Hi All,I have a couple of trantec S4.4 handheld mics, and a couple of S4.5 recievers.The mics use the following channels.1 863.1502 863.7253 864.1504 864.850 The recievers are the earlier ones, which only have one CH70 frequency overlapping with the mics, 863.725Mhz.The later ones had all 4 the same.Does anyone know if its possible to reprogram these recievers to do this? They have a 9 pin Mini-Din on the rear, marked Data, which the manual has no info on.I know the S4000 recievers (which I think this is varient of?) had programming software, and a lead for thispurpose.I have searched the forum but found nothing more than references to its existance. Can anyone help please? Kindest regards Bob