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LY1DQ ham radio resources

TRIODE

GS-31B

The GS-31B triode fulfils generation and amplification functions in grounded-grid circuits in continuous-wave operation in the decimetric and metric wavelength ranges. OPERATING ENVIRONMENTAL CONDITIONS

147 134

G KH H ∅ 26,2 -0,8 ∅ 40,5 -0,5 ∅ 60,3 -0,8 ∅65

100,2 65 A 1,2 650

G

147-4

A

6,7±0,5

Cathode: indirectly heated, dispenser, oxide-coated. Envelope: metal-ceramic. Cooling: forced air. Height, mm, at most: with heat sink without heat sink Diameter, mm, at most: with heat sink without heat sink Mass, kg, at most: with heat sink without heat sink

14,2±0,5

GENERAL

15 +0,5 -1,5

40,3-0,5

∅ 100,2 -0,5 9,3±0,7

5-2000 98 343 1470 490 -60 to +70 98

45-1

105 max

Vibration loads: frequency, Hz acceleration, m/s2 Multiple loads with acceleration, m/s2 Single impacts with acceleration, m/s2 Linear loads with acceleration, m/s2 Ambient temperature, °C Relative humidity at up to +40 °C, %

CONNECTION OF ELECTRODES WITH LEADS

BASIC DATA Electrical Parameters Heater voltage, V Heater current, A Mutual conductance (at anode voltage 2 kV, grid voltage 1 V and anode current 250 mA), mA/V, at least Operating point (negative grid voltage at anode voltage 2 kV and anode current 250 mA), V Interelectrode capacitance, pF: input output, at most transfer Warm up time, s, at most Output power, W, min.: at anode voltage 1,8 kV, anode current 500 mA, wavelength 60 cm at anode voltage 1,7 kV, anode current 700 mA, wavelength 30 cm

12,6 3,1-3,7

22

H

Ig, Ia, A

6-12 19-24 0,12 3,8-5,2 120

60 180

Limit Operating Values Heater voltage, V Anode voltage, kV: DC instantaneous value Grid voltage (instantaneous value), V Cathode current (r.m.s. value), A Dissipation, W: anode grid Temperature at anode lead, °C Temperature at cathode and grid leads, °C Temperature at external ceramic parts, °C Wavelength, cm

KH

A - anode; G - grid; KH - cathode and heater; H - heater

2,0

U g=

50V

1,8 1,6

40

1,4

30

1,2

20

1,0

10 0

0,8 12-13,2

0,6

3 6 -400 to +120 1,4

0,4 0,2 0

-5 -10 50 40 30 20 10

0,4 0,8 1,2 1,6 2,0 2,4 2,8

3

1,0x10 22 200 120 250 28-100

Ua, kV

Averaged Characteristic Curves: U1=12,6 V; __________ anode; _ _ _ _ _ _ grid-anode Created by LY3NML

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LY1DQ ham radio resources Ia, Ig, A

1,6 1,4

1,2

500

0,8

1,2

P, W

2,2 2,0 1,8

1,0 0,8 0,6

1,2 2 1,6

0,4

0,8

2,2

10

20 30 40 50

Ug, V

P, W

1000 900 800 700 600 500

2 ,2 Ua=

kV 2,0

Averaged Characteristic 400 Curves Showing Output Powe and Efficiency versus Anode Current: 300 U1=12,6 V, λ=30 cm; __________ output power; _ _ _ _ _ _ efficiency (η η)

0,2 -30 -20 -10 0

1,6

η =30%

Averaged Characteristic Curves: U1=12,6 V; __________ anode; _ _ _ _ _ _ anode-grid

Ua =1 ,6k 2 2,2 V

1,8

25 20

1,8

15

1,6

10 5

500

700

900

Ia, mA

0

Averaged Characteristic Curves Showing Output Powe and Efficiency versus Anode Current: U1=12,6 V, λ=60 cm; __________ output power; Ua=2,2kV η = 50% _ _ _ _ _ _ efficiency (η η) 2,0 1,8 1,6 40 2,2 2,0 1,8 1,6 30

400 300

20

200 100

10

200 300 400 500 600 700 800 Ia, mA

Created by LY3NML

GS-31B.pdf

100. 200. 300. 400. 500. 600. 700. 800. 900. 1000. Ua=2,2kV. 2,2. 2,0. 1,8 1,6. 2,0. 1,8. 1,6 300. 400. 500. 500 700 900 Ia, mA 50. Ia, Ig, A. -30 -20 -10 0. 0,2. 0,4.

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