Characteristic

Unit

Max

Typ

Min

Symbol

ON CHARACTERISTICS

DC Current Gain

10

30

—

—

DYNAMIC CHARACTERISTICS

Output Capacitance

—

350

450

pF

FUNCTIONAL TESTS

Common–Emitter Amplifier Power Gain

12

14

—

dB

Collector Efficiency

η

—

—

45

65

—

—

% (PEP)

% (CW)

Intermodulation Distortion (2)

IMD

—

–33

–30

dB

Electrical Ruggedness

VSWR 3:1 at all Phase Angles)

ψ

No Degradation in Output Power

NOTE:

2. To Mil–Std–1311 Version A, Test Method 2204, Two Tone, Reference each Tone.

Figure 1. 30 MHz Test Circuit Schematic

C1, C2, C5, C7 — 170–780 pF, Arco 469

C3, C8, C9 — 0.1

µF, 100 V Erie

C4 — 500

µF @ 6.0 V

C6 — 360 pF, 3 x 120 pF 3.0 kV in parallel

C10 — 10

µF, 100 V

R1 — 10

Ω, 10 Watt

R2 — 10

Ω, 1.0 Watt

CR1 — 1N4997 or equivalent

L1 — 3 Turns, #16 Wire, 0.4

″ I.D., 0.3″ Long

L2 — 0.8

µH, Ohmite Z–235 or equivalent

L3 — 12 Turns, #16 Enameled Wire Closewound 0.25

″ I.D.

L4 — 4 Turns, 1/8

″ Copper Tubing, 0.6″ I.D., 1.0″ Long

L5, L6 — 2.0

µH, Fair–Rite 2643021801 Ferrite bead each or equivalent

BIAS

+

RF

INPUT

RF

OUTPUT

50 Vdc

+

-

R1

C3

C4

+

-

CR1

C1

C2

L1

R2

L2

D.U.T.

L3

C5

L4

C8

C9

C10

+

-

L5

L6

C6

C7

2