Labels:bulletin board | daily | earth | encyclical | field | gazette | grass | sand | silver screen | sky | skyscraper | windowpane OCR: operate both phone/CW Most trap verticals commercially available re- quire separate settings in order to operate the phone or CW segments of the 40 and 80-meter bands The following design provides low VSWR at both sections of each band. Overall length just under 50 feet FREO -UH DEG H-IN 89 376 025 75 795 100 525 more manageable height (38 feet) achieved by using loading coil for the 3.5 MHz por tion: FREQ UH DEG H-IN 376 025 55 795 100 525 small further reduction in height can be ob tained by changing the section above the last trap to top hat: the diameter should be about one-half the length of the section still further reduction in height is needed, another loading coil could be placed near the top of the 40 meter section The trap quality in these designs must be very poob The coil shou ...
