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7094

High-perveance beam-power tube for fixed and mobile RF power amplification and oscillator service, also usable as an audio power amplifier and modulator.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: SEPTAR7
Base pins: 7
Nominal heater: 6.3 V / 2.85 A

Description

7094 BEAM POWER TUBE 500 Watts CW Input (ICAS) Up to 60 Mc High Power Gain 5" Max. Length 335 Watts CW Input (ICAS) at 175 Mc Sturdy Structure . Cooled at Max. Ratings Forced-Air : .56" Max. D Diameter 2.56 TENTATIVE DATA RCA-7094 is a high—-perveance beam power tube Grid No.2 & internal shield . ; with high power gain. It is useful in fixed and toplate®. . .ovoe e w e s R . . Grid No.2 & internal shjeld mobile equipment as an rf power amplifier and to cathode and heater® . 2.8 uuf oscillator, as wel!l as Plate to cathode and heater® . . 1.8 upf an af power amplifier and P P Mechanical: modulator. . L . Operating Position . . . ¢ . . « . « v « v o« . . . Any The 7094 has a maxi-— Maximum Overall Length. . . +v o v« « « « « « « « . 5" mum plate dissipation of Seated Length. .. . . . . . . . . .. y.uu"£ 0.08" 125 watts under |CAS Maximum Diameter . . . Coe e e e e s © e . . 2.56" conditions in modulator Base . . . . . Jumbo— Button Septar 7-Pin (JETEC No.E7- 46) service and incwservice.

Socket description

Septar 7-contact base

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: SEPTAR7
Base pins: 7
Nominal heater voltage: 6.3 V
Nominal heater current: 2.85 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

Beam Power

X-ray radiationInterelectrode capacitances

Max plate voltage: 1500 V
Max screen voltage: 400 V
Max plate dissipation: 100 W
Max cathode current: 350 mA

Published ratings/characteristics promoted from supplied datasheet.

