Data set 01
1962 ITT
Published operating points and test conditions from this source.
TravelingWave
Other
The F [1]
6868
The F-6868 is a 10 watt CW traveling wave amplifier tube having 30 db gain and
The F [2]
10
The F-6868 is a 10 watt CW traveling wave amplifier tube having 30 db gain and
The F [3]
30
The F-6868 is a 10 watt CW traveling wave amplifier tube having 30 db gain and
Published value [1]
1700 MHz
1700 to 4000 mc frequency range. It is constructed in a rugged metal envelope
Published value [2]
4000 MHz
1700 to 4000 mc frequency range. It is constructed in a rugged metal envelope
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
25 A
Heater Current 2,5 amperes
Maximum Anode Voltage (Note [1]
1 V
Maximum Anode Voltage (Note 1) 1500 volts
Maximum Anode Voltage (Note [2]
1500 V
Maximum Anode Voltage (Note 1) 1500 volts
Maximum Shell Current (Note [1]
2 A
Maximum Shell Current (Note 2) 5 ma
Maximum Shell Current (Note [2]
5 A
Maximum Shell Current (Note 2) 5 ma
Maximum Collector Voltage (Note [1]
3 V
Maximum Collector Voltage (Note 3) 1750 volts
Maximum Collector Voltage (Note [2]
1750 V
Maximum Collector Voltage (Note 3) 1750 volts
Maximum Collector Dissipation (Note [1]
4 W
Maximum Collector Dissipation (Note 4) 150 watts
Maximum Collector Dissipation (Note [2]
150 W
Maximum Collector Dissipation (Note 4) 150 watts
Maximum Control Electrode Voltage (Note [1]
5 V
Maximum Control Electrode Voltage (Note 5) -250 watts
Maximum Control Electrode Voltage (Note [2]
-250 V
Maximum Control Electrode Voltage (Note 5) -250 watts
Maximum Frequency
4000 MHz
Maximum Frequency 4000 mc
Minimum Frequency
1700 MHz
Minimum Frequency 1700 mc
Glass Temperature
160
Glass Temperature 160°C max.
Anode Voltage
1200 V
Anode Voltage 1200 volts
Shell Current
3 A
Shell Current 3 ma
Collector Voltage
1400 V
Collector Voltage 1400 volts
Collector Current
70 A
Collector Current 70 ma
Control Electrode Voltage
0 V
Control Electrode Voltage 0 volts
Power Output {see Curves)
10 W
Power Output {see Curves) 10 watts nominal
Gain (see Curves)
30
Gain (see Curves) 30 db nominal
Beam
10
Beam 1,0
(Input powers less than ~
10 W
(Input powers less than ~10 dbm)
Anode Voltage
1150 V
Anode Voltage 1150 wvolts
Shell Current
2.5 A
Shell Current 2.5 ma
Collector Voltage
1400 V
Collector Voltage 1400 wvolts
Collector Current
67 A
Collector Current 67 ma
Control Electrode Voltage
0 V
Control Electrode Voltage 0 wvolts
Gain (see Curves)
35
Gain (see Curves) 35 db nominal
Beam
1
Beam 1.0
Note
1 V
Note 1: All voltages shown are with respect to cathode. Anode and helix are
Note
2 A
Note 2: The shell current is the difference between the cathode current and
high voltage if the shell current exceeds
5 V
high voltage if the shell current exceeds 5 ma,
Note [1]
3
Note 3: It is generally desirable to operate the collector at 100 to 200 volts
Note [2]
100
Note 3: It is generally desirable to operate the collector at 100 to 200 volts
Note [3]
200
Note 3: It is generally desirable to operate the collector at 100 to 200 volts
collector and shell should be limited to
300
collector and shell should be limited to 300 volts maximum,
Note
4
Note 4: Forced air cooling of collector is required for average collector
power in excess of
10 W
power in excess of 10 watts., As the collector power is increased,
Note
5
Note 5: This electrode is a remote cutoff grid, suitable for use as a gain
small negative voltage on this electrode ( [1]
-5 V
small negative voltage on this electrode (-5 to -10 volts) as this
small negative voltage on this electrode ( [2]
-10 V
small negative voltage on this electrode (-5 to -10 volts) as this
( [1]
2 V
(2) Turn on cooling air, solenoid voltage (adjust to approximately 1000 gauss),
( [2]
1000 V
(2) Turn on cooling air, solenoid voltage (adjust to approximately 1000 gauss),
(
3 V
(3) Raise high voltage to desired value, readjusting magnetic field if necessary
(
4 V
(4) After initial set up as above, tube voltages may be applied simultaneous-
voltage., Observance of the
5 V
voltage., Observance of the 5 ma maximum limit for shell current is
Published value
2
2 set for maximum gain at
Published value
10
10 vs. Frequency
Published value [1]
2
2 2 HEATER-CATHODE
Published value [2]
2
2 2 HEATER-CATHODE
~
10
~ 10 HEATER
A) HEATER voLTAGE (
6.3 V
A) HEATER voLTAGE (6.3 vouTts).
