CASSIANIUS: Perdio PR4
CASSIANIUS: Perdio ( Pr3 ?)
CASSIANIUS: Perdio (Pr3 ?). Pcb closeup .
CASSIANIUS: Perdio (Pr3 ?) pcb close up . Note Perdio IF transformer...
CASSIANIUS: Perdio (Pr3 ?). Inside as found.
CASSIANIUS: Transistor Superhet Receivers - Clive Sinclair
CASSIANIUS: Perdio pr2 pcb layout
CASSIANIUS: Perdio pr4 pcb layout
CASSIANIUS: 'PR3 ' advert PW april 1959 - Home build.