Data set 01
1955 Lorenz
Published operating points and test conditions from this source.
SECTION 1
Tuning Indicator
Application
Display type
Magic band
Tuning Indicator ·TuningIndicator-TuningIndicator
EMM803
Double magic-band fluorescent tuning indicator designed for stereo receivers, providing two visual indication systems for tuning, balance, or related stereo functions.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 2
- Base
- -
- Socket code
- B9A
- Base pins
- -
- Nominal heater
- 6.3 V / 450 mA
Description
Double magic-band tuning indicator for stereo receivers.
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
- -
- Nominal heater voltage
- 6.3 V
- Nominal heater current
- 450 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
Tuning Indicator
X-ray radiationInterelectrode capacitances
- Max plate voltage
- 300 V
- Max plate dissipation
- 0.9 W
Section 2
Tuning Indicator
X-ray radiationInterelectrode capacitances
- Max plate voltage
- 300 V
- Max plate dissipation
- 0.9 W
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.