D) COLLECTOR VOLTAGE (}
150 V
D) COLLECTOR VOLTAGE (}150 VOLTS WITH RESPECT TO SHELL).
Published value [1]
3 A
3.0 MA. [T 1S POSSIBLE FOR HELIX CURRENT TO READ NEGATIVE WITHOUT
Published value [2]
1 A
3.0 MA. [T 1S POSSIBLE FOR HELIX CURRENT TO READ NEGATIVE WITHOUT
Published value [1]
5
5. R.F. INPUT TO THE TUBE SHOULD BE LIMITED TO 1.0 wATT AND R.F. outpPuTr
Published value [2]
1
5. R.F. INPUT TO THE TUBE SHOULD BE LIMITED TO 1.0 wATT AND R.F. outpPuTr
Published value
6 V
6. THE CATHODE VOLTAGE MAY BE ADJUSTED FOR OPTIMUM POWER OUTPUT AT THE
Published value [1]
1
1. NEVER OPERATE THE F-6868 wiTHOUT PROPER COOLING OF THE COLLECTOR: 50
Published value [2]
6868
1. NEVER OPERATE THE F-6868 wiTHOUT PROPER COOLING OF THE COLLECTOR: 50
Published value [3]
50
1. NEVER OPERATE THE F-6868 wiTHOUT PROPER COOLING OF THE COLLECTOR: 50
Published value [1]
3 A
3. NeVER OPERATE THE F-6868 wiTH HELIX CURRENT IN EXCESS OF 3.0 MA. UNDER
Published value [2]
6868 A
3. NeVER OPERATE THE F-6868 wiTH HELIX CURRENT IN EXCESS OF 3.0 MA. UNDER
Published value [3]
3 A
3. NeVER OPERATE THE F-6868 wiTH HELIX CURRENT IN EXCESS OF 3.0 MA. UNDER
MOST CONDITIONS HELIX CURRENT WiLL BE [1]
1 A
MOST CONDITIONS HELIX CURRENT WiLL BE 1.0 MA OR LESS., |IT 1S IMPORTANT
MOST CONDITIONS HELIX CURRENT WiLL BE [2]
1 A
MOST CONDITIONS HELIX CURRENT WiLL BE 1.0 MA OR LESS., |IT 1S IMPORTANT
HEATER ©O
10
HEATER ©O 10 I |
O - Bi1As SupPLY " HEL1X CURRENT [1]
0 mA
O - Bi1As SupPLY " HEL1X CURRENT 0-100 MA
O - Bi1As SupPLY " HEL1X CURRENT [2]
-100 A
O - Bi1As SupPLY " HEL1X CURRENT 0-100 MA
Published value
9
9 COLLECTOR SuPPLY
Pin
2
Pin 2 « Heater CATHODE
Pin
10 A
Pin 10 - HeaTER B. HELIX CURRENT OVERLOAD