diff --git a/csdr/chain/dumphfdl.py b/csdr/chain/dumphfdl.py
new file mode 100644
index 00000000..8c7b08f7
--- /dev/null
+++ b/csdr/chain/dumphfdl.py
@@ -0,0 +1,14 @@
+from csdr.chain.demodulator import ServiceDemodulator
+from owrx.hfdl.dumphfdl import DumpHFDLModule
+from csdr.module import JsonParser
+
+
+class DumpHFDL(ServiceDemodulator):
+    def __init__(self):
+        super().__init__([
+            DumpHFDLModule(),
+            JsonParser("HFDL"),
+        ])
+
+    def getFixedAudioRate(self) -> int:
+        return 12000
diff --git a/csdr/chain/rtl433.py b/csdr/chain/rtl433.py
index 6b9f5704..f1f95341 100644
--- a/csdr/chain/rtl433.py
+++ b/csdr/chain/rtl433.py
@@ -1,4 +1,5 @@
-from owrx.ism.rtl433 import Rtl433Module, JsonParser
+from csdr.module import JsonParser
+from owrx.ism.rtl433 import Rtl433Module
 from csdr.chain.demodulator import ServiceDemodulator
 
 
@@ -10,6 +11,6 @@ class Rtl433(ServiceDemodulator):
         super().__init__(
             [
                 Rtl433Module(),
-                JsonParser(),
+                JsonParser("ISM"),
             ]
         )
diff --git a/csdr/module/__init__.py b/csdr/module/__init__.py
index 3ee0d0ec..df79e8ed 100644
--- a/csdr/module/__init__.py
+++ b/csdr/module/__init__.py
@@ -8,6 +8,9 @@ from subprocess import Popen, PIPE
 from functools import partial
 import pickle
 import logging
+import json
+
+logger = logging.getLogger(__name__)
 
 
 class Module(BaseModule, metaclass=ABCMeta):
@@ -146,6 +149,21 @@ class LineBasedModule(ThreadModule, metaclass=ABCMeta):
         pass
 
 
+class JsonParser(LineBasedModule):
+    def __init__(self, mode: str):
+        self.mode = mode
+        super().__init__()
+
+    def process(self, line):
+        try:
+            msg = json.loads(line.decode())
+            msg["mode"] = self.mode
+            logger.debug(msg)
+            return msg
+        except json.JSONDecodeError:
+            logger.exception("error parsing rtl433 json")
+
+
 class PopenModule(AutoStartModule, metaclass=ABCMeta):
     def __init__(self):
         self.process = None
diff --git a/htdocs/index.html b/htdocs/index.html
index 8a9b3535..960e5c96 100644
--- a/htdocs/index.html
+++ b/htdocs/index.html
@@ -76,6 +76,7 @@
                 <div class="openwebrx-panel openwebrx-message-panel" id="openwebrx-panel-pocsag-message" style="display: none; width: 619px;" data-panel-name="pocsag-message"></div>
                 <div class="openwebrx-panel openwebrx-message-panel" id="openwebrx-panel-adsb-message" style="display: none; width: 619px;" data-panel-name="adsb-message"></div>
                 <div class="openwebrx-panel openwebrx-message-panel" id="openwebrx-panel-ism-message" style="display: none; width: 619px;" data-panel-name="ism-message"></div>
+                <div class="openwebrx-panel openwebrx-message-panel" id="openwebrx-panel-hfdl-message" style="display: none; width: 619px;" data-panel-name="hfdl-message"></div>
                 <div class="openwebrx-panel openwebrx-meta-panel" id="openwebrx-panel-metadata-m17" style="display: none;" data-panel-name="metadata-m17">
                     <div class="openwebrx-meta-slot">
                         <div class="openwebrx-meta-user-image">
diff --git a/htdocs/lib/DemodulatorPanel.js b/htdocs/lib/DemodulatorPanel.js
index 0ae61904..ae040d2d 100644
--- a/htdocs/lib/DemodulatorPanel.js
+++ b/htdocs/lib/DemodulatorPanel.js
@@ -164,8 +164,10 @@ DemodulatorPanel.prototype.updatePanels = function() {
     $('#openwebrx-panel-digimodes').attr('data-mode', modulation);
     var mode = Modes.findByModulation(modulation);
     toggle_panel("openwebrx-panel-digimodes", modulation && (!mode || mode.secondaryFft));
+    // WSJT-X modes share the same panel
     toggle_panel("openwebrx-panel-wsjt-message", ['ft8', 'wspr', 'jt65', 'jt9', 'ft4', 'fst4', 'fst4w', "q65", "msk144"].indexOf(modulation) >= 0);
-    ['js8', 'packet', 'pocsag', 'adsb', 'ism'].forEach(function(m) {
+    // these modes come with their own
+    ['js8', 'packet', 'pocsag', 'adsb', 'ism', 'hfdl'].forEach(function(m) {
         toggle_panel('openwebrx-panel-' + m + '-message', modulation === m);
     });
 
