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EF Johnson 100ED30, 10-99 pF (each) Dual Section Air Variable Capacitor 2200V

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MPN:
100 ED 30
Condition:
Used
Shipping:
$10.00 (Fixed Shipping Cost)
  • Genuine E.F. Johnson 100ED30 dual-section air variable capacitor. Each section 10-99 pF (approx. 14-105 pF measured), 0.075″ plate spacing, 2200 V peak rating. Compact Type E design with steatite insulation, aluminum plates, ¼″ shaft. Ideal for ham radio, antenna tuners, amplifiers, transmitters, and RF projects. Dimensions approx. 6⅝″ L × 2¾″ 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 100ED30 dual-section air variable capacitor. Each section 10-99 pF (approx. 14-105 pF measured), 0.075″ plate spacing, 2200 V peak rating. Compact Type E design with steatite insulation, aluminum plates, ¼″ shaft. Ideal for ham radio, antenna tuners, amplifiers, transmitters, and RF projects. Dimensions approx. 6⅝″ L × 2¾″ 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 100ED30 dual-section air variable capacitor. Each section 10-99 pF (approx. 14-105 pF measured), 0.075″ plate spacing, 2200 V peak rating. Compact Type E design with steatite insulation, aluminum plates, ¼″ shaft. Ideal for ham radio, antenna tuners, amplifiers, transmitters, and RF projects. Dimensions approx. 6⅝″ L × 2¾″ 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 100ED30 dual-section air variable capacitor. Each section 10-99 pF (approx. 14-105 pF measured), 0.075″ plate spacing, 2200 V peak rating. Compact Type E design with steatite insulation, aluminum plates, ¼″ shaft. Ideal for ham radio, antenna tuners, amplifiers, transmitters, and RF projects. Dimensions approx. 6⅝″ L × 2¾″ 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 100ED30 dual-section air variable capacitor. Each section 10-99 pF (approx. 14-105 pF measured), 0.075″ plate spacing, 2200 V peak rating. Compact Type E design with steatite insulation, aluminum plates, ¼″ shaft. Ideal for ham radio, antenna tuners, amplifiers, transmitters, and RF projects. Dimensions approx. 6⅝″ L × 2¾″ 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 100ED30, 10-99 pF (each) Dual Section Air Variable Capacitor 2200V

Specifications (from original E.F. Johnson Type E dual-section catalog data / equivalent 154-505 series)
  • Manufacturer: E.F. Johnson Co., Waseca, Minn., U.S.A.
  • Model / Type: 100ED30 (Cat. No. approx. 154-505)
  • Sections: Dual (independent or paralleled)
  • Capacitance per section: Min. ~10 pF, Max. ~99 pF (your measured 14–105 pF is consistent with used/measured values)
  • Plate spacing: 0.075″
  • Plates per section: 15
  • Peak voltage rating: 2200 V
  • Shaft: ¼″ diameter stainless steel (with rear extension typical of the series)
  • Dimensions (your measurements align with Type E dual): Length ~6⅝″ overall, Width 2¾″, Height 2⅝″ (body/panel space ~2¾″ × 2⅝″; catalog body length ~5⅜″ excluding shafts/mounts)
  • Construction: Aluminum plates (.032″ thick, rounded edges), heavy aluminum end frames, ¼″ aluminum tie rods, dense molded steatite insulators, cadmium-plated phosphor-bronze rotor contacts. Designed for medium/low-power RF transmitters; high capacity-to-volume ratio, low losses, rigid.
 matches the classic Type E dual-section design for ham radio, antenna tuners, amplifiers, and RF equipment.
 
 
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