4cW10,000a/8661
cHaRacteRistics
The 4CW10,000A/8661 is electrically identical to
the 4CX10,000D/8171 and 4CX5000A/8170 except
for its plate dissipation, which is rated at 12 kW.
The tube is useful up to 110 MHz and is suggested
for general use as an oscillator, amplifier, or
modulator. A pair of these tubes will deliver more
than 30 kW of audio output. tube.
Plate Dissipation (Max.)
Screen Dissipation (Max.)
Grid Dissipation (Max.)
Frequency for Max. rating (CW)
Amplification Factor
Filament/Cathode
Voltage
12,000 Watts
250 Watts
75 Watts
110 MHz
4.5
Thoriated Tungsten
7.5 Volts
Current
75 Amps
Capacitance
Input
Grounded Cathode
115 pf
Output
20.5 pf
Feedthrough
Capacitance
Input
1.0 pf
Grounded Grid
53 pf
Output
20.5 pf
Feedthrough
Cooling
.16 pf
Water and Forced Air
Special Coaxial
SK-300A
Base
Air Socket
Air Chimney
Boiler
---
---
Length
11.44 in; 29.06 cm
4.66 in; 11.84 cm
7.5 lb; 3.4 kg
Diameter
Weight
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typicalꢀOpeRatiOn
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pꢁꢂꢉꢆꢀꢀ
pꢁꢂꢉꢆꢀ
pꢁꢂꢉꢆꢀ
sꢈrꢆꢆꢊꢀ
pꢁꢂꢉꢆꢀ
Drꢇvꢆꢀ
Oꢋꢉꢅꢋꢉꢀ
ꢀ
ꢀ
Voꢁꢉꢂꢌꢆꢀ cꢋrrꢆꢊꢉꢀ
Voꢁꢉꢂꢌꢆꢀꢀ Voꢁꢉꢂꢌꢆꢀ cꢋrrꢆꢊꢉꢀ ꢀpowꢆrꢀ powꢆrꢀ
(Voꢁꢉꢃ)ꢀ
7,500ꢀ
6,500ꢀ
5,000ꢀ
7,500ꢀ
7,500ꢀ
(amꢅꢃ)ꢀ
3.0ꢀ
(Voꢁꢉꢃ)ꢀ
7,500ꢀ
---ꢀ
(Voꢁꢉꢃ)ꢀ
(amꢅꢃ)ꢀ (Wꢂꢉꢉꢃ)ꢀ (kꢇꢁoWꢂꢉꢉꢃ)
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ꢀ
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cꢀ
cꢀ
RFꢀꢂmꢅꢁꢇfiꢆrꢀꢉoꢀ30ꢀMHzꢀ
RFꢀꢂmꢅꢁꢇfiꢆrꢀꢉoꢀ110ꢀMHzꢀ
500ꢀ
2.8ꢀ
---ꢀ
150ꢀ
---ꢀ
120ꢀ
---ꢀ
---ꢀ
16.0
---
2.6ꢀ
---ꢀ
cꢀ
RFꢀꢂmꢅꢁꢇfiꢆrꢀꢅꢁꢂꢉꢆꢀmodꢋꢁꢂꢉꢆdꢀ
RFꢀꢁꢇꢊꢆꢂrꢀꢂmꢅꢁꢇfiꢆrꢀ
2.5ꢀ
5,000ꢀ
7,500ꢀ
7,500ꢀ
500ꢀ
2.4ꢀ
8.5
aB1ꢀ
aB1ꢀ
4.0ꢀ
1,500ꢀ
1,500ꢀ
3.33ꢀ
6.66ꢀ
15.95
31.9
aFꢀꢂmꢅꢁꢇfiꢆrꢀorꢀmodꢋꢁꢂꢉorꢀ(2ꢀꢉꢋbꢆꢃ)ꢀ
4.0ꢀ
The values listed above represent specified limits for the product and are subject to change. The data should be used for basic
information only. Formal, controlled specifications may be obtained from CPI for use in equipment design.
Forꢀꢇꢊformꢂꢉꢇoꢊꢀon this and other CPI products, visit our website at:ꢀwww.ꢈꢅꢇꢇ.ꢈom,
or contact: CPI MPP Division, Eimac Operations, 607 Hansen Way, Palo Alto, CA 94303
telephone: 1(800) 414-8823. fax: (650) 592-9988 | email: powergrid@cpii.com