The X‑TERRA 305 has 12 segments.
The target IDs range from –4 up to 44, increasing in steps of 4.
The X‑TERRA 505 has 19 segments.
The target IDs range from –9 to 48, increasing in steps of 3.
The more segments available, the more separate target IDs available.
XTERRA305XTERRA505