diff --git a/RELEASE.md b/RELEASE.md
index c83762093..0631c548e 100644
--- a/RELEASE.md
+++ b/RELEASE.md
@@ -13,12 +13,14 @@
 ### Changes
 - Updated weapon switch and pickup HUD elements to use the same logic for getting weapon names
   - Fixes very rare cases where they would say different things
+- Ported "TTT: Add custom T Radio sound support and extra default sounds" from base TTT
 
 ### Fixes
 - Fixed illusionist not blocking traitor team voice chat
 - Fixed promoted impersonator and deputy who are searched by a detective not always showing their true role on the scoreboard
 
 ### Developer
+- Ported "signed" parameter added to `util.BitsRequired` from base TTT
 - Added `state` parameter to `TTTTeamVoiceChatTargets` hook
 - Added `table.GetFirstItemWithPropertyValue` static method
 - Added `maxchange` parameter to `TTTVampireBodyEaten` hook
diff --git a/gamemodes/terrortown/entities/entities/ttt_radio.lua b/gamemodes/terrortown/entities/entities/ttt_radio.lua
index 909e178a1..ae181fec8 100644
--- a/gamemodes/terrortown/entities/entities/ttt_radio.lua
+++ b/gamemodes/terrortown/entities/entities/ttt_radio.lua
@@ -14,16 +14,15 @@ local MathRand = math.Rand
 local MathRandom = math.random
 local SoundPlay = sound.Play
 local TableAdd = table.Add
-local TableHasValue = table.HasValue
 local TableInsert = table.insert
 local TableRandom = table.Random
 local TableRemove = table.remove
 local TimerSimple = timer.Simple
 
 if CLIENT then
-   -- this entity can be DNA-sampled so we need some display info
-   ENT.Icon = "vgui/ttt/icon_radio"
-   ENT.PrintName = "radio_name"
+    -- this entity can be DNA-sampled so we need some display info
+    ENT.Icon = "vgui/ttt/icon_radio"
+    ENT.PrintName = "radio_name"
 end
 
 ENT.Type = "anim"
@@ -116,162 +115,73 @@ function ENT:AddSound(snd)
     end
 end
 
-local simplesounds = {
-    scream = {
-        Sound("vo/npc/male01/pain07.wav"),
-        Sound("vo/npc/male01/pain08.wav"),
-        Sound("vo/npc/male01/pain09.wav"),
-        Sound("vo/npc/male01/no02.wav")
-    },
-    explosion = {
-        Sound("BaseExplosionEffect.Sound")
-    }
-};
-
-local serialsounds = {
-    footsteps = {
-        sound = {
-            {Sound("player/footsteps/concrete1.wav"), Sound("player/footsteps/concrete2.wav")},
-            {Sound("player/footsteps/concrete3.wav"), Sound("player/footsteps/concrete4.wav")}
-        },
-        times = {8, 16},
-        delay = 0.35,
-        ampl = 80
-    },
-
-    burning = {
-        sound = {
-            Sound("General.BurningObject"),
-            Sound("General.StopBurning")
-        },
-        times = {2, 2},
-        delay = 4,
-    },
-
-
-    beeps = {
-        sound = { Sound("weapons/c4/c4_beep1.wav") },
-        delay = 0.75,
-        times = {8, 12},
-        ampl = 70
-    }
-};
-
-local gunsounds = {
-    shotgun = {
-        sound = Sound( "Weapon_XM1014.Single" ),
-        delay = 0.8,
-        times = {1, 3},
-        burst = false
-    },
-
-    pistol = {
-        sound = Sound( "Weapon_FiveSeven.Single" ),
-        delay = 0.4,
-        times = {2, 4},
-        burst = false
-    },
-
-    mac10 = {
-        sound = Sound( "Weapon_mac10.Single" ),
-        delay = 0.065,
-        times = {5, 10},
-        burst = true
-    },
-
-    deagle = {
-        sound = Sound( "Weapon_Deagle.Single" ),
-        delay = 0.6,
-        times = {1, 3},
-        burst = false
-    },
-
-    m16 = {
-        sound = Sound( "Weapon_M4A1.Single" ),
-        delay = 0.2,
-        times = {1, 5},
-        burst = true
-    },
-
-    rifle = {
-        sound = Sound( "weapons/scout/scout_fire-1.wav" ),
-        delay = 1.5,
-        times = {1, 1},
-        burst = false,
-        ampl = 80
-    },
-
-    huge = {
-        sound = Sound( "Weapon_m249.Single" ),
-        delay = 0.055,
-        times = {6, 12},
-        burst = true
-    }
-};
-
 function ENT:PlayDelayedSound(snd, ampl, last)
     -- maybe we can get destroyed while a timer is still up
-    if IsValid(self) then
-        if istable(snd) then
-            snd = TableRandom(snd)
-        end
+    if not IsValid(self) then return end
 
