If  you have ICOM IC-2800 + options DTMF card ( CT-91 ) (in sweden UT-49) you can make changes from other radios through DTMF tones.
 First! 
Push [DTMF] twice on the radio and it´s light (REMO) in the display.
 To make changes press 
 Open	=	B code #		default code = 000
 
1	=	Call channel 
2	=	Memory 
3	=	VFO
 
6	=	High transmit power 
9	=	Low  transmit power
 
*	=	step down 
#	=	step up
 
A	=	Escape 
D	=	Clear only in mode 2 or 3. After that you can enter memory channel number or VFO Mhz
 
DB*	=	Log out / Cross band repeater ON 
B*	=	Log out / Cross band repeater OFF
 
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