diff --git a/htdocs/lib/MessagePanel.js b/htdocs/lib/MessagePanel.js
index e1f71629..b2d4ae47 100644
--- a/htdocs/lib/MessagePanel.js
+++ b/htdocs/lib/MessagePanel.js
@@ -460,4 +460,40 @@ $.fn.ismMessagePanel = function() {
         this.data('panel', new IsmMessagePanel(this));
     }
     return this.data('panel');
+};
+
+HfdlMessagePanel = function(el) {
+    MessagePanel.call(this, el);
+    this.initClearTimer();
+}
+
+HfdlMessagePanel.prototype = new MessagePanel();
+
+HfdlMessagePanel.prototype.render = function() {
+    $(this.el).append($(
+        '<table>' +
+            '<thead><tr>' +
+                '<th class="model">Model</th>' +
+                '<th class="id">ID</th>' +
+                '<th class="channel">Channel</th>' +
+                '<th class="data">Data</th>' +
+            '</tr></thead>' +
+            '<tbody></tbody>' +
+        '</table>'
+    ));
+};
+
+HfdlMessagePanel.prototype.supportsMessage = function(message) {
+    return message['mode'] === 'HFDL';
+};
+
+HfdlMessagePanel.prototype.pushMessage = function(message) {
+    console.info(message);
+};
+
+$.fn.hfdlMessagePanel = function() {
+    if (!this.data('panel')) {
+        this.data('panel', new HfdlMessagePanel(this));
+    }
+    return this.data('panel');
 };
\ No newline at end of file
diff --git a/htdocs/openwebrx.js b/htdocs/openwebrx.js
index 52a403f8..fa5ffdee 100644
--- a/htdocs/openwebrx.js
+++ b/htdocs/openwebrx.js
@@ -859,14 +859,10 @@ function on_ws_recv(evt) {
                         break;
                     case 'secondary_demod':
                         var value = json['value'];
-                        var panels = [
-                            $("#openwebrx-panel-wsjt-message").wsjtMessagePanel(),
-                            $('#openwebrx-panel-packet-message').packetMessagePanel(),
-                            $('#openwebrx-panel-pocsag-message').pocsagMessagePanel(),
-                            $('#openwebrx-panel-adsb-message').adsbMessagePanel(),
-                            $('#openwebrx-panel-ism-message').ismMessagePanel(),
-                            $("#openwebrx-panel-js8-message").js8()
-                        ];
+                        var panels = ['wsjt', 'packet', 'pocsag', 'adsb', 'ism', 'hfdl'].map(function(id) {
+                            return $('#openwebrx-panel-' + id + '-message')[id + 'MessagePanel']();
+                        });
+                        panels.push($('#openwebrx-panel-js8-message').js8());
                         if (!panels.some(function(panel) {
                             if (!panel.supportsMessage(value)) return false;
                             panel.pushMessage(value);
@@ -1467,11 +1463,9 @@ function secondary_demod_init() {
         .mousedown(secondary_demod_canvas_container_mousedown)
         .mouseenter(secondary_demod_canvas_container_mousein)
         .mouseleave(secondary_demod_canvas_container_mouseleave);
-    $('#openwebrx-panel-wsjt-message').wsjtMessagePanel();
-    $('#openwebrx-panel-packet-message').packetMessagePanel();
-    $('#openwebrx-panel-pocsag-message').pocsagMessagePanel();
-    $('#openwebrx-panel-adsb-message').adsbMessagePanel();
-    $('#openwebrx-panel-ism-message').ismMessagePanel();
+    ['wsjt', 'packet', 'pocsag', 'adsb', 'ism', 'hfdl'].forEach(function(id){
+        $('#openwebrx-panel-' + id + '-message')[id + 'MessagePanel']();
+    })
     $('#openwebrx-panel-js8-message').js8();
 }
 
