I have both the first and second editions of the book. The first came out in 1980; the second in 1989. The first edition had 716 pages; the second 1125. 73,Pete - N8TR At 01:42 PM 4/8/2018, donovanf at starpower.net wrote: >Hi Robie, The free Second Edition pdf is quite dated (1980), but >work every penny of the price! 73 Frank W3LPL -----