EF Johnson
EF Johnson 70 D 90, 27 pF - 76 pF Single Section Air Variable Capacitor 9000 Volt
- MPN:
- 70 D 90
- Condition:
- Used
- Shipping:
- $12.00 (Fixed Shipping Cost)
Frequently bought together:
Description
EF Johnson 70 D 90, 27 pF - 76 pF Single Section Air Variable Capacitor 9000 Volt
Specifications & Information
Genuine E.F. Johnson Co. (Waseca, MN) single-section air-variable capacitor, Type/Cat. No. 70D90.Your measured / stated specs:
Heavy aluminum end frames, aluminum plates, low-loss steatite insulators, and standard ¼″ shaft. The 0.250″ plate spacing and 9,000 V rating place this firmly in the higher-voltage Type D family, designed for medium- to high-power RF service. These units were commonly used in amateur radio transmitters, linear amplifiers, antenna tuners, and other high-voltage RF applications where wide plate spacing is required for reliability under high RF voltages.
- Sections: 1
- Capacitance: 27–76 pF
- Dimensions: Length 8″, Width 4¼″, Height 4″
- Plate spacing / air gap: 0.250″
- Voltage rating: 9,000 V
- Shaft: ¼″ diameter
Heavy aluminum end frames, aluminum plates, low-loss steatite insulators, and standard ¼″ shaft. The 0.250″ plate spacing and 9,000 V rating place this firmly in the higher-voltage Type D family, designed for medium- to high-power RF service. These units were commonly used in amateur radio transmitters, linear amplifiers, antenna tuners, and other high-voltage RF applications where wide plate spacing is required for reliability under high RF voltages.
Condition notes : Clean used. Free-turning shaft, good plate alignment, and intact steatite supports. Nameplate partially worn but still clearly shows 70 / 9000 / .250 and 70D90.
Related Products
EF Johnson 36 pF - 500 pF Single Section Air Variable Capacitor
EF Johnson
$36.99
EF Johnson 36 pF - 500 pF Single Section Air Variable Capacitor
Specifications & Information
EF Johnson 500 pF Single Section Air Variable Capacitor 36 - 500 pF
EF Johnson
$37.99
EF Johnson 500 pF Single Section Air Variable Capacitor 36 - 500 pF
Genuine E.F. Johnson Co. (Waseca, MN) single-section air-variable
EF Johnson 48D299 16-360 pF 2000V Single Section Air Variable Capacitor
EF Johnson
$22.99
EF Johnson 48D299 16-360 pF 2000V Single Section Air Variable Capacitor
Specifications & Information
EF Johnson 154-38-2, 23 pF - 333pF, 3000 Volt Single Section Air Variable Capacitor
EF Johnson
$29.99
EF Johnson 154-38-2, 23 pF - 333pF, 3000 Volt Single Section Air Variable Capacitor
Genuine E.F. Johnson Co. (Waseca, MN) single-sectio
EF Johnson 100 E 45, 17-100 pF, 3000 Volt Single Section Air Variable Capacitor
EF Johnson
$19.99
EF Johnson 100 E 45, 17-100 pF, 3000 Volt Single Section Air Variable Capacitor
Specifications & Information