Power - Beam (NOT sweep) (over 1000V 100W) ·BeamPower
Forced-air-cooled 500-watt coaxial transmitting tetrode for high-frequency and VHF power service at frequencies to approximately 250 MHz.
Indirectly heated 500 W coaxial transmitting tetrode for high-frequency/VHF power service up to 250 MHz, with forced-air cooling.
General specifications
Properties common to every published source and operating point.
Electrical assignments shared by every tube using this base designation.
No verified pinout is recorded for this base designation.
1 physical section, each with unique specifications.
Section 1
Promoted ratings taken from printed Maximum Ratings blocks; source filename/content mismatch handled by printed designation.
Source-dependent data
Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.
Data set 01
Published operating points and test conditions from this source.
Control-grid input capacitance
68 pF
Published interelectrode capacitance
Plate output capacitance
8.5 pF
Published interelectrode capacitance
Plate-to-control-grid capacitance
0.12 pF
Published interelectrode capacitance
Maximum frequency
250 MHz
Published maximum/rated frequency
Heater data
12.6 V; 3.3-4 A
Published heater voltage/current range or limit
Data set 02
Published operating points and test conditions from this source.
Heater voltage
12.6 V
Maximum plate voltage
4000 V
Maximum screen-grid voltage
600 V
Maximum plate dissipation
500 W
Maximum screen-grid dissipation
20 W
Maximum control-grid dissipation
5 W
Maximum frequency
250 MHz
Heater current
3.3 A to 4 A
Heater warm-up time
60 s
Minimum
Control-grid capacitance
68 pF
Anode capacitance
8.5 pF
Anode to control-grid capacitance
0.12 pF
Transconductance
28000 uS
Screen-to-control-grid voltage ratio
19
Amplification factor A
25
Characteristic frequency
250 MHz
Secondary frequency
8 MHz