Data set 01
1940 RCA
Published operating points and test conditions from this source.
Beam Power
Other
Coaxial-Electrode Structure Less Than
2.26 s
Coaxial-Electrode Structure Less Than 1-Second Warm-Up 2.26" Max. Length
Ceramic-Metal Seals For Use in Low-Voltage Mobile
1.44 V
Ceramic-Metal Seals For Use in Low-Voltage Mobile 1.44"
Mesh Filament Equipment Up to
500 MHz
Mesh Filament Equipment Up to 500 Mc Conduction Cooled
In CW operation with a Voltage (ACor DC}
2.9 V
In CW operation with a Voltage (ACor DC}. . . . . . . . 2.9 volts
plate voltage of only
4.6 V
plate voltage of only 700 Current at 2.9 volts. . . . . . . 4.6 amp
volts, the
1 V
volts, the 8462 can provide Minimum heating time. . .less than 1@ sec
110 watts at 50 Mc, 105 See further information on Filament
105 W
110 watts at 50 Mc, 105 See further information on Filament
watts at
85 W
watts at 175 Mc, and 85 under Electrical Considerations.
No.l for plate volts =
250 V
No.l for plate volts = 250,
Less than one-sec- grid-No
200 s
Less than one-sec- grid-No.2 volts = 200, and
ond is required from plate amperes =
11 A
ond is required from plate amperes = 1.2 . ., ., . . . . 11
fast warm-up eiiminates stand-by filament power Grid No.l to plate
0.13 pF
fast warm-up eiiminates stand-by filament power Grid No.l to plate. . . . 0.13 max. pf
in "push-to-talk" emergency equipment. Grid No.l to cathode
16 pF
in "push-to-talk" emergency equipment. Grid No.l to cathode. . . . . . 16 pf
Plate to cathode
0.03 pF
Plate to cathode. . . . . . . 0.03 max. pf
The heating time of the mesh filament, however, Grid No.l to grid No
22 pF
The heating time of the mesh filament, however, Grid No.l to grid No.2. . . . . . 22 pf
1s a function of filament voltage and the impedance Grid No.2 to plate
7 V
1s a function of filament voltage and the impedance Grid No.2 to plate. . . . . . . . 7 pf
of the filament power supply. To achieve the Grid No
3 pF
of the filament power supply. To achieve the Grid No.2 to cathode. . . . . . . 3 pf
less than
2.26 s
less than 100 milliseconds, is also possible by the Maximum Overall Length. . . . . . 2.26"
and lower filament-voltage gradient than con- (All Terminals)
250 V
and lower filament-voltage gradient than con- (All Terminals). . . . 250 max. C
Single-Sideband Suppressed-Carrier Service In Grid=Drive Circuit at
50 MHz
Single-Sideband Suppressed-Carrier Service In Grid=Drive Circuit at 50 Mc
Peak envelope conditions for a signal havin DC Plate Voltage. « « « + « . «
700 V
Peak envelope conditions for a signal havin DC Plate Voltage. « « « + « . « . . 300 700 volts
a minimum peak-to-average power ratio of DC Grid-No
175 V
a minimum peak-to-average power ratio of DC Grid-No.2 Voltage. . . . . . . . 160 175 volts
Maximum CCS Ratings,
-10 V
Maximum CCS Ratings, 4bsolute-Maximum Values: DC Grid-No.l Voltage. . . . . . . . -10 -10 volts
DC Plate Current
300 mA
DC Plate Current. . . . . . . . . . 300 300 ma
Up to
500 MHz
Up to 500 Mc
DC Grid-No
25 mA
DC Grid-No.2 Current. . . . . . . . 25 25 ma
DC PLATE VOLTAGE
2200 V
DC PLATE VOLTAGE. 2200 max. volts
DC Grid-No.l Current
50 mA
DC Grid-No.l Current. . . . . . . . 50 50 ma
DC GRID-No
400 V
DC GRID-No.2 VOLTAGE. 400 max. volts
Driver Power Output (Approx.)™
1.2 W
Driver Power Output (Approx.)™. . . 1.2, 1.2, watts
DC GRID-No.l VOLTAGE
-100 V
DC GRID-No.l VOLTAGE. -100 max. volts
Useful Power Output
110 W
Useful Power Output . . . . . . . . 854 110 watts
OF ENVELOPE
450 mA
OF ENVELOPE . . . . 450 max. ma
In Grid-Drive Circuit at
175 MHz
In Grid-Drive Circuit at 175 Mc
DC GRID-No
100 mA
DC GRID-No.1l CURRENT. 100 . max. ma
PLATE DISSIPATION
700 W
PLATE DISSIPATION . 1009 max. watts DC Plate Voltage. . . . . . . . . . 500 700 volts
GRID No
200 W
GRID No.2 INPUT . 8 max. watts DC Grid-No.2 Voltage. . . . . . . . 200 200 wvolts
DC Grid-No.l Voltage.,
-30 V
DC Grid-No.l Voltage., . . . . . . . -30 -30 volts
Typical CCS Operation with "Two-Tone Modulation": DC Plate Current
300 mA
Typical CCS Operation with "Two-Tone Modulation": DC Plate Current. . . . . . . . . . 300 300 ma
At 30 Mc DC Grid-No.2 Current. . . . . . . & 30 20 ma
20 MHz
At 30 Mc DC Grid-No.2 Current. . . . . . . & 30 20 ma
DC Plate Voltage
40 V
