* Add Dnd Image to TX panel
- applies to MFSK, IFKP and THOR image transfers
- allows operator to insert image processing into TX text stream
- drag-drop image from system file viewer to TX text panel
- updated specific modem documentation
* GCC 6 defaults to -std=gnu++14, and attempting to build fldigi fails
with a number of errors. One is that C++11 added std::next and so
because of the "using namespace std" in src/fsq/fsq.cxx the global
variable 'next' and std::next are ambiguous. That can be easily solved
by qualifying ::next or adding using ::next at function scope.
* The other errors are due to the different return type for
std::complex<T>::real() and std::complex<T>::imag() in C++11 and
later.
* add image transfer to thor based on IFKP image processing
- supported by THOR-11, THOR-16 and THOR-22
- image modes are identical to IFKP images, fixed sizes
and avatar.
* 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)
David Freese