 1+1

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1 Technical Specifications Dual Pole Radio Mount (DPRM) 2+0 Power Split Radio Mount (PSRM) 1+1 Symmetrical Split Radio Mount (SSRM) 1+1

2 Dual Pole Radio Mount (DPRM) Technical Specifications The Dual Polarity Radio Mount (DPRM) is used to mount two radios of opposing polarity to the same antenna. Both radios can transmit simultaneously, providing a doubling of traffic throughput,. A special mounting bracket allows two radios to be mounted face to face, directing radio frequency energy from both radios to the antenna. It is recommended that different frequency channels be used for each unit unless XPIC is being software enabled. Parameter Performance Specification DPRM Dimensions 7.5 (w) x 7.5 (h) x 12 (d); 19 cm (w) x 19 cm (h) x 30.5 cm (d) Weight 9 lbs; 4.1 kg Wind Loading Survival wind load of 125 mph: 45 lbf 1 Supported Configurations 2+0 Insertion Loss (Vertical Port).25 db maximum 2 Insertion Loss (Horizontal Port).75 db maximum 3 Connector Vertical Port Radio Port Connector Horizontal Port Radio Port Connector Antenna Port Antenna Port Channel Use Adjacent or separated Cross-Polarized Channels Frequency Support L6,U6,7,8,11,13,15,18,23,24DEMS,26,28,38 GHz 4 Figure 1 DPRM Mechanical drawing 1 This should be added to the Fs for the Antenna Note: this does not get added to the Fa antenna force as the DPRM is shielded by the antenna 2 In Pathloss 5.0, this is accounted for in miscellaneous coupler loss of 0.25dB per end for Vertical port. 28 & 38GHz have slightly higher losses: 28 GHz = 0.35dB, 38 = 0.50dB 3 In Pathloss 5.0, this is accounted for in miscellaneous coupler loss of 0.75dB per end for Horizontal port. 28 & 38GHz have slightly higher losses: 28 GHz = 1.0dB, 38 = 1.2dB 4 Does not support 24 GHz UL DWI-APP Page 2 of 10 DragonWave Inc.

3 Figure 2 DPRM Final Assembly (Coupler Compatible Across Horizon Product Lines) DPRM Top-Level Part Child Part Number Part Description A-OPT-HWR-DPRM-L OMT, DUAL RADIO CROSSPOL ANTENNA FEED, GHZ A-OPT-HWR-DPRM-U OMT, DUAL RADIO CROSSPOL ANTENNA FEED, GHZ A-OPT-HWR-DPRM OMT, DUAL RADIO CROSSPOL ANTENNA FEED, GHZ A-OPT-HWR-DPRM OMT, DUAL RADIO CROSSPOL ANTENNA FEED, GHZ A-OPT-HWR-DPRM OMT, DUAL RADIO CROSSPOL ANTENNA FEED, 11 GHZ A-OPT-HWR-DPRM OMT, DUAL RADIO CROSSPOL ANTENNA FEED, 13 GHZ A-OPT-HWR-DPRM OMT, DUAL RADIO CROSSPOL ANTENNA FEED, 15 GHZ A-OPT-HWR-DPRM OMT, DUAL RADIO CROSSPOL ANTENNA FEED, 18 GHZ A-OPT-HWR-DPRM OMT, DUAL RADIO CROSSPOL ANTENNA FEED, 23 GHZ A-OPT-HWR-DPRM OMT, DUAL RADIO CROSSPOL ANTENNA FEED, 26 GHZ A-OPT-HWR-DPRM OMT, DUAL RADIO CROSSPOL ANTENNA FEED, 28 GHz A-OPT-HWR-DPRM OMT, DUAL RADIO CROSSPOL ANTENNA FEED, 38 GHz When the DPRM is installed and the ODU is not immediately installed please ensure the waveguide ports are wrapped with weather proofing tape (adhesive side out). If the 2nd port is not being used for the near term deployment, install the metal cover (with 4 screws) and then wrap with a weather proofing tape, adhesive side out, over the O ring. DWI-APP Page 3 of 10 DragonWave Inc.

