To: File

From: Jon Hagen

Date: 10-6-99

Subject: Half-height WR2100 Calibration Kit

All the plumbing in the 430 radar system to Gregorian dome and inside the dome will be done with half-height WR2100 waveguide. We will make extensive use of our network analyzer in setting up this system and therefore need a half-height waveguide calibration kit for the analyzer. The drawing below shows a 3-element kit which is just a half-height version of our standard WR2100 calibration kit, which was made several years ago in Ithaca. The three shorts have 2- way electrical lengths of 0, 120, and 240 degrees.

These waveguide shorts will be made from pieces of flanged half-height waveguide in stock at Arecibo.