diff --git a/EvLaunch.cpp b/EvLaunch.cpp
index aa41b9e4..39011426 100644
--- a/EvLaunch.cpp
+++ b/EvLaunch.cpp
@@ -56,12 +56,25 @@ bool TEventLauncher::Load(cParser *parser)
         dRadius *= dRadius; // do kwadratu, pod warunkiem, że nie jest ujemne
     parser->getTokens(); // klawisz sterujący
     *parser >> token;
-    if (token != "none")
-    {
-        if( token.size() == 1 )
+    if (token != "none") {
+
+        if( token.size() == 1 ) {
+            // single char, assigned activation key
             iKey = vk_to_glfw_key( token[ 0 ] );
-        else
-            iKey = vk_to_glfw_key(stol_def( token, 0 )); // a jak więcej, to jakby numer klawisza jest
+        }
+        else {
+            // this launcher may be activated by radio message
+            std::map<std::string, int> messages {
+                { "radio_call1", radio_message::call1 },
+                { "radio_call3", radio_message::call3 }
+            };
+            auto lookup = messages.find( token );
+            iKey = (
+                lookup != messages.end() ?
+                    lookup->second :
+                    // a jak więcej, to jakby numer klawisza jest
+                    vk_to_glfw_key( stol_def( token, 0 ) ) );
+        }
     }
     parser->getTokens();
     *parser >> DeltaTime;
@@ -139,7 +152,7 @@ bool TEventLauncher::check_activation() {
 
     auto bCond { false };
 
-    if( iKey != 0 ) {
+    if( iKey > 0 ) {
         if( iKey > 255 ) {
             // key and modifier
             auto const modifier = ( iKey & 0xff00 ) >> 8;
@@ -203,6 +216,11 @@ bool TEventLauncher::IsGlobal() const {
           && ( dRadius < 0.0 ) ); // bez ograniczenia zasięgu
 }
 
+bool TEventLauncher::IsRadioActivated() const {
+
+    return ( iKey < 0 );
+}
+
 // radius() subclass details, calculates node's bounding radius
 float
 TEventLauncher::radius_() {
diff --git a/EvLaunch.h b/EvLaunch.h
index 84512e56..b4006901 100644
--- a/EvLaunch.h
+++ b/EvLaunch.h
@@ -14,6 +14,12 @@ http://mozilla.org/MPL/2.0/.
 #include "Classes.h"
 #include "scenenode.h"
 
+// radio-transmitted event launch messages
+enum radio_message {
+    call3 = -3,
+    call1 = -1
+};
+
 class TEventLauncher : public scene::basic_node {
 
 public:
@@ -27,7 +33,11 @@ public:
     bool check_activation();
     // checks conditions associated with the event. returns: true if the conditions are met
     bool check_conditions();
+    inline
+    auto key() const {
+        return iKey; }
     bool IsGlobal() const;
+    bool IsRadioActivated() const;
 // members
     std::string asEvent1Name;
     std::string asEvent2Name;
diff --git a/Event.cpp b/Event.cpp
index ac58a10e..2e7ff1ca 100644
--- a/Event.cpp
+++ b/Event.cpp
@@ -1034,7 +1034,7 @@ logvalues_event::export_as_text_( std::ostream &Output ) const {
 void
 multi_event::init() {
 
-    auto const conditiontchecksmemcell { m_conditions.flags & ( flags::text | flags::value_1 | flags::value_2 ) };
+    auto const conditiontchecksmemcell { ( m_conditions.flags & ( flags::text | flags::value_1 | flags::value_2 ) ) != 0 };
     // not all multi-events have memory cell checks, for the ones which don't we can keep quiet about it
     init_targets( simulation::Memory, "memory cell", conditiontchecksmemcell );
     if( m_ignored ) {
@@ -1932,6 +1932,22 @@ event_manager::queue( TEventLauncher *Launcher ) {
     m_launcherqueue.emplace_back( Launcher );
 }
 