diff --git a/owrx/dsp.py b/owrx/dsp.py
index 8645e622..175703c2 100644
--- a/owrx/dsp.py
+++ b/owrx/dsp.py
@@ -624,6 +624,9 @@ class DspManager(SdrSourceEventClient, ClientDemodulatorSecondaryDspEventClient)
         elif mod == "ism":
             from csdr.chain.rtl433 import Rtl433
             return Rtl433()
+        elif mod == "hfdl":
+            from csdr.chain.dumphfdl import DumpHFDL
+            return DumpHFDL()
 
     def setSecondaryDemodulator(self, mod):
         demodulator = self._getSecondaryDemodulator(mod)
diff --git a/owrx/feature.py b/owrx/feature.py
index 772fc320..da1e6319 100644
--- a/owrx/feature.py
+++ b/owrx/feature.py
@@ -86,6 +86,7 @@ class FeatureDetector(object):
         "drm": ["dream"],
         "dump1090": ["dump1090"],
         "ism": ["rtl_433"],
+        "dumphfdl": ["dumphfdl"],
     }
 
     def feature_availability(self):
@@ -602,3 +603,9 @@ class FeatureDetector(object):
         Debian and Ubuntu based systems should be able to install the package `rtl-433` from the package manager.
         """
         return self.command_is_runnable("rtl_433 -h")
+
+    def has_dumphfdl(self):
+        """
+        TODO
+        """
+        return self.command_is_runnable("dumphfdl --version")
diff --git a/owrx/hfdl/dumphfdl.py b/owrx/hfdl/dumphfdl.py
new file mode 100644
index 00000000..406dd845
--- /dev/null
+++ b/owrx/hfdl/dumphfdl.py
@@ -0,0 +1,18 @@
+from pycsdr.modules import ExecModule
+from pycsdr.types import Format
+
+
+class DumpHFDLModule(ExecModule):
+    def __init__(self):
+        super().__init__(
+            Format.COMPLEX_FLOAT,
+            Format.CHAR,
+            [
+                "dumphfdl",
+                "--iq-file", "-",
+                "--sample-format", "CF32",
+                "--sample-rate", "12000",
+                "--output", "decoded:json:file:path=-",
+                "0",
+            ]
+        )
diff --git a/owrx/ism/rtl433.py b/owrx/ism/rtl433.py
index 4f83e3bd..5ca46ef2 100644
--- a/owrx/ism/rtl433.py
+++ b/owrx/ism/rtl433.py
@@ -1,11 +1,5 @@
 from pycsdr.modules import ExecModule
 from pycsdr.types import Format
-from csdr.module import LineBasedModule
-import json
-
-import logging
-
-logger = logging.getLogger(__name__)
 
 
 class Rtl433Module(ExecModule):
@@ -17,12 +11,3 @@ class Rtl433Module(ExecModule):
         )
 
 
-class JsonParser(LineBasedModule):
-    def process(self, line):
-        try:
-            msg = json.loads(line.decode())
-            msg["mode"] = "ISM"
-            logger.debug(msg)
-            return msg
-        except json.JSONDecodeError:
-            logger.exception("error parsing rtl433 json")
diff --git a/owrx/modes.py b/owrx/modes.py
index 9261aab3..f6ba8ab3 100644
--- a/owrx/modes.py
+++ b/owrx/modes.py
@@ -181,6 +181,14 @@ class Modes(object):
             bandpass=None,
             requirements=["ism"],
             squelch=False,
+        ),
+        DigitalMode(
+            "hfdl",
+            "HFDL",
+            underlying=["empty"],
+            bandpass=Bandpass(0, 3000),
+            requirements=["dumphfdl"],
+            squelch=False,
         )
     ]