Branded Raytheon
- Base
- Black
- Bottle Height
- Half
- Code On Tube
- f32 B4K1
- Country
- Great Britain
- Factory Code
- B - Mullard, Blackburn, B - Mullard, Blackburn
- Getter
- O-Getter Disk
- Glass Color
- Clear Glass
- Mica
- Double
- Permanentid
- 2givgdinfd
- Permanentid
- 2givgdinfd
- Pin Color
- Silver Pins
- Plate Color
- Matte Gray
- Plate Color
- Matte Gray
More GZ34 type tubes
More 5AR4 type tubes
Branded National Electronics
