diff --git a/src/trx-client/trx-frontend/trx-frontend-http/assets/web/plugins/ft8.js b/src/trx-client/trx-frontend/trx-frontend-http/assets/web/plugins/ft8.js
index 34b7082..61a6f1c 100644
--- a/src/trx-client/trx-frontend/trx-frontend-http/assets/web/plugins/ft8.js
+++ b/src/trx-client/trx-frontend/trx-frontend-http/assets/web/plugins/ft8.js
@@ -38,8 +38,8 @@ function renderFt8Message(message) {
       while (j < message.length && isAlphaNum(message[j])) j++;
       const token = message.slice(i, j);
       const grid = token.toUpperCase();
-      if (/^[A-R]{2}\\d{2}(?:[A-X]{2})?$/.test(grid)) {
-        out += `<span class="ft8-locator">[${grid}]</span>`;
+      if (/^[A-R]{2}\d{2}(?:[A-X]{2})?$/.test(grid)) {
+        out += `<span class="ft8-locator">${grid}</span>`;
       } else {
         out += escapeHtml(token);
       }
@@ -60,7 +60,7 @@ function extractFirstGrid(message) {
       while (j < message.length && isAlphaNum(message[j])) j++;
       const token = message.slice(i, j);
       const grid = token.toUpperCase();
-      if (/^[A-R]{2}\\d{2}(?:[A-X]{2})?$/.test(grid)) return grid;
+      if (/^[A-R]{2}\d{2}(?:[A-X]{2})?$/.test(grid)) return grid;
       i = j;
     } else {
       i += 1;
diff --git a/src/trx-client/trx-frontend/trx-frontend-http/src/api.rs b/src/trx-client/trx-frontend/trx-frontend-http/src/api.rs
index 039512d..5bc4239 100644
--- a/src/trx-client/trx-frontend/trx-frontend-http/src/api.rs
+++ b/src/trx-client/trx-frontend/trx-frontend-http/src/api.rs
@@ -110,6 +110,11 @@ pub async fn decode_events() -> Result<HttpResponse, Error> {
                 .into_iter()
                 .map(trx_core::decode::DecodedMessage::Aprs),
         );
+        out.extend(
+            crate::server::audio::snapshot_cw_history()
+                .into_iter()
+                .map(trx_core::decode::DecodedMessage::Cw),
+        );
         out.extend(
             crate::server::audio::snapshot_ft8_history()
                 .into_iter()
@@ -355,6 +360,7 @@ pub async fn toggle_ft8_decode(
 pub async fn clear_ft8_decode(
     rig_tx: web::Data<mpsc::Sender<RigRequest>>,
 ) -> Result<HttpResponse, Error> {
+    crate::server::audio::clear_ft8_history();
     send_command(&rig_tx, RigCommand::ResetFt8Decoder).await
 }
 
@@ -362,6 +368,7 @@ pub async fn clear_ft8_decode(
 pub async fn clear_aprs_decode(
     rig_tx: web::Data<mpsc::Sender<RigRequest>>,
 ) -> Result<HttpResponse, Error> {
+    crate::server::audio::clear_aprs_history();
     send_command(&rig_tx, RigCommand::ResetAprsDecoder).await
 }
 
@@ -369,6 +376,7 @@ pub async fn clear_aprs_decode(
 pub async fn clear_cw_decode(
     rig_tx: web::Data<mpsc::Sender<RigRequest>>,
 ) -> Result<HttpResponse, Error> {
+    crate::server::audio::clear_cw_history();
     send_command(&rig_tx, RigCommand::ResetCwDecoder).await
 }
 
diff --git a/src/trx-client/trx-frontend/trx-frontend-http/src/audio.rs b/src/trx-client/trx-frontend/trx-frontend-http/src/audio.rs
index a65b3c7..e2ba45a 100644
--- a/src/trx-client/trx-frontend/trx-frontend-http/src/audio.rs
+++ b/src/trx-client/trx-frontend/trx-frontend-http/src/audio.rs
@@ -9,7 +9,9 @@
 //! - Subsequent binary messages: raw Opus packets (RX)
 //! - Browser sends binary messages: raw Opus packets (TX)
 
+use std::collections::VecDeque;
 use std::sync::{Mutex, OnceLock};
+use std::time::{Duration, Instant};
 
 use actix_web::{get, web, Error, HttpRequest, HttpResponse};
 use actix_ws::Message;
@@ -18,7 +20,7 @@ use tokio::sync::{broadcast, mpsc, watch};
 use tracing::warn;
 
 use trx_core::audio::AudioStreamInfo;
-use trx_core::decode::DecodedMessage;
+use trx_core::decode::{AprsPacket, CwEvent, DecodedMessage, Ft8Message};
 
 struct AudioChannels {
     rx: broadcast::Sender<Bytes>,
@@ -49,12 +51,108 @@ fn decode_channel() -> &'static Mutex<Option<broadcast::Sender<DecodedMessage>>>
     CHANNEL.get_or_init(|| Mutex::new(None))
 }
 
