Click on the thumbnail photo to bring up a large picture. Here is a top and side view close up of the classy "rosette" style knobs used on the National SW-3. Click on the thumbnail photo to bring up a large picture. I got the camera as close as possible in order to catch the scroll work on the top and sides of the knob. If you have any spare knobs like this, I'd appreciate hearing from you. National certainly didn't have to put on such a nice knob considering the austerity of the rest of the receiver. I'm glad they did as it adds sort of a mystique to the box. Its the enigma I mentioned earlier, austere box but oddly enough with elegant knobs. |
Click on the thumbnail photo to bring up a large picture. Above is a top view closeup of the National SW-3 "rosette" style knob showing more of the detailed scrolling in the center and reaching out to the edges. Click on the thumbnail photo to bring up a large picture. |
 Click
on the thumbnail photo to bring up a large picture. Above is a closeup
photo of the "Oreo" cookie volume control knob. The
actual diameter is tbd inches. I haven't come across
many radios with a
horizontal operating control of this size.
Click on the thumbnail photo to bring up a large
picture. |
 Click
on the thumbnail photo to bring up a large picture. Here is a closeup
photo of the ratio control adjustment which sets just
behind the frequency control "rosette" knob. The ratio
adjustment
controls the amount of frequency per turn of the
frequency knob. From the picture you can see the
indentions in the bakelite housing. The chrome ratio
adjust "ball" clicks as it is rotated from left to
right. Tuning is most course (greatest amount of
frequency per turn) when the ball is set to the left
side, fine tuning (small amount of frequency per turn)
when the ball is adjusted to the right side. Its a
simple mechanical adjustment but quite
effective. Click on the thumbnail photo to bring
up a large picture. |
 Click
on the thumbnail photo to bring up a large picture. The photo above shows
a close up of the National "Velvet Vernier" frequency
dial. The dial artwork is an "antique" style of
script. Note the
"N" at the top of the dial. This "N" is the only
marking or nomenclature on the cabinet which indicates
a National receiver. Oddly enough, the model number
"SW-3" was never applied to the radio. Click on the
thumbnail photo to bring up a large picture.
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