‰  NOW 30 WPM  Text is from December 2007 QST pages 48 and 89 ‰
VALUES ARE THE RECTANGULAR COORDINATES OF THE IMPEDANCE.  HOLD THAT
THOUGHT.  IN A TRANSMISSION LINE, WHEN A WAVE OF RF VOLTAGE AND CURRENT
ENCOUNTERS AN IMPEDANCE DIFFERENT FROM THE CHARACTERISTIC IMPEDANCE OF THE
TRANSMISSION LINE, Z0, SOME OF THE ENERGY IN THE WAVE IS REFLECTED BACK
ALONG THE LINE.  THE PHASE OF THE VOLTAGE AND CURRENTS MAKING UP THE
REFLECTED WAVE WILL DIFFER FROM THOSE IN THE INCOMING OR INCIDENT WAVE
DEPENDING ON THE VALUE OF THE IMPEDANCE CAUSING THE REFLECTION.  THE
INCIDENT AND REFLECTED VOLTAGE AND CURRENT WAVES COMBINE AT EVERY POINT
ALONG THE LINE.  AT EACH POINT, THE COMBINATION RESULTS IN VOLTAGE AND
CURRENT WITH A PHASE RELATIONSHIP DIFFERENT FROM EITHER THE INCIDENT OR
REFLECTED WAVES.  IT IS AS IF THE SAME ENERGY IN THE LINE HAD BEEN APPLIED
TO AN IMPEDANCE WITH VALUES OF RESISTANCE AND REACTANCE THAT CREATE THE
SAME PHASE RELATIONSHIP.  IF YOU CUT THE LINE AT THAT POINT AND REPLACE THE
SECTION BEYOND THE CUT WITH ACTUAL COMPONENTS CREATING THAT EQUIVALENT
‰  FROM PAGE 89  ‰
VE2HLS 135 2 1 690 QC N3HL 309 2 2 684 EPA W0RIC 317 2 1 684 CO K1GPL 158 2
1 682 STX WA6BOB 158 2 1 682 LAX EASTERN CONNECTICUT ARA K1OQ 174 2 1 678
‰  END OF 30 WPM TEXT  ‰  QST DE W1AW  ƒ