Part of a fine collection of developmental metal tubes. See inside for more details Photos: Bob Millard.
In this issue
- A trip to remember
- ETL Dekatron Survey 2009
- Weird Tube of the Month: RCA 20-kw VHF Tetrode
- Classical Philips Transmitting Tubes
- More on GE Metal Tubes
- UHF-TV Microminiature Ceramic Tubes
- The Varian Honeycomb Grids
- A Type 87?
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