use frequency input for the other inputs, too

owrx/form/__init__.py

@@ -322,8 +322,8 @@ class ModesInput(DropdownInput):
 
 
 class FrequencyInput(Input):
-    def __init__(self, id, label):
-        super().__init__(id, label)
+    def __init__(self, id, label, infotext=None):
+        super().__init__(id, label, infotext=infotext)
 
     def defaultConverter(self):
         return IntConverter()
@@ -337,7 +337,7 @@ class FrequencyInput(Input):
     def render_input(self, value):
         append = """
             <div class="input-group-append">
-                <select class="input-group-text frequency-exponent" name="{id}-exponent">
+                <select class="input-group-text frequency-exponent" name="{id}-exponent" {disabled}>
                     <option value="0" selected>Hz</option>
                     <option value="3">kHz</option>
                     <option value="6">MHz</option>
@@ -347,6 +347,7 @@ class FrequencyInput(Input):
             </div>
         """.format(
             id=self.id,
+            disabled="disabled" if self.disabled else "",
         )
 
         return """

owrx/source/__init__.py

@@ -494,10 +494,9 @@ class SdrDeviceDescription(object):
                 "services",
                 "Run background services on this device",
             ),
-            NumberInput(
+            FrequencyInput(
                 "lfo_offset",
                 "Oscilator offset",
-                append="Hz",
                 infotext="Use this when the actual receiving frequency differs from the frequency to be tuned on the"
                 + " device. <br/> Formula: Center frequency + oscillator offset = sdr tune frequency",
             ),
@@ -505,7 +504,7 @@ class SdrDeviceDescription(object):
             SchedulerInput("scheduler", "Scheduler"),
             FrequencyInput("center_freq", "Center frequency"),
             NumberInput("samp_rate", "Sample rate", append="S/s"),
-            NumberInput("start_freq", "Initial frequency", append="Hz"),
+            FrequencyInput("start_freq", "Initial frequency"),
             ModesInput("start_mod", "Initial modulation"),
             NumberInput("initial_squelch_level", "Initial squelch level", append="dBFS"),
         ]