Data set 01
1950 Sylvania
Published operating points and test conditions from this source.
SECTION 1
Triode
Other
Operating Frequency Maximum
1700 MHz
Plate Voltage
95 V
Oscillation Plate Current
24 mA
Power Output
300 mW
1700 MHz
Voltage - Triode (single high frequency) ·Triode
5794
5794 pencil-type fixed-tuned UHF oscillator triode with integral resonators for radiosonde transmission near 1680 MHz.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- -
- Socket code
- B9A
- Base pins
- -
- Nominal heater
- 6.3 V / 135 mA
Description
Pencil-tube continuous-wave fixed-tuned oscillator designed for approximately 1670-1700 MHz operation with about 300 mW output.
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
- 135 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
1 physical section, each with unique specifications.
Section 1
Triode
X-ray radiationInterelectrode capacitances
- Max plate voltage
- 120 V
- Max plate dissipation
- 3.6 W
Sylvania/RCA 5794 1680 MHz fixed-tuned radiosonde oscillator with integral resonators. RCA 1956 3.6 W maximum plate dissipation, 120 V oscillator maximum plate per 6562-related rating; Sylvania at plate 95 V, Ia 24 mA, 300 mW output, heater 5.2 V ~146 mA. At plate 117 V heater 6.6 V, plate current max 34 mA. Frequency adjustment ±12 MHz, 50 Ω coaxial output, max seal temp 175°C. Heater nominal scalar retained 6.3 V 0.135 A pending reconciliation. Not the adjacent RCA 5876 pencil triode: do not copy its mu, gm or rp. No ordinary socket base.
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
Triode
Characteristic
HeaterOrFilamentVoltage
6.3 V
HeaterOrFilamentCurrent
135 mA
Other
MaximumOperatingFrequency
1680 MHz