General

The primary is center-tapped for push-pull modulators. The tranformer has two secondaries. Secondary #2 will carry 80 mils to modulate screens of beam power tubes or screen grid tubes. It is equipped with adjustable protective spark gaps on both primary and secondary. Primary will match any class B tubes up to 10,000 ohms plate-to-plate such as 810's, 75T's, 805's, 8005's, ZB120's, 203's, HY51Z's, 211's, 813's, 828's, 203Z's, etc.

Maximum Audio Power: 550 watts

Maximum Current

Secondary #1: 450 mA

Secondary #2: 80 mA

Turns Ratio

Pri to Sec #1: 1:1

Pri to Sec #2: 5:1

Pri to Sec #2 tap 25:1

Impedance Ratio

Pri to Sec #1: 1:1

Pri to Sec #2: 25:1

Pri to Sec #2 tap: 625:1

DC Resistance

Primary 135 Ohms

Sec. #1: 112 Ohms

Sec #2: 99 Ohms

Transformer Insulation

Primary: 8000V

Sec. #1: 11000 V

Sec.#2: 2000V to the rest of the coils and the core

Dimensions

9" wide, 7 " deep, 7 " high

Mounting Centers: 5" x 8 ", with heavy channel iron mounting brackets

Weight: approx. 40 Lbs.

Info thanks to Ed, VA3ES

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