Re: Perf board
A couple of decades back [well, to be honest maybe more than three] I did quite a lot of VHF/UHF prototyping on double-sided PCB material - laying it out as "stripline". Sometimes this involved crazily-serpentine traces when aiming for resonance below 200MHz.
The big issue was always "will the next batch of PCB-material have the same self-capacitence as the last" ?? And to be honest it was not consistent so we switched back to specifying "above-the-plane" silver-plated coils [some of which were just a 5mm half-loop] because these were repeatable irrespective of which minimum-wage oriental fab-shop got to stuff them into the PCBs]
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