Amateur radio gets partial stay on 3.5 GHz




Pending further action by the FCC, secondary amateur radio use of the 3.3 – 3.45 GHz band segment may continue indefinitely. The FCC, as part of a long Second report and order (R&R) for a commercial license of 3.45-3.55 GHz adopted on March 17, agreed with the ARRL that continued amateur radio access at 3.3 to 3.45 GHz should be allowed until review spectrum from 3.1 to 3.45 GHz in a later procedure. FCC action in WT Docket 19-348 represents a partial – and temporary – stay of the FCC’s December 2019 proposal to remove ham radio from the entire band, and it makes available an additional 50 megahertz compared to an FCC proposal last fall to allow temporary hobbyists use 3.3 to 3.4 GHz.

Secondary amateur operation in the 3.45 – 3.50 GHz band must cease 90 days after public notice that the spectrum auction has ended and licensing has begun. This is expected to happen in early 2022. The FCC announced the 3.45-3.55 GHz auction to open to 5G commercial interests on March 17.

The FCC said that “as we adopt our proposal to fork the band, we adjust our proposal and set 3450 MHz as the frequency at which the band will be divided. “He shares” the opinion of the ARRL according to which the guard band is not necessary from a technical point of view. We also recognize that the nature of the realities of amateur equipment makes 50 MHz at 3400-3 450 MHz particularly valuable to amateur operators, as it means that existing equipment can continue to operate in the band for the time being.

This allows’ amateur operations to continue in the lower part of the band while the [FCC and federal government users] continue to analyze whether this spectrum can be reallocated for flexible use, ”said the FCC. The FCC had proposed to split the band to 3.4 GHz, allowing amateur use in 100 megahertz spectrum “while also providing a buffer to protect flexible use operations at the lower edge of the 3.45 GHz band. “.

“We are therefore allowing secondary amateur operations to continue in the 3.4 – 3.45 GHz part of the band,” the FCC said. “We stress, however, that amateur licensees remain secondary users, and those operating on frequencies near the 3450 MHz band should do so with particular caution to avoid causing harmful interference to licensees. flexible use of 3.45 GHz service, which hold primary status. In light of these considerations, while amateur operations between 3450 MHz and 3500 MHz must cease within 90 days of the public notice announcing the close of the auction for the 3.45 GHz service, as specified in the Report and order; amateur operations can continue between 3300 MHz and 3450 MHz while the Commission, NTIA and DoD continue to analyze whether this spectrum can be reallocated for commercial wireless use.

“It is not expected that such operations will be factored into future planning of commercial wireless operations in this spectrum, or that amateur operators will be given more than a short notice period before their operations are due. cease, ”the FCC said.

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