I have just replaced my 15 year old Icom
718 with a new one,after a major problem with the old one.All is good with the new one,but it will not activate the AH4 tuner.It was working fine with the old set.It makes a bleeping sound when pressing the button.I have checked the plug
,all seems okay.Is there something in the radio
settings? I have read the handbook,but no help.
Any ideas much appreciated.