Hi Sandy and all.

National made very fine electronic gear. Their TV sets were very well engineered with superb build quality to back it up. The HRO amateur and SW receivers are still superb performers by the standards of now. That HRO transistor set is engineering which is unparalled to this day. And it performs well right now in good nick. Delightful equipment they made including components. Their vernier dials and tuning capacitors and coils are among the best ever. :tresbon:

If you go to my TV-7W page, you can see an ad for the "Videometer" with the meter that measured both line voltage and field intensity.

http://www.antiqueradio.org/NationalTV-7W.htm

I would love to find one some day.

Phil Nelson
Phil's Old Radios
http://antiqueradio.org/index.html

Excellent web site.

Great pictures of the National and restoration tips.