Data set 01
1962 Eimac
Published operating points and test conditions from this source.
Beam Power
Other
The EIMAC
1 a
The EIMAC 4CX3500A 1s a compact ceramic/metal radia! beam power
mit operation at full ratings to
220 MHz
mit operation at full ratings to 220 MHz.
The
18 a
The 4CX3500A has a galn of over 18 dB in FM broadcast service,
Current, at
90 volts
Current, at 5.0 volts « ¢ o o o ¢ o o o o & 90 A
CIN ¢ o o o o o o o o s
0 pF
CIN ¢ o o o o o o o o s 6 s ¢ o o ¢ o s o o o s 0 s s o o & = « o e e T pF
COUt o o o o e o o o o o ¢ ¢ o o o o
12 pF
COUt o o o o e o o o o o ¢ ¢ o o o o 8 o o 0 0 s 086 0 9 0 0 0o . . . . 12 pF
COP o ¢ ¢ o o o o ¢ o o o o o ¢ s s o o s s » ¢ o e o o o o e o o
0.5 pF
COP o ¢ ¢ o o o o ¢ o o o o o ¢ s s o o s s » ¢ o e o o o o e o o 0.5 pF
CiN o o o o o ¢ e o s o o o o o a o ¢ s o o o
58.5 a
CiN o o o o o ¢ e o s o o o o o a o ¢ s o o o 8 6 06 8 s s o e o o s 58.5 pF
CoOUT o o o ¢ o o o o s o o o
10 a
CoOUT o o o ¢ o o o o s o o o 6 o a 5 s s o s 8 8 0 o 0 5 0 0 c e e 10 pF
CPK e o o o o o o o ¢ o ¢ o o s s s o o s s s o o
0.4 pF
CPK e o o o o o o o ¢ o ¢ o o s s s o o s s s o o 6 o 2 o o o « s o e 0.4 pF
Maximum Frequency for Full Ratings (CW) =« « o o o ¢ o ¢ ¢ ¢« o o @ e e o
220 MHz
Maximum Frequency for Full Ratings (CW) =« « o o o ¢ o ¢ ¢ ¢« o o @ e e o 220 MHz
CoOlING o o o o o ¢ o o « o o o ¢ o ¢ o o
8 a
CoOlING o o o o o ¢ o o « o o o ¢ o ¢ o o 8 s o6 o o ¢ 8 a s o oo Forced Air
RADIO FREQUENCY POWER AMPL IFIER TYPICAL OPERATION (frequencies t+o
30 MHz
RADIO FREQUENCY POWER AMPL IFIER TYPICAL OPERATION (frequencies t+o 30 MHz)
DC PLATE VOLTAGE
21 VOLTS
DC PLATE VOLTAGE 6000 VOLTS GridCurrent * o o ¢ s o s s o & 59 21 mAdc
DC GRID VOLTAGE ~
7 VOLTS
DC GRID VOLTAGE ~-500 VOLTS Calculated Driving Power « « . « 25 7 W
DC PLATE CURRENT
640 AMPERES
DC PLATE CURRENT 2.0 AMPERES Plate Dissipation ®* .« « 4 « « & 1320 640 L)
PLATE D{SSIPATION
3360 WATTS
PLATE D{SSIPATION 3500 WATTS Plate Output Power * « ¢« « &« « & 5280 3360 W
SCREEN DISSIPATION
2700 WATTS
SCREEN DISSIPATION 165 WATTS Load Impedance e s e o s s o 1700 2700 Ohms
GRID DISSIPATION
50 WATTS
GRID DISSIPATION 50 WATTS
RAD{O FREQUENCY POWER AMPL IFIER MEASURED DATA AT
100.5 MHZ
RAD{O FREQUENCY POWER AMPL IFIER MEASURED DATA AT 100.5 MHZ
DC PLATE VOLTAGE
123 VOLTS
DC PLATE VOLTAGE 6000 VOLTS Screen Current ®* . ¢ ¢ o & o & 140 123 mAdc
DC SCREEN VOLTAGE
400 VOLTS
DC SCREEN VOLTAGE 1500 VOLTS Grid Voltage « « ¢« ¢« ¢ ¢« « o & -300 -400 Vdc
DC GRID VOLTAGE
63 VOLTS
DC GRID VOLTAGE -500 VOLTS Grid Current ® .« ¢« ¢ ¢ o « o & 84 63 mAdc
DC PLATE CURRENT
5531 AMPERES
DC PLATE CURRENT 2.0 AMPERES Useful Power Out * # . . . . « 3838 5531 w
PLATE DISSIPATION
68 WATTS
PLATE DISSIPATION 3500 WATTS Efficlency ¥ « o o o ¢ o o o & 64 68 b4
SCREEN DISSIPATION
66 WATTS
SCREEN DISSIPATION 165 WATTS Driving Power * o « ¢ o ¢ « ¢ & 56 66 W
GRID DISSIPATION
19.2 WATTS
GRID DISSIPATION 50 WATTS Power Gain ®* « « « o o ¢ o « o 18.4 19.2 a8
level and with cooling air at
50 A
level and with cooling air at 50 Deg.C maximum, service. A reduction iIn fllament voltage will
for frequencies below
110 MHz
for frequencies below 110 MHz, and with the tube lower the filament temperature, which will sub-
a chimney in place, a minimum of
241 a
a chimney in place, a minimum of 241 CFM of alr value of filament voltage should be determined for
sipation is
50 watts
sipation is 50 watts, determined approximately by
pation is
165 watts
pation is 165 watts. With no ac appllied to the switches must not be bypassed or "cheated" +to
present, since screen dissipation ratings will be ent on frequency. Under
300 MHz
present, since screen dissipation ratings will be ent on frequency. Under 300 MHz most of the energy
indictions on the screen current meter. This Is a to
10 a
indictions on the screen current meter. This Is a to 10 mil | iwatts per square centimeter.
supply and to discharge high-voltage capacltors San Carlos, CA
94070 A
supply and to discharge high-voltage capacltors San Carlos, CA 94070 U.S.A.
‘EE%
4 A
‘EE%4Q@&»A