Every released version of CSVF2, newest first. Each download is the zip exactly as it was published on that day.
| Version | Date | What changed | Size | Download |
|---|---|---|---|---|
| v3.6.3 (current) | 2026-10-17 08:00 CDT | Servers: the callsign is the account's and read-only; the Server 2.0 servers name the connecting station once per exchange in their log | 1.5 MB | Download |
| v3.6.2 | 2026-10-17 06:30 CDT | Server 2.0 fix found on the air: a second connection attempt from a station is accepted instead of refused; the first SYN+ACK is not counted as a repeat | 1.5 MB | Download |
| v3.6.1 | 2026-10-17 04:30 CDT | The exe download also has the servers as exes: CSVF2-Server, CSVF2-Server25, CSVF2-Echo and CSVF2-Web | 1.5 MB | Download |
| v3.6.0 | 2026-10-17 01:00 CDT | Server 2.0: a local-only TCP port and a browser client for other programs; echo and web servers for Server 2.0; clear messages when a location is missing | 1.5 MB | Download |
| v3.5.0 | 2026-10-16 23:00 CDT | A location is required to transmit (privacy policy 6); every tab scrolls on small screens; receiving no longer freezes slow computers | 1.5 MB | Download |
| v3.4.5 | 2026-10-16 21:15 CDT | Fix: the exe had no working sound ("install sounddevice"); the message now shows the real error | 1.5 MB | Download |
| v3.4.4 | 2026-10-16 20:30 CDT | The exe build updates itself (download, checksum, restart); the update box says so when files were already current | 1.5 MB | Download |
| v3.4.3 | 2026-10-16 19:10 CDT | exe: icon built into CSVF2.exe, starts correctly from a shortcut; small code clean-ups | 1.5 MB | Download |
| v3.4.2 | 2026-10-15 19:36 CDT | Author credit corrected to Reed Gabriel (KE9GDP) | 1.5 MB | Download |
| v3.4.1 | 2026-10-15 17:30 CDT | Licence CC BY-NC-SA 4.0 with a visible credit in the program; version and build time stamp shown in the window; fixes the version number the updater compares | 1.5 MB | Download |
| v3.4 | 2026-10-15 | Three ways to use it: Python, C and exe; the callsign is locked to the account | 1.5 MB | Download |
| v3.3.2 | 2026-10-12 | Fix: tutorial boxes cut off the screen; the window fits the screen; "grid square" wording | 1.5 MB | Download |
| v3.3.1 | 2026-10-12 | Fix: the tutorial follows the window (move, maximize, full screen); licence upload accepts any file | 1.5 MB | Download |
| v3.3 | 2026-10-12 | ke9gdp.com accounts (licence reviewed by hand), Feedback chat, privacy policy 5 | 1.5 MB | Download |
| v3.2 | 2026-10-12 | Server 2.0: TCP-style connections (NOT tested over the air yet); server types on the map | 1.5 MB | Download |
| v3.1 | 2026-10-12 | Radio time-out can be turned off (0); speed list ordered fastest to slowest | 1.5 MB | Download |
| v3.0.1 | 2026-10-11 | Fix: the taskbar icon when started by double-clicking CSVF2.pyw | 1.5 MB | Download |
| v3.0 | 2026-10-11 | Compression (lossless and lossy) for text and files; Slowest speed; Send callsign follows the chosen speed | 1.5 MB | Download |
| v2.9 | 2026-10-11 | Slow and Super slow speeds for rough conditions | 1.4 MB | Download |
| v2.8 | 2026-10-11 | direct messages, map keeps earlier positions | 1.4 MB | Download |
| v2.7 | 2026-10-11 | new callsign mechanics, location + map, feedback, notifications, protocol page | 1.4 MB | Download |
| v2.6 | 2026-10-11 | Extra extra extra fast (new), old modes behind a warning, CSVF2.pyw launcher | 1.4 MB | Download |
| v2.5 | 2026-10-10 | privacy policy + public users list, updater | 1.4 MB | Download |
| v2.4.1 | 2026-10-10 | receiver fixes found over the air, new biggest-file record | 1.4 MB | Download |
| v2.4 | 2026-10-10 | error correction, Extra extra fast, Auto callsign, Settings tab | 1.4 MB | Download |
| v2.3 | 2026-10-10 | Amplitude extra fast (files experimental), second shift layer, no file size limits | 1.4 MB | Download |
| v2.2 | 2026-10-04 | Send callsign button with a 10-minute timer; faster website.wav | 1.4 MB | Download |
| v2.1 | 2026-10-03 | callsign in Morse code; sensitivity slider down to 1% | 1.4 MB | Download |
| v2.0 | 2026-09-26 | radio time-out setting sizes the bursts; long runs scrambled | 1.4 MB | Download |
| v1.9 | 2026-09-26 | Extra fast speed (two tones at once), 100,000-byte files at Extra fast | 1.4 MB | Download |
| v1.8 | 2026-09-22 | radio_server_25.py gains a "google" path (DuckDuckGo search + fetch) | 1.4 MB | Download |
| v1.7 | 2026-09-21 | radio_server_25.py gains chatgpt/smpost/smget, now public | 1.4 MB | Download |
| v1.6 | 2026-09-21 | path "document" now replies with document.txt's text, not a file | 1.4 MB | Download |
| v1.5 | 2026-09-21 | radio_server.py renamed to radio_server_template.py; path "document" replies with document.txt | 1.4 MB | Download |
| v1.4 | 2026-09-21 | Server tab (path + end tone) and end-tone-driven server replies | 1.4 MB | Download |
| v1.3 | 2026-09-21 | automatic ping/pong server and receiver sensitivity | 1.4 MB | Download |
| v1.2 | 2026-09-20 | VOX keying tone can be switched off | 1.3 MB | Download |
| v1.1 | 2026-09-20 | bursts and VOX keying tone for radios with a time-out | 1.3 MB | Download |
| v1.0 | 2026-09-20 | First release: text over a voice radio as audio tones, with a spoken callsign | 1.3 MB | Download |
The newest version is on the CSVF2 page and the program can update itself (from v2.5). Older versions are kept for reference and for stations that need to match an older receiver; they are not updated or supported. Versions before v2.5 never ask to be updated. A frame from a newer version may be reported as lost by an older receiver, see the protocol specification (section 14, versions and compatibility).