‰  NOW 13 WPM  ‰  TEXT IS FROM JUNE 2015 QST  PAGE 68  ‰

ARE USUALLY FITTED WITH A TYPE N CONNECTOR, TO WHICH ONE MUST CONNECT THE
ITEM BEING TESTED.  THIS IS USUALLY FINE FOR TESTING ANTENNAS, AS IT IS
POSSIBLE TO CONNECT AN ADAPTER TO THE TYPE N PLUG FOR OTHER CONNECTOR
TYPES.  HOWEVER, I WANTED TO CHECK THE VF ON SOME SAMPLES OF LADDER LINE
AND 300 TWINLEAD, BUT WAS UNSURE HOW TO BEST CONNECT THESE TO THE TYPE N
FEMALE ON MY ANALYZER.  I FINALLY DEVISED THIS ADAPTER.  I TOOK A TYPE N
MALE PLUG OF THE CRIMP VARIETY AND, WITH A HACKSAW, SAWED OFF THE BACK END.
ƒ  QST DE W1AW  ‰
THEN I SOLDERED SOME MINI ALLIGATOR CLIPS ON AS SHOWN IN FIGURES 6 AND 7.
IN ORDER TO VERIFY THE PERFORMANCE OF THE CLIP CONNECTIONS, I CONNECTED A
1/2 W, 50 CARBON COMPOSITION RESISTOR TO THE CLIPS AND RAN A SWR PLOT.  THE
SWR AT 150 MHZ WAS ABOUT 1R5, WHICH WAS NOT BAD, BUT I WONDERED IF I COULD
DO BETTER.  I IMPROVED THE ADAPTER BY CUTTING OFF ONLY HALF OF THE BACK END
SEE FIGURE 8.  THIS REDUCED THE 150 MHZ SWR TO ABOUT 1R2 AND THE 200 MHZ
‰  END OF 13 WPM TEXT  ‰  QST DE W1AW  ƒ