QT designed instrumentation -link/download

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downloads:

microwave:
mixer basics
spectrum analyser basics
spectrum analysis
S-parameters
TDR (time domain reflectometry) workshop
dBm-Volts conversion table
directional couplers
rf-receivers and mixers (1)
rf-receivers and mixers (2)
coax connectors (1)
grounding,shielding,interference:
grounding(1)
shielding basics-page1
shielding basics-page2
optics:
photodiode basics
light measurements handbook
misc:
analog to digital conversion, tutorial
jitter/phasenoise application note1
jitter/phasenoise application note2
noise voltage, current
EM spectrum cartoon

links:

microwaves101 microwave info
educypedia electronics and more
Scotts Guide to electronics (very) basic introduction to electronics (best part:radio techniques)
HP archive Hewlett Packard, made famous equipment before the computer guys took over (seminars on microwave, noise etc)