-        if self.BroadcastSound then
-            self:BroadcastSound(snd, ampl)
-        else
-            SoundPlay(snd, self:GetPos(), ampl)
-        end
-        self.Playing = not last
+    if istable(snd) then
+        snd = TableRandom(snd)
+    end
+
+    if self.BroadcastSound then
+        self:BroadcastSound(snd, ampl)
+    else
+        SoundPlay(snd, self:GetPos(), ampl)
     end
+
+    self.Playing = not last
 end
 
 function ENT:PlaySound(snd)
-    local pos = self:GetPos()
-    local this = self
-    if simplesounds[snd] then
-        if self.BroadcastSound then
-            self:BroadcastSound(TableRandom(simplesounds[snd]))
+    local soundData = TRADIO.Sounds[snd]
+    if not soundData then return end
+
+    if hook.Run("TTTRadioPlaySound", self, snd, soundData) == true then return end
+
+    local sndlist = soundData.sound
+    local ampl = soundData.ampl
+
+    local serial = soundData.serial
+    local times = soundData.times
+    if serial or times then
+        local num = istable(sndlist) and #sndlist or 1
+
+        if times then
+            times = istable(times) and MathRandom(times[1], times[2]) or times
         else
-            SoundPlay(TableRandom(simplesounds[snd]), pos)
+            times = num
         end
-    elseif gunsounds[snd] then
-        local gunsound = gunsounds[snd]
-        local times = MathRandom(gunsound.times[1], gunsound.times[2])
-        local t = 0
-        for i=1, times do
-            TimerSimple(t,
-                        function()
-                            if IsValid(this) then
-                                this:PlayDelayedSound(gunsound.sound, gunsound.ampl or 90, i == times)
-                            end
-                        end)
-
-            if gunsound.burst then
-                t = t + gunsound.delay
-            else
-                t = t + MathRand(gunsound.delay, gunsound.delay * 2)
+
+        if times > 1 then
+            local delay = soundData.delay
+            local idx = 1
+
+            local t = 0
+            for i = 1, times do
+                local sndpath = serial and sndlist[idx] or sndlist
+
+                TimerSimple(t,
+                            function()
+                                -- maybe we can get destroyed while a timer is still up
+                                if not IsValid(self) then return end
+
+                                self:PlayDelayedSound(sndpath, ampl, i == times)
+                            end)
+
+                local d = istable(delay) and MathRand(delay[1], delay[2]) or delay
+                t = t + d
+
+                if serial then
+                idx = idx + 1
+                if idx > num then idx = 1 end
+                end
             end
-        end
-    elseif serialsounds[snd] then
-        local serialsound = serialsounds[snd]
-        local num = #serialsound.sound
-        local times = MathRandom(serialsound.times[1], serialsound.times[2])
-        local t = 0
-        local idx = 1
-        for i=1, times do
-            local chosen = serialsound.sound[idx]
-            TimerSimple(t,
-                        function()
-                            if IsValid(this) then
-                                this:PlayDelayedSound(chosen, serialsound.ampl or 75, i == times)
-                            end
-                        end)
-
-            t = t + serialsound.delay
-            idx = idx + 1
-            if idx > num then idx = 1 end
+
+            return
         end
     end
+
+    self:PlayDelayedSound(sndlist, ampl, true)
 end
 
 local nextplay = 0
@@ -288,13 +198,6 @@ function ENT:Think()
 end
 
 if SERVER then
-    local soundtypes = {
-        "scream", "shotgun", "explosion",
-        "pistol", "mac10", "deagle",
-        "m16", "rifle", "huge",
-        "burning", "beeps", "footsteps"
-    };
-
     local function RadioCmd(ply, cmd, args)
         if not IsValid(ply) then return end
         if #args ~= 2 then return end
@@ -308,7 +211,7 @@ if SERVER then
         if radio:GetOwner() ~= ply then return end
         if radio:GetClass() ~= "ttt_radio" then return end
 
