Great news! Amateur secondary use is being allowed to continue throughout the 3.3-3.45 GHz band indefinitely, pending future FCC action. This decision is great news considering the FCC’s original proposal in December, 2019, was to clear amateurs out of the entire band immediately. Consistent with our secondary status, amateurs must ensure that signals are enough below 3.45 GHz so as to not cause harmful interference to the new commercial operators when they come on line, as well to protect federal government operations throughout the band.
As far as the 3.45-3.50 GHz segment, Amateur secondary operations must cease 90 days after Public Notice that the auction for that spectrum has closed. ARRL’s FCC Counsel estimates the final cessation date to be in early 2022, so we likely have just under a year of transition time on that segment.
The AREDN Project Core Team will participate in band plan discussions with groups representing other Amateur interests. Look to this thread for updates and discussion.
Andre, K6AH
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3.4 GHz Discussion
Fri, 03/19/2021 - 15:14
#1
K6AH
3.4 GHz Discussion
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I was hoping I didn't have to sell them on eBay for half the price I bought them for ;-)
Yay!!!
-Damon K9CQB
Thanks for the update Andre and Ken!
Great news, and thanks for the graphic. I'd suggest laying that new band layout in over the old one in the rotating images on the "home" page.
- Don - AA7AU
I may have a good deal on used large dishes and M3 transceivers for two PtP links (25 and 29 miles).
Or is this secondary allocation only for existing grandfathered installations?
In either case, is this allocation likely to be removed for Amateur Radio use in a few years?
The Federal Table lists only "RADIOLOCATION US431B G2" listed for 3300-3500MHz.
The Non-Federal Table lists no allocation, just "US103 and US342" for 3300-3450MHz.
service that were licensed (or licensed pursuant to applications accepted for filing) before
February 22, 2019 may continue to operate on a secondary basis until 180 days after the
issuance of the first flexible-use licenses in the 3.45 GHz Service. No new assignments shall be
made. In the band 3300-3500 MHz, stations in the amateur service may continue to operate on
a secondary basis until new flexible-use licenses are issued for operation in the band in which
they operate. 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. Stations
in the amateur service may continue to operate in the band 3300-3450 MHz on a secondary
basis while the band’s future uses are finalized, but stations in the amateur service may be
required to cease operations in the band 3300-3450 MHz at any time if the amateur service
causes harmful interference to flexible-use operations.
US342 Regards making assignments to protect radio astronomy use.
As far as AREDN goes, the 3.4 GHz gear is scarce, increasingly expensive, and at least one generation of wireless technology behind what the AREDN code supports today. 5 GHz gear is cheaper, faster and more available now.
Orv W6BI