diff --git a/station_broadcast.lua b/station_broadcast.lua
index af9a283..eae687e 100644
--- a/station_broadcast.lua
+++ b/station_broadcast.lua
@@ -1,6 +1,6 @@
 
 -- 1. Configuration & Constants
-local APP_VERSION_TEXT = "v1.0.50"
+local APP_VERSION_TEXT = "v1.0.51"
 
 local CONFIG = {
     CLOUD_URL = "ws://stabadmin.fse-media.group",
@@ -2704,38 +2704,38 @@ function Main.loop()
                         end
                         
                         if etaSeconds >= 0 and etaSeconds <= 45 then
-                            seenApproachKeys[announceKey] = true
-                            local pending = State.pendingApproaching[announceKey]
-                            if not pending then
-                                State.pendingApproaching[announceKey] = { since = now, lastEta = etaSeconds }
-                            else
-                                if etaSeconds > (tonumber(pending.lastEta) or etaSeconds) + 15 then
-                                    pending.since = now
+                            if not seenApproachKeys[announceKey] then
+                                seenApproachKeys[announceKey] = true
+                                local pending = State.pendingApproaching[announceKey]
+                                if not pending then
+                                    State.pendingApproaching[announceKey] = { since = now, lastEta = etaSeconds }
+                                else
+                                    if etaSeconds > (tonumber(pending.lastEta) or etaSeconds) + 15 then
+                                        pending.since = now
+                                    end
+                                    pending.lastEta = etaSeconds
                                 end
-                                pending.lastEta = etaSeconds
-                            end
 
-                            local stableMs = tonumber(CONFIG.APPROACHING_STABLE_MS) or 15000
-                            local currentPending = State.pendingApproaching[announceKey]
-                            if currentPending and (now - (currentPending.since or now)) >= stableMs and not State.announcedApproaching[announceKey] then
-                                State.announcedApproaching[announceKey] = now
-                                Utils.log("INFO", string.format("Train Approaching: %s (ETA: %.1fs, Delay: %dm)", trainName, etaSeconds, delayMinutes))
-                                Network.send({
-                                    type = "train_approaching",
-                                    stationName = State.stationName,
-                                    stationCode = State.stationCode,
-                                    stationPlatform = platform,
-                                    trainId = trainName,
-                                    destination = destination,
-                                    eta = string.format("%.1fs", etaSeconds),
-                                    etaSeconds = etaSeconds,
-                                    delay = displayDelayMinutes,
-                                    cancelled = cancelled,
-                                    reason = reason
-                                })
+                                local stableMs = tonumber(CONFIG.APPROACHING_STABLE_MS) or 15000
+                                local currentPending = State.pendingApproaching[announceKey]
+                                if currentPending and (now - (currentPending.since or now)) >= stableMs and not State.announcedApproaching[announceKey] then
+                                    State.announcedApproaching[announceKey] = now
+                                    Utils.log("INFO", string.format("Train Approaching: %s (ETA: %.1fs, Delay: %dm)", trainName, etaSeconds, delayMinutes))
+                                    Network.send({
+                                        type = "train_approaching",
+                                        stationName = State.stationName,
+                                        stationCode = State.stationCode,
+                                        stationPlatform = platform,
+                                        trainId = trainName,
+                                        destination = destination,
+                                        eta = string.format("%.1fs", etaSeconds),
+                                        etaSeconds = etaSeconds,
+                                        delay = displayDelayMinutes,
+                                        cancelled = cancelled,
+                                        reason = reason
+                                    })
+                                end
                             end
-                        else
-                            State.pendingApproaching[announceKey] = nil
                         end
                     end
                 end
@@ -2838,36 +2838,36 @@ function Main.loop()
                         end
 
                         if etaSeconds >= 0 and etaSeconds <= 45 then
-                            seenApproachKeys[announceKey] = true
-                            local pending = State.pendingApproaching[announceKey]
-                            if not pending then
-                                State.pendingApproaching[announceKey] = { since = now, lastEta = etaSeconds }
-                            else
-                                if etaSeconds > (tonumber(pending.lastEta) or etaSeconds) + 3 then
-                                    pending.since = now
+                            if not seenApproachKeys[announceKey] then
+                                seenApproachKeys[announceKey] = true
+                                local pending = State.pendingApproaching[announceKey]
+                                if not pending then
+                                    State.pendingApproaching[announceKey] = { since = now, lastEta = etaSeconds }
+                                else
+                                    if etaSeconds > (tonumber(pending.lastEta) or etaSeconds) + 15 then
+                                        pending.since = now
+                                    end
+                                    pending.lastEta = etaSeconds
                                 end
-                                pending.lastEta = etaSeconds
-                            end
 
-                            local stableMs = tonumber(CONFIG.APPROACHING_STABLE_MS) or 15000
-                            local currentPending = State.pendingApproaching[announceKey]
-                            if currentPending and (now - (currentPending.since or now)) >= stableMs and not State.announcedApproaching[announceKey] then
-                                State.announcedApproaching[announceKey] = now
-                                Utils.log("INFO", string.format("Train Approaching: %s (ETA: %ds, Delay: %dm)", tName, etaSeconds, delay))
-                                Network.send({
-                                    type = "train_approaching",
-                                    stationName = State.stationName,
-                                    stationCode = State.stationCode,
-                                    stationPlatform = platform or State.stationPlatform or "1",
-                                    trainId = tName,
-                                    destination = dest,
-                                    eta = etaStr,
-                                    etaSeconds = etaSeconds,
-                                    delay = delay
-                                })
+                                local stableMs = tonumber(CONFIG.APPROACHING_STABLE_MS) or 15000
+                                local currentPending = State.pendingApproaching[announceKey]
+                                if currentPending and (now - (currentPending.since or now)) >= stableMs and not State.announcedApproaching[announceKey] then
+                                    State.announcedApproaching[announceKey] = now
+                                    Utils.log("INFO", string.format("Train Approaching: %s (ETA: %ds, Delay: %dm)", tName, etaSeconds, delay))
+                                    Network.send({
+                                        type = "train_approaching",
+                                        stationName = State.stationName,
+                                        stationCode = State.stationCode,
+                                        stationPlatform = platform or State.stationPlatform or "1",
+                                        trainId = tName,
+                                        destination = dest,
+                                        eta = etaStr,
+                                        etaSeconds = etaSeconds,
+                                        delay = delay
+                                    })
+                                end
                             end
-                        else
-                            State.pendingApproaching[announceKey] = nil
                         end
                     end
                 end