Removed SRD Labs paragraph
It seems to me that the paragraph which singled-out SRD Labs LORAN-A receivers was a pat-on-the-back for the manufacturer, not consistent with the dispassionate view of an encyclopedia.  Beyond this, I take exception to the factual basis for the statements in the removed paragraph.  I speak as an engineer who helped develop the Digital Marine Electronics Corp. automatic LORAN-A receiver, the Northstar 2000, which was in commerce by the very early 1970s.