What is the difference between A suffix and B suffix in 4.9 GHz to 6.05 GHz PTP 670?

In 2018, Cambium introduced a new hardware version of the 4.9 GHz to 6.05 GHz PTP 670 ODUs. The earlier version is identified by an "A" at the end of the part number, and the later version is identified by a "B" at the end of the part number. The affected part numbers are as follows:

C050067B001A, C050067B001B: PTP 670 (4.9 to 6.05 GHz) Integrated 23 dBi ODU (FCC)
C050067B003A, C050067B003B: PTP 670 (4.9 to 6.05 GHz) Connectorized ODU (FCC)
C050067B004A, C050067B004B: PTP 670 (4.9 to 6.05 GHz) Integrated 23 dBi ODU (ROW)
C050067B006A, C050067B006B: PTP 670 (4.9 to 6.05 GHz) Connectorized ODU (ROW)
C050067B007A, C050067B007B: PTP 670 (4.9 to 6.05 GHz) Integrated 23 dBi ODU (EU)
C050067B009A, C050067B009B: PTP 670 (4.9 to 6.05 GHz) Connectorized ODU (EU)
C050067B010A, C050067B010B: PTP 670 (4.9 to 6.05 GHz) Integrated 23 dBi ODU (IC)
C050067B012A, C050067B012B: PTP 670 (4.9 to 6.05 GHz) Connectorized ODU (IC)

The only difference between the old and new versions is that an RF filter used for the 5.8 GHz band has been changed to improve out of band emissions performance in the new rules for the FCC 5.8 GHz (U-NII-3) band. You can read about changes in the FCC rules that made this necessary here: FCC rule changes for the 5.8 GHz band (U-NII-3)

We manufacture common hardware for the FCC, ROW, EU and IC regional variants, so all the listed PTP 670 products have the new filter, and all carry the "B" suffix.

There is no performance difference between the "A" and "B" suffix versions.

The "A" and "B" versions are interchangeable and fully compatible.

The "B" suffix ODUs require firmware versions 670-02-60 or later. For use as a PTP 650 replacement, you will need 670-01-46 or later.

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