Data set 01
1962 ITT
Published operating points and test conditions from this source.
TravelingWave
Other
The F [1]
7338
The F-7338 is a 1 kilowatt pulse traveling wave amplifier tube having 40 db gain
The F [2]
1
The F-7338 is a 1 kilowatt pulse traveling wave amplifier tube having 40 db gain
The F [3]
40
The F-7338 is a 1 kilowatt pulse traveling wave amplifier tube having 40 db gain
and [1]
2000
and 2000 to 4000 mc frequency range. It is constructed in a rugged metal envelope
and [2]
4000
and 2000 to 4000 mc frequency range. It is constructed in a rugged metal envelope
Published value [1]
5
.005 and pulse lengths up to 10 microseconds can be used.
Published value [2]
10
.005 and pulse lengths up to 10 microseconds can be used.
Heater Voltage [1]
6.3 V
Heater Voltage 6.3 (£10%) volts
Heater Voltage [2]
10 V
Heater Voltage 6.3 (£10%) volts
Heater Current
5 A
Heater Current 5.0 amperes
Maximum Anode Voltage (Note [1]
1 V
Maximum Anode Voltage (Note 1) 8500 volts
Maximum Anode Voltage (Note [2]
8500 V
Maximum Anode Voltage (Note 1) 8500 volts
Maximum Shell Current (Note [1]
2 A
Maximum Shell Current (Note 2) 0.5 ampere peak
Maximum Shell Current (Note [2]
500 mA
Maximum Shell Current (Note 2) 0.5 ampere peak
Maximum Collector Voltage (Note [1]
3 V
Maximum Collector Voltage (Note 3) 9000 volts
Maximum Collector Voltage (Note [2]
9000 V
Maximum Collector Voltage (Note 3) 9000 volts
Maximum Collector Dissipation (Note [1]
4 W
Maximum Collector Dissipation (Note 4) 100 watts avg.
Maximum Collector Dissipation (Note [2]
100 W
Maximum Collector Dissipation (Note 4) 100 watts avg.
Maximum R-F Input Power
10 W
Maximum R-F Input Power 10 watts avg.
Maximum R-F Output Power
10 W
Maximum R-F Output Power 10 watts avg.
Maximum Pulse Width (Beam)
10
Maximum Pulse Width (Beam) 10 p sec,
Maximum Cathode Current
2.5 A
Maximum Cathode Current 2.5 amperes peak
Positive (Note [1]
7 V
Positive (Note 7) +6% of anode voltage
Positive (Note [2]
6 V
Positive (Note 7) +6% of anode voltage
Maximum Frequency (Note [1]
5
Maximum Frequency (Note 5) 2000 mc
Maximum Frequency (Note [2]
2000
Maximum Frequency (Note 5) 2000 mc
Minimum Frequency (Note [1]
5
Minimum Frequency (Note 5) 4000 mc
Minimum Frequency (Note [2]
4000
Minimum Frequency (Note 5) 4000 mc
Capacitance - control grid to all other elements
9 pF
Capacitance - control grid to all other elements 9 ppfd
Air flow on Collector Radiator (Note [1]
4
Air flow on Collector Radiator (Note 4) 20 cfm
Air flow on Collector Radiator (Note [2]
20
Air flow on Collector Radiator (Note 4) 20 cfm
Glass Temperature
1600
Glass Temperature 1600C max.
