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Many types of protective finishes are available for the copper conductors on PCBs, and when making a choice, it helps to know the characteristics and relative costs of each when developing a PCB for the highest performance over the longest lifetime. Learn more in this blog posting.

VNAs have traditionally been high priced capital equipment that needed to be justified with many use cases. While Copper Mountain Technologies has made moderately priced, PC driven VNAs for many years, it is only recently that several low cost, full featured models became available from other manufacturers. Here is a comparison of some models.