diff --git a/csdr.py b/csdr.py
index 05b8973..8b8edef 100755
--- a/csdr.py
+++ b/csdr.py
@@ -25,7 +25,7 @@ import os
 import signal
 import threading
 from functools import partial
-from owrx.wsjt import Ft8Chopper, WsprChopper, Jt9Chopper, Jt65Chopper
+from owrx.wsjt import Ft8Chopper, WsprChopper, Jt9Chopper, Jt65Chopper, Ft4Chopper
 
 import logging
 logger = logging.getLogger(__name__)
@@ -281,6 +281,8 @@ class dsp(object):
                 chopper = Jt65Chopper(self.secondary_process_demod.stdout)
             elif smd == "jt9":
                 chopper = Jt9Chopper(self.secondary_process_demod.stdout)
+            elif smd == "ft4":
+                chopper = Ft4Chopper(self.secondary_process_demod.stdout)
             chopper.start()
             self.output.add_output("wsjt_demod", chopper.read)
         else:
@@ -375,7 +377,7 @@ class dsp(object):
     def isWsjtMode(self, demodulator = None):
         if demodulator is None:
             demodulator = self.get_secondary_demodulator()
-        return demodulator in ["ft8", "wspr", "jt65", "jt9"]
+        return demodulator in ["ft8", "wspr", "jt65", "jt9", "ft4"]
 
     def set_output_rate(self,output_rate):
         self.output_rate=output_rate
diff --git a/htdocs/css/openwebrx.css b/htdocs/css/openwebrx.css
index 47cf9cf..91e03e8 100644
--- a/htdocs/css/openwebrx.css
+++ b/htdocs/css/openwebrx.css
@@ -843,10 +843,12 @@ img.openwebrx-mirror-img
 #openwebrx-panel-digimodes[data-mode="wspr"] #openwebrx-digimode-content-container,
 #openwebrx-panel-digimodes[data-mode="jt65"] #openwebrx-digimode-content-container,
 #openwebrx-panel-digimodes[data-mode="jt9"] #openwebrx-digimode-content-container,
+#openwebrx-panel-digimodes[data-mode="ft4"] #openwebrx-digimode-content-container,
 #openwebrx-panel-digimodes[data-mode="ft8"] #openwebrx-digimode-select-channel,
 #openwebrx-panel-digimodes[data-mode="wspr"] #openwebrx-digimode-select-channel,
 #openwebrx-panel-digimodes[data-mode="jt65"] #openwebrx-digimode-select-channel,
-#openwebrx-panel-digimodes[data-mode="jt9"] #openwebrx-digimode-select-channel
+#openwebrx-panel-digimodes[data-mode="jt9"] #openwebrx-digimode-select-channel,
+#openwebrx-panel-digimodes[data-mode="ft4"] #openwebrx-digimode-select-channel
 {
     display: none;
 }
@@ -854,7 +856,8 @@ img.openwebrx-mirror-img
 #openwebrx-panel-digimodes[data-mode="ft8"] #openwebrx-digimode-canvas-container,
 #openwebrx-panel-digimodes[data-mode="wspr"] #openwebrx-digimode-canvas-container,
 #openwebrx-panel-digimodes[data-mode="jt65"] #openwebrx-digimode-canvas-container,
-#openwebrx-panel-digimodes[data-mode="jt9"] #openwebrx-digimode-canvas-container
+#openwebrx-panel-digimodes[data-mode="jt9"] #openwebrx-digimode-canvas-container,
+#openwebrx-panel-digimodes[data-mode="ft4"] #openwebrx-digimode-canvas-container
 {
     height: 200px;
     margin: -10px;
diff --git a/htdocs/index.html b/htdocs/index.html
index 7e9f380..e2b8010 100644
--- a/htdocs/index.html
+++ b/htdocs/index.html
@@ -84,6 +84,7 @@
                             <option value="wspr" data-feature="wsjt-x">WSPR</option>
                             <option value="jt65" data-feature="wsjt-x">JT65</option>
                             <option value="jt9" data-feature="wsjt-x">JT9</option>
+                            <option value="ft4" data-feature="wsjt-x">FT4</option>
                         </select>
                     </div>
                     <div class="openwebrx-panel-line">
diff --git a/htdocs/openwebrx.js b/htdocs/openwebrx.js
index eee6175..be79ee5 100644
--- a/htdocs/openwebrx.js
+++ b/htdocs/openwebrx.js
@@ -1385,7 +1385,7 @@ function update_wsjt_panel(msg) {
     var t = new Date(msg['timestamp']);
     var pad = function(i) { return ('' + i).padStart(2, "0"); }
     var linkedmsg = msg['msg'];
-    if (['FT8', 'JT65', 'JT9'].indexOf(msg['mode']) >= 0) {
+    if (['FT8', 'JT65', 'JT9', 'FT4'].indexOf(msg['mode']) >= 0) {
         var matches = linkedmsg.match(/(.*\s[A-Z0-9]+\s)([A-R]{2}[0-9]{2})$/);
         if (matches && matches[2] != 'RR73') {
             linkedmsg = html_escape(matches[1]) + '<a href="/map?locator=' + matches[2] + '" target="_blank">' + matches[2] + '</a>';
@@ -2711,6 +2711,7 @@ function demodulator_digital_replace(subtype)
     case "wspr":
     case "jt65":
     case "jt9":
+    case "ft4":
         secondary_demod_start(subtype);
         demodulator_analog_replace('usb', true);
         demodulator_buttons_update();
@@ -2718,7 +2719,7 @@ function demodulator_digital_replace(subtype)
     }
     $('#openwebrx-panel-digimodes').attr('data-mode', subtype);
     toggle_panel("openwebrx-panel-digimodes", true);
-    toggle_panel("openwebrx-panel-wsjt-message", ['ft8', 'wspr', 'jt65', 'jt9'].indexOf(subtype) >= 0);
+    toggle_panel("openwebrx-panel-wsjt-message", ['ft8', 'wspr', 'jt65', 'jt9', 'ft4'].indexOf(subtype) >= 0);
 }
 
 function secondary_demod_create_canvas()
@@ -2892,6 +2893,7 @@ function secondary_demod_listbox_changed()
         case "wspr":
         case "jt65":
         case "jt9":
+        case "ft4":
             demodulator_digital_replace(sdm);
             break;
     }
diff --git a/owrx/wsjt.py b/owrx/wsjt.py
index b0c8c4b..0e89e11 100644
--- a/owrx/wsjt.py
+++ b/owrx/wsjt.py
@@ -169,6 +169,17 @@ class Jt9Chopper(WsjtChopper):
         return ["jt9", "--jt9", "-d", "3", file]
 
 
+class Ft4Chopper(WsjtChopper):
+    def __init__(self, source):
+        self.interval = 7.5
+        self.fileTimestampFormat = "%y%m%d_%H%M%S"
+        super().__init__(source)
+
+    def decoder_commandline(self, file):
+        #TODO expose decoding quality parameters through config
+        return ["jt9", "--ft4", "-d", "3", file]
+
+
 class WsjtParser(object):
     locator_pattern = re.compile(".*\\s([A-Z0-9]+)\\s([A-R]{2}[0-9]{2})$")
     wspr_splitter_pattern = re.compile("([A-Z0-9]*)\\s([A-R]{2}[0-9]{2})\\s([0-9]+)")
@@ -181,7 +192,8 @@ class WsjtParser(object):
     modes = {
         "~": "FT8",
         "#": "JT65",
-        "@": "JT9"
+        "@": "JT9",
+        "+": "FT4"
     }
 
     def parse(self, data):