4 Power Split Radio Mount (PSRM) Technical Specifications The PSRM is used to mount two radios/units of the same polarity to the same antenna. Using a PSRM, a customer can provide hardware redundancy on a link by providing a primary (active) and secondary paths. The PSRM allows two radios to be mounted face to face, directing radio frequency energy from both radios through a single antenna. Both radios will be connected with the same polarization and configured with the same channel frequency so that in the event of a hardware failure and or failover on the active link, the secondary radio will simply take over using the same licensed frequency. Parameter Performance Specification PSRM Dimensions 7.5 (w) x 7.5 (h) x 12 (d); 19 cm (w) x 19 cm (h) x 30.5 cm (d) Weight 9 lbs; 4.1 kg Wind Loading Survival wind load of 125 mph: 45 lbf 5 Supported Configurations 1+1 Insertion Loss (Primary Port) 1.9 db maximum 6 Primary to primary = 3.8dB total link loss, Primary to secondary = 8.4dB total link loss Insertion Loss (Secondary Port) 6.5 db maximum 7 Secondary to secondary = 13.0dB total link loss, Primary to secondary = 8.4dB total link loss Connector Primary Port Radio Port Connector Secondary Port Radio Port Connector Antenna Port Antenna Port Channel Use Reuse the same channel Frequency Support 6,7,8,10,11,13,15,18,23,24DEMS,26,28,38 GHz 8 Figure 3 PSRM Mechanical drawing 5 This should be added to the Fs for the Antenna Note: this does not get added to the Fa antenna force as the DPRM is shielded by the antenna 6 In Pathloss 5.0, this is accounted for in miscellaneous coupler loss. 28 & 38GHz have slightly higher losses: 28 GHz = 2.0dB, 38 = 2.0dB 7 In Pathloss 5.0, this is accounted for in miscellaneous coupler loss. 28 & 38GHz have slightly higher losses: 28 GHz = 7.5dB, 38 = 8.5dB 8 Does not support 24 GHz UL. DWI-APP Page 4 of 10 DragonWave Inc.

Figure 4 PSRM Final Assembly in Horizontal Polarization (Coupler Compatible Across Horizon Product Lines) PSRM Top-Level Part Child Part Number Part Description A-OPT-HWR-PSRM-06 74-000250-01-01 6

5 Figure 4 PSRM Final Assembly in Horizontal Polarization (Coupler Compatible Across Horizon Product Lines) PSRM Top-Level Part Child Part Number Part Description A-OPT-HWR-PSRM GHz Power Split Radio Mount (PSRM) A-OPT-HWR-PSRM GHz Power Split Radio Mount (PSRM) A-OPT-HWR-PSRM GHz Power Split Radio Mount (PSRM) A-OPT-HWR-PSRM GHz Power Split Radio Mount (PSRM) A-OPT-HWR-PSRM GHz Power Split Radio Mount (PSRM) A-OPT-HWR-PSRM GHz Power Split Radio Mount (PSRM) A-OPT-HWR-PSRM GHz Power Split Radio Mount (PSRM) A-OPT-HWR-PSRM GHz Power Split Radio Mount (PSRM) A-OPT-HWR-PSRM GHz Power Split Radio Mount (PSRM) A-OPT-HWR-PSRM GHz Power Split Radio Mount (PSRM) A-OPT-HWR-PSRM GHz Power Split Radio Mount (PSRM) A-OPT-HWR-PSRM GHz Power Split Radio Mount (PSRM) DPRM versus PSRM Identification There are several differences between a DPRM and an RDRM unit. Listed below are the two quick ways to identify one vs the other. 1. Part Number Identification The easiest and most obvious way to determine between a DPRM and PSRM would be to check the unit part number. 2. Radio Polarization Marker Identification Another way to identify a DPRM from an PSRM is to look at the polarization markers on either side of the units. A DPRM will be labeled with a 1 on the left side which indicates where the vertically polarized radio/unit should be connected and the 2 on the right side indicates where the horizontally polarized radio/unit gets connected. DWI-APP Page 5 of 10 DragonWave Inc.

6 The PSRM is labeled with primary and secondary stickers. The primary side indicates where the active radio/unit will be installed, and likewise the secondary side indicates where the in-active or backup radio/unit will be installed. Figure 5 Product Photo of Left Side of Coupler Plate DWI-APP Page 6 of 10 DragonWave Inc.

7 Symmetrical Split Radio Mount (SSRM) Technical Specifications The SSRM allows two radios to be mounted face to face, directing radio frequency energy from both radios through a single antenna. Both radios will be connected with the same polarization and configured with the same channel frequency so that in the event of a hardware failure and or failover on the active link, the secondary radio will simply take over with the same licensed frequency. In contrast to a PSRM, the link budget remains the same regardless of the combination of primary and secondary radios. In order to achieve this symmetrical operation, both ports have the same insertion loss, approximately 3.3 db. Parameter Performance Specification SSRM Dimensions 7.5 (w) x 7.5 (h) x 12 (d); 19 cm (w) x 19 cm (h) x 30.5 cm (d) Weight 9 lbs; 4.1 kg Wind Loading Survival wind load of 125 mph: 45 lbf Supported Configurations 1+1 Insertion Loss (Common Primary) 3.3 ±0.5 db Insertion Loss (Common Secondary) 3.3 ±0.5 db Return Loss (all ports) 18 db min Isolation (Primary-Secondary) 20 db min Connector Primary Port Radio Port Connector Secondary Port Radio Port Connector Antenna Port Antenna Port Channel Use Reuse the same channel Frequency Support 11, 18 GHz Figure 6 SSRM Coupler Assembly DWI-APP Page 7 of 10 DragonWave Inc.