-        if not TableHasValue(soundtypes, snd) then
+        if not TRADIO.Sounds[snd] then
             print("Received radio sound not in table from", ply)
             return
         end
diff --git a/gamemodes/terrortown/gamemode/cl_radio.lua b/gamemodes/terrortown/gamemode/cl_radio.lua
new file mode 100644
index 000000000..9117236dd
--- /dev/null
+++ b/gamemodes/terrortown/gamemode/cl_radio.lua
@@ -0,0 +1,83 @@
+--- Traitor radio controls
+
+local math = math
+local vgui = vgui
+
+local GetTranslation = LANG.GetTranslation
+local TryTranslation = LANG.TryTranslation
+
+TRADIO.SoundOrder = {
+    "scream", "burning", "explosion", "footsteps",
+    "pistol", "shotgun", "mac10", "deagle",
+    "m16", "rifle", "huge", "glock",
+    "beeps", "sipistol", "teleport", "hstation"
+};
+
+local function PlayRadioSound(snd)
+    local r = LocalPlayer().radio
+    if IsValid(r) then
+        RunConsoleCommand("ttt_radio_play", tostring(r:EntIndex()), snd)
+    end
+end
+
+local function ButtonClickPlay(s) PlayRadioSound(s.snd) end
+
+local columns = 4
+local rows = 5
+
+local bh, bw = 50, 100
+local m = 5
+
+local function CreateSoundBoard(parent)
+    local b = vgui.Create("DScrollPanel", parent)
+
+    local sorder = TRADIO.SoundOrder
+    local ver = math.min(math.ceil(#sorder / columns), rows)
+    local sbar = ver == rows and b:GetVBar():GetWide() or 0
+
+    b:SetSize(bw * columns + m * (columns - 1) + sbar, bh * ver + m * (ver - 1))
+    b:SetPos(m, 25)
+    b:CenterHorizontal()
+
+    local grid = vgui.Create("DIconLayout", b)
+    grid:Dock(FILL)
+    grid:SetSpaceX(m)
+    grid:SetSpaceY(m)
+
+    for ri, snd in ipairs(sorder) do
+        local but = grid:Add("DButton")
+        but:SetSize(bw, bh)
+        but:SetText(TryTranslation(TRADIO.Sounds[snd].name))
+        but.snd = snd
+        but.DoClick = ButtonClickPlay
+    end
+
+    return b
+end
+
+function TRADIO.CreateMenu(parent)
+    local w, h = parent:GetSize()
+
+    local client = LocalPlayer()
+
+    local wrap = vgui.Create("DPanel", parent)
+    wrap:SetSize(w, h)
+    wrap:SetPaintBackground(false)
+
+    local dhelp = vgui.Create("DLabel", wrap)
+    dhelp:SetFont("TabLarge")
+    dhelp:SetText(GetTranslation("radio_help"))
+    dhelp:SetTextColor(COLOR_WHITE)
+
+    if IsValid(client.radio) then
+        CreateSoundBoard(wrap)
+    elseif client:HasWeapon("weapon_ttt_radio") then
+        dhelp:SetText(GetTranslation("radio_notplaced"))
+    end
+
+    dhelp:SizeToContents()
+    dhelp:SetPos(10, 5)
+    dhelp:CenterHorizontal()
+
+    return wrap
+end
\ No newline at end of file
diff --git a/gamemodes/terrortown/gamemode/init.lua b/gamemodes/terrortown/gamemode/init.lua
index c51ecf2da..213bcd561 100644
--- a/gamemodes/terrortown/gamemode/init.lua
+++ b/gamemodes/terrortown/gamemode/init.lua
@@ -24,6 +24,7 @@ AddCSLuaFile("lang_shd.lua")
 AddCSLuaFile("corpse_shd.lua")
 AddCSLuaFile("player_ext_shd.lua")
 AddCSLuaFile("weaponry_shd.lua")
+AddCSLuaFile("radio_shd.lua")
 AddCSLuaFile("cl_radio.lua")
 AddCSLuaFile("cl_radar.lua")
 AddCSLuaFile("cl_tbuttons.lua")
diff --git a/gamemodes/terrortown/gamemode/lang/english.lua b/gamemodes/terrortown/gamemode/lang/english.lua
index 0da23eb01..bf13f54b3 100644
--- a/gamemodes/terrortown/gamemode/lang/english.lua
+++ b/gamemodes/terrortown/gamemode/lang/english.lua
@@ -150,7 +150,10 @@ L.radio_button_huge = "H.U.G.E burst"
 L.radio_button_c4 = "C4 beeping"
 L.radio_button_burn = "Burning"
 L.radio_button_steps = "Footsteps"
-
+L.radio_button_glock = "Glock shots"
+L.radio_button_sipist = "Silenced shots"
+L.radio_button_tele = "Teleport"
+L.radio_button_heal = "Healing"
 