+const HISTORY_RETENTION: Duration = Duration::from_secs(24 * 60 * 60);
+
+fn aprs_history() -> &'static Mutex<VecDeque<(Instant, AprsPacket)>> {
+    static HISTORY: OnceLock<Mutex<VecDeque<(Instant, AprsPacket)>>> = OnceLock::new();
+    HISTORY.get_or_init(|| Mutex::new(VecDeque::new()))
+}
+
+fn cw_history() -> &'static Mutex<VecDeque<(Instant, CwEvent)>> {
+    static HISTORY: OnceLock<Mutex<VecDeque<(Instant, CwEvent)>>> = OnceLock::new();
+    HISTORY.get_or_init(|| Mutex::new(VecDeque::new()))
+}
+
+fn ft8_history() -> &'static Mutex<VecDeque<(Instant, Ft8Message)>> {
+    static HISTORY: OnceLock<Mutex<VecDeque<(Instant, Ft8Message)>>> = OnceLock::new();
+    HISTORY.get_or_init(|| Mutex::new(VecDeque::new()))
+}
+
+fn prune_aprs_history(history: &mut VecDeque<(Instant, AprsPacket)>) {
+    while let Some((ts, _)) = history.front() {
+        if ts.elapsed() <= HISTORY_RETENTION {
+            break;
+        }
+        history.pop_front();
+    }
+}
+
+fn prune_cw_history(history: &mut VecDeque<(Instant, CwEvent)>) {
+    while let Some((ts, _)) = history.front() {
+        if ts.elapsed() <= HISTORY_RETENTION {
+            break;
+        }
+        history.pop_front();
+    }
+}
+
+fn prune_ft8_history(history: &mut VecDeque<(Instant, Ft8Message)>) {
+    while let Some((ts, _)) = history.front() {
+        if ts.elapsed() <= HISTORY_RETENTION {
+            break;
+        }
+        history.pop_front();
+    }
+}
+
+fn record_aprs(pkt: AprsPacket) {
+    let mut history = aprs_history().lock().expect("aprs history mutex poisoned");
+    history.push_back((Instant::now(), pkt));
+    prune_aprs_history(&mut history);
+}
+
+fn record_cw(event: CwEvent) {
+    let mut history = cw_history().lock().expect("cw history mutex poisoned");
+    history.push_back((Instant::now(), event));
+    prune_cw_history(&mut history);
+}
+
+fn record_ft8(msg: Ft8Message) {
+    let mut history = ft8_history().lock().expect("ft8 history mutex poisoned");
+    history.push_back((Instant::now(), msg));
+    prune_ft8_history(&mut history);
+}
+
+pub fn snapshot_aprs_history() -> Vec<AprsPacket> {
+    let mut history = aprs_history().lock().expect("aprs history mutex poisoned");
+    prune_aprs_history(&mut history);
+    history.iter().map(|(_, pkt)| pkt.clone()).collect()
+}
+
+pub fn snapshot_cw_history() -> Vec<CwEvent> {
+    let mut history = cw_history().lock().expect("cw history mutex poisoned");
+    prune_cw_history(&mut history);
+    history.iter().map(|(_, evt)| evt.clone()).collect()
+}
+
+pub fn snapshot_ft8_history() -> Vec<Ft8Message> {
+    let mut history = ft8_history().lock().expect("ft8 history mutex poisoned");
+    prune_ft8_history(&mut history);
+    history.iter().map(|(_, msg)| msg.clone()).collect()
+}
+
+pub fn clear_aprs_history() {
+    let mut history = aprs_history().lock().expect("aprs history mutex poisoned");
+    history.clear();
+}
+
+pub fn clear_cw_history() {
+    let mut history = cw_history().lock().expect("cw history mutex poisoned");
+    history.clear();
+}
+
+pub fn clear_ft8_history() {
+    let mut history = ft8_history().lock().expect("ft8 history mutex poisoned");
+    history.clear();
+}
+
 /// Set the decode broadcast channel from the client main.
 pub fn set_decode_channel(tx: broadcast::Sender<DecodedMessage>) {
     let mut ch = decode_channel()
         .lock()
         .expect("decode channel mutex poisoned");
     *ch = Some(tx);
+    start_decode_history_collector();
 }
 
 /// Subscribe to the decode broadcast channel, if available.
@@ -65,6 +163,38 @@ pub fn subscribe_decode() -> Option<broadcast::Receiver<DecodedMessage>> {
     ch.as_ref().map(|tx| tx.subscribe())
 }
 
+fn start_decode_history_collector() {
+    static STARTED: OnceLock<Mutex<bool>> = OnceLock::new();
+    let started = STARTED.get_or_init(|| Mutex::new(false));
+    let mut started_guard = started.lock().expect("decode history start mutex poisoned");
+    if *started_guard {
+        return;
+    }
+    *started_guard = true;
+
+    let ch = decode_channel()
+        .lock()
+        .expect("decode channel mutex poisoned");
+    let Some(tx) = ch.as_ref().cloned() else {
+        return;
+    };
+
+    tokio::spawn(async move {
+        let mut rx = tx.subscribe();
+        loop {
+            match rx.recv().await {
+                Ok(msg) => match msg {
+                    DecodedMessage::Aprs(pkt) => record_aprs(pkt),
+                    DecodedMessage::Cw(evt) => record_cw(evt),
+                    DecodedMessage::Ft8(msg) => record_ft8(msg),
+                },
+                Err(broadcast::error::RecvError::Lagged(_)) => continue,
+                Err(broadcast::error::RecvError::Closed) => break,
+            }
+        }
+    });
+}
+
 #[get("/audio")]
 pub async fn audio_ws(req: HttpRequest, body: web::Payload) -> Result<HttpResponse, Error> {
     let channels = audio_channels().lock().expect("audio channels mutex poisoned");