* Incremental Frequency Keyed + modem
- wide band, moderate speed differential MFSK signal
with offset +1.
- sample rate 16000
- symbol length 4096
- 33 tones spaced 3xSR/symlen apart approximately 398 Hz
bandwidth.
- multiple image transfer formats similar to FSQ
. Avatar (59x74 WxH pixel) image transfers
- tunable modem subcarrier (center freq)
. may be configured fixed at 1500 Hz or
. set to Psk sweet spot
- raw data received written to audit log - if enabled
- heard list entries written to heard log - if enbled
- assigned fldigi secondary RSID code, (56, 1171)
* added FSQCALL(US) compatible modem
* corrected code-page 1250 Latin-1 extended character keyboard
entry to UTF-8 strings
- correctly encodes 1250 characters 080 through 0FF using the
control + numeric keypad entry for the character
. British pound sign: control 163
* Added strformat for C-style string formatting.
* Better AFC.
* Default max image size is increased.
* Create core dump if FLDIGI_COREDUMP environment variable set.
* More comments.
* More information saved with fax images.
* More filtering of empty blank images based on correlation etc...
* Now use phasing information to stop images.
* Phase inversion flag is now constant.
* Detection of apt start on four successive lines instead of three only.
* Detection of apt stop on three successive lines instead of two only.
* Removed apt stop frequency detection (Too many false stops).
* Fixed bad proportion of sent faxes (They were vertically stretched).
* Fixed bug when displaying bin image with 100% zoom.
* Fixed race condition when sending fax with XML/RPC
* Changed max image size.
* Speed-up filter evaluation.
* Added variable threshold for binary image.
* Speed-up fax display.
* Added erosion/dilatation for fax enhancement (Experimental, disabled).
* More information when cannot load playback WAV file.
* Speedup waterfall display.
* Changed wefax AFC logic for setting frequency (Median/average).
* Removed detection of Hamburg constant frequency.
* Fixed FLTK calls made by wrong thread (XCB library).
* Fixed filenames list which was not scrollable.
* Removed dead code.
* Saves less empty images.
* Saves more information in images metadata.
* Change selected band for AFC detection.
* Changed level for APT start/stop detection. Now checks several lines.
* Fax can be saved in monochrome, takes less disk space.
* New option to reduce noise on images.
* Changed RX interface: Non-stop reception is now easier.
* Image RX starts ten lines earlier when high correlation detected.
* Experimental: Uses correlation to reduce image echo.
* Display speed-up when zoomed.
* Cleaner indeing of correlation buffer (Method at_mod).
Merger of all work submitted by Remi which was based on
3.13BY. Merge accomplished by reducing mulitple commits
to a single and then cherry-picking that commit to the
master branch. No merge conflicts were experienced.
Modified fl_digi.cxx / wefax items to comply with post
3.13BY changes.
David Freese