Center Frequency
3000
Center Frequency 3000 mc
Anode Voltage (Note [1]
1 V
Anode Voltage (Note 1) 7800 wvolts
Anode Voltage (Note [2]
7800 V
Anode Voltage (Note 1) 7800 wvolts
Cathode Current
1.8 A
Cathode Current 1.8 amperes peak
Collector Voltage (tied to shell)
7500 V
Collector Voltage (tied to shell) 7500 volts
Collector Current
1.4 A
Collector Current 1.4 amperes peak
Power Output (at center frequency)
1.8 kW
Power Output (at center frequency) 1.8 kw peak
Bandwidth (Note [1]
6
Bandwidth (Note 6) 2.0to 4.0 kmc
Bandwidth (Note [2]
2
Bandwidth (Note 6) 2.0to 4.0 kmc
Bandwidth (Note [3]
4
Bandwidth (Note 6) 2.0to 4.0 kmc
Gain (Note [1]
6
Gain (Note 6) 40 db
Gain (Note [2]
40
Gain (Note 6) 40 db
Pulse Width
2
Pulse Width 2 p sec,
Grid Bias (for cut-off)
-100
Grid Bias (for cut-off) -100 volts
Grid Voltage during Pulse (Note [1]
8 V
Grid Voltage during Pulse (Note 8) +350 wvolts
Grid Voltage during Pulse (Note [2]
350 V
Grid Voltage during Pulse (Note 8) +350 wvolts
Grid Current during Pulse
100 mA
Grid Current during Pulse 0.1 amperes peak
Note
1 V
Note 1: All voltages shown are with respect to cathode. Anode and helix are con-
Note
2 A
Note 2: The shell current is the difference between cathode current and collector
Note
3
Note 3: The tube may be operated with the collector tied to the shell (anode and
Note
4 W
Note 4: Forced air cooling is required for average collector power in excess
of
10 W
of 10 watts. As the collector power is increased, the air flow re-
quired increases., At the maximum collector power of
100 W
quired increases., At the maximum collector power of 100 watts, a
Note [1]
5 W
Note 5: Useful gain and power output exists below 2000 mc and above 4000 mc
Note [2]
2000 W
Note 5: Useful gain and power output exists below 2000 mc and above 4000 mc
Note [3]
4000 W
Note 5: Useful gain and power output exists below 2000 mc and above 4000 mc
Note
6 W
Note 6: The following gain, power, bandwidth relations apply: The minimum
power and gain is [1]
1 kW
power and gain is 1 kw at 40 db from 2400 to 3600 mc, and 500 watts
power and gain is [2]
40 kW
power and gain is 1 kw at 40 db from 2400 to 3600 mc, and 500 watts
power and gain is [3]
2400 kW
power and gain is 1 kw at 40 db from 2400 to 3600 mc, and 500 watts
power and gain is [4]
3600 kW
power and gain is 1 kw at 40 db from 2400 to 3600 mc, and 500 watts
power and gain is [5]
500 kW
power and gain is 1 kw at 40 db from 2400 to 3600 mc, and 500 watts
at [1]
37
at 37 db from 2000 to 4000 mc. Small signal gain is less than 50 db
at [2]
2000
at 37 db from 2000 to 4000 mc. Small signal gain is less than 50 db
at [3]
4000
at 37 db from 2000 to 4000 mc. Small signal gain is less than 50 db
at [4]
50
at 37 db from 2000 to 4000 mc. Small signal gain is less than 50 db
over the operating bandwidth, Saturated power output of at least
1 kW
over the operating bandwidth, Saturated power output of at least 1 kw
can be obtained from [1]
2200
can be obtained from 2200 to 4000 mc. Bandwidth between 6 db small
can be obtained from [2]
4000
can be obtained from 2200 to 4000 mc. Bandwidth between 6 db small
can be obtained from [3]
6
can be obtained from 2200 to 4000 mc. Bandwidth between 6 db small
signal points is greater than [1]
500
signal points is greater than 500 mc and bandwidth between 10 db
signal points is greater than [2]
10
signal points is greater than 500 mc and bandwidth between 10 db
Note
7 V
Note 7: Positive voltage must not be applied to the grid in the absence of anode
Note
8 V
Note 8: The positive grid voltage pulse should be the minimum consistent with
( [1]
1 V
(1) Heater warm up of 2 minutes before applying high voltage is recommended.
( [2]
2 V
(1) Heater warm up of 2 minutes before applying high voltage is recommended.
(
2 V
(2) High voltage must not be applied in the absence of proper grid bias and
Published value
1
.1 watt input '\\\np“t
ANODE [1]
9
ANODE 9. 625 21/251/16
ANODE [2]
625
ANODE 9. 625 21/251/16
ANODE [3]
21
ANODE 9. 625 21/251/16
ANODE [4]
251
ANODE 9. 625 21/251/16
ANODE [5]
16
ANODE 9. 625 21/251/16
c =
15
c = 15 COLLECTOR CON-
Published value
16
16 OUTPUT NECTOR
Published value
20
20 % INPUT
= [1]
5
=5 2 HEATER CATHODE
= [2]
2
=5 2 HEATER CATHODE
Published value [1]
5
5 & 6 CONTROL GRID
Published value [2]
6
5 & 6 CONTROL GRID
gO
10
gO 10 HEATER