Is plain old FR-4 (also known as “Glass Epoxy”) PCB material suitable for use in RF designs [1]? This question comes up time and again. Many say no, fewer say yes – who's right? As I have published ...

A middle ground between the board manufacturer and a home etching system though might be what [igorfonseca83] has been doing: using an inexpensive laser engraver to make PCBs for him.

The Spokane River is not the most PCB-laden in Washington, and it may not have been for a long time. The data that might support that statement dates to 1999 – 16 years ago – and does not ...

While the $1.7 billion PCB cleanup of the Hudson River is showing promise, federal officials also said Thursday that it could take years of additional study to know if it really worked. For now ...

Also, some local officials say additional dredging is needed for more than environmental reasons. In addition to the PCB cleanup, the channel should be dredged deeper, to 12 feet, to promote ...