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You can barely see the inverted L running between the two towers in the photo above. In a prior blog, I characterized its receive performance, which was worse than a lower and shorter inverted L, and worse than both my 250′ and my 500′ Beverages. Nevertheless, because this inverted L is already in the …
Continue reading “Matching the Inverted L on 630m using a WW2 Variometer and a miniVNA Pro”
I. INTRODUCTION There are 10 Amateur Bands between 50 MHz and 10 GHz inclusive, with widely differing propagation characteristics. There are currently (as of 2-20-18) 5 slow JT modes and 3 fast JT modes, the latter allowing 15 second or shorter receive cycles. Although the program developers categorize FT8 as a slow mode and I …
Continue reading “VHF/UHF/Microwave: Which JT mode should I choose?”
NJD Technologies’ Blog pages by KB5NJD, John Langridge, are one of the best sources of information I’ve found for 630m (and 2200m). W5EST put some of the information in these blog entries into book form. The book has 22 chapters. I could not find a set of easy links to these, so I have made …
Continue reading “2-18-18 Blog: NJD Technologies 630m Blog Book by W5EST”