Basic console window for digital output

- Probably end up making this a single tabbed dialog but this works for
the moment

src/modules/modem/analog/ModemAM.cpp

@@ -1,6 +1,6 @@
 #include "ModemAM.h"
 
-ModemAM::ModemAM() {
+ModemAM::ModemAM() : ModemAnalog() {
     demodAM = ampmodem_create(0.5, 0.0, LIQUID_AMPMODEM_DSB, 0);
 }
 

src/modules/modem/analog/ModemDSB.cpp

@@ -1,6 +1,6 @@
 #include "ModemDSB.h"
 
-ModemDSB::ModemDSB() {
+ModemDSB::ModemDSB() : ModemAnalog() {
     demodAM_DSB = ampmodem_create(0.5, 0.0, LIQUID_AMPMODEM_DSB, 1);
 }
 

src/modules/modem/analog/ModemFM.cpp

@@ -1,6 +1,6 @@
 #include "ModemFM.h"
 
-ModemFM::ModemFM() {
+ModemFM::ModemFM() : ModemAnalog() {
     demodFM = freqdem_create(0.5);
 }
 

src/modules/modem/analog/ModemLSB.cpp

@@ -1,6 +1,6 @@
 #include "ModemLSB.h"
 
-ModemLSB::ModemLSB() {
+ModemLSB::ModemLSB() : ModemAnalog() {
     // half band filter used for side-band elimination
     ssbFilt = resamp2_crcf_create(12,-0.25f,60.0f);
     demodAM_LSB = ampmodem_create(0.5, 0.0, LIQUID_AMPMODEM_LSB, 1);

src/modules/modem/analog/ModemUSB.cpp

@@ -1,6 +1,6 @@
 #include "ModemUSB.h"
 
-ModemUSB::ModemUSB() {
+ModemUSB::ModemUSB() : ModemAnalog() {
     // half band filter used for side-band elimination
     ssbFilt = resamp2_crcf_create(12,-0.25f,60.0f);
     demodAM_USB = ampmodem_create(0.5, 0.0, LIQUID_AMPMODEM_USB, 1);