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EF Johnson 154-505-4, 12-105 pF Dual Section Air Variable Capacitor 2200V

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MPN:
154-505-4
Condition:
Used
Shipping:
$10.00 (Fixed Shipping Cost)
  • Genuine E.F. Johnson 154-505-4 dual-section air variable capacitor. Each section approximately 12-105 pF (catalog 10-99 pF), 0.075″ plate spacing, 2200 V peak rating. Compact Type E design with steatite insulation, aluminum plates, and ¼″ shaft. Ideal for ham radio, antenna tuners, amplifiers, transmitters, and RF projects. Dimensions approx. 7½″ L × 2⅝″ W × 2⅝″ H. Classic Waseca, MN quality. Clean used condition. Perfect for restoration or new builds needing reliable dual air-variable capacitance.
  • Genuine E.F. Johnson 154-505-4 dual-section air variable capacitor. Each section approximately 12-105 pF (catalog 10-99 pF), 0.075″ plate spacing, 2200 V peak rating. Compact Type E design with steatite insulation, aluminum plates, and ¼″ shaft. Ideal for ham radio, antenna tuners, amplifiers, transmitters, and RF projects. Dimensions approx. 7½″ L × 2⅝″ W × 2⅝″ H. Classic Waseca, MN quality. Clean used condition. Perfect for restoration or new builds needing reliable dual air-variable capacitance.
  • Genuine E.F. Johnson 154-505-4 dual-section air variable capacitor. Each section approximately 12-105 pF (catalog 10-99 pF), 0.075″ plate spacing, 2200 V peak rating. Compact Type E design with steatite insulation, aluminum plates, and ¼″ shaft. Ideal for ham radio, antenna tuners, amplifiers, transmitters, and RF projects. Dimensions approx. 7½″ L × 2⅝″ W × 2⅝″ H. Classic Waseca, MN quality. Clean used condition. Perfect for restoration or new builds needing reliable dual air-variable capacitance.
  • Genuine E.F. Johnson 154-505-4 dual-section air variable capacitor. Each section approximately 12-105 pF (catalog 10-99 pF), 0.075″ plate spacing, 2200 V peak rating. Compact Type E design with steatite insulation, aluminum plates, and ¼″ shaft. Ideal for ham radio, antenna tuners, amplifiers, transmitters, and RF projects. Dimensions approx. 7½″ L × 2⅝″ W × 2⅝″ H. Classic Waseca, MN quality. Clean used condition. Perfect for restoration or new builds needing reliable dual air-variable capacitance.
  • Genuine E.F. Johnson 154-505-4 dual-section air variable capacitor. Each section approximately 12-105 pF (catalog 10-99 pF), 0.075″ plate spacing, 2200 V peak rating. Compact Type E design with steatite insulation, aluminum plates, and ¼″ shaft. Ideal for ham radio, antenna tuners, amplifiers, transmitters, and RF projects. Dimensions approx. 7½″ L × 2⅝″ W × 2⅝″ H. Classic Waseca, MN quality. Clean used condition. Perfect for restoration or new builds needing reliable dual air-variable capacitance.
$27.99
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Description

EF Johnson 154-505-4, 12-105 pF Dual Section Air Variable Capacitor 2200V

Specifications
  • Manufacturer: E.F. Johnson Co., Waseca, Minn., U.S.A.
  • Model / Catalog No.: 154-505-4 (Type E dual-section, equivalent to 100ED30 series)
  • Sections: Dual
  • Capacitance per section: Min. ~10–12 pF, Max. ~99–105 pF (catalog nominal 10–99 pF; your measured 12–105 pF is typical for used units)
  • Plate spacing: 0.075″
  • Plates per section: 15
  • Peak voltage rating: 2200 V
  • Shaft: ¼″ diameter
  • Dimensions (your measurements): Length 7½″, Width 2⅝″, Height 2⅝″ (catalog body length ~5⅜″ excluding shafts; matches Type E dual panel space of ~2¾″ × 2⅝″)
  • Construction: Aluminum plates (.032″ thick, rounded edges), heavy aluminum end frames with ¼″ tie rods, dense molded steatite insulators, cadmium-plated phosphor-bronze rotor contacts (center contact for dual symmetry). Compact, rigid design for medium/low-power RF service with high capacity-to-volume ratio and low losses.
This is a standard Type E dual-section unit ideal for ham radio, antenna tuners, and RF equipment.
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