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Theory Into Practice T R A I L - F R I E N D L Y R A D I O End-Fed Dipole Lite: Taking Kurt’s Design to the Field 14

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Page 1: TRAIL-FRIENDLY RADIO End-Fed Dipole Lite: Taking Kurt’s Design …heartandhoof.com/radio/End-Fed-Dipole.pdf · 2011. 11. 14. · FREEee COMP ANION D! OMP C RE INC UDE INCNL FRr

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �� � � � � � � � � ! " # $ % & $ ' ! ( ) # ' ) * � � � � � � � � � � � � � � � � � � � � �� � � � � � � � � + � � � � � � � � � � � � � � � � � � � � � � � , - � � � . � � � / � � � � � � � � � � � 0 + � � � � � 1 � � � 2 � 0 � � 1 � � � � � . � � � � � �� � / � � � � � � � 0 � � � � � � � � � . � � � � � � � � � � � � � � 3 � � � � � � � � �� � � � � � � � � � � 0 � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 1 � � � �� � � � � � � 4� � � 1 � � � � � � � � � � � � � � � � � � � � � � � � � / � � � � � � � � � � � � � � � � � � � �� � � � � � � � � � � � � � � � 1 1 � � � � � � � � � � � � � 5 6 � � 7 1 � � 7 � � � � � / � � � �� � � � 7 � � � � � - � � � � � � � � � � � � � 1 � � � � � � � � � � � � � � � � � 5� � � � . � � � � � � � � 0 1 � � � � � � . � � � � � � � � � � � 1 � � � � � � � � � � � � � 8 � � � � 9 : � � � � � 2 - ; � < = 2 1 � � � � � � � � � > ? ? > � � � � � � � 7 � � �� � � � � � � � � � � � � � � � � � � � � � � � 1 � � / � � � � � � 2 � � � � . � � � � � � � � � �� � � � � 1 . � � � � � � � � + � � � � � 1 � � � � � � � � � � � � � � � . � : � � � � � � � , @ � � � � � � � A � � � + B � � � C � 1 � � � 4 � � 1 � � � � � D � � � � � � +. � / � � � � � � � � � . � � � � � � � D � � � � � � + . � / � � � � � � � � � � � � 0 � � � � � � �� � � � � � � � � � � + . � / � � � 1 � � � � � � � � � � � � � � � � � � � � E � � � � � � � � � 7� � � � � � � � � � � � � � � � � � � / � � � � � � �

: � � � � � � � � � � � � � � � � � � � � � � 7 � � � � � � � � � � � � � � � � � � � � � � � � � � �� � � � � � � � � � � � F � � � 1 G H H . � � � � � � � � � � � � � I � � � � � � H . � � J � � � � � � H; K > K H - @ � J K L J ; K > K 1 � � M 3 � � � � � � / � � � � � � � � � � 2 1 � � � � � � � � �N � � � � � � � 7 � . � � � � � � � � . � � � � � � � � � � � � � � � � � � � � � � � � � Theory Into Practice� � � � � � � � � � � � � � � � � � � � � � � . � � 1 � � � � � � � @ A � � � 7 � 1 � � � +� � � � � � � � � + D � � � � � � . � / � � � � � � � � � . � � � � � � � 0 � � � � � � � � � � � � � �� � 1 � � � � � � � � � � � 1 � � � � 3 � � � . � � � � � � � � � � � � � � � � � � � � � � � � 1 � � � � �� � � � � � 0 2 � � � / � � � � � � � + � � � � � � � � � � � � � � � � O K + � � � @ P + O L � �� � � � � � � � � � � � � � � � � � � � � / � � � � � � � � � 3 � � � � � � � � � � 1 � � � � � � - ; � < = � � � � 0 + � � � � + � � � � � � � � � � � +. � � � � � � � � � � � 7 � 2 � � � � � � 2 � � � � � 1 � � � � � � � � � � � � � � � � � � � �� � � � � � � � ; K + � � � � � / � � � � � � . � � � > K + � � � � � � � � � � 0 . � � � � � � � � � � �� . � A ; Q K + R > � � � � 7 � � � � � � � � � E � � � � � � � � � � � � � � � � � � � � � � � � � � S � � � � � � � � � � � � 2 � � � A ; Q K + R > � � � � � � � � � � � � � � � � � � � � � � � � �� � � � � � � � � � � � � � / � � � � � @ P + O L � � � 0 : � � � � � � � � � � � � � � � �

