---
title: "Packet 91: PlaceRadarStation"
description: "Requests a type-36 radar station placement. The server owns its lifetime and team minimap reveal."
canonical: "https://aosplay.net/protocol-168/packets/91"
markdown: "https://aosplay.net/docs/protocol-168/packets/91.md"
last_updated: "2026-07-16"
protocol: "Ace of Spades Battle Builder 168"
packet_id_decimal: "91"
packet_id_hex: "0x5B"
direction: "C→S"
family: "Deployables"
implementation_status: "Handled"
evidence: "Live-verified"
wire_size: "12 bytes"
---

# Packet 91: PlaceRadarStation

> Requests a type-36 radar station placement. The server owns its lifetime and team minimap reveal.

- **Decimal ID:** 91
- **Hex ID:** 0x5B
- **Direction:** C→S
- **Family:** Deployables
- **Status:** Handled
- **Evidence:** Live-verified
- **Wire size:** 12 bytes

## Implementation note

Corrected raw-voxel layout and two-client retail render lifecycle are verified.

## Exact wire layout

The application packet ID is the first byte. The remaining rows are in decode order. Byte sizes exclude ENet headers, wrapper prefixes, LZF chunk framing, and compression effects.

| # | Field | Encoding | Bytes | Purpose | Condition |
| ---: | --- | --- | ---: | --- | --- |
| 0 | `packet_id` | u8 | 1 | Always 91 (0x5B). | — |
| 1 | `loop_count` | i32 LE | 4 | Simulation-loop stamp used for ordering, prediction, or reconciliation. | — |
| 2 | `player_id` | u8 | 1 | Compact player-slot identifier. | — |
| 3 | `position` | 3 × u16 LE | 6 | Raw X, Y, and Z voxel coordinates. | — |

## Encoding conventions

- `LE` means least-significant byte first.
- `fixed16` is two-byte sign-magnitude at 1/64 precision.
- `orientation16` uses the measured 1/8192 orientation mapping.
- NUL strings consume their encoded byte length plus one `00` terminator.
- Counted arrays repeat immediately in the documented order.

## Related resources

- [HTML packet page](https://aosplay.net/protocol-168/packets/91)
- [Complete packet catalog](https://aosplay.net/protocol-168/packets)
- [Packet catalog in Markdown](https://aosplay.net/docs/protocol-168/packets.md)
- [Protocol 168 guide](https://aosplay.net/protocol-168)