‰  NOW 13 WPM  ‰  TEXT IS FROM NOVEMBER 2013 QST PAGE 32  ‰

NETWORK ATTENUATORS SOMETIMES CALLED T PADS FOR THIS APPLICATION, ALTHOUGH
OTHER FORMS OF ATTENUATORS CAN ALSO BE USED.  WHILE THERE ARE DERIVATIONS
AND FORMULAS FOR THESE IN A VARIETY OF TEXTS, ALL BASED ON MULTIPLE
APPLICATIONS OF OHMS LAW, THESE DAYS IT IS JUST AS EASY TO GO TO A WEBSITE
AND USE AN ONLINE CALCULATOR.  JUST SEARCH CALCULATING T PAD VALUES AND YOU
SHOULD FIND WHAT YOU NEED.  THIS ARTICLE IS BASED ON BUILDING A 10 DB POWER
ATTENUATOR THAT CAN INTERMITTENTLY HANDLE 100 W.  USING THIS APPROACH OTHER
ƒ  QST DE W1AW  ‰
VALUES CAN BE BUILT AS WELL.  A SINGLE 10 DB, 50 ATTENUATOR BEHIND THAT 100
W TRANSCEIVER WILL HAVE AN OUTPUT OF 10 W INTO A 50 LOAD.  A PAIR OF
CASCADED 10 DB ATTENUATORS WILL RESULT IN A 20 DB REDUCTION, OR 1 W INTO
THE SAME 50  LOAD.  NOTE THAT IF THE ATTENUATORS ARE USED ON THE OUTPUT OF
A TRANSCEIVER, THE SAME LOSS WILL APPLY TO THE RECEIVE SIDE GENERALLY NOT A
GOOD IDEA FOR REGULAR OPERATION.  THE PROBLEM IS THAT THE CALCULATORS GIVE
‰  END OF 13 WPM TEXT  ‰  QST DE W1AW  ƒ