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

1940 RCA

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

500 Watts CW Input (ICAS) Up to
60 W
500 Watts CW Input (ICAS) Up to 60 Mc
335 Watts CW Input (ICAS) at
175 W
335 Watts CW Input (ICAS) at 175 Mc
mobile equipment as an rf power amplifier and to cathode and heater®
2.8 pF
mobile equipment as an rf power amplifier and to cathode and heater® . 2.8 uuf
125 watts under |CAS Maximum Diameter . . . Coe e e e e s © e
2.56 W
125 watts under |CAS Maximum Diameter . . . Coe e e e e s © e . . 2.56"
input to 60 Mc and with qU|red Under operatlng conditions at maximum
60 MHz
input to 60 Mc and with qU|red Under operatlng conditions at maximum
reduced input to 175 Mc. froma small fan to prevent exceeding the speci
175 MHz
reduced input to 175 Mc. froma small fan to prevent exceeding the speci-
tively low plate voltage ces®
1045 V
tively low plate voltage ces® 1045*®
put with small driving DC PLATE VOLTAGE 1500 max. 2000 max. volts
2000 V
put with small driving DC PLATE VOLTAGE 1500 max. 2000 max. volts
VOLTAGE. . .. . 400 max. 400 max. volts
400 V
VOLTAGE. . .. . 400 max. 400 max. volts
for its power-outputcapa- CURRENTO . . . . 350 max. 350 max. ma
350 mA
for its power-outputcapa- CURRENTO . . . . 350 max. 350 max. ma
bility, the 7094 has a MAX.—SGNAL PLATE heutO 300 max. %00 max. watts
0 W
bility, the 7094 has a MAX.—SGNAL PLATE heutO 300 max. %00 max. watts
iNPUTG L L L L 20 max. 20 max. watts
20 W
iNPUTG L L L L 20 max. 20 max. watts
PLATE DIsSSIPATIONT . 100 max. 125 max. watts
125 W
PLATE DIsSSIPATIONT . 100 max. 125 max. watts
grid No.2to permit effective rf grounding, plate VOLTAGE
2 V
grid No.2to permit effective rf grounding, plate VOLTAGE:
respect to cathode . . 135 max. 135 max. volts
135 V
respect to cathode . . 135 max. 135 max. volts
additional sturdiness to the electrode structure. respect to cathode . 135 max. 135 max. volts
135 V
additional sturdiness to the electrode structure. respect to cathode . 135 max. 135 max. volts
tion of input and output circuits. DC Plate voltage . . . . . 1500
2000 V
tion of input and output circuits. DC Plate voltage . . . . . 1500 2000 volts
DC Grid-No.2 voltage§. . 400
400 V
DC Grid-No.2 voltage§. . 400 400 volts
Grid) voltage®™. . . .. -50 —
50 V
Grid) voltage®™. . . .. -50 —50 volts
Heater, for Unipotential Cathode: Grid-No.1 Vvoltage. . . . 88
88 V
Heater, for Unipotential Cathode: Grid-No.1 Vvoltage. . . . 88 88 volts
voltage (AC or DC) « + « + « . . 6.3 t 10% volts Zero-Signal DC Plate
10 V
voltage (AC or DC) « + « + « . . 6.3 t 10% volts Zero-Signal DC Plate
Current at 6.3 volts . . . . . . 3.2 amperes Current. . . . . . . .. 60
60 V
Current at 6.3 volts . . . . . . 3.2 amperes Current. . . . . . . .. 60 60 ma
plate voits = 300, grid-No.2 Current. . . 400
400 mA
plate voits = 300, grid-No.2 Current. . . 400 400 ma
volts = 300, and plate ma= 250 . 10000 pmhos Max.-Signal DC GrldNo
2 V
volts = 300, and plate ma= 250 . 10000 pmhos Max.-Signal DC GrldNo 2
Current. . . . . « « . . 70
70 mA
Current. . . . . « « . . 70 70 ma
voits = 300, and plate ma = 250. 7 (Plate to plate) . . . . 8700
12000 mA
voits = 300, and plate ma = 250. 7 (Plate to plate) . . . . 8700 12000 ohms
with no external shield): Power (Approx.). . . . 0
0 W
with no external shield): Power (Approx.). . . . 0 0 watts
(APPFroX.)s v v v v & o . 410
560 W
(APPFroX.)s v v v v & o . 410 560 watts
Grid No.1 to cathode and heatereB 9 puf * National Company, Inc., 61 Sherman Street, Malden, Mass
61 pF
Grid No.1 to cathode and heatereB 9 puf * National Company, Inc., 61 Sherman Street, Malden, Mass.
LINEAR RF POWER AMPLIFIER Class ABI Typical Operation at {
75 MHz
LINEAR RF POWER AMPLIFIER Class ABI Typical Operation at {75 Mc:
Single-Sideband Suppressed-Carrier Service DC Plate voltage . 700
820 V
Single-Sideband Suppressed-Carrier Service DC Plate voltage . 700 820 volts
