Featuring Fine Vintage and Modern Amateur Radio Gear For Sale

Cardwell / EF Johnson Model 154-3-1 single-section air variable capacitor, 28–486 pF, 2 kV Volt

Write a Review
MPN:
154-3-1
Condition:
Used
Shipping:
$8.00 (Fixed Shipping Cost)
  • Cardwell 154-3-1 single-section air variable capacitor, 28–486 pF, 2 kV peak. Heavy-duty aluminum plates, 1/32-inch spacing, 1/4-inch shaft, ceramic ends. Ideal for ham radio transmitters, RF amplifiers, antenna tuners, and high-power tank circuits. Compact 2-5/8 × 2-5/8 × ~6-inch size with mounting brackets. Genuine Cardwell (E.F. Johnson Type E heritage). Clean used condition. Perfect for amateur radio builders seeking reliable high-voltage variable capacitance
  • Cardwell 154-3-1 single-section air variable capacitor, 28–486 pF, 2 kV peak. Heavy-duty aluminum plates, 1/32-inch spacing, 1/4-inch shaft, ceramic ends. Ideal for ham radio transmitters, RF amplifiers, antenna tuners, and high-power tank circuits. Compact 2-5/8 × 2-5/8 × ~6-inch size with mounting brackets. Genuine Cardwell (E.F. Johnson Type E heritage). Clean used condition. Perfect for amateur radio builders seeking reliable high-voltage variable capacitance
  • Cardwell 154-3-1 single-section air variable capacitor, 28–486 pF, 2 kV peak. Heavy-duty aluminum plates, 1/32-inch spacing, 1/4-inch shaft, ceramic ends. Ideal for ham radio transmitters, RF amplifiers, antenna tuners, and high-power tank circuits. Compact 2-5/8 × 2-5/8 × ~6-inch size with mounting brackets. Genuine Cardwell (E.F. Johnson Type E heritage). Clean used condition. Perfect for amateur radio builders seeking reliable high-voltage variable capacitance
  • Cardwell 154-3-1 single-section air variable capacitor, 28–486 pF, 2 kV peak. Heavy-duty aluminum plates, 1/32-inch spacing, 1/4-inch shaft, ceramic ends. Ideal for ham radio transmitters, RF amplifiers, antenna tuners, and high-power tank circuits. Compact 2-5/8 × 2-5/8 × ~6-inch size with mounting brackets. Genuine Cardwell (E.F. Johnson Type E heritage). Clean used condition. Perfect for amateur radio builders seeking reliable high-voltage variable capacitance
  • Cardwell 154-3-1 single-section air variable capacitor, 28–486 pF, 2 kV peak. Heavy-duty aluminum plates, 1/32-inch spacing, 1/4-inch shaft, ceramic ends. Ideal for ham radio transmitters, RF amplifiers, antenna tuners, and high-power tank circuits. Compact 2-5/8 × 2-5/8 × ~6-inch size with mounting brackets. Genuine Cardwell (E.F. Johnson Type E heritage). Clean used condition. Perfect for amateur radio builders seeking reliable high-voltage variable capacitance
$28.99
Frequently bought together:

Description

Cardwell / EF Johnson Model 154-3-1 single-section air variable capacitor, 28–486 pF, 2 kV Volt

28-486 pF 2 kV 154-3-1 Single Section Air Variable CapacitorBrand & Identification:
Cardwell (formerly E.F. Johnson Type E / 154 series; Cardwell acquired the Johnson capacitor line). Marked CARDWELL 154-3-1. Single-section air-dielectric variable capacitor with ceramic/Steatite end frames, aluminum plates, 1/4-inch shaft, and chassis/panel mounting brackets.
 
lists.contesting.com
Key Specifications:
  • Capacitance: 28–486 pF (user measurement; catalog equivalents commonly listed as 19–488 pF or 20–480 pF).
  • Sections: 1 (single).
  • Plate count: approximately 45.
  • Plate spacing / air gap: 1/32 inch (0.031 inch; consistent with ~2 kV class).
  • Peak voltage rating: 2000 V (widely documented for the 154-3 / 154-3-1; some listings show ~1800 V).
  • Shaft: 1/4 inch diameter.
  • Dimensions (approx.): Length 5-5/16 to 6-1/8 inches, width 2-5/8 inches, height 2-5/8 inches.
  • Construction: Heavy .032-inch aluminum plates with rounded edges, stainless-steel shaft, phosphor-bronze contacts, low chassis capacitance. Suitable for RF tuning, transmitter plate/tank circuits, antenna matching, and high-power amateur radio amplifiers within the voltage rating.
     
     
View AllClose

Related Products