Category Archives: Microwave

ARRL Issues a call to action in defense of Part 97 Allocations in the 3 and 5 GHz Bands

FCC WT Docket 19-348, issued on December 16 th , says:

“This NPRM proposes to remove the existing non-federal secondary radiolocation and amateur allocations in the 3.3-3.55 GHz band and to relocate incumbent non-federal operations out of the band and seeks comment on appropriate transition mechanisms.”

If adopted, this NPRM will severely curtail growth of one of the newest and most effective means for Amateurs to support emergency communications, that is ham, radio networking. 

Existing installations will be severely curtailed or, with no reasonable alternatives, be forced to cease operations.  Thousands of hams have built or are in the process of constructing high-speed data networks using, in part the 3 GHz ham microwave allocations.

You are urged to file your comment in opposition to this NPRM. A simple comment opposing the NPRM can be filed at https://www.fcc.gov/ecfs/search/filings?proceedings_name=19-
348&sort=date_disseminated,DESC

Detailed instructions on how to submit an effective comment can be found at https://www.arednmesh.org/content/templates-submit-comments-3-ghz-fcc-docket-19-348

Because the 3 GHz amateur allocation is not shared with any other service, it’s become a very effective method of implementing high performance “backbone” links on the ham radio network. I urge all hams, whether on the ham mesh network or not, to submit a comment opposing this NPRM.

There are instructions at the URL mentioned above detailing how an agency can file a comment in opposition to this NPRM. If as part of your ham radio support for emergency services you work closely with such an agency, please encourage them to file a comment.

To make matters worse, the FCC has opened WT Docket 19-138, which states:

“The FCC adopted a NPRM that takes a fresh and comprehensive look at the rules for the 5.9 GHz band and proposes, among other things, to make the band’s lower 45 MHz available for unlicensed operations and to permit C-V2X) in the upper 20 MHz”

If you look at the ham radio allocation in the 5 GHz band, you can see that the FCC’s intention to convert that chunk of bandwidth to unlicensed operation directly impacts the prime spot for ham radio networking, for both user access and backbone links.

Please consider submitting comments in opposition to these NPRMs. If they both are implemented

The last day to submit comments is February 15th.

ARRL Asks FCC to Protect Amateur Radio Millimeter-Wave Bands

ARRL has asked the FCC to avoid authorizing developmental technologies in two Amateur Radio bands above 95 GHz that some radio amateurs may not be unaware of. The ARRL commented on May 2 in response to a Notice of Proposed Rule Making and Order (NPRM&O) in ET Docket 18-21, released in February. The so-called “Spectrum Horizons” proceeding seeks to make the bands above 95 GHz “more readily accessible for new innovative services and technologies.” ARRL said that, while it agrees that “regulatory flexibility is justified” in the millimeter-wave bands above 95 GHz, due to the extensive frequency re-use possibilities, the FCC ought to make two primary Amateur/Amateur Radio Satellite bands in that part of the spectrum unavailable for deployment of unlicensed Part 15 or Part 5 Experimental Spectrum Horizons devices. Amateur Radio has primary allocation status in the bands 134 – 136 GHz and 248 – 250 GHz, both shared with the Radio Astronomy Service, which is secondary.

Continue reading ARRL Asks FCC to Protect Amateur Radio Millimeter-Wave Bands

New UK distance record on 134 GHz

Southgate Amateur Radio News
January 17, 2016

Ian Lamb G8KQW and John Hazell G8ACE are very pleased to report a successful 134GHz CW contact which extended the existing UK 134GHz distance record to 35.6km on Saturday 16th January 2016.

This exceptional contact was made over a Line Of Sight (LOS) path from Chute Causeway (IO91FH20DP) near Andover to Cheesefoot Head (IO91JB00NV) near Winchester.

Continue reading New UK distance record on 134 GHz