• Country
• United States of America (USA)

• Manufacturer / Brand
• Hewlett-Packard, (HP); Palo Alto, CA

• Year
• 1955 ??

• Category
• Service- or Lab Equipment

• Radiomuseum.org ID
• 157615

• Number of Tubes
• 6

• Valves / Tubes
• 12AX7 12AX7 6DJ8 6AX5 6AU5 6CB6 0B2

• Wave bands
• - without

• Power type and voltage
• Alternating Current supply (AC) / 115; 230 Volt

• Loudspeaker
• - - No sound reproduction output.

• Material
• Metal case

• from Radiomuseum.org
• Model: Standing Wave Indicator 415B - Hewlett-Packard, HP; Palo Alto

• Shape
• Tablemodel, high profile (upright - NOT Cathedral nor decorative).

• Dimensions (WHD)
• 7.25 x 11.25 x 14 inch / 184 x 286 x 356 mm

• Notes
• Input for 8.4mA or 4.3mA bolometer or 1/100A fuse; also for 200 ohms or 200Kohms crystal rectifier. BNC input connector.
  Requires external thermistor or diode mount.

• Net weight (2.2 lb = 1 kg)
• 20 lb 0 oz (20 lb) / 9.080 kg

• Price in first year of sale
• 200.00 $

• Literature/Schematics (1)
• Electronics, April 1955

• Author
• Model page created by Emilio Ciardiello. See "Data change" for further contributors.

• Other Models

• Here you find 391 models, 359 with images and 138 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Hewlett-Packard, (HP); Palo Alto, CA