Purpose and scope
The CW Abbreviation Finder is a bilingual reference and listening tool for routine QSO shorthand, Q signals, linked prosigns, formal traffic terms, station language, and selected historical expressions. Each entry has a stable page anchor, meaning, Morse pattern, usage label, context note, and source scope.
It uses the same shared dark Morse Lab background and panel colors as the other six tools. On desktop, the shared Morse-tool buttons stay in the left column and the abbreviation search, listening controls, and catalog occupy the right column. On narrower screens, the selector moves above the content for touch-friendly use.
The complete catalog remains on one indexable page. Category and usage filters make the list manageable without creating thin or duplicate pages for every abbreviation.
Search and filters
- Type an abbreviation, alias, Morse pattern, English or Chinese meaning, or explanatory word.
- Optionally narrow the result by category or usage level.
- The result count updates immediately. Clear filters restores the complete list.
- If there is no result, shorten the search, choose another filter, or clear the filters.
- Copy or bookmark an entry anchor such as
#qthor#prosign-skwhen you need a stable reference.
Labels distinguish core, common, specialized, legacy, and slang usage. They describe practical scope, not a universal regulatory rank.
Single-item audio
Press Play on an entry to hear locally synthesized Morse at the selected WPM and tone. Ordinary abbreviations use the normal three-unit character gap. Linked prosigns such as <SK> send all component letters as one continuous character with only one-unit element gaps.
Default settings are 20 WPM and 650 Hz. Speed changes time; tone changes pitch only. Starting another item stops the current item.
Continuous Listening Practice
Start Ear Training builds a shuffled bag from the current search and filter results. Every eligible item plays once in a round before the bag reshuffles. The first item of a new round is kept different from the previous item when at least two entries are available.
- Pause stops the current tone and preserves the filtered pool; Resume continues with the next queued item.
- Stop clears the current round and returns to the ready state.
- Changing a filter while running immediately rebuilds the queue from the new result set.
- Show text hides or reveals the current abbreviation, meaning, and Morse pattern. It does not change the audio.
- A newer Play request replaces any older request still waiting for browser audio to resume, so only the latest selected item is scheduled.
- The advanced controls share WPM and tone with single playback and set the fixed gap between entries.
Audio recovery and limitations
Web Audio starts only after a deliberate button press. If a browser suspends or interrupts sound after the page is hidden or another app uses audio, the tool attempts to resume the audio context on the next Play or Resume action. If audio is blocked, try the button again and check the tab, browser, and operating-system audio settings.
The text reference remains usable when Web Audio is unavailable. The synthesizer models standard timing but does not reproduce fading, keying imperfections, Farnsworth spacing, or an individual operator’s fist. Meanings and procedures can vary by service, country, network, and era; read each context note before on-air use.
Privacy and stored settings
Search, filtering, shuffle selection, and sound synthesis run in the browser. Search terms and practice contents are not uploaded or saved by CW599. WPM, tone, gap, and Show text preference may be stored in browser local storage so they remain available on the next visit. Clearing site data removes those preferences.
Versions and archives
v1.1 aligns the narrow-screen content gutter with the site header, without changing search, filters, local audio, or stored preferences. v1.0 introduced the bilingual server-rendered catalog, live search and filters, stable anchors, local Web Audio playback, linked-prosign timing, and shuffled continuous listening practice. Source history and archived behavior are retained in Git and deployment backups.
Version archive
When a retired release has a runnable snapshot, this list will link both its documentation and the archived tool. Earlier releases without a snapshot are explicitly marked documentation only.