HP 8595E SYTF P/N: 5086-7803 PIN switch problem

[OH2LIY]

Hi, HP8595E is quite easy to convert HP8593E. Remove broken SYTF and grab YF85 or similar YTF (I got mine from eevilbay under 100€). New YTF needs 24V from power (there is wire all ready for this). Then there is need to add RF relay to switch lo/hi input to mixer. Original attenuator 10-30dB steps are usable over 20GHz. Biggest PITA is to make calibration after identity change




Ramppa