CQ Amateur Radio – August 2019

(Tina Sui) #1

BEST PRODUCTS. BEST VALUE. BEST WARRANTY. CONTACT YOUR FAVORITE DEALER TODAY!


[email protected] 410-586-2177 WWW.LDGELECTRONICS.COM


Do You Need a Desktop


OR


A Remote Auto Tuner?


A LONG COAX RUN CAN BE SURPRISINGLY LOSSY,


ESPECIALLY WHEN YOU USE YOUR TUNER TO


MANAGE A HIGH SWR. LDG MAKES REMOTE


TUNERS THAT ELIMINATE MOST OR ALL OF THAT


LOSS BY MATCHING AT OR NEAR THE


ANTENNA’S FEED POINT.



  1. PUT UP YOUR ANTENNA, UP TO 10:1 SWR

  2. CHOOSE AN LDG DESKTOP TUNER FOR LESS THAN 100 FEET OF COAX


OR CHOOSE AN LDG REMOTE TUNER FOR MORE THAN 100 FEET OF COAX.



  1. DELIVER MAXIMUM POWER TO YOUR ANTENNA


FOR MAXIMUM ON-THE-AIR FUN!


RADIO


DESKTOP


TUNER


< 100’ COAX


RADIO


REMOTE


TUNER



100’ COAX







FROM THE 2005 ARRL HANDBOOK


FIGURES 21.4 AND 21.5


SWR DESKTOP REMOTE


1.5:1 1.0db 1.0db


10:1 3.0db 1.0db


DELIVERED 50W 80W
POWER

100 FEET RG-8 COAX, 30MHz, 100 WATTS,


ANTENNA SWR 10:1

Free download pdf