wanted...tx-rx mod extend frq range 70 cm on icom-448e icom449e icom481h
 

"tx-rx" frq mod to extend frq range on 70-cm to 477.500 "rx and tx" or
any help at all ,..........any one can offer they are all icom s models
are 448e , 449e , 481h ..........73s ......