HN-31 Cantenna Dummy RF Load
----------------------------

The Heathkit HN-31 was designed as a small convenient package capable of
handling a kilowat of power. The oil-cooled, temperature stable resistive
element provides a very low VSWR up to 400 mHz. A special circuit is
incorporated to provide a DC voltage for monitoring relative output power via.
a phono socket. Connection to load is via an SO-239 coax connector.

Transformer oil or mineral oil should be used, not motor oil. Motor oil has
too low a vaporizing temperature. It should be filled at least 1/4" above
the shield tube.

                                SPECIFICATIONS
                                --------------

Impedance . . . . . . . . . . . . . . . 50 ohms.

VSWR. . . . . . . . . . . . . . . . . . Less than 1.5 up to 300 mHz
                                        Less than 2.0 up to 400 mHz.

Power Dissipation Capability. . . . . . 1 kilowat maximum (ICAS).

Size. . . . . . . . . . . . . . . . . . 8-7/8" high x 7" diameter overall.

Net Weight. . . . . . . . . . . . . . . 1-1/2 lbs (oil not included).

(Data taken from Heathkit HN-31 manual by KB7RGG)