This is the definitive list of all of the signals on the railway.
| SIGM20 | DCC addr | Location | Virtual |
|---|---|---|---|
| 1 | 201 | Portsmouth platform 1 exit signal | |
| 1 | 202 | Portsmouth platform 2 exit signal | |
| 1 | 203 | Portsmouth platform 3 exit signal | |
| 1 | 204 | Portsmouth platform 4 exit signal | |
| 1 | 205 | Portsmouth GR1 exit | |
| 1 | 206 | Portsmouth GR2 exit | |
| 1 | 207 | Portsmouth spur on entry to Portsmouth, top of hill | |
| 1 | 208 | Portsmouth GR3 exit | |
| 1 | 209 | Virtual at diverging junction in Portsmouth ladder. | Yes |
| 1 | 210 | Virtual in Portsmouth loop at diverging junction | Yes |
| 2 | 217 | Main line ORANGE signal before Portsmouth loop junction | |
| 2 | 218 | Portsmouth reverse loop 1 exit signal | |
| 2 | 219 | Portsmouth reverse loop 2 exit signal | |
| 2 | 220 | Portsmouth reverse loop 3 exit signal | |
| 2 | 221 | Main line GREEN at foot of Butser hill | |
| 2 | 222 | Main line ORANGE at foot of Butser hill | |
| 2 | 223 | Main line GREEN behinds Portsmouth | |
| 2 | 224 | Main line ORANGE at tunnel entry under Portsmouth | Yes |
| 2 | 225 | Virtual at diverging junction in Portsmouth yard | Yes |
| 2 | 225 | Virtual at diverging junction in Portsmouth yard | Yes |
| 3 | 233 | Main line ORANGE storage track 4 exit under Eastleigh | |
| 3 | 234 | Main line ORANGE storage track 3 exit under Eastleigh | |
| 3 | 235 | Main line GREEN storage track 1 exit under Eastleigh | |
| 3 | 236 | Main line GREEN storage track 2 exit under Eastleigh | |
| 3 | 237 | Eastleigh stand 2 exit to main line | |
| 3 | 238 | Main line GREEN at junction for Petersfield loop | |
| 3 | 239 | Reverse loop exit to main line at Petersfield Loop | |
| 3 | 240 | Unused | |
| 3 | 241 | Virtual at diverging junction in Portsmouth loop | Y |
| 3 | 242 | Virtual to entry to ORANGE storage roads under Eastleigh | Y |
| 4 | 249 | Main line GREEN at junction for Portsmouth spur | |
| 4 | 250 | Portsmouth spur at entry to GREEN main line | |
| 4 | 251 | Eastleigh stand 1 exit to main line | |
| 4 | 252 | Petersfield platform 1 exit | |
| 4 | 253 | Petersfield platform 5 exit, ORANGE | |
| 4 | 254 | Petersfield platform 4 exit, ORANGE | |
| 4 | 255 | Main line ORANGE at diverging junction to Portsmouth spur | Y |
| 4 | 256 | Main line ORANGE at diverging junction to Eastleigh | Y |
| 4 | 257 | Main line GREEN at diverging junction into Petersfield | Y |
| 4 | 258 | Main line GREEN at diverging junction into Petersfield | Y |
| 5 | 265 | Petersfield platform 2 exit, GREEN | |
| 5 | 266 | Petersfield platform 3 exit, GREEN | |
| 5 | 267 | Fiddle yard ORANGE line 1 exit | |
| 5 | 268 | Fiddle yard ORANGE line 2 exit | |
| 5 | 269 | Fiddle yard ORANGE line 3 exit | |
| 5 | 270 | Fiddle yard ORANGE line 4 exit | |
| 5 | 271 | Fiddle yard ORANGE line 5 exit | |
| 5 | 273 | Diverging junction on main line ORANGE at entry to Petersfield | Y |
| 5 | 274 | Entry road to Eastleigh, diverging jn at double slip to track 1,2 | Y |
| 6 | 281 | Fiddle yard GREEN line 1 exit | |
| 6 | 282 | Fiddle yard GREEN line 2 exit | |
| 6 | 283 | Fiddle yard GREEN line 3 exit | |
| 6 | 284 | Fiddle yard GREEN line 4 exit | |
| 6 | 285 | Fiddle yard GREEN line 5 exit | |
| 6 | 286 | Diverging junction on main line GREEN into fiddle yard | Y |
| 6 | 287 | Diverging junction on main line GREEN into fiddle yard | Y |
| 6 | 288 | Diverging junction on main line GREEN into fiddle yard | Y |
| 6 | 289 | Diverging junction on main line GREEN into fiddle yard | Y |
| 7 | 297 | Main line GREEN at diverging junction to Clanfield | |
| 7 | 298 | Main line ORANGE at Clanfield junction | |
| 7 | 299 | Clanfield platform 3 exit | |
| 7 | 300 | Clanfield platform 2 exit | |
| 7 | 301 | Clanfield platform 1 exit | |
| 7 | 302 | Diverging junction on main line ORANGE into fiddle yard | Y |
| 7 | 303 | Diverging junction on main line ORANGE into fiddle yard | Y |
| 7 | 304 | Diverging junction on main line ORANGE into fiddle yard | Y |
| 7 | 305 | Diverging junction on main line ORANGE into fiddle yard | Y |
| 7 | 306 | Diverging junction on main line ORANGE into fiddle yard | Y |
| 8 | 313 | Orange fiddle yard track 1 centre | |
| 8 | 314 | Orange fiddle yard track 2 centre | |
| 8 | 315 | Green fiddle yard track 1 centre | |
| 8 | 316 | Green fiddle yard track 2 centre | |
| 8 | 317 | Petersfield reverse loop behind fiddle yard |
SIGM20 serial numbers:
| SIGM20 | serial number | location |
| 1 | 8 | Portsmouth |
| 2 | 7 | panel under Portsmouth |
| 3 | 6 | panel under Eastleigh |
| 4 | 5 | panel under Eastleigh |
| 5 | 64 | fiddle yard |
| 6 | 65 | fiddle yard |
| 7 | 277 | Clanfield |