Codes for the Mitsubishi 50803 RPTV:

023: Input+
247: Input-

039: Power Off (also 189)
167: Power On

231: Ant A
036: Ant B
058: Ant A/B Toggle (will switch from other Input1-5)
199: Input 1
071: Input 2
135: Input 3/DVD
007: Input 4/Front
233: Input 5
009: Input DTV
153: Input VGA
137: Ant DTV
073: Component-1
201: Component-2

200: Left Arrow
072: Right Arrow
041: Down Arrow
169: Up Arrow
152: Enter

101: Audio (also 229)
037: Video
074: Zoom Toggle (also 022)

138: PiP On/Off
202: PiP Freeze

168: INSTALL
022: FORMAT
122: SLEEP
251: INFO
103: MENU
186: CANCEL
009: DTV Input
137: ALTERNATE INPUT