DC Plate Voltage. 700 volts DC Grid-No.l Current. . . . . . . . 40 40 ma
DC Grid-No
3 V
DC Grid-No.2 Voltage 250 volts Driver Power Output {Approx.)™. . . 3, 3. watts
DC Grid-No.l Voltage
1050 V
DC Grid-No.l Voltage . -20 volts Useful Power Output . . . . . . . . 704 1050 watts
Zero-Signal DC Plate Current
100 mA
Zero-Signal DC Plate Current. 100 ma
DC Plate Current at Peak DC Plate Voltage
700 V
DC Plate Current at Peak DC Plate Voltage. . . . . . . . . . . .. 700 volts
of Envelope
200 V
of Envelope . . 205 DC Grid-No.2 Voltage. . . . . . . . . . . 200 wvolts
Average DC Plate Current
-30 V
Average DC Plate Current 150 DC Grid-No.l Voltage. . . . . . . . . .. -30 volts
DC Grid-No
300 mA
DC Grid-No.2 Current at DC Plate Current. « « « « v &« v o « « « & 300 ma
DC Grid-No
10 mA
DC Grid-No.2 Current. . « « « « « « & + & 10 ma
DC Grid-No.l Current. . . e e e e
20 mA
DC Grid-No.l Current. . . e e e e 20 ma
Driver Power Output (Approx.)m
5 W
Driver Power Output (Approx.)m ...... 5. watts
Output (Approx.) PN
0.3 W
Output (Approx.) PN . 0.3 watt
Useful Power Output
85 W
Useful Power Output . . . . . . . . . . . 85 watts
With fixed bias. . . . PN
25000 ohm
With fixed bias. . . . PN 25,000 max. ohms
Useful Power Output (Approx) . Grid-No
10000 ohm
Useful Power Output (Approx) . Grid-No.2 Circuit Impedance e 10,000 max. ohms
Average
404 W
Average . 404 watts
Peak envelope
80 W
Peak envelope . 80J watts
With fixed bias
5.6 ohm
With fixed bias . . . 25,000 max. ohms 1. Filament Current, . . . . 1 3.6 5.6 amp
With cathode bias . . Not recommended Grid No.l to plate
0.13 pF
With cathode bias . . Not recommended Grid No.l to plate. . 2 - 0.13 pf
Grid-No
18.5 ohm
Grid-No.2 Circuit Impedance . 10,000 ohms Grid No.l to cathode . 2 14 18.5 pf
Plate Circuit Impedance . See Note k Plate to cathode. o
0.03 pF
Plate Circuit Impedance . See Note k Plate to cathode. o . 2 - 0.03 ‘pf
Grid No.l togrid No
24 pF
Grid No.l togrid No.2 . 2 18 24 pf
Grid No
8 pF
Grid No.2 to plate. . 2 5.7 8.0 pf
Grid No
4 pF
Grid No.2 to cathode . . 2 2.0 4.0 pf
3. Grid-No.l Voltage . . . . 1,3 -6 -24 volts
-24 V
3. Grid-No.l Voltage . . . . 1,3 -6 -24 volts
4. Grid-No.2 Current . . . . 1,3 -7 +8 ma
8 mA
4. Grid-No.2 Current . . . . 1,3 -7 +8 ma
RF POWER AMPLIFIER —Class C FM Telephony Note
2.9 A
RF POWER AMPLIFIER —Class C FM Telephony Note 1: With 2.9 volts (AC or DC) on filament.
Note
700 V
Note 3: With dc plate voltage of 700 volts, dc grid-
Up to
250 MHz
Up to 500 Mc No.2 voltage of 250 volts, and dc grid-No.l
DC PLATE VOLTAGE
2200 V
DC PLATE VOLTAGE. 2200 max. volts {g%tage adjusted to give adc plate current of
DC PLATE CURRENT
300 mA
DC PLATE CURRENT. . . 300 max. ma @ The heating time required for adequate cathode
DC GRID-No
1 mA
DC GRID-No.1 CURRENT. 100 max. ma emission 1s a function of the filament voltage and
8 max. the impedance of the filament-voltage supply. It may
8 V
8 max. the impedance of the filament-voltage supply. It may
GRID-No
2 W
GRID-No.2 INPUT . watts
PLATE DISSIPATION
1009 W
PLATE DISSIPATION . 1009 max. watts signed overvoltage control circuit.
in "Single-Tone operation, is
300 mA
in "Single-Tone operation, is 300 ma. During short as Tempilaq. The latter is made by the Tempil
maximum plate dissipation may be as high as
300 W
maximum plate dissipation may be as high as 300 watts.
surge conditions to
2 A
surge conditions to 15 amperes. GRID No.2
tor;
1 A
tor; 1t may not be clamped, nor form a portion of
regulation of the filament supply voltage is,
1 V
regulation of the filament supply voltage is, 1in
is used, a maximum impedance of
10000 ohm
is used, a maximum impedance of 10,000 ohms and a
Grid No.l of the
40 mA
Grid No.l of the 8462 in uhf service is sub- minimum divider current of 40 milliamperes are
current, but also by radiation from the cathode ohms between the grid-No
2 ohm
current, but also by radiation from the cathode ohms between the grid-No.2 and ground
At a Constant Grid-No
400 V
At a Constant Grid-No.2 Voltage of 400 Volts At a Constant Grid-No.2 Voltage of 400 Volts
Characteristic
watts at
2 W
watts at 470 Mc. Mu-Factor, Grid No.2 to Grid
Effective RF Load Resistance
470 ohm
Effective RF Load Resistance. 1420 ohms In Grid-Drive Circuit at 470 Mc