Data set 01
1962 ITT
Published operating points and test conditions from this source.
TravelingWave
Other
The F [1]
6658
The F-6658 is a 1 to 5 watt CW traveling wave amplifier tube having 30 db gain and
The F [2]
1
The F-6658 is a 1 to 5 watt CW traveling wave amplifier tube having 30 db gain and
The F [3]
5
The F-6658 is a 1 to 5 watt CW traveling wave amplifier tube having 30 db gain and
The F [4]
30
The F-6658 is a 1 to 5 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 (x10%) volts
Heater Voltage [2]
0 V
Heater Voltage 6.3 (x10%) volts
Heater Current
2.5 A
Heater Current 2.5 amperes
Maximum Anode Voltage (Note [1]
1 V
Maximum Anode Voltage (Note 1) 1250 wvolts
Maximum Anode Voltage (Note [2]
1250 V
Maximum Anode Voltage (Note 1) 1250 wvolts
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) 1550 volts
Maximum Collector Voltage (Note [2]
1550 V
Maximum Collector Voltage (Note 3) 1550 volts
Maximum Collector Dissipation (Note [1]
4 W
Maximum Collector Dissipation (Note 4) 100 watts
Maximum Collector Dissipation (Note [2]
100 W
Maximum Collector Dissipation (Note 4) 100 watts
Maximum Control Electrode Voltage (Note [1]
5 V
Maximum Control Electrode Voltage (Note 5) -250 volts
Maximum Control Electrode Voltage (Note [2]
-250 V
Maximum Control Electrode Voltage (Note 5) -250 volts
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
1000 V
Anode Voltage 1000 volts
Shell Current
3 A
Shell Current 3 ma
Collector Voltage
1100 V
Collector Voltage 1100 volts
Collector Current
47 A
Collector Current 47 ma
Control Electrode Voltage
0 V
Control Electrode Voltage 0 volts
Power Output (see Curves)
1 W
Power Output (see Curves) 1 watt
Gain (see Curves)
30
Gain (see Curves) 30 db nominal
Beam
1
Beam 1.0
(Input powers less than
-10 W
(Input powers less than -10 dbm)
Anode Voltage
900 V
Anode Voltage 900 volts
Shell Current
2 A
Shell Current 2.0 ma
Collector Voltage
1000 V
Collector Voltage 1000 volts
Collector Current
40 A
Collector Current 40 ma
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 arrent and col-
the shell current exceeds
5 A
the shell current exceeds 5 milliamperes.
Note [1]
3
Note 3: It is generally desirable to operate the collector at 100 to 200 volts posi-
Note [2]
100
Note 3: It is generally desirable to operate the collector at 100 to 200 volts posi-
Note [3]
200
Note 3: It is generally desirable to operate the collector at 100 to 200 volts posi-
Note
4 W
Note 4: Forced air cooling of collector is required for average collector power in
excess of
10 W
excess of 10 watts. As the collector power is increased, the air flow
required increases. At the maximum collector power of
100 W
required increases. At the maximum collector power of 100 watts, a
Note
5
Note 5: This electrode is a remote cutoff grid, suitable for use as a gain control
( [1]
2 V
(2) Turn on cooling air, solenoid voltage (adjust to approximately 750 gauss),
( [2]
750 V
(2) Turn on cooling air, solenoid voltage (adjust to approximately 750 gauss),
(
3 V
(3) Raise high voltage to desired value, readjusting magnetic field if necessary to
obtain minimum shell current, At no time should shell current exceed
5 A
obtain minimum shell current, At no time should shell current exceed 5 ma.
(
4 V
(4) After initial set up as above, tube voltages may be applied simultaneously;
air be supplied at least
2 V
air be supplied at least 2 minutes before applying high voltage. Observance of
the
5 A
the 5 ma maximum limit for shell current is essential to prevent tube damage.
Gain
50
Gain 50 T T T
Published value
40
40 Gain vs, Control D
Pin .= [1]
1 A
Pin .= 1 mw current in range of 600 to 750
Pin .= [2]
600 A
Pin .= 1 mw current in range of 600 to 750
Pin .= [3]
750 A
Pin .= 1 mw current in range of 600 to 750
maximum gain at f =
40 MHz
maximum gain at f = 4,0 KMC,
Published value
8
8 Small Signal Gain