[Ron Ramirez]

Sam, here's a few pictures for you.

A close-up of the top of the power transformer:

[Image: http://www.philcoradio.com/images/phorum...5T_016.jpg]

Notice what looks like a knob on top, with an arrow pointing to the "100-130" position. That isn't a knob; it is a plug with four contacts.

[Image: http://www.philcoradio.com/images/phorum...5T_018.jpg]

You are looking at the bottom side of that plug, showing the key and four contacts.

Now, see the top of the transformer with the plug removed:

[Image: http://www.philcoradio.com/images/phorum...5T_017.jpg]

Notice that there are two keyways, allowing the plug to be inserted one of two ways.

[Image: http://www.philcoradio.com/images/phorum...5T_019.jpg]

Here, with the plug inserted in the other position, it is now pointing to the "200-260" position and is now set for operation on 230-240 volt AC. Moving this plug from one position to the other is how the power transformer was set for the proper input line voltage. (I moved it back to the 100-130 position after taking this photo.)