Voltage - Triode (single high frequency) ·Triode
6HK5
6HK5 gain-controlled VHF amplifier triode with 6.3 V 190 mA heater, 15 mA/V transconductance and 7GM base.
- Sections
- 1
- Base
- 7GM
- Socket code
- B7G
- Base pins
- 7
- Nominal heater
- 6.3 V / 190 mA
Description
Frame-grid gain-controlled triode designed for VHF RF amplifier service.
Socket description
Miniature 7-contact
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- 7GM
- Socket code
- B7G
- Base pins
- 7
- Nominal heater voltage
- 6.3 V
- Nominal heater current
- 190 mA
- Parallel heater voltage
- -
- Parallel heater current
- -
- Series capable
- No
7GM - Terminal pinout
Electrical assignments shared by every tube using this base designation.
| Terminal | Section | Connection | Evidence |
|---|---|---|---|
| PIN1G1 | A | G1 — Control Grid EIA transcription; independent manufacturer confirmation pending | Unverified EIA Base Connections, printed page 129, 7GM |
| PIN2K | A | K — Cathode EIA transcription; independent manufacturer confirmation pending | Unverified EIA Base Connections, printed page 129, 7GM |
| PIN3H | — | H — Heater EIA transcription; independent manufacturer confirmation pending | Unverified EIA Base Connections, printed page 129, 7GM |
| PIN4H | — | H — Heater EIA transcription; independent manufacturer confirmation pending | Unverified EIA Base Connections, printed page 129, 7GM |
| PIN5P | A | P — Plate (Anode) EIA transcription; independent manufacturer confirmation pending | Unverified EIA Base Connections, printed page 129, 7GM |
| PIN6IS | A | IS — Internal Screen EIA transcription; independent manufacturer confirmation pending | Unverified EIA Base Connections, printed page 129, 7GM |
| PIN7K | A | K — Cathode EIA transcription; independent manufacturer confirmation pending | Unverified EIA Base Connections, printed page 129, 7GM |
Section ratings
1 physical section, each with unique specifications.
Section 1
Triode
- Plate resistance
- 5000 Ω
- Transconductance
- 0.015 S
- Amplification factor
- 75
- Max plate voltage
- 200 V
- Max plate dissipation
- 2.3 W
- Max cathode current
- 22 mA
Sylvania/RCA 6HK5 gain-controlled VHF triode. Heater 6.3 V 0.19 A, max plate 200 V, dissipation 2.3 W, cathode current 22 mA, grid negative limit 50 V, heater-cathode ±100 V. Typical Va 135 V Vg -1 V Ia 12.5 mA, mu 75, gm 0.015 A/V, rp 5000 Ω. Shielded Cgp 0.29 pF, input 4.4 pF, output 2.6 pF, Chk 2.5 pF. 200 MHz input resistance 600 Ω, capacitance 9 pF, noise figure 4.2 dB. 7GM 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.