+// inserts in the event query events assigned to event launchers capable of receiving specified radio message sent from specified location
+void
+event_manager::queue_receivers( radio_message const Message, glm::dvec3 const &Location ) {
+
+    for( auto *launcher : m_radiodrivenlaunchers.sequence() ) {
+        if( ( launcher->key() == Message )
+         && ( ( launcher->dRadius < 0 )
+           || ( glm::length2( launcher->location() - Location ) < launcher->dRadius ) )
+         && ( true == launcher->check_conditions() ) ) {
+            // NOTE: only execution of event1 is supported for radio messages
+            // TBD, TODO: consider ability/way to execute event2
+            simulation::Events.AddToQuery( launcher->Event1, nullptr );
+        }
+    }
+}
+
 // legacy method, updates event queues
 void
 event_manager::update() {
@@ -2135,32 +2151,39 @@ event_manager::InitEvents() {
 void
 event_manager::InitLaunchers() {
 
-    for( auto *launcher : m_launchers.sequence() ) {
+    std::vector<basic_table<TEventLauncher> *> launchertables {
+        &m_inputdrivenlaunchers,
+        &m_radiodrivenlaunchers
+    };
 
-        if( launcher->iCheckMask != 0 ) {
-            if( launcher->asMemCellName != "none" ) {
-                // jeśli jest powiązana komórka pamięci
-                launcher->MemCell = simulation::Memory.find( launcher->asMemCellName );
-                if( launcher->MemCell == nullptr ) {
-                    ErrorLog( "Bad scenario: event launcher \"" + launcher->name() + "\" can't find memcell \"" + launcher->asMemCellName + "\"" );
+    for( auto *launchertable : launchertables ) {
+        for( auto *launcher : launchertable->sequence() ) {
+
+            if( launcher->iCheckMask != 0 ) {
+                if( launcher->asMemCellName != "none" ) {
+                    // jeśli jest powiązana komórka pamięci
+                    launcher->MemCell = simulation::Memory.find( launcher->asMemCellName );
+                    if( launcher->MemCell == nullptr ) {
+                        ErrorLog( "Bad scenario: event launcher \"" + launcher->name() + "\" can't find memcell \"" + launcher->asMemCellName + "\"" );
+                    }
+                }
+                else {
+                    launcher->MemCell = nullptr;
                 }
             }
-            else {
-                launcher->MemCell = nullptr;
-            }
-        }
 
-        if( launcher->asEvent1Name != "none" ) {
-            launcher->Event1 = simulation::Events.FindEvent( launcher->asEvent1Name );
-            if( launcher->Event1 == nullptr ) {
-                ErrorLog( "Bad scenario: event launcher \"" + launcher->name() + "\" can't find event \"" + launcher->asEvent1Name + "\"" );
+            if( launcher->asEvent1Name != "none" ) {
+                launcher->Event1 = simulation::Events.FindEvent( launcher->asEvent1Name );
+                if( launcher->Event1 == nullptr ) {
+                    ErrorLog( "Bad scenario: event launcher \"" + launcher->name() + "\" can't find event \"" + launcher->asEvent1Name + "\"" );
+                }
             }
-        }
 
