diff --git a/dump1090.c b/dump1090.c
index 699693d..8fc6f28 100644
--- a/dump1090.c
+++ b/dump1090.c
@@ -514,6 +514,7 @@ void showHelp(void) {
 "--net-ro-interval <rate> TCP output memory flush rate in seconds (default: 0)\n"
 "--net-heartbeat <rate>   TCP heartbeat rate in seconds (default: 60 sec; 0 to disable)\n"
 "--net-buffer <n>         TCP buffer size 64Kb * (2^n) (default: n=0, 64Kb)\n"
+"--net-verbatim           Do not apply CRC corrections to messages we forward; send unchanged\n"
 "--lat <latitude>         Reference/receiver latitude for surface posn (opt)\n"
 "--lon <longitude>        Reference/receiver longitude for surface posn (opt)\n"
 "--max-range <distance>   Absolute maximum range for position decoding (in nm, default: 300)\n"
@@ -826,6 +827,8 @@ int main(int argc, char **argv) {
             Modes.net_output_sbs_port = atoi(argv[++j]);
         } else if (!strcmp(argv[j],"--net-buffer") && more) {
             Modes.net_sndbuf_size = atoi(argv[++j]);
+        } else if (!strcmp(argv[j],"--net-verbatim")) {
+            Modes.net_verbatim = 1;
         } else if (!strcmp(argv[j],"--onlyaddr")) {
             Modes.onlyaddr = 1;
         } else if (!strcmp(argv[j],"--metric")) {
diff --git a/dump1090.h b/dump1090.h
index f757a1b..55fcf8e 100644
--- a/dump1090.h
+++ b/dump1090.h
@@ -349,6 +349,7 @@ struct {                             // Internal state
     int   net_http_port;             // HTTP port
     int   net_fatsv_port;            // FlightAware TSV port
     int   net_sndbuf_size;           // TCP output buffer size (64Kb * 2^n)
+    int   net_verbatim;              // if true, send the original message, not the CRC-corrected one
     int   quiet;                     // Suppress stdout
     int   interactive;               // Interactive mode
     int   interactive_rows;          // Interactive mode: max number of rows
@@ -394,6 +395,7 @@ struct {                             // Internal state
 struct modesMessage {
     // Generic fields
     unsigned char msg[MODES_LONG_MSG_BYTES];      // Binary message.
+    unsigned char verbatim[MODES_LONG_MSG_BYTES]; // Binary message, as originally received before correction
     int           msgbits;                        // Number of bits in message 
     int           msgtype;                        // Downlink format #
     uint32_t      crc;                            // Message CRC
diff --git a/mode_s.c b/mode_s.c
index f6c3d91..9344e10 100644
--- a/mode_s.c
+++ b/mode_s.c
@@ -417,8 +417,12 @@ static char *ais_charset = "@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_ !\"#$%&'()*+,-./01
 
 int decodeModesMessage(struct modesMessage *mm, unsigned char *msg)
 {
-    // Work on our local copy
+    // Work on our local copy.
     memcpy(mm->msg, msg, MODES_LONG_MSG_BYTES);
+    if (Modes.net_verbatim) {
+        // Preserve the original uncorrected copy for later forwarding
+        memcpy(mm->verbatim, msg, MODES_LONG_MSG_BYTES);
+    }
     msg = mm->msg;
 
     // Get the message type ASAP as other operations depend on this
diff --git a/net_io.c b/net_io.c
index ca6bb18..33b2399 100644
--- a/net_io.c
+++ b/net_io.c
@@ -273,6 +273,7 @@ void modesSendBeastOutput(struct modesMessage *mm) {
     char * pTimeStamp;
     char ch;
     int  j;
+    unsigned char *msg = (Modes.net_verbatim ? mm->verbatim : mm->msg);
 
     if (!p)
         return;
@@ -297,7 +298,7 @@ void modesSendBeastOutput(struct modesMessage *mm) {
     if (0x1A == ch) {*p++ = ch; }
 
     for (j = 0; j < msgLen; j++) {
-        *p++ = (ch = mm->msg[j]);
+        *p++ = (ch = msg[j]);
         if (0x1A == ch) {*p++ = ch; }
     }
 
@@ -314,6 +315,7 @@ void modesSendRawOutput(struct modesMessage *mm) {
     char *p = prepareWrite(&Modes.raw_out, msgLen*2 + 15);
     int j;
     unsigned char * pTimeStamp;
+    unsigned char *msg = (Modes.net_verbatim ? mm->verbatim : mm->msg);
 
     if (!p)
         return;
@@ -329,7 +331,7 @@ void modesSendRawOutput(struct modesMessage *mm) {
         *p++ = '*';
 
     for (j = 0; j < msgLen; j++) {
-        sprintf(p, "%02X", mm->msg[j]);
+        sprintf(p, "%02X", msg[j]);
         p += 2;
     }