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Cardwell Triple Section 12-106 / 12-106 / 12-88 pF Air Variable Capacitor

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Condition:
Used
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  • Vintage Cardwell triple-section air variable capacitor, 12–106 pF / 12–106 pF / 12–88 pF. Original U.S.-made Cardwell construction marked with patent 1626981. Features 1/32-inch plate spacing, 1/4-inch shaft, and sturdy metal frame. Measures approximately 5½" long × 3" wide × 2½" high. Approximately 1500 V peak rating based on air gap. Excellent for classic radio restoration, multi-band HF receivers, low-power transmitters, or experimental RF projects. Smooth rotation and multiple stator terminals. Quality used Cardwell component perfect for boat-anchor builders and collectors.
  • Vintage Cardwell triple-section air variable capacitor, 12–106 pF / 12–106 pF / 12–88 pF. Original U.S.-made Cardwell construction marked with patent 1626981. Features 1/32-inch plate spacing, 1/4-inch shaft, and sturdy metal frame. Measures approximately 5½" long × 3" wide × 2½" high. Approximately 1500 V peak rating based on air gap. Excellent for classic radio restoration, multi-band HF receivers, low-power transmitters, or experimental RF projects. Smooth rotation and multiple stator terminals. Quality used Cardwell component perfect for boat-anchor builders and collectors.
  • Vintage Cardwell triple-section air variable capacitor, 12–106 pF / 12–106 pF / 12–88 pF. Original U.S.-made Cardwell construction marked with patent 1626981. Features 1/32-inch plate spacing, 1/4-inch shaft, and sturdy metal frame. Measures approximately 5½" long × 3" wide × 2½" high. Approximately 1500 V peak rating based on air gap. Excellent for classic radio restoration, multi-band HF receivers, low-power transmitters, or experimental RF projects. Smooth rotation and multiple stator terminals. Quality used Cardwell component perfect for boat-anchor builders and collectors.
  • Vintage Cardwell triple-section air variable capacitor, 12–106 pF / 12–106 pF / 12–88 pF. Original U.S.-made Cardwell construction marked with patent 1626981. Features 1/32-inch plate spacing, 1/4-inch shaft, and sturdy metal frame. Measures approximately 5½" long × 3" wide × 2½" high. Approximately 1500 V peak rating based on air gap. Excellent for classic radio restoration, multi-band HF receivers, low-power transmitters, or experimental RF projects. Smooth rotation and multiple stator terminals. Quality used Cardwell component perfect for boat-anchor builders and collectors.
$24.99
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Description

Cardwell Triple Section 12-106 / 12-106 / 12-88 pF Air Variable Capacitor

Key Specifications & Information
  • Manufacturer: Cardwell (Allen D. Cardwell Manufacturing Corporation / Cardwell Condenser), Made in U.S.A.
  • Markings: “CARDWELL U.S. PATENT 1626981” (standard Cardwell patent 1,626,391 for their variable air condenser design) and handwritten “380 TOTAL” on one end plate.
  • Type: Triple-section (3-gang) air dielectric variable capacitor.
  • Capacitance:
    – Section 1: 12 pF min to 106 pF max
    – Section 2: 12 pF min to 106 pF max
    – Section 3: 12 pF min to 88 pF max
  • Plate spacing: 1/32 inch (0.03125 inch)
  • Shaft: 1/4-inch diameter
  • Dimensions: Length 5½ inches, Width 3 inches, Height 2½ inches
  • Construction: Metal frame with ceramic/insulating supports, multiple stator terminals, dual end plates, typical rugged Cardwell build for receiver or low-to-medium power RF use.
Voltage Rating: Approximately 1500 V peak (based on the 1/32-inch air gap). Similar Cardwell capacitors with ~0.030-inch spacing are commonly rated in the 1000–2000 V peak range. Suitable for receiving circuits or low-to-medium power transmitting applications.This is a classic multi-section Cardwell tuning capacitor ideal for multi-band receivers, transmitters, or antenna matching networks.
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