-        if( launcher->asEvent2Name != "none" ) {
-            launcher->Event2 = simulation::Events.FindEvent( launcher->asEvent2Name );
-            if( launcher->Event2 == nullptr ) {
-                ErrorLog( "Bad scenario: event launcher \"" + launcher->name() + "\" can't find event \"" + launcher->asEvent2Name + "\"" );
+            if( launcher->asEvent2Name != "none" ) {
+                launcher->Event2 = simulation::Events.FindEvent( launcher->asEvent2Name );
+                if( launcher->Event2 == nullptr ) {
+                    ErrorLog( "Bad scenario: event launcher \"" + launcher->name() + "\" can't find event \"" + launcher->asEvent2Name + "\"" );
+                }
             }
         }
     }
@@ -2176,8 +2199,14 @@ event_manager::export_as_text( std::ostream &Output ) const {
             event->export_as_text( Output );
         }
     }
-    Output << "// event launchers\n";
-    for( auto const *launcher : m_launchers.sequence() ) {
+    Output << "// event launchers, basic\n";
+    for( auto const *launcher : m_inputdrivenlaunchers.sequence() ) {
+        if( launcher->group() == null_handle ) {
+            launcher->export_as_text( Output );
+        }
+    }
+    Output << "// event launchers, radio driven\n";
+    for( auto const *launcher : m_radiodrivenlaunchers.sequence() ) {
         if( launcher->group() == null_handle ) {
             launcher->export_as_text( Output );
         }
diff --git a/Event.h b/Event.h
index 59f82d75..ca01c295 100644
--- a/Event.h
+++ b/Event.h
@@ -559,6 +559,9 @@ public:
     // adds specified event launcher to the list of global launchers
     void
         queue( TEventLauncher *Launcher );
+    // inserts in the event query events assigned to event launchers capable of receiving specified radio message sent from specified location
+    void
+        queue_receivers( radio_message const Message, glm::dvec3 const &Location );
     // legacy method, updates event queues
     void
         update();
@@ -569,7 +572,10 @@ public:
     inline
     bool
         insert( TEventLauncher *Launcher ) {
-            return m_launchers.insert( Launcher ); }
+            return (
+                Launcher->IsRadioActivated() ?
+                    m_radiodrivenlaunchers.insert( Launcher ) :
+                    m_inputdrivenlaunchers.insert( Launcher ) ); }
     // returns first event in the queue
     inline
     basic_event *
@@ -609,7 +615,8 @@ private:
     basic_event *QueryRootEvent { nullptr };
     basic_event *m_workevent { nullptr };
     event_map m_eventmap;
-    basic_table<TEventLauncher> m_launchers;
+    basic_table<TEventLauncher> m_inputdrivenlaunchers;
+    basic_table<TEventLauncher> m_radiodrivenlaunchers;
     eventlauncher_sequence m_launcherqueue;
 };
 
diff --git a/Train.cpp b/Train.cpp
index d04a3622..49bb59c0 100644
--- a/Train.cpp
+++ b/Train.cpp
@@ -17,6 +17,7 @@ http://mozilla.org/MPL/2.0/.
 
 #include "Globals.h"
 #include "simulation.h"
+#include "Event.h"
 #include "simulationtime.h"
 #include "Camera.h"
 #include "Logs.h"
@@ -339,6 +340,7 @@ TTrain::commandhandler_map const TTrain::m_commandhandlers = {
     { user_command::radiochanneldecrease, &TTrain::OnCommand_radiochanneldecrease },
     { user_command::radiostopsend, &TTrain::OnCommand_radiostopsend },
     { user_command::radiostoptest, &TTrain::OnCommand_radiostoptest },
+    { user_command::radiocall3send, &TTrain::OnCommand_radiocall3send },
     { user_command::cabchangeforward, &TTrain::OnCommand_cabchangeforward },
     { user_command::cabchangebackward, &TTrain::OnCommand_cabchangebackward },
     { user_command::generictoggle0, &TTrain::OnCommand_generictoggle },
@@ -5014,6 +5016,7 @@ void TTrain::OnCommand_radiostoptest( TTrain *Train, command_data const &Command
 
     if( Command.action == GLFW_PRESS ) {
         if( ( Train->RadioChannel() == 10 )
+         && ( true == Train->mvOccupied->Radio )
          && ( Train->mvControlled->Battery || Train->mvControlled->ConverterFlag ) ) {
             Train->Dynamic()->RadioStop();
         }
@@ -5026,6 +5029,23 @@ void TTrain::OnCommand_radiostoptest( TTrain *Train, command_data const &Command
     }
 }
 