 -- Intro screen shown after joining
 L.intro_help = "If you're new to the game, press F1 for instructions!"
diff --git a/gamemodes/terrortown/gamemode/radio_shd.lua b/gamemodes/terrortown/gamemode/radio_shd.lua
new file mode 100644
index 000000000..26fe2e85a
--- /dev/null
+++ b/gamemodes/terrortown/gamemode/radio_shd.lua
@@ -0,0 +1,189 @@
+--- Traitor radio sounds
+
+local table = table
+
+TRADIO = TRADIO or {}
+
+-- This table contains every sound that can be played by the Radio traitor item.
+--
+-- It also contains settings that change how the sound is displayed on the client,
+-- or how the sound is played on the server:
+--
+-- name: The name of the sound shown in the T menu. Can be localized.
+-- sound: The sound to be played, or a table of sounds to pick from randomly.
+-- serial: If true, play through the sound table in sequential order instead of randomly.
+-- times: The number of times to repeat the sound. If set to a table, randomizes the number of times within the range {min, max}.
+-- delay: The delay between sound repetitions. If set to a table, randomizes the delay within the range {min, max}.
+-- ampl: The sound level. See https://wiki.facepunch.com/gmod/Enums/SNDLVL
+--
+-- If serial = true, you can nest multiple sound tables within the sound table.
+-- This will cause the radio to choose a random sound from the first table,
+-- then on the next repetition, choose a random sound from the next table,
+-- and so on. See footsteps (lines 70-80) for an example of this.
+--
+--
+-- If you want to add custom sounds to the radio, use TRADIO.AddNewSound in a shared lua file.
+-- For example:
+--   TRADIO.AddNewSound("glock", {
+--      name = "Glock shots",
+--      sound = Sound("Weapon_Glock.single"),
+--      delay = 0.1,
+--      times = {4, 8},
+--      ampl = 90
+--   })
+--
+-- If you want to overwrite an existing sound, you can simply modify TRADIO.Sounds directly.
+-- For example:
+--   TRADIO.Sounds.explosion = {
+--      name = "Balloon pop!",
+--      sound = Sound("garrysmod/balloon_pop_cute.wav")
+--   }
+
+TRADIO.Sounds = {
+    -- Simple Sounds
+    scream = {
+        name = "radio_button_scream",
+        sound = {
+            Sound("vo/npc/male01/pain07.wav"),
+            Sound("vo/npc/male01/pain08.wav"),
+            Sound("vo/npc/male01/pain09.wav"),
+            Sound("vo/npc/male01/no02.wav")
+        }
+    },
+    explosion = {
+        name = "radio_button_expl",
+        sound = Sound("BaseExplosionEffect.Sound")
+    },
+    beeps = {
+        name = "radio_button_c4",
+        sound = Sound("weapons/c4/c4_beep1.wav"),
+        delay = 0.75,
+        times = {8, 12},
+        ampl = 70
+    },
+    hstation = {
+        name = "radio_button_heal",
+        sound = Sound("items/medshot4.wav"),
+        delay = 2,
+        times = {4, 8}
+    },
+
+    -- Serial Sounds
+    footsteps = {
+        name = "radio_button_steps",
+        sound = {
+            {Sound("player/footsteps/concrete1.wav"), Sound("player/footsteps/concrete2.wav")},
+            {Sound("player/footsteps/concrete3.wav"), Sound("player/footsteps/concrete4.wav")}
