Free amateur radio callbook online
HamQTH (hamqth.com) scores 74 out of 100 on Brand Analyzer, placing it in the Brand-Ready tier among Media & Entertainment brands, Technology brands, Telecommunications brands, in the 40th percentile of 33731 Media & Entertainment brands.
HamQTH is a free online callbook for amateur radio operators, offering callsign lookups backed by a database of over 1.8 million entries. In addition to callsign searches, it provides tools such as DX cluster access and propagation condition information. The platform serves the global ham radio community, helping operators identify and connect with fellow enthusiasts. It operates as a non-profit resource within the amateur radio and telecommunications space.
| Brand Name | HamQTH |
|---|---|
| Domain | hamqth.com |
| Industry | Media & Entertainment, Technology |
| Main Competitors | QRZ.com (84/100), HamCall (71/100), QRZCQ (74/100), eHam.net (71/100) |
Moz Domain Authority 42/100 vs category average 51 / leader 100 - limited third-party links, so AI systems rarely encounter mentions of the brand.
Ranked #152,152 on the Tranco list of most-visited sites - modest traffic makes the brand easy for AI models to overlook.
No Wikipedia presence was found - a major gap, since Wikipedia is among the most heavily weighted sources in AI training data.
The homepage meta description reads "HamQTH is a free amateur radio callbook: look up a callsign to find the operator" (Meta description: 15 words (ideal length). OG description present and descriptive) - this is the summary AI engines are most likely to quote.
Structured data on the homepage: 1 JSON-LD block(s), Organization schema, Breadcrumb/Website schema, og:title, og:description, og:type, Twitter cards, canonical. Adding FAQ schema would further help AI crawlers parse the brand's identity.
AI-crawler access: robots.txt present, no AI bot restrictions - robots.txt controls whether engines like GPTBot and ClaudeBot can read the site at all.
Detected tech stack: Apache.
Social footprint: verified profiles on X (Twitter), Facebook, Instagram; no detected presence on LinkedIn, YouTube, GitHub - consistent profiles reinforce the brand's identity across the web.
0 Reddit mentions - community discussion signals real-world reputation to AI models.
Live results from asking a general-purpose AI assistant about the brand, checked October 2026.
When asked "What is HamQTH?", Claude could identify the brand as of October 2026. HamQTH is a free online database and callbook for amateur radio operators, letting users look up callsigns to find operator details, location, and station information. It also offers an online logbook (DX cluster integration, QSO logging) and other tools useful to ham radio enthu Best known for Free amateur radio callsign lookup database, an alternative to QRZ.com.
When asked "Best brands similar to HamQTH?", Claude would recommend HamQTH as of October 2026. It's a well-known free alternative to QRZ.com in the ham radio community, so I'd mention it if someone asked for similar callbook/logging services.
Common questions people ask in Google, ChatGPT, Claude, Gemini, Perplexity, and other AI search engines.
HamQTH's main competitors in Media & Entertainment: QRZ.com (84/100), HamCall (71/100), QRZCQ (74/100), eHam.net (71/100).
Sources: Brand Analyzer scan
HamQTH offers a free callsign lookup database containing over 1.8 million entries, along with additional tools such as DX cluster access and propagation condition information for amateur radio operators.
Sources: HamQTH official site
HamQTH is a free online callbook for amateur (ham) radio operators. It allows users to look up callsigns to identify operators and access related information, serving as a resource hub for the global amateur radio community.
Sources: HamQTH official site
HamQTH has limited AI-search visibility, scoring 27/100 on Brand Analyzer's AI visibility composite (visibility 5, trust 39, recommendation 54). This estimates how likely AI engines like ChatGPT, Claude, Gemini and Perplexity are to know, trust, and recommend the brand.
Sources: HamQTH official site
HamQTH provides a searchable database of over 1.8 million amateur radio callsigns, allowing users to look up operator information. It also offers supplementary tools such as DX cluster access and propagation condition data to support ham radio operation and communication.
Sources: HamQTH official site
HamQTH scores 54/100 on Brand Analyzer's AI recommendation signal, indicating it is reasonably likely to be surfaced when AI assistants like ChatGPT suggest Media & Entertainment options. Recommendation depends on crawlability, structured data, and category authority.
Sources: HamQTH official site
HamQTH is known for being a free, comprehensive online callbook for amateur radio operators, featuring a large database of over 1.8 million callsigns along with tools like DX cluster access and propagation condition reports.
Sources: HamQTH official site
HamQTH can improve AI discoverability by strengthening structured data (Organization and FAQ schema), maintaining an accurate Wikipedia/Wikidata entity, earning authoritative citations, and keeping content crawlable for AI bots. Brand Analyzer measures these as visibility, trust, and recommendation signals.
Sources: HamQTH official site
HamQTH is used by amateur radio (ham radio) operators and enthusiasts worldwide who want to look up callsigns, identify fellow operators, and access related radio information such as propagation conditions and DX cluster data.
Sources: HamQTH official site
HamQTH is popular among amateur radio operators because it offers free access to a large database of over 1.8 million callsigns, along with useful tools like DX cluster access and propagation condition information, making it a comprehensive and accessible resource for the global ham radio community.
Sources: HamQTH official site
HamQTH scores 27/100 for AI visibility - how well ChatGPT, Claude, Perplexity and Google AI Overviews can discover, identify and cite the brand.
HamQTH has a weak AI-visibility profile at 27/100 - a proxy for how readily ChatGPT, Perplexity and Google's AI Overviews can recognise and cite it. Its strongest area is recommendation likelihood (54/100) and its weakest is visibility (5/100). It benefits from a global traffic rank of #152,152 (Tranco), a Moz Domain Authority of 42/100 and open access for AI crawlers (GPTBot, ClaudeBot, etc.). The main gaps holding it back: no clear Wikipedia entity to anchor it in LLM training data, no strong Wikidata entry and no llms.txt to steer AI to its best pages. In a live check, Claude could already identify HamQTH from memory (October 2026) - a sign these signals are paying off.
The score combines seven dimensions - name quality, digital presence, visual identity, messaging clarity, trust foundation, AI discoverability, and brand authority - into a single objective benchmark.
Ranked closest to HamQTH: Hampstead Theatre (74/100), Hake's (74/100), Hanaholmen (74/100), Hannover 96 (74/100).
A step up - brands to learn from: Zoom (81/100), Znews (81/100).
Category leader: Change.org (97/100).
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