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Military Surplus 7321, 30 to 150 pF 2500 Volt Single Section Air Variable Capacitor with Reduction Drive

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MPN:
7321
Condition:
Used
Shipping:
$9.00 (Fixed Shipping Cost)
  • Military surplus model 7321 single-section air variable capacitor, 30–150 pF, approximately 2500 V peak rating. Features built-in worm gear reduction drive with right-angle shaft for precise RF tuning. Classic USA-made multi-plate design with ~1/16-inch plate spacing and 3/16-inch shaft. Measures about 4 × 3-3/8 × 2-5/8 inches. Ideal for amateur radio transmitters, receivers, antenna tuners, or restoration projects needing fine adjustment and reliable high-voltage performance.
  • Military surplus model 7321 single-section air variable capacitor, 30–150 pF, approximately 2500 V peak rating. Features built-in worm gear reduction drive with right-angle shaft for precise RF tuning. Classic USA-made multi-plate design with ~1/16-inch plate spacing and 3/16-inch shaft. Measures about 4 × 3-3/8 × 2-5/8 inches. Ideal for amateur radio transmitters, receivers, antenna tuners, or restoration projects needing fine adjustment and reliable high-voltage performance.
  • Military surplus model 7321 single-section air variable capacitor, 30–150 pF, approximately 2500 V peak rating. Features built-in worm gear reduction drive with right-angle shaft for precise RF tuning. Classic USA-made multi-plate design with ~1/16-inch plate spacing and 3/16-inch shaft. Measures about 4 × 3-3/8 × 2-5/8 inches. Ideal for amateur radio transmitters, receivers, antenna tuners, or restoration projects needing fine adjustment and reliable high-voltage performance.
  • Military surplus model 7321 single-section air variable capacitor, 30–150 pF, approximately 2500 V peak rating. Features built-in worm gear reduction drive with right-angle shaft for precise RF tuning. Classic USA-made multi-plate design with ~1/16-inch plate spacing and 3/16-inch shaft. Measures about 4 × 3-3/8 × 2-5/8 inches. Ideal for amateur radio transmitters, receivers, antenna tuners, or restoration projects needing fine adjustment and reliable high-voltage performance.
$24.99
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Description

Military Surplus 7321, 30 to 150 pF 2500 Volt Single Section Air Variable Capacitor with Reduction Drive

Key Specifications:
  • Brand: Military Surplus (associated with Aircraft Radio Corp / ARC-style units)
  • Model: 7321
  • Sections: 1 (single-section)
  • Capacitance: 30 pF minimum to 150 pF maximum
  • Plate spacing: Approximately 1/16 in (0.0625 in)
  • Estimated voltage rating: ~2500 V peak (based on standard ARRL Handbook guidelines for ~0.05–0.07 in air-gap spacing; practical RF rating)
  • Shaft: 3/16 in diameter
  • Drive: Built-in worm gear reduction drive with right-angle output (shaft oriented perpendicular to the front face for precision tuning and anti-backlash performance)
  • Dimensions (approx.): Length 4 in, Width 3-3/8 in, Height 2-5/8 in
  • Construction: Rugged multi-plate air-dielectric design with metal frame, gear train, and mounting provisions typical of military/aviation surplus
Exact original factory voltage data for this specific model was not located; the rating is derived from measured plate spacing. The reduction gearing provides fine control ideal for RF tuning applications.
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