airband freq scan remains in picks 1st/2nd half

am_fix.c

@@ -104,10 +104,10 @@ static const t_gain_table gain_table[] =
 	{0x005E, -50},         //   1 .. 0 2 3 6 .. -33dB -14dB  0dB  -3dB .. -50dB
 	{0x015E, -47},         //   2 .. 1 2 3 6 .. -30dB -14dB  0dB  -3dB .. -47dB
 	{0x025E, -41},         //   3 .. 2 2 3 6 .. -24dB -14dB  0dB  -3dB .. -41dB
-	{0x035E, -17}          //   4 .. 3 2 3 6 ..   0dB -14dB  0dB  -3dB .. -17dB original
+	{0x035E, -17}          //   4 .. 3 2 3 6 ..   0dB -14dB  0dB  -3dB .. -17dB
 };
 
-static const unsigned int original_index = 3;
+static const unsigned int original_index = 0;
 
 #else
 	{0x0000, -98},         //   1 .. 0 0 0 0 .. -33dB -24dB -8dB -33dB .. -98dB

app/app.c

@@ -647,11 +647,19 @@ void APP_stop_scan(void)
 
 static void APP_next_freq(void)
 {
-	uint32_t               freq  = g_rx_vfo->freq_config_rx.frequency;
-	const uint32_t         step  = g_rx_vfo->step_freq;
+	uint32_t               freq  = g_tx_vfo->freq_config_rx.frequency;
+	const uint32_t         step  = g_tx_vfo->step_freq;
 	const frequency_band_t band  = FREQUENCY_GetBand(freq);
-	const uint32_t         upper = FREQ_BAND_TABLE[band].upper;
-	const uint32_t         lower = FREQ_BAND_TABLE[band].lower;
+	uint32_t               upper = FREQ_BAND_TABLE[band].upper;
+	uint32_t               lower = FREQ_BAND_TABLE[band].lower;
+
+	if (band == BAND2_108MHz)
+	{	// air band
+		if (freq < 11800000)
+			upper = 11800000;  // lower airband half
+		else
+			lower = 11800000;  // upper airband half
+	}
 
 	#ifdef ENABLE_SCAN_IGNORE_LIST
 		do {
@@ -671,9 +679,9 @@ static void APP_next_freq(void)
 		} while (FI_freq_ignored(freq) >= 0);
 	#endif
 
-	g_rx_vfo->freq_in_channel = 0xff;
+	g_tx_vfo->freq_in_channel = 0xff;
 
-	g_rx_vfo->freq_config_rx.frequency = freq;
+	g_tx_vfo->freq_config_rx.frequency = freq;
 
 	#if defined(ENABLE_UART) && defined(ENABLE_UART_DEBUG)
 //		UART_printf("APP_next_freq %u %u\r\n", freq, new_band);
@@ -682,8 +690,8 @@ static void APP_next_freq(void)
 	#if 0
 		// original slower method
 
-		RADIO_ApplyOffset(g_rx_vfo, false);
-		RADIO_ConfigureSquelchAndOutputPower(g_rx_vfo);
+		RADIO_ApplyOffset(g_tx_vfo, false);
+		RADIO_ConfigureSquelchAndOutputPower(g_tx_vfo);
 
 		RADIO_setup_registers(true);
 
@@ -696,10 +704,11 @@ static void APP_next_freq(void)
 	#else
 		// don't need to go through all the other stuff .. speed things up !!
 
-//		RADIO_ApplyOffset(g_rx_vfo, false);
+		BK4819_set_rf_frequency(g_tx_vfo->freq_config_rx.frequency, true);
+		BK4819_set_rf_filter_path(g_tx_vfo->freq_config_rx.frequency);
 
-		BK4819_set_rf_frequency(g_rx_vfo->freq_config_rx.frequency, true);
-		BK4819_set_rf_filter_path(g_rx_vfo->freq_config_rx.frequency);
+		RADIO_ApplyOffset(g_tx_vfo, false);
+		RADIO_ConfigureSquelchAndOutputPower(g_tx_vfo);
 
 		#ifdef ENABLE_FASTER_CHANNEL_SCAN
 			//g_scan_pause_tick_10ms = 10;   // 100ms

app/main.c

@@ -1004,8 +1004,16 @@ void MAIN_Key_UP_DOWN(bool key_pressed, bool key_held, scan_state_dir_t directio
 				uint32_t               freq  = g_tx_vfo->freq_config_rx.frequency;
 				const uint32_t         step  = g_tx_vfo->step_freq;
 				const frequency_band_t band  = FREQUENCY_GetBand(freq);
-				const uint32_t         upper = FREQ_BAND_TABLE[band].upper;
-				const uint32_t         lower = FREQ_BAND_TABLE[band].lower;
+				uint32_t               upper = FREQ_BAND_TABLE[band].upper;
+				uint32_t               lower = FREQ_BAND_TABLE[band].lower;
+
+				if (band == BAND2_108MHz)
+				{	// air band
+					if (freq < 11800000)
+						upper = 11800000;  // lower airband half
+					else
+						lower = 11800000;  // upper airband half
+				}
 
 				freq += step * direction;
 
@@ -1015,7 +1023,7 @@ void MAIN_Key_UP_DOWN(bool key_pressed, bool key_held, scan_state_dir_t directio
 				while (freq < lower)
 					freq += upper - lower;
 
-				if (band == BAND2_108MHz)  // air band uses set channels. so round to those channels
+				if (band == BAND2_108MHz)  // air band uses set channels
 					freq = lower + ((((freq - lower) + (step / 2)) / step) * step);
 
 				if (FREQUENCY_rx_freq_check(freq) < 0)
@@ -1026,8 +1034,6 @@ void MAIN_Key_UP_DOWN(bool key_pressed, bool key_held, scan_state_dir_t directio
 
 				g_tx_vfo->freq_config_rx.frequency = freq;
 
-				RADIO_ApplyOffset(g_tx_vfo, false);
-
 				// find the first channel that contains this frequency .. currently takes too long
 				//
 				//if (!key_held && key_pressed)
@@ -1037,6 +1043,9 @@ void MAIN_Key_UP_DOWN(bool key_pressed, bool key_held, scan_state_dir_t directio
 					g_tx_vfo->freq_in_channel = 0xff;
 
 				#if 0
+					RADIO_ApplyOffset(g_tx_vfo, false);
+					RADIO_ConfigureSquelchAndOutputPower(g_tx_vfo);
+
 					// original slow method
 					g_request_save_channel = 1;
 				#else
@@ -1053,12 +1062,14 @@ void MAIN_Key_UP_DOWN(bool key_pressed, bool key_held, scan_state_dir_t directio
 							g_manual_scanning = true;
 							g_monitor_enabled = true;
 							GPIO_SetBit(&GPIOC->DATA, GPIOC_PIN_SPEAKER);
-//							APP_start_listening();
 						}
 					#endif
 
 					BK4819_set_rf_frequency(freq, true);  // set the VCO/PLL
 					BK4819_set_rf_filter_path(freq);      // set the proper LNA/PA filter path
+
+					RADIO_ApplyOffset(g_tx_vfo, false);
+					RADIO_ConfigureSquelchAndOutputPower(g_tx_vfo);
 				#endif
 
 				return;