Signal Coverage is the share (or raw count) of the position-tracking topical terms that a draft actually uses — how much of the tracked vocabulary from the ranking field the page has picked up.
| Term | Signal Coverage |
|---|---|
| Category | Content and Topical Relevance |
| Also known as | Position-Tracking Term Coverage |
| Where it appears | BM25 Drafts |
What it means in RankGear
Signal Coverage lives in BM25 Drafts. For a target query, RankGear assembles a set of position-tracking terms drawn from the pages already ranking, then checks how many of those terms your working draft contains. The result is Signal Coverage: a measure of how much of the tracked vocabulary the draft has actually earned, expressed as a proportion of the tracked set or as a running count. It describes the overlap between your text and the field’s shared language — nothing more, and it does not claim your page will rank.
How to interpret it
Read Signal Coverage as a gap finder, not a target to max out. High coverage means the draft touches most of the terms competitors use around this topic; low coverage points to vocabulary the ranking field returns to that your draft has skipped — often entities, question phrasings, or supporting concepts rather than the head phrase. Treat a missing term as a prompt to check whether the underlying idea belongs in the piece, then add genuinely useful material that happens to use it. Chasing a coverage number by sprinkling terms works against you; the point is to close real topical gaps against relevant competitors.
| Coverage reading | What it tells you |
|---|---|
| High share of tracked terms present | The draft speaks most of the field’s shared vocabulary; look for depth and quality next. |
| Low share of tracked terms present | Likely missing entities, sub-questions, or supporting concepts the ranking pages repeat. |
Example
A draft targeting “commercial roof coating” covers the head phrase and its own warranty language, and Signal Coverage reports 12 of 20 tracked terms present. The eight it is missing are not synonyms of the main phrase — they are supporting ideas the ranking field keeps raising: silicone versus acrylic systems, reflectivity and SRI, ponding water, and elastomeric membranes. Coverage surfaces those four concepts so the writer can decide which genuinely belong, rather than leaving obvious topical gaps unaddressed.
Important considerations
- Coverage measures vocabulary overlap with the ranking field, not ranking itself — correlation is not causation, and hitting more terms does not make a page rank.
- The tracked terms are comparative indicators pulled from competing pages, not Google scores or guaranteed relevance signals.
- Any wording you add to raise coverage should preserve the searcher’s intent; repetition, term stuffing, and unsupported claims do not build topical authority.
- Not every missing term deserves inclusion — skip ones that would force irrelevant material into the draft, and prioritise gaps that add real value for the reader.
Related terms
Part of the RankGear glossary · how RankGear measures · the 870 factors.