Chat

Player speech (say/emote/whisper/yell) and server-wide system broadcasts.

Opcode	Name	Dir	Size	Description
0xAD	Unicode Ascii Speech Request	C → S	Variable	The only speech packet a modern client (ClassicUO 7.x) sends — ASCII TalkRequest (0x03) is intentionally not implemented.
0xAE	Unicode Speech Message	S → C	Variable	The only outgoing chat packet, sent to every recipient of a message including the speaker — never a reuse of the incoming packet, per real UO server behavior (confirmed across ModernUO, UOX3 and polserver).