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Specialized - Traveling Wave ·TravelingWave

CV2188

Broadband traveling-wave amplifier for approximately 3.6–4.2 GHz service, providing about 1 GHz instantaneous bandwidth without retuning for wideband microwave amplification.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
6.3 V / 1 A

Description

The W7/2D is a travelling-wave amplifier for use from 3600 to 4200 Mc/s, with about 1000 Mc/s bandwidth for wide-band amplification without retuning.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
-
Base pins
-
Nominal heater voltage
6.3 V
Nominal heater current
1 A
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

TravelingWave

X-ray radiationInterelectrode capacitances
Max plate voltage
3200 V
Max cathode current
18 mA

Published ratings and characteristics promoted where applicable; remaining useful values retained as parameters.

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 01

1946 Standard Telephone and Cables

Published operating points and test conditions from this source.

SECTION 1

TravelingWave

Characteristics

  • Minimum pre-heating time

    120 s

  • Amplification, small signal

    20 dB

  • Amplification at one watt output

    18 dB

  • Maximum output power

    2.5 W

  • Bandwidth between 3 dB gain points

    1000 to - Mc/s

  • Cold transmission loss

    40 dB

Other

  • Operating frequency range

    3600 to 4200 Mc/s

  • Maximum direct second anode and helix voltage

    3.2 kV

  • Maximum direct second anode and helix current

    4 mA

  • Maximum direct first anode voltage

    2 kV

  • Maximum direct first anode current

    500 uA

  • Maximum direct collector voltage

    3.5 kV

  • Maximum direct cathode current

    18 mA

  • Direct second anode and helix voltage

    3 kV

    SHFAmplifier 3900Mc/s

  • Direct collector voltage

    3.05 kV

    SHFAmplifier 3900Mc/s

  • Direct collector current

    14 mA

    SHFAmplifier 3900Mc/s

  • Direct first anode voltage

    1.3 kV

    SHFAmplifier 3900Mc/s

  • Direct cathode current

    15 mA

    SHFAmplifier 3900Mc/s

  • Maximum power output

    2.5 W

    SHFAmplifier 3900Mc/s

  • Cooling air flow

    4 cu ft/min

    ForcedAirCooling