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QEL1150

VHF/UHF power tetrode designed for RF amplification, oscillator, frequency multiplication, and modulation to approximately 500 MHz. A versatile professional high-frequency power tube.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: B8G
Base pins: 8
Nominal heater: 6 V / 2.6 A

Description

VHF/UHF tetrode for RF amplifier, oscillator, frequency-multiplier and modulator service to 500 MHz.

Socket description

Loctal 8-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: B8G
Base pins: 8
Nominal heater voltage: 6 V
Nominal heater current: 2.6 A
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

1 physical section, each with unique specifications.

Section 1

Tetrode

X-ray radiationInterelectrode capacitances

Transconductance: 0.012 S
Amplification factor: 5
Max plate voltage: 300 V
Max screen voltage: 300 V
Max plate dissipation: 250 W
Max screen dissipation: 12 W
Max cathode current: 250 mA

VHF/UHF tetrode for RF amplifier, oscillator, frequency-multiplier and modulator service to 500 MHz.

Source-dependent data

Operating conditions by source

Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.

Data set 01

1963 Philips Electron Tubes Handbook V4

Published operating points and test conditions from this source.

SECTION 1

Tetrode

Characteristic

Published electrical value
500 MHz
| 500 Mc/s
modulatrice a des frequences jusqu'a
500 MHz
| modulatrice a des frequences jusqu'a 500 MHz
Published electrical value
81 s
| 81s zu 500 MHz
Published electrical value
500 MHz
| 81s zu 500 MHz
Chauffage: indirect
2.6 A
| Chauffage: indirect 2.6A
L'usagedu support de tube
40222 a
Cooling | L'usagedu support de tube 40222 avec la cheminee 56 590 81/40
malen Loctalfassung nicht gesichert
1 s
Cooling | malen Loctalfassung nicht gesichert 1st. wird die Ver-
en utilisantle support
40222 a
Cooling | en utilisantle support 40222 avec la cheminee 56 590 81/40

Capacitance

Capacitances Ca
4.5 pF
Capacitances | Capacitances Ca = 4.5 pF
Kapazitaten
15.5 pF
Capacitances | Kapazitaten 15.5 pF
Cagl
0.03 pF
Capacitances | Cagl = 0.03 pF

Other

Kenndaten Va
500 V
Typical characteristics | Kenndaten Va = 500 V
S Vg
250 V
Typical characteristics | S Vg2 = 250 V 12 mA/V
S Vg
12 mA/V
Typical characteristics | S Vg2 = 250 V 12 mA/V
Plate current
200 mA
Typical characteristics | Ia = 200 mA
Va wo Va
10 V
Class C telegraphy | Va wo Va 10 Va wo4)
Seal temperature max
150 °C
Cooling | Seal temperature max. 150°C
Temperature des scellements max
150 °C
Cooling | Temperature des scellements max. 150°C
Temperatur der Einschmelzungen max
150 °C
Cooling | Temperatur der Einschmelzungen max. 150°C
Plate voltage
1250 V
Maximum ratings | Va = max. 1250 V Vg2 = max. 300V
Plate voltage
300 V
Maximum ratings | Va = max. 1250 V Vg2 = max. 300V
Wia = max
300 W
Maximum ratings | Wia = max. 300 W Wg2 = max. 12 W
Wia = max
12 W
Maximum ratings | Wia = max. 300 W Wg2 = max. 12 W
Control-grid voltage
150 W
Maximum ratings | Wa = max. 150 W -Vg 1 = max. 250V
Control-grid voltage
250 V
Maximum ratings | Wa = max. 150 W -Vg 1 = max. 250V
Plate current
250 mA
Maximum ratings | Ia = max. 250 mA WgI = max. 2W
Plate current
2 W
Maximum ratings | Ia = max. 250 mA WgI = max. 2W
Plate voltage
600 V
Maximum ratings | Va = 1250 1000 750 600 V
Screen-grid voltage
250 V
Maximum ratings | Vg2 = 250 250 250 250 V
Control-grid voltage
-75 V
Maximum ratings | Vg1 = -90 -80 -80 -75 V
Vg l p
90 V
Maximum ratings | Vg l p = 105 95 95 90 V
Plate current
200 mA
Maximum ratings | Ia = 200 200 200 200 mA
Screen-grid current
37 mA
Maximum ratings | Ig2 = 20 30 37 37 mA
Igt
10 mA
Maximum ratings | Igt = 10 10 10 10 mA
Wig
0.7 W
Maximum ratings | Wig1 1 ) = 0.8 0.7 0.7 0.7 W
Wg
9.3 W
Maximum ratings | Wg2 = 5 7.5 9.3 9.3 W
Wia
120 W
Maximum ratings | Wia = 250 200 150 120 W
Wa
35 W
Maximum ratings | Wa = 55 50 40 35W
W
85 W
Maximum ratings | W0 = 195 150 110 85 W
f
500 MHz
Class C telegraphy | f 500 500 500 500 Mc/s
Plate voltage
600 V
Class C telegraphy | Va = 1250 1000 800 600 V
Screen-grid voltage
250 V
Class C telegraphy | Vg2 = 250 250 250 250 V
Control-grid voltage
-80 V
Class C telegraphy | Vg1 = -80 -80 -80 -80 V
la
200 mA
Class C telegraphy | la = 200 200 200 200 mA
Published electrical value
7 mA
Class C telegraphy | 152 = 7 7 7 7mA
lg
10 mA
Class C telegraphy | lg1 = 10 10 10 10 mA
Wigt
10 W
Class C telegraphy | Wigt = 10 10 10 10 W
Wia
120 W
Class C telegraphy | Wia = 250 200 160 120 W
Plate voltage
1000 V
Maximum ratings | Va = max. 1000 V Vg2 = max. 300 V
Plate voltage
300 V
Maximum ratings | Va = max. 1000 V Vg2 = max. 300 V
Wia = max
200 W
Maximum ratings | Wia = max. 200 W Wg2 = max. 12 W
Wia = max
12 W
Maximum ratings | Wia = max. 200 W Wg2 = max. 12 W
Control-grid voltage
100 W
Maximum ratings | Wa = max. 100 W -Vg 1 = max. 250 V
Control-grid voltage
250 V
Maximum ratings | Wa = max. 100 W -Vg 1 = max. 250 V
Published electrical value
1 a
Maximum ratings | 1a = max. 200 mA Wg 1 max. 2 W
Published electrical value
200 mA
Maximum ratings | 1a = max. 200 mA Wg 1 max. 2 W
Published electrical value
1 ma
Maximum ratings | 1a = max. 200 mA Wg 1 max. 2 W
Published electrical value
2 W
Maximum ratings | 1a = max. 200 mA Wg 1 max. 2 W
Plate voltage
400 V
Maximum ratings | Va = 1000 800 600 400 V
Control-grid voltage
-90 V
Maximum ratings | Vg1 = -105 -100 -95 -90 V
Vgip
110 V
Maximum ratings | Vgip = 125 120 120 110 V
Za
200 mA
Maximum ratings | Za = 200 200 200 200 mA
Published electrical value
40 mA
Maximum ratings | 182 = 20 25 35 40 mA
Published electrical value
7 mA
Maximum ratings | 1g1 = 15 10 8 7 mA
Wig
1 W
Maximum ratings | Wig1 = 2 1.5 1 1 W
Wg
10 W
Maximum ratings | Wg2 = 5 6.3 8.8 10 W
Wia
80 W
Maximum ratings | Wia = 200 160 120 80 W
Wa
25 W
Maximum ratings | Wa = 60 60 40 25W
Vg
140 V
Maximum ratings | Vg2p = 170 160 150 140 V
Wmod
40 W
Maximum ratings | Wmod = 100 80 60 40 W
f _ __ m x _
250 mA
Maximum ratings | f _ __ m x _2~0_M0/B Ia = max. 250 mA
Plate voltage
1250 V
Maximum ratings | Va = max. 1250 V Wa = max. 150 W
Plate voltage
150 W
Maximum ratings | Va = max. 1250 V Wa = max. 150 W
Screen-grid voltage
400 V
Maximum ratings | Vg2 = max. 400 V Wg2 = max. 12 W
Screen-grid voltage
12 W
Maximum ratings | Vg2 = max. 400 V Wg2 = max. 12 W
Control-grid voltage
250 V
Maximum ratings | -Vg1 = max. 250 V Wgi = max. 2W
Control-grid voltage
2 W
Maximum ratings | -Vg1 = max. 250 V Wgi = max. 2W
f
216 MHz
Maximum ratings | f 216 216 216 Mc/s
B
5 MHz
Maximum ratings | B = 5 5 5 Mc/s
Plate voltage
750 V
Maximum ratings | Va = 1250 1000 750 V
Vg
300 V
Maximum ratings | Vg2 300 300 300 V

Data set 02

1999 Philips E-Z

Published operating points and test conditions from this source.

SECTION 1

Tetrode

Characteristics

Heater/filament voltage
6 V
Heater/filament current
2.6 A
Transconductance
12000 uS
Screen-grid amplification factor
5
Typical plate voltage
500 V
Typical screen-grid voltage
250 V
Typical plate current
200 mA
Minimum waiting time
30 sec

Other

Maximum plate/anode voltage
2000 V
Maximum screen-grid voltage
300 V
Maximum plate/anode dissipation
250 W
Maximum screen-grid dissipation
12 W
Operating plate voltage
1250 V
ClassC;Telegraphy;169MHz
RF output power
195 W
ClassC;Telegraphy;169MHz
Operating plate voltage
1250 V
ClassC;Telegraphy;500MHz
RF output power
170 W
ClassC;Telegraphy;500MHz

Capacitance

Plate/anode capacitance
4.5 pF
Control-grid capacitance
15.5 pF
Plate-grid capacitance
0.03 pF