Frm::Item/ set_par() should return Entity even if no db[:body];
 fdb[noaffix] was String , not Symbol;
debug: FrmCmd/ do not use @field for storing ${cc} to avoid mixup with ${cc} of the FrmRSP;
fdb//response@noaffix is added (for Kenwood);
* fdb-ken gives error of CC even if it isn't used in ACK file -> CC is remained in field which is for Command CC subst;
correct protocol for kenwood;