Vintage Knight Crystal Calibrator X-10 with octal plug and manual copy

The Vintage Knight Crystal Calibrator X-10 is a unique piece of ham radio equipment that serves as a crucial component for aligning ham radio receivers. This calibrator, made by the brand Allied-Knight in the United States, is compatible with a universal range of brands and features a 100 kc xtal with an 8-pin connectivity. With the capability to operate on a voltage range of 100 to 300VDC or 6.3VAC, this calibrator is designed to fit ham radio receivers with transformer type power supplies and includes a 6AK6 tube. Ideal for checking receiver alignment every 100 Kcs of the HF Band to 35 Mc. Sixteen-page manual copy included. Untested but looks clean. For sale and shipping to USA only.