If you’ve been tearing electronic devices apart for long enough, you’ll know that the old gear had just as many mysteries within as the newer stuff. The parts back then were bigger, of course, but ...

The acronym “IF” as applied to superheterodyne receivers stands for “intermediate frequency” and so the above title is, to be a purist, an absurdity in referencing a “frequency frequency” but I've ...

The analysis of RF and microwave signals in the frequency domain used to be the forte of the spectrum analyzer, but now it’s become a choice between signal analyzers and digital oscilloscopes. How did ...

Many engineers who use spectrum analyzers on a regular basis might be content to know that their instruments will produce a display of “power versus frequency” with little idea of what’s going on ...

The venerable superheterodyne is very much with us. The intermediate frequency amplifier, the IF amplifier or the IF stage, requires alignment of the IF transformers for optimum performance so let's ...