Physical Characteristics
updated 23-08-98

Here's a list of physical traits of the types I have collected...

type fillament getter mica print box remark remark
Hytron VT52 VV wire 2 glass + base WE by Hytron wafer on bottom of base 2 support rods for filament
Hytron VT52 VV wire 2 base - strip attached to grid posts in U shape 2 support rods for filament
Hytron 38142 VV plate 2 glass + base 38142 VT52 two support rods for filament -
Sylvania VT52 VV wire 2 glass Sylvania VT52 wafer on bottom of base 2 support rods for filament
Sylvania VT52 VV plate 2 n.a. n.a. ceramic plate supports n.a.
TungSol VT52 VV plate 2 oval base TungSol VT52 black paint on inside of glass -
Raytheon VT52 VV 4 pillar box plate large ceramic supports
Western Electric VT52 VVV double wire plus strip top only base WE VT52 grid sticks out underneath anode -
Senco VT52 VVV double wire plus strip top only none - grid sticks out underneath anode -
Philco VT52 VVV double wire plus strip top only base - grid sticks out underneath anode -
National Union VT52 VVV double wire plus strip top only base - grid sticks out underneath anode -

 

Empirical dimensions of glass and anodes

Tung-Sol VT52
- ST14 shape, 4 1/16" tall from base
- plate is 1 3/8" high, 5/16" thick and 1 1/16" wide
Rayhtheon VT52
- ST16 shape, 4 5/8" tall from base
Philco/Senco/WE/NU VT52
- slender ST16 shape, 4 5/8" tall from base
- plate is 1 9/16" high, 5/16" thick and 1 1/16" wide
Hytron/Sylvania VT52
- ST16 shape, 4 5/8" tall from base
- plate is 1 7/8" high, 4/16" thick and 1" wide
Sylvania VT52
- ST16 shape, 4 5/8" tall from base
- plate is 1 8/16" high, 5/16" thic and 1 1/16" wide

© Jim de Kort