Author Archives: Rob

Keithley Model 168 Autoranging DMM

Last modified: August 16, 2025

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Tektronix 2225 Oscilloscope

Last modified: August 16, 2025

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Kenwood MA-4000 Duplexer

Last modified: August 16, 2025

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RCA 6ME8

Last modified: February 17, 2025

GE 6S4A

Last modified: February 17, 2025

Lindal 6ML8

Last modified: February 17, 2025

Lindal 6ME8

Last modified: February 17, 2025

Zenith 6MV8

Last modified: February 17, 2025

Sylvania 6X4

Last modified: February 17, 2025

Kellogg Number 50

Last modified: January 12, 2025

Heathkit Schlumberger ID-1290

Last modified: January 12, 2025

GE Vacuum Tube Box Art

Last modified: January 5, 2025

Zenith Vacuum Tube Box Art

Last modified: January 5, 2025

Westinghouse Vacuum Tube Box Art

Last modified: January 5, 2025

RCA Vacuum Tube Box Art

Last modified: January 5, 2025

Tung-Sol 6C4

Last modified: January 5, 2025

Sylvania 6C4

Last modified: January 5, 2025

Majestic 6C4

Last modified: January 5, 2025

Westinghouse 6Z10

Last modified: January 5, 2025

Zenith 6Z10

Last modified: January 5, 2025

Zenith 6U10

Last modified: January 5, 2025

Voice of Music (Westinghouse) 6V6GT

Last modified: January 5, 2025

TEN-TEC Triton IV

Last modified: November 27, 2024

Yaesu FT-101

Last modified: November 27, 2024

Kenwood TS-120V

Last modified: November 27, 2024