TRAIL-FRIENDLY RADIO

End-Fed Dipole Lite: Taking Kurt’sDesign to the FieldT U V W X Y Z [ \ ] W ^ Y _ [ ` a b c d e

f g g h i j k l j m n k l o p n l q r i s i t r u p r o n v g w x o v p k l g q y p o z v i k i x { j o r | } ~ r p o � n � z � k l w � p l � v m i g p � v r p x v r z p n z v g q v k n � n � � wm n � � n k l h i k � r h p v s u q i j l i h k i k r u p r o n v g � � � � � � � � � � � � � � � � � � � � � � �14 � � � � � � � � � � � � � � �   ¡ � ¢ £ � ¤   � ¥ ¦ § ¦ ¨ © ª ¤ � � ¢ � £ � � � � « ¬ ­ ¬ � ® ® ª � � ¢ � £ � � � ¯ ¡ ° � ¢ ±

Page 2: TRAIL-FRIENDLY RADIO End-Fed Dipole Lite: Taking Kurt’s Design …heartandhoof.com/radio/End-Fed-Dipole.pdf · 2011. 11. 14. · FREEee COMP ANION D! OMP C RE INC UDE INCNL FRr

. � � � � � � . � � � � 7 � � � � � � � � � � � � � � 3 � � � � � � � . � � � � � � 1 � � � � � � � � � � � � � � � � �� � � � � � � � + � � � � � � � � � � � � � � � � � � � � � N � � � � �� � � � � � � � � . � � � � � � � � � � � 7 1 � � 7 , � � � � +1 � � � � 5 4 � � � � � � � � � � � � � � � � � � � � � � � � 2� � � � � � � � � � � � � � + � � � � � 1 � � � , � � � � � @ P +> ² Q S ³ O K � � � ´ � � � � � � � � � � � � � � � � � �� � � 7 � µ � � � � � � D � � � � � � � ³ � ´ � � / � � � > K + . � � �� � � � � � � � � � � @ P + > ² Q S � � � � � � � � + � � + � � +� � � � � � � � � � � � � � � � � 4¶ · ¸ ¹ ¹ º » º ¼ · » ¼ ½ ¾ ¿ À Á º  À » Ã Ä ¿ ¼ ¸ Å Æ » À º Ç» Ä ¸ º Á È É Ä º à · ¹ Á Ê ¹ Ã Ç º  · Ä Ã Ë Á ¸ ¿ Ã Ç » À à Á ¸ Ä Â ÃÌ Í Î Ï È Ð Ñ » ¼ Ä ¼ º ¹ Ç Ò º » À ½ ¾ ¿ À Ç ½ ¸ Á Á Ã Ä ¸ · ¹Á º  À » Ã Ä Ì Ñ Ñ Î Ó È Ð Ñ Ç Ô Õ À à ¸ · » à · · ¸ ½ à ¸ ÈÇ ¾ Ä Ã ½ à · » Ç ¸ · ¹ ¿ À ¼ Ö Ã Ä Ã × ¾ º Ä Ã ½ à · » Ç É ¼ Ä» À º Ç » º ¹ º Ã Ä Ø Ã Ä Ç º ¼ · ¸ Ä Ã » À Ã Ç ¸ ½ à ¸ Ç É ¼ Ä » À Ã

À ¼ ½ Ã È Ù ¸ Ç Ã ¹ À º  À Ã Ä Ë ¼ Ò Ã Ä Ø Ã Ä Ç º ¼ · Ô- � � � � � � Ú Û Ü � � Û Û � Ý � � � � � � � Þ � � � � � � 2 . �. � � � � � � � � � � � � � : + A @ � � � � � � � Gathering the Pieces: � � 1 � � � � � � � � � � � � � � � 3 R � � � � � � +� � � � � � � � Q K + � � � � � / � � � � � � � � � � � � � �� � � � � � � � 1 � � � � � � 1 � � � � � G Q K + � � � � � � @ P +> ² Q S 2 � � � � A > > Q + R > � � � � � � � � 2 � � � � ß O +� � � � � � � ; ; � � � � � � � � � � � 7 + � 1 . � � � 2 �� � � 1 � � � � 1 � � � � � � � � � � + D � � � � � � + � � � �à � � 0 � � � � � � 2 � � � � � . � � � � � � � 2 � � � � � � � � � � �� � � � � � + � � � � + � � � + . � � � � � � á � � � � � � � � �� � � � � � � . � � � � � � 2 � � . � � � � � / � � � � 1 � � � � � � � � � � � � � � � A > > Q + R > �� � � � � � � 3 � � � � � � � � � � � à � � � � � �9 � � � � � � � � � � 9 � � � � � � � � 2 â � � � � � � � � � F � � � 1 G H H . . . 1 � � � � � � + � � � � � � � � � � � � H M: � � � � � � 1 