+        },
+        serial = true,
+        times = {8, 16},
+        delay = 0.35,
+        ampl = 80
+    },
+
+    burning = {
+        name = "radio_button_burn",
+        sound = {
+            Sound("General.BurningObject"),
+            Sound("General.StopBurning")
+        },
+        serial = true,
+        delay = 4,
+    },
+
+    teleport = {
+        name = "radio_button_tele",
+        sound = {
+            Sound("ambient/levels/labs/teleport_mechanism_windup1.wav"),
+            Sound("ambient/levels/labs/electric_explosion4.wav")
+        },
+        serial = true,
+        delay = 1
+    },
+
+    -- Gun Sounds
+    shotgun = {
+        name = "radio_button_shotgun",
+        sound = Sound( "Weapon_XM1014.Single" ),
+        delay = {0.8, 1.6},
+        times = {1, 3},
+        ampl = 90
+    },
+
+    pistol = {
+        name = "radio_button_pistol",
+        sound = Sound( "Weapon_FiveSeven.Single" ),
+        delay = {0.4, 0.8},
+        times = {2, 4},
+        ampl = 90
+    },
+
+    mac10 = {
+        name = "radio_button_mac10",
+        sound = Sound( "Weapon_mac10.Single" ),
+        delay = 0.065,
+        times = {5, 10},
+        ampl = 90
+    },
+
+    deagle = {
+        name = "radio_button_deagle",
+        sound = Sound( "Weapon_Deagle.Single" ),
+        delay = {0.6, 1.2},
+        times = {1, 3},
+        ampl = 90
+    },
+
+    m16 = {
+        name = "radio_button_m16",
+        sound = Sound( "Weapon_M4A1.Single" ),
+        delay = 0.2,
+        times = {1, 5},
+        ampl = 90
+    },
+
+    rifle = {
+        name = "radio_button_rifle",
+        sound = Sound( "weapons/scout/scout_fire-1.wav" ),
+        ampl = 80
+    },
+
+    huge = {
+        name = "radio_button_huge",
+        sound = Sound( "Weapon_m249.Single" ),
+        delay = 0.055,
+        times = {6, 12},
+        ampl = 90
+    },
+
+    glock = {
+        name = "radio_button_glock",
+        sound = Sound("Weapon_Glock.single"),
+        delay = 0.1,
+        times = {4, 8},
+        ampl = 90
+    },
+
+    sipistol = {
+        name = "radio_button_sipist",
+        sound = Sound("Weapon_USP.SilencedShot"),
+        delay = {0.38, 0.76},
+        times = {2, 4},
+        ampl = 50
+    }
+}
+
+function TRADIO.AddNewSound(key, soundData)
+    local newkey = key
+    local i = 1
+    while TRADIO.Sounds[newkey] do
+        newkey = key .. tostring(i)
+        i = i + 1
+    end
+
+    TRADIO.Sounds[newkey] = soundData
+
+    if CLIENT then
+        table.insert(TRADIO.SoundOrder, newkey)
+    end
+end
diff --git a/gamemodes/terrortown/gamemode/shared.lua b/gamemodes/terrortown/gamemode/shared.lua
index def8ff8e3..7dd64e2fe 100644
--- a/gamemodes/terrortown/gamemode/shared.lua
+++ b/gamemodes/terrortown/gamemode/shared.lua
@@ -1553,6 +1553,7 @@ COLOR_CYAN = Color(0, 255, 255, 255)
 
 include("lang_shd.lua") -- uses some of util
 include("equip_items_shd.lua")
+include("radio_shd.lua")
 
 function DetectiveMode() return GetGlobalBool("ttt_detective", false) end
 function HasteMode() return GetGlobalBool("ttt_haste", false) end