diff --git a/csdr/chain/toolbox.py b/csdr/chain/toolbox.py
index d6d57f29..d92d7438 100644
--- a/csdr/chain/toolbox.py
+++ b/csdr/chain/toolbox.py
@@ -31,12 +31,11 @@ class IsmDemodulator(ServiceDemodulator, DialFrequencyReceiver):
 
 class MultimonDemodulator(ServiceDemodulator, DialFrequencyReceiver):
     def __init__(self, decoders: list[str], parser, withSquelch: bool = False):
-        self.sampleRate = 24000
+        self.sampleRate = 22050
         self.squelch = None
         self.parser = parser
         workers = [
             FmDemod(),
-            AudioResampler(self.sampleRate, 22050),
             Convert(Format.FLOAT, Format.SHORT),
             MultimonModule(decoders),
             self.parser,
diff --git a/owrx/modes.py b/owrx/modes.py
index bbb3c9db..76084d05 100644
--- a/owrx/modes.py
+++ b/owrx/modes.py
@@ -179,7 +179,7 @@ class Modes(object):
         DigitalMode(
             "page",
             "Page",
-            underlying=["nfm"],
+            underlying=["empty"],
             bandpass=Bandpass(-6000, 6000),
             requirements=["page"],
             service=True,
@@ -205,21 +205,21 @@ class Modes(object):
         DigitalMode(
             "selcall",
             "SelCall",
-            underlying=["nfm"],
+            underlying=["empty"],
             requirements=["selcall"],
             squelch=True
         ),
         DigitalMode(
             "zvei",
             "Zvei",
-            underlying=["nfm"],
+            underlying=["empty"],
             requirements=["selcall"],
             squelch=True
         ),
         DigitalMode(
             "ism",
             "ISM",
-            underlying=["nfm"],
+            underlying=["empty"],
             bandpass=Bandpass(-125000, 125000),
             requirements=["ism"],
             service=True,
@@ -228,7 +228,7 @@ class Modes(object):
         DigitalMode(
             "hfdl",
             "HFDL",
-            underlying=["usb"],
+            underlying=["empty"],
             bandpass=Bandpass(0, 3000),
             requirements=["hfdl"],
             service=True,
@@ -237,7 +237,7 @@ class Modes(object):
         DigitalMode(
             "vdl2",
             "VDL2",
-            underlying=["nfm"],
+            underlying=["empty"],
             bandpass=Bandpass(-12500, 12500),
             requirements=["vdl2"],
             service=True,
@@ -255,11 +255,12 @@ class Modes(object):
         DigitalMode(
             "adsb",
             "ADSB",
-            underlying=["nfm"],
+            underlying=["empty"],
             bandpass=Bandpass(-1200000, 1200000),
             requirements=["adsb"],
             service=True,
-            squelch=False
+            squelch=False,
+            secondaryFft=False
         ),
     ]