DC Grid—No.2 voltage®. 400 ) volts
400 V
DC Grid—No.2 voltage®. 400 ) volts
ccs® 045%® DC Grid-No.1 voltage*. -130
-130 V
ccs® 045%® DC Grid-No.1 voltage*. -130 -130 volts
Maximum Ratings, 4bsolute DC Plate current 250
275 mA
Maximum Ratings, 4bsolute DC Plate current 250 275 ma
Values wp to
60 MHz
Values wp to 60 Mc:
DC Grid-No.2 Current . . . . 8
8 mA
DC Grid-No.2 Current . . . . 8 8 ma
DC PLATE VOLTAGE 1500 max. 2000 max. volts DC Grid-No
1 V
DC PLATE VOLTAGE 1500 max. 2000 max. volts DC Grid-No.1 current
DC GRID-No.?2 (SCREEN) (Approx.)e « + v v v . . . 6
6 mA
DC GRID-No.?2 (SCREEN) (Approx.)e « + v v v . . . 6 6 ma
VOLTAGE. . . . - 400 max. 400 max. volts
400 V
VOLTAGE. . . . - 400 max. 400 max. volts
MAX.=SIGNAL DC PLATE (Approx.) E‘ . 8
8 W
MAX.=SIGNAL DC PLATE (Approx.) E‘ . 8 8 watts
CURRENT . . . - 350 max. 350 max. ma Output— c|rcu|t Eff|C|ency
350 mA
CURRENT . . . - 350 max. 350 max. ma Output— c|rcu|t Eff|C|ency
MAX.—SIGNAL PLATE INPUT 300 max. 400 max. watts (Approx.). . . 85
3 W
MAX.—SIGNAL PLATE INPUT 300 max. 400 max. watts (Approx.). . . 85 85 3
MAX.—SIGNAL GRID-No.2 INPUT 20 max. 20 max. watts Useful Power Output )
20 W
MAX.—SIGNAL GRID-No.2 INPUT 20 max. 20 max. watts Useful Power Output )
PLATE DISSIPATION . 100 max. 125 max. watts (Approx.). . . e 105%# 13 5% watts
5 W
PLATE DISSIPATION . 100 max. 125 max. watts (Approx.). . . e 105%# 13 5% watts
respect to cathode . . 135 max. 135 max. volts Grid-No
1 V
respect to cathode . . 135 max. 135 max. volts Grid-No.1=Cigcuit
Heater positive with Resistancei 30000 max. 30000 max. ohms
30000 ohm
Heater positive with Resistancei 30000 max. 30000 max. ohms
Typical Operation for "Single-Tone Modulation™ atGOMc:“ RF POWER AMPLIFIER & 0SC.--Class € Telegraph
0
Typical Operation for "Single-Tone Modulation™ atGOMc:“ RF POWER AMPLIFIER & 0SC.--Class € Telegraphyt
DC Plate voltage 1500 2000 volts and
2000 V
DC Plate voltage 1500 2000 volts and
DC Grid-No.2 VOltage§ %00 400 volts RF POWER AMPLIFIER--Class C FM Telephony
400 V
DC Grid-No.2 VOltage§ %00 400 volts RF POWER AMPLIFIER--Class C FM Telephony
voltage™. . . . . -50 =
50 V
voltage™. . . . . -50 =50 volts
No.1 voltage . . . .. ny yu volts For max. plate voltage and max. plate input above
60 V
No.1 voltage . . . .. ny yu volts For max. plate voltage and max. plate input above 60 Mc,
Zero—Signal DC Plate Current 30 30 ma see Rating Chart II
30 mA
Zero—Signal DC Plate Current 30 30 ma see Rating Chart II
Max.-Signal DC Plate Current 200 200 ma DC PLATE VOLTAGE 1250 max. 1500 max. volts
1500 V
Max.-Signal DC Plate Current 200 200 ma DC PLATE VOLTAGE 1250 max. 1500 max. volts
Current. . . N . 35 35 ma VOLTAGE. . . 400 max. 400 max. volts
400 V
Current. . . N . 35 35 ma VOLTAGE. . . 400 max. 400 max. volts
Effective RF Load Resnstance 4350 6000 ohms DC GRID-No.1 (CONTROL GRID)
1 ohm
Effective RF Load Resnstance 4350 6000 ohms DC GRID-No.1 (CONTROL GRID)
Max.-Signal Driver Power VOLTAGE. . =300 max. ~300 max. volts
300 V
Max.-Signal Driver Power VOLTAGE. . =300 max. ~300 max. volts
cutput (Approx.) . . . y y watts OC PLATE CURRENT - P 340 max. 340 max. ma
340 mA
cutput (Approx.) . . . y y watts OC PLATE CURRENT - P 340 max. 340 max. ma
OQutput—Circuit Eff|C|ency DC GRiD—No.1 CURRENT . . . . 25 max. 30 max. ma
30 mA
OQutput—Circuit Eff|C|ency DC GRiD—No.1 CURRENT . . . . 25 max. 30 max. ma
PLATE INPUT. e e e . 375 max. 500 max. watts
500 W
PLATE INPUT. e e e . 375 max. 500 max. watts
Output (APProx.) . . . . . 185" 250% watts GR1D-No.2 INPUT. . . . . . . 20 max. 20 max. watts
20 W
Output (APProx.) . . . . . 185" 250% watts GR1D-No.2 INPUT. . . . . . . 20 max. 20 max. watts
PLATE DISSIPATION. - 100 max. 125 max. watts
125 W
PLATE DISSIPATION. - 100 max. 125 max. watts
Class C Telephony respect to cathode . 135 max. 135 max. volts
135 V
Class C Telephony respect to cathode . 135 max. 135 max. volts
a max. modulation factor of 1.0 respect to cathode . 135 max. 135 max. volts
