HD-615/ARC-51X Metalen versterker van het type RT-743/ARC-51A RT-348/ARC-54 RT-348/ARC-54 RT-348/ARC-54 RT-348/ARC-54 RT-348/ARC-54 RT-348/ARC-54 RT-348/ARC-54 RT-348/ARC-54 Amplifier, IF, type RT-348/ARC-54 Amplifier, IF, type RT-348/ARC-54