8 Figure 7 SSRM Mechanical Drawing DWI-APP Page 8 of 10 DragonWave Inc.

9 SSRM Top-Level Part Child Part Number Part Description A-OPT-HWR-PSRM GHz SYMETRICAL 3dB SPLIT RADIO MOUNT (SSRM) A-OPT-HWR-PSRM GHz SYMETRICAL 3dB SPLIT RADIO MOUNT (SSRM) Frequently Asked Questions WHAT IS THE LINK ENGINEERING LOSS ASSOCIATED WITH ADDING THE COUPLER? DragonWave recommends that the insertion loss listed in the product tables be included when designing a coupler into a link. If a simulation tool like Pathloss is being used, it is recommended to introduce this as miscellaneous loss within the Branching Network TR-TR. WHEN SHOULD THE DPRM (2+0) COUPLER BE DESIGNED INTO THE NETWORK? DragonWave recommends that core network links should be analyzed Day 1 with a DPRM coupler included. This ensures there is adequate margin (correct sized antenna is purchased, licensed and tower lease arranged) is built into a link for future DPRM scalability whether the coupler is deployed Day 1 or not. WHEN SHOULD THE PSRM OR SSRM (1+1) COUPLER BE DESIGNED INTO THE NETWORK? DragonWave recommends for MW sites where access is restricted or the customer service requirements warrant delivering the highest possible site availability, that hardware redundancy be used. SSRM coupler would be used where the customer preference is to have symmetrical loss of 3 db on both the primary and secondary MW paths, rather than the asymmetric loss of 1.9 and 6.5 db when deploying the PSMR coupler. ASSUMING THE DPRM IS INSTALLED DAY 1, WHAT IS THE PROCESS IN ADDING THE SECOND RADIO PATH? Essentially, this is similar to installing a new DragonWave radio link, minus installing and aligning the antenna. DragonWave includes a cap which is shipped with the DPRM and protects the Horizontal port. The cap on the DPRM is removed and the second radio is clipped into place ensuring that it is in the Horizontal polarized position. Appropriate cable is secured to radio unit and connected to the modem (cable will depend on whether it is a Horizon Compact + or Horizon Quantum), grounding installed and cable run to equipment facility. Once the new radio link is connected, follow the Initial Configuration of the DragonWave System to configure the system. The above steps will not affect existing traffic on the first link. WHAT ARE THE SERVICE IMPLICATIONS OF NOT INSTALLING THE DPRM DAY 1? Service interruption will be experienced when installing the DPRM coupler, as the live radio link will need to be turned off while being installed. Depending on the speed of install, expect an outage from 1 to 15 minutes. DO I NEED TO OBTAIN LEASING APPROVAL FROM THE TOWER OPERATOR? In most cases, the leasing agreement with the tower operator is written in terms of the antenna size and quantity and possibly number of cable runs. Given the addition of a DPRM coupler does not modify this formula; there are no additional leasing costs incurred for adding this equipment on the tower. With either Quantum ODU or Horizon Compact +, zero collocation foot print is required, so there would also be no additional rack space required for this system upgrade. Please review leasing documentation prior to installation. DWI-APP Page 9 of 10 DragonWave Inc.

10 CAN THE VERTICAL AND HORIZONTAL RADIO S BE DEPLOYED ON THE SAME CHANNEL IF REQUIRED? Yes, but XPIC will need to be software enabled on Horizon Quantum systems. There is a slight impact to the link budget. DO THE VERTICAL AND HORIZONTAL RADIO S NEED TO OPERATE WITHIN THE SAME SUB- BAND? No, there is no link engineering benefit for both radios to operate in the same frequency band (i.e. both in 23 GHz Band 1 operating at different channels) or within different bands (i.e. 23 GHz 1 and the other 23 GHz 2). From an operations and sparing perspective it is recommended that the same radio bands be used. IS THE SAME DPRM COUPLER CAPABLE OF SUPPORTING HORIZON COMPACT +AND HORIZON QUANTUM? Yes, the DPRM coupler is common and can be used by either system. It is also possible to mix the systems to have Horizon Compact + on the Horizontal Port and Horizon Quantum on the Vertical Port. DWI-APP Page 10 of 10 DragonWave Inc.

DragonWave, Horizon and Avenue are registered trademarks of DragonWave Inc DragonWave Inc. All rights reserved

DragonWave, Horizon and Avenue are registered trademarks of DragonWave Inc DragonWave Inc. All rights reserved NOTICE This document contains DragonWave proprietary information. Use, disclosure, copying or distribution of any part of the information contained herein, beyond that for which it was originally furnished,