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HamCalc - Free Antenna Design Calculators for Amateur Radio — 18 websites ranked by shared content topics, category and on-page relevance.

Each result shows its full tech stack, contacts and AI-policy — not just a name · Browse all sites in Technology And Computing →

Domain	Match	Title	Country/Lang	Category	AI files	Contact	AI-protection
n6ach.com ↗	74 match 1 shared topics	Ham Radio Antenna Calculators \| N6ACH Antenna Tools	en	technology-and-computing	robotsllmsaihumans	emailphone	none
n3ujj.com ↗	69 match 1 shared topics	Website of Amateur Radio Operator N3UJJ	en	technology-and-computing	robotsllmsaihumans	emailphone	none
allcalc.tech ↗	69 match 1 shared topics	Free Online Calculators — Tools for Creators, Developers & More \| AllCalc	en	technology-and-computing	robotsllmsaihumans	emailphone	none
meanabsolutedeviationcalculator.com ↗	68 match 1 shared topics	Mean Absolute Deviation Calculator	en	technology-and-computing	robotsllmsaihumans	emailphone	none
theappproject.com ↗	68 match 1 shared topics	Plusly: The Calculator for Apple Watch	en	technology-and-computing	robotsllmsaihumans	emailphone	none
mytempos.com ↗	68 match 1 shared topics	MyTempos — Free Date & Time Calculators	en	technology-and-computing	robotsllmsaihumans	emailphone	none
decimaltools.com ↗	67 match 1 shared topics	Free Decimal Converter & Calculator \| DecimalTools	en	technology-and-computing	robots llmsaihumans	emailphone	none
actionscost.today ↗	67 match 1 shared topics	GitHub Actions Cost Calculator - Free CI/CD Spending Receipt Generator \| ActionsCost	en	technology-and-computing	robotsllmsaihumans	emailphone	partial · 8
decimaltohex.com ↗	66 match 1 shared topics	Decimal to Hex — Free Converter & Calculator	en	technology-and-computing	robotsllmsaihumans	emailphone	partial · 1
abtesting.tools ↗	66 match 1 shared topics	Conversions A/B test calculator — Z-test, Chi-square & Fisher	en	technology-and-computing	robotsllmsaihumans	emailphone	none
rehamradio.com ↗	66 match 1 shared topics	reHamRadio	en	technology-and-computing HubSpot	robotsllmsaihumans	emailphone	none
3utils.com ↗	66 match 1 shared topics	3Utils - Free Online Tools	en	technology-and-computing	robotsllmsaihumans	emailphone	none
keepcalculator.com ↗	66 match 1 shared topics	Keep Calculator	en	technology-and-computing	robotsllmsaihumans	emailphone	none
whizbangtools.com ↗	66 match 1 shared topics	Free Online Tools for Engineers & Creators \| Whiz Bang Tools	en	technology-and-computing WordPress WooCommerce	robotsllmsaihumans	emailphone	none
alphacalculator.org ↗	66 match 1 shared topics	Alpha Calculator	en	technology-and-computing	robotsllmsaihumans	emailphone	none
giantstork.com ↗	66 match 1 shared topics	Giantstork \| Free Online Tools for Everyday Tasks	en	technology-and-computing	robotsllmsaihumans	emailphone	none
whattimewasit.app ↗	66 match 1 shared topics	What time was it? - Time calculator for past and future	en	technology-and-computing	robotsllmsaihumans	emailphone	none
rendercalculator.com ↗	66 match 1 shared topics	Render Calculator	en	technology-and-computing	robotsllmsaihumans	emailphone	none

How the match score works

Each match is a 0–100 similarity score — the higher it is, the more two sites resemble one another. It’s computed automatically from our own crawl data (never from what a site says about itself) by combining several independent signals, so a high score means several of them point the same way:

shared topics how many of the same fine‑grained content topics (IAB sub‑categories) both sites cover — the main signal.
same category whether they sit in the same business / industry category.
content & title how closely their titles and page descriptions line up in wording and meaning.

No single signal decides the result — they’re blended together. Treat the score as a way to rank candidates rather than an absolute percentage; the chips on each result show which signals contributed.