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Transmit FT8 using a gaussian-filtered waveform.

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Joe Taylor
2019-02-22 13:39:39 -05:00
parent 574ad38400
commit 25bfa3798a
3 changed files with 35 additions and 11 deletions
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widgets/mainwindow.cpp
+14 -1
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@@ -102,6 +102,9 @@ extern "C" {
void genft4_(char* msg, int* ichk, char* msgsent, int itone[],
fortran_charlen_t, fortran_charlen_t);
void gen_ft8wave_(int itone[], int* nsym, int* nsps, float* fsample, float* f0,
float xjunk[], float wave[], int* icmplx, int* nwave);
void gen_ft4wave_(int itone[], int* nsym, int* nsps, float* fsample, float* f0,
float wave[], int* nwave);
@@ -6861,7 +6864,17 @@ void MainWindow::transmit (double snr)
}
if (m_modeTx == "FT8") {
toneSpacing=12000.0/1920.0;
// toneSpacing=12000.0/1920.0;
toneSpacing=-3;
int nsym=79;
int nsps=4*1920;
float fsample=48000.0;
float f0=ui->TxFreqSpinBox->value() - m_XIT;
int icmplx=0;
int nwave=(nsym+2)*nsps;
gen_ft8wave_(const_cast<int *>(itone),&nsym,&nsps,&fsample,&f0,foxcom_.wave,
foxcom_.wave,&icmplx,&nwave);
if(m_config.x2ToneSpacing()) toneSpacing=2*12000.0/1920.0;
if(m_config.x4ToneSpacing()) toneSpacing=4*12000.0/1920.0;
if(SpecOp::FOX==m_config.special_op_id() and !m_tune) toneSpacing=-1;