+void TTrain::OnCommand_radiocall3send( TTrain *Train, command_data const &Command ) {
+
+    if( Command.action == GLFW_PRESS ) {
+        if( ( Train->RadioChannel() != 10 )
+         && ( true == Train->mvOccupied->Radio )
+         && ( Train->mvControlled->Battery || Train->mvControlled->ConverterFlag ) ) {
+            simulation::Events.queue_receivers( radio_message::call3, Train->Dynamic()->GetPosition() );
+        }
+        // visual feedback
+        Train->ggRadioCall3.UpdateValue( 1.0 );
+    }
+    else if( Command.action == GLFW_RELEASE ) {
+        // visual feedback
+        Train->ggRadioCall3.UpdateValue( 0.0 );
+    }
+}
+
 void TTrain::OnCommand_cabchangeforward( TTrain *Train, command_data const &Command ) {
 
     if( Command.action == GLFW_PRESS ) {
@@ -6141,6 +6161,7 @@ bool TTrain::Update( double const Deltatime )
         ggRadioChannelNext.Update();
         ggRadioStop.Update();
         ggRadioTest.Update();
+        ggRadioCall3.Update();
         ggDepartureSignalButton.Update();
 
         ggPantFrontButton.Update();
@@ -7351,6 +7372,7 @@ void TTrain::clear_cab_controls()
     ggRadioChannelNext.Clear();
     ggRadioStop.Clear();
     ggRadioTest.Clear();
+    ggRadioCall3.Clear();
     ggDoorLeftPermitButton.Clear();
     ggDoorRightPermitButton.Clear();
     ggDoorPermitPresetButton.Clear();
@@ -8037,6 +8059,7 @@ bool TTrain::initialize_gauge(cParser &Parser, std::string const &Label, int con
         { "radiochannelnext_sw:", ggRadioChannelNext },
         { "radiostop_sw:", ggRadioStop },
         { "radiotest_sw:", ggRadioTest },
+        { "radiocall3_sw:", ggRadioCall3 },
         { "pantfront_sw:", ggPantFrontButton },
         { "pantrear_sw:", ggPantRearButton },
         { "pantfrontoff_sw:", ggPantFrontButtonOff },
diff --git a/Train.h b/Train.h
index 27a8c43e..0c510ef6 100644
--- a/Train.h
+++ b/Train.h
@@ -341,6 +341,7 @@ class TTrain
     static void OnCommand_radiochanneldecrease( TTrain *Train, command_data const &Command );
     static void OnCommand_radiostopsend( TTrain *Train, command_data const &Command );
     static void OnCommand_radiostoptest( TTrain *Train, command_data const &Command );
+    static void OnCommand_radiocall3send( TTrain *Train, command_data const &Command );
     static void OnCommand_cabchangeforward( TTrain *Train, command_data const &Command );
     static void OnCommand_cabchangebackward( TTrain *Train, command_data const &Command );
     static void OnCommand_generictoggle( TTrain *Train, command_data const &Command );
@@ -411,6 +412,7 @@ public: // reszta może by?publiczna
     TGauge ggRadioChannelNext;
     TGauge ggRadioTest;
     TGauge ggRadioStop;
+    TGauge ggRadioCall3;
     TGauge ggUpperLightButton;
     TGauge ggLeftLightButton;
     TGauge ggRightLightButton;
diff --git a/command.cpp b/command.cpp
index ea77daed..5b27f32f 100644
--- a/command.cpp
+++ b/command.cpp
@@ -123,6 +123,7 @@ commanddescription_sequence Commands_descriptions = {
     { "radiochanneldecrease", command_target::vehicle },
     { "radiostopsend", command_target::vehicle },
     { "radiostoptest", command_target::vehicle },
+    { "radiocall3send", command_target::vehicle },
     // TBD, TODO: make cab change controls entity-centric
     { "cabchangeforward", command_target::vehicle },
     { "cabchangebackward", command_target::vehicle },
diff --git a/command.h b/command.h
index 76f87aea..9a06cd14 100644
--- a/command.h
+++ b/command.h
@@ -117,6 +117,7 @@ enum class user_command {
     radiochanneldecrease,
     radiostopsend,
     radiostoptest,
+    radiocall3send,
     cabchangeforward,
     cabchangebackward,
 
diff --git a/driverkeyboardinput.cpp b/driverkeyboardinput.cpp
index 3d8d3a08..01883f12 100644
--- a/driverkeyboardinput.cpp
+++ b/driverkeyboardinput.cpp
@@ -128,6 +128,7 @@ driverkeyboard_input::default_bindings() {
         { user_command::radiochanneldecrease, GLFW_KEY_R },
         { user_command::radiostopsend, GLFW_KEY_PAUSE | keymodifier::shift | keymodifier::control },
         { user_command::radiostoptest, GLFW_KEY_R | keymodifier::shift | keymodifier::control },
+        { user_command::radiocall3send, GLFW_KEY_BACKSPACE },
         { user_command::cabchangeforward, GLFW_KEY_HOME },
         { user_command::cabchangebackward, GLFW_KEY_END },
         // viewturn,
diff --git a/drivermouseinput.cpp b/drivermouseinput.cpp
index 4d5b3130..e4db62b5 100644
--- a/drivermouseinput.cpp
+++ b/drivermouseinput.cpp
@@ -711,6 +711,9 @@ drivermouse_input::default_bindings() {
         { "radiotest_sw:", {
             user_command::radiostoptest,
             user_command::none } },
+        { "radiocall3_sw:", {
+            user_command::radiocall3send,
+            user_command::none } },
         { "pantfront_sw:", {
             user_command::pantographtogglefront,
             user_command::none } },
diff --git a/simulationstateserializer.cpp b/simulationstateserializer.cpp
index 10f20e2e..a4d2790a 100644
--- a/simulationstateserializer.cpp
+++ b/simulationstateserializer.cpp
@@ -516,7 +516,10 @@ state_serializer::deserialize_node( cParser &Input, scene::scratch_data &Scratch
         }
         else {
             scene::Groups.insert( scene::Groups.handle(), eventlauncher );
-            simulation::Region->insert( eventlauncher );
+            if( false == eventlauncher->IsRadioActivated() ) {
+                // NOTE: radio-activated launchers due to potentially large activation radius are resolved on global level rather than put in a region cell
+                simulation::Region->insert( eventlauncher );
+            }
         }
     }
     else if( nodedata.type == "sound" ) {
diff --git a/translation.cpp b/translation.cpp
index 631b79a4..0465e7b7 100644
--- a/translation.cpp
+++ b/translation.cpp
@@ -157,6 +157,7 @@ init() {
         "radio channel",
         "radiostop test",
         "radiostop",
+        "radio call 3",
         "pantograph A",
         "pantograph B",
         "pantograph A",
@@ -323,6 +324,7 @@ init() {
         "kanal radia",
         "test radiostopu",
         "radiostop",
+        "zew 3",
         "pantograf A",
         "pantograf B",
         "pantograf A",
@@ -442,6 +444,7 @@ init() {
             "radiochannelnext_sw:",
             "radiotest_sw:",
             "radiostop_sw:",
+            "radiocall3_sw:",
             "pantfront_sw:",
             "pantrear_sw:",
             "pantfrontoff_sw:",
diff --git a/translation.h b/translation.h
index 71bec11c..cb64123b 100644
--- a/translation.h
+++ b/translation.h
@@ -146,6 +146,7 @@ enum string {
     cab_radiochannelnext_sw,
     cab_radiotest_sw,
     cab_radiostop_sw,
+    cab_radiocall3_sw,
     cab_pantfront_sw,
     cab_pantrear_sw,
     cab_pantfrontoff_sw,
diff --git a/version.h b/version.h
index ee544018..67a81d3e 100644
--- a/version.h
+++ b/version.h
@@ -1,5 +1,5 @@
 #pragma once
 
 #define VERSION_MAJOR 19
-#define VERSION_MINOR 614
+#define VERSION_MINOR 701
 #define VERSION_REVISION 0