TETD Top Page > Search by Application > Broadcasting Systems

Communication & Social infrastructure [Broadcasting Systems]

Electron Tubes

Power Grid Tubes < Tetrodes Plate Loss : less than 1000W>
Type Heater or Filament Trans
Conduct.
(mS)		 Use
 Max
Freq.
(MHz)		 Max. Ratings Plate
Output
(W)		 Cooling
Volt
(V)		 Curr.
(A)		 Plate Volt.
(V)		 Plate Curr.
(mA)		 Plate Diss.
(W)
7F37R 4.0 35 15(0.4) CT *
ABI**
SSB		 130
30 		4000
5000		 700
700 		1000
1000 		1250
1800		 FA

♦Notes

  1. *When operating at 90MHz. **When operating below 30MHz.
  2. FA : Forced Air Cooling
Power Grid Tubes < Tetrodes Plate Loss : less than 10W>
Type Heater or Filament Trans
Conduct.
(mS)		 Use
 Max
Freq.
(MHz)		 Max. Ratings Plate
Output
(kW)		 Cooling
Volt
(V)		 Curr.
(A)		 Plate Volt.
(kV)		 Plate Curr.
(A)		 Plate Diss.
(kW)
7F71R 4.0 78 65 (1.6) CT *
BTV**		 130
300		 5
5		 1.8
1.8		 3.5
3.5		 5
1.1		 FA
8F45R 7.5 75 23 (1.0) CT
CP
ABI 		110
110
110		 8
5.5
8		 3.0
2.5
3.0 		5
5
5		 14
5.5
6		 FA

♦Notes

  1. *When operating at 90MHz. **When operating below 30MHz.
    *** Pulse plate current.*
  2. FA : Forced Air Cooling OFA : Oil or Forced air cooling O : Oil cooling
Power Grid Tubes < Tetrodes Plate Loss: Over 10W>
Type Heater or Filament Trans
Conduct.
(mS)		 Use
 Max
Freq.
(MHz)		 Max. Ratings Plate
Output
(kW)		 Cooling
Volt
(V)		 Curr.
(A)		 Plate Volt.
(kV)		 Plate Curr.
(A)		 Plate Diss.
(kW)
8F67R 6.9-7.5 126 65 (3.0) CT
BTV**		 230
230		 8
8		 4.5
6		 15
15		 15.5***
15.2***		 FA
8F68 8.5 185 85 (3.0) CT
BTV*		 220
220		 11
11		 9
12
 30
30		 40
30		 VF
8F68R 8.5 185 85 (3.0) CT
BTV*		 220
220		 10
10		 8
10		 25
25 		40
30		 FA
8F76R 7.5 120 60 (2.5) CT
BTV*		 250
250		 10
10		 4.5
5.5		 15
15 		15
12 		FA
9F45 16 345 150 (10) CT**
CP**		 30
30 		15
15		 25
20		 150
100 		250
150 		VF

♦Notes

  1. *Bandwidth of 6.0MHz, sync. level.* In a grounded control-grid screen-grid circuit. **When operating below 30MHz. *** Effective power.
  2. FA : Forced Air Cooling VF : Vapor cooling, Forced ventilation