Data set 01
1940 RCA
Published operating points and test conditions from this source.
SECTION 1
Beam Power
Other
Maximum Frequency
470 MHz
RFPowerOutput
56 W
UpTo100MHz
Power - Beam (NOT sweep) ·BeamPower-BeamPower
6850
Twin beam-power transmitting tube for AF/RF amplification, oscillation, modulation, and frequency-tripler service, with reduced-input operation extending to about 470 MHz.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 2
- Base
- -
- Socket code
- B9A
- Base pins
- 9
- Nominal heater
- 12.6 V / 625 mA
Description
The RCA 6850 is a twin beam power tube for AF/RF amplification, oscillation, modulation, and frequency-tripler service; it is identical to 6524 except for heater rating.
Socket description
Small-button Noval 9-contact
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- -
- Socket code
- B9A
- Base pins
- 9
- Nominal heater voltage
- 12.6 V
- Nominal heater current
- 625 mA
- Parallel heater voltage
- -
- Parallel heater current
- -
- Series capable
- No
Terminal pinout
Electrical assignments shared by every tube using this base designation.
No verified pinout is recorded for this base designation.
Section ratings
2 physical sections, each with unique specifications.
Section 1
Beam Power
X-ray radiationInterelectrode capacitances
- Transconductance
- 0.0045 S
- Amplification factor
- 8.5
- Max plate voltage
- 600 V
- Max screen voltage
- 300 V
- Max plate dissipation
- 25 W
12.6-V heater variant of 6524 twin beam-power tube; electrical characteristics inherited from the explicitly referenced 6524 parent. Identical-section compression applied.
Section 2
Beam Power
X-ray radiationInterelectrode capacitances
- Transconductance
- 0.0045 S
- Amplification factor
- 8.5
- Max plate voltage
- 600 V
- Max screen voltage
- 300 V
- Max plate dissipation
- 25 W
Second physical beam-power unit; RCA 6524/6850 twin-beam data, ratings per tube.
Source-dependent data
Operating conditions by source
Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.
Data set 02
1956 RCA Transmitting Tubes
Published operating points and test conditions from this source.
SECTION 1
Beam Power
Characteristics
Maximum Full-Input Frequency
100 MHz
Maximum Reduced-Input Frequency
470 MHz
Data set 03
1971 RCA HB3 Binder 6 of 7
Published operating points and test conditions from this source.
SECTION 1
Beam Power
Characteristics
Voltage — published value 1
12.6
Published datasheet value
Voltage — published value 2
10
Published datasheet value
Current — published value 1
0
Published datasheet value
Current — published value 2
625
Published datasheet value
Heater Current — published value 1
1 A
Published datasheet value
Heater Current — published value 2
588 mA
Published datasheet value
Heater Current — published value 3
663 mA
Published datasheet value
Note I
12.6
Published datasheet value