||W4/VP9KF & G4BKI radio|
||New calculator written here?
||2020-04-01 and 2020-04-06||2021-05-031||This page
Ofcom uses ICNIRP 2020 guidelines
|Some EU†||Some EU†||n/a
Help page. Potential change from
existing ICNIRP 1998 to ICNIRP 2020 guidelines
|1985-10-08||FCC OET Bulletin 65.|
and Order, 96-326
Memorandum Opinion and
Order and Notice of Proposed Rule Making, ET Docket 93-62
|1997-08-10||FCC OET Bulletin 65 Edition 97-01.|
|1997-10-18||FCC OET Bulletin 65B Edition 97-01.|
|2007-10-21||v0.1 beta release.|
|2012-02-04||v1.0 release. First user proven release.|
2013 RF Order and Notice - (changes) terminated.
|2015-08-18||v1.2 release. Minor interface changes.|
|2018-12-07||This help page added in draft form.|
|2019-06-12||This help page expanded and updated.|
Report and Order - exemption vs. evaluation.
||FCC OET Bulletin 65 (21-01?),
re-write by FCC OET/ARRL.
||FCC OET Bulletin 65 Supplement B (21-01?) for Radio Amateurs, pending re-write by FCC OET/ARRL.|
page starts catch up with latest (pending) updates.
approval for Second Report and Order finally published in Federal
Register - final approval.
calculator v2 released. Help greatly updated.
& 2.2 released. Minor feedback tweaks from users.
|Operating Mode||Duty Factor||Note
||66% - 100%
|FSK or RTTY||100%|
|What does this mean for amateur radio? A lot,
because it's the first time that radio amateurs don't have special
exceptions or exemptions in some way. They existed because of the
almost infinite number of situations and supposed 'solutions' in most
amateur configurations. The use of a truly online calculator (or one
that says it's "online" but is downloaded and run locally in a
spreadsheet or as a local executable) simply CANNOT in any way model anything but the simplest of situations. Parodoxically, it means nothing
except for a "warm fuzzy feeling" that the FCC, Ofcom, etc. have done
something to address an oddity in the use of parts of the radio
spectrum. So, go through the motions to the best of your ability, stash
away your results and get on with things. Just hope that they don't
tighten things further in the forseeable future. Field modelling is
sophisticated and expensive in time and money. It's sad that 5G is what
triggered these changes because of exposure on 'social media' and bad
press. Before this, few people thought of RF Exposure except for cell
towers being placed at or near schools, which was mostly 'folly'.