To: Victor Iguina, Joe Greene	3

From: Jon Hagen

Date: April7, 2004, June 8,2004, June12, May 31, 2005

Subject: S-band Transmitter Priorities

0. 6-12-04 Exciter: update schematic (new 2W amps, removed preamps, add manufacturer's part numbers, add measured (in addition to nominal) dBm readings along chain. Install SMA Tees (or whatever) so that control voltages can be measured easily at the input to attenuators, phase shifters, etc.

Write a procedure sheet to aid in troubleshooting the exciter(How to use house power, does the floor have to be in position? What other interlocks must be met? )

1. documenation on disk

2. magnet variac installation

3. house power for testing (review system and write procedure, including site power system diagram.

4. New hoses

5. Radiator repair/replacement

6. arc detectors follow up