135 V
a max. modulation factor of 1.0 respect to cathode . 135 max. 135 max. volts
cos® 1c45%® Typical Operation at
60 MHz
cos® 1c45%® Typical Operation at 60 Mc:
DC Plate voltage . . . . 1000 1250
1500 V
DC Plate voltage . . . . 1000 1250 1500 volts
For max. plate voltage and max. plate input above 60 Mc, De Grid-No.2 voltageBE. . . w00 w00
400 V
For max. plate voltage and max. plate input above 60 Mc, De Grid-No.2 voltageBE. . . w00 w00 400 volts
DC Grid-No.1 voltage®® . . . -100 -100 |
-100 V
DC Grid-No.1 voltage®® . . . -100 -100 | -100 volts
DC PLATE VOLTAGE . . . . . . 1000 max. 1200 max. volts Peak RF Grid-No.1l voltage. 125 120
125 V
DC PLATE VOLTAGE . . . . . . 1000 max. 1200 max. volts Peak RF Grid-No.1l voltage. 125 120 125 volts
DC GRID-No.2 (SCREEN) pC Plate current 330 300
330 mA
DC GRID-No.2 (SCREEN) pC Plate current 330 300 330 ma
VOLTAGE. « « & & & & v o« & 400 max. 400 max. volts
400 V
VOLTAGE. « « & & & & v o« & 400 max. 400 max. volts
DC Grid-No.2 current . . . . 20 18
20 mA
DC Grid-No.2 current . . . . 20 18 20 ma
VOLTAGE. « « « « + » « . . =300 max. =300 max. volts DC Grid-No,
1 V
VOLTAGE. « « « « + » « . . =300 max. =300 max. volts DC Grid-No,1 Current
OC PLATE CURRENT . . . . . . 280 max. 280 max. ma
280 mA
OC PLATE CURRENT . . . . . . 280 max. 280 max. ma
(approx.). . P 5 5
5 mA
(approx.). . P 5 5 5 ma
DC GRID—No.1 CURRENT . . . . 25 max. 30 max. ma
30 mA
DC GRID—No.1 CURRENT . . . . 25 max. 30 max. ma
PLATE INPUT. 250 max. 335 max. watts
335 W
PLATE INPUT. 250 max. 335 max. watts
GRID-No.2 {NPUT. . . 13.5 max. 13.5 max. watts (Approx.). . . 90 90
3 W
GRID-No.2 {NPUT. . . 13.5 max. 13.5 max. watts (Approx.). . . 90 90 90 3
PLATE DISSIPATION. . . 67 max. 83 max. watts Useful Power Output _
83 W
PLATE DISSIPATION. . . 67 max. 83 max. watts Useful Power Output _
PEAK HEATER-CATHODE VOLTAGE (Approx.). 216% 225% |
3409 V
PEAK HEATER-CATHODE VOLTAGE (Approx.). 216% 225% | 3409 watts
respect to cathode 135 max. 135 max. volts Typical Operation at
175 V
respect to cathode 135 max. 135 max. volts Typical Operation at 175 Mc:
Heater positive with DC Plate voltage . 665 875
1000 V
Heater positive with DC Plate voltage . 665 875 1000 volts
respect to cathode 135 max. 135 max. volts
135 V
respect to cathode 135 max. 135 max. volts
DC Grid-No.2 vo1tageDD 400 400
400 V
DC Grid-No.2 vo1tageDD 400 400 400 volts
Typical Operation at 60 Mc: DC Grid-No.1 voltage®®. -100 -100 [
-100 V
Typical Operation at 60 Mc: DC Grid-No.1 voltage®®. -100 -100 [ -100 volts
DC Plate voltage . . . . . 1000 1200 volts DC Plate current .. 335 300
335 V
DC Plate voltage . . . . . 1000 1200 volts DC Plate current .. 335 300 335 ma
OC Grid-No.2 voltage®. . . . 100 400 volts DC Grid-No.2 current . . . . 8 7
8 V
OC Grid-No.2 voltage®. . . . 100 400 volts DC Grid-No.2 current . . . . 8 7 8 ma
D¢ Grid-No.1 voltageX*. . . . -130 130 volts C Grid-No,
1 V
D¢ Grid-No.1 voltageX*. . . . -130 130 volts C Grid-No,1 current
(Approx.). . P 5 5
5 mA
(Approx.). . P 5 5 5 ma
Peak RF Grid-No.1 voltage. 145
150 V
Peak RF Grid-No.1 voltage. 145 150 volts

Characteristic

for plate volts = 300, grid-No.2 Effective Load Resistance
2 V
for plate volts = 300, grid-No.2 Effective Load Resistance

Data set 02

1971 RCA HB3 Binder 6 of 7

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

Maximum DC Plate Voltage
1500 V
CCS linear RF service
Maximum DC Screen Voltage
400 V
CCS linear RF service
Maximum-Signal DC Plate Current
350 mA
CCS linear RF service
Plate Dissipation
100 W
CCS linear RF service
Typical DC Plate Voltage
1350 V
CCS linear RF service
Typical Useful Power Output
160 W
CCS linear RF service

Characteristics

Mu Factor, Screen to Control Grid
7
CCS linear RF service
Grid-No.1 to Plate Capacitance
0.6 pF
CCS linear RF service
Grid-No.1 to Cathode/Heater Capacitance
8.5 pF
CCS linear RF service
Grid-No.2 to Plate Capacitance
9.5 pF
CCS linear RF service