Maandelijkse archieven: januari 2014

Repair Rigexpert AA200

Sometimes it will happen your AA200 analyzer will be defective by getting to big signals on the input. By measuring large 160m verticals, when measuring while a near station is going TX with QRO etc… The input FET SGA6589Z can’t handle such signals and will break..

It is easy to replace this FET when you have some experience with soldering SMD components. Only work with ESD safe tools!!

It was not the first time for me to replace this FET. Few years ago my AA200 was also getting big signals from our 1/4wave vertical for 160m. Big AM broadcast radiostations near our frequency was the reason…

Rigexpert was kind enough to send me some new FET’s, so i can forward for a couple of years 🙂

Excellent service!!