Hover the ARM in your loadout or stat card and look at the band it lists; that tells you what radar frequencies it can lock in War Thunder. If you want to target a specific SPAA, check that vehicle’s radar band in x-ray mode or the War Thunder Wiki, then match your missile to it.

How to check it

  1. Open the missile’s stat card in the hangar or loadout screen.
  2. Read the band(s) shown on the missile.
  3. Compare that to the enemy radar band before you launch.

In battle

  • ARMs only work if the enemy is emitting radar.
  • If the missile’s band does not match the radar, it will not track.
  • Some missiles can cover multiple bands, while others are much narrower.

Practical tip

A simple way to think about it is: missile band first, target band second. For example, if your ARM is tuned for I band, it can hit radars using that band, but not every SPAA in the match.

TL;DR: hover the missile to see its band, then match it against the radar band of the AA system you want to kill.