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EF Johnson 154-38-2, 23 pF - 333pF, 3000 Volt Single Section Air Variable Capacitor

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MPN:
154-38-2
Condition:
Used
Shipping:
$10.00 (Fixed Shipping Cost)
  • EF Johnson 154-38-2 Single Section Air Variable Capacitor – 23-333 pF, 3000 Volt. Genuine E.F. Johnson compact Type E single air variable ideal for ham radio transmitters, amplifiers, and antenna tuners. Rugged aluminum construction with steatite insulation, approx. 8½″ L × 2⅝″ W × 2⅝″ H, ¼″ shaft. Clean used condition. Perfect for vintage restoration or medium-power RF projects. Nationwide Radio & Eq. Sales – ke9pq.com
  • EF Johnson 154-38-2 Single Section Air Variable Capacitor – 23-333 pF, 3000 Volt. Genuine E.F. Johnson compact Type E single air variable ideal for ham radio transmitters, amplifiers, and antenna tuners. Rugged aluminum construction with steatite insulation, approx. 8½″ L × 2⅝″ W × 2⅝″ H, ¼″ shaft. Clean used condition. Perfect for vintage restoration or medium-power RF projects. Nationwide Radio & Eq. Sales – ke9pq.com
  • EF Johnson 154-38-2 Single Section Air Variable Capacitor – 23-333 pF, 3000 Volt. Genuine E.F. Johnson compact Type E single air variable ideal for ham radio transmitters, amplifiers, and antenna tuners. Rugged aluminum construction with steatite insulation, approx. 8½″ L × 2⅝″ W × 2⅝″ H, ¼″ shaft. Clean used condition. Perfect for vintage restoration or medium-power RF projects. Nationwide Radio & Eq. Sales – ke9pq.com
  • EF Johnson 154-38-2 Single Section Air Variable Capacitor – 23-333 pF, 3000 Volt. Genuine E.F. Johnson compact Type E single air variable ideal for ham radio transmitters, amplifiers, and antenna tuners. Rugged aluminum construction with steatite insulation, approx. 8½″ L × 2⅝″ W × 2⅝″ H, ¼″ shaft. Clean used condition. Perfect for vintage restoration or medium-power RF projects. Nationwide Radio & Eq. Sales – ke9pq.com
  • EF Johnson 154-38-2 Single Section Air Variable Capacitor – 23-333 pF, 3000 Volt. Genuine E.F. Johnson compact Type E single air variable ideal for ham radio transmitters, amplifiers, and antenna tuners. Rugged aluminum construction with steatite insulation, approx. 8½″ L × 2⅝″ W × 2⅝″ H, ¼″ shaft. Clean used condition. Perfect for vintage restoration or medium-power RF projects. Nationwide Radio & Eq. Sales – ke9pq.com
$29.99
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Description

EF Johnson 154-38-2, 23 pF - 333pF, 3000 Volt Single Section Air Variable Capacitor

Genuine E.F. Johnson Co. (Waseca, MN) single-section air-variable capacitor, catalog/part number 154-38-2.
 
measured / stated specs:
  • Sections: 1
  • Capacitance: 23–333 pF
  • Dimensions: Length 8½″, Width 2⅝″, Height 2⅝″
  • Shaft: ¼″ diameter
Catalog correlation & additional specifications:
This is a Type E-series compact single-section unit. Typical published values for the 154-38-2 are approximately 25–320 pF (your measured 23–333 pF is an excellent match), with roughly 47 plates. Plate spacing / air gap: Approximately 0.075″ (some references list related Type E units in the 0.045–0.075″ range). Voltage rating: 3,000 V peak. Construction: Aluminum plates with rounded edges, heavy aluminum end frames and tie rods, dense molded steatite (ceramic) insulators, and a ¼″ shaft. Designed for medium-power RF service in transmitters, amplifiers, antenna tuners, and other ham-radio applications where a compact, high-Q variable is needed. The relatively long plate stack provides good capacitance in a modest cross-section.Condition notes for ad (customize): Clean used. Free-turning shaft, good plate meshing, and intact steatite end pieces visible in the photos. Nameplate clearly reads 154-38-2.
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