‰  NOW 30 WPM  ‰
THE NECESSARY ELEVATION ANGLE, 44, FROM SAN FRANCISCO TO THIS PART OF
SOUTHERN CALIFORNIA FALLS IN THE FIRST NULL OF THE 100 FOOT HIGH ANTENNAS
LEVATION PATTERN.  SEE FIGURE 3, WHICH SHOWS THE ELEVATION PATTERNS FOR
FIVE 40 METER ANTENNAS AT DIFFERENT HEIGHTS.  IN THE NULL AT A 44 TAKEOFF
ANGLE, THE 100 FOOT HIGH DIPOLE IS JUST ABOUT EQUAL TO A 2 FOOT HIGH
DIPOLE.  ILL DISCUSS 2 FOOT HIGH DIPOLES IN MORE DETAIL LATER.  FOR MOST OF
CALIFORNIA, THE PROBLEM WITH 100 FOOT HIGH 40 METER ANTENNAS IS THAT
INTERFERING SIGNALS FROM TEXAS, COLORADO OR WASHINGTON STATE WILL ALSO BE
S9 IN SAN FRANCISCO.  SO WILL STATIC CRASHES COMING FROM THUNDERSTORMS ALL
OVER THE WEST AND MUCH OF THE GULF COAST.  ED FARMER, AA6ZM, JOKINGLY TOLD
ME THAT THE ARMY DOESNT HAVE ANY PROBLEM WITH INTERFERING SIGNALS THEY JUST
CALL IN AN AIRSTRIKE.  WE HAMS DONT GENERALLY HAVE THIS ABILITY, ALTHOUGH
WE OCCASIONALLY CALL IN THE FCC.  SEE FIGURE 4, WHICH SHOWS A TYPICAL
DISTRIBUTION OF THUNDERSTORMS ACROSS THE US IN THE LATE AFTERNOON,
‰  FROM PAGE 96  ‰
N8WP 1938 2 38 6,742 ORG OH KY IN ARS K8SCH 1747 2 23 6,336 OH St Paul
Radio Club and W0MR Radio Club WOMR K0AGF 1852 2 90 6,306 MN Sturdy
‰  END OF 30 WPM TEXT  ‰  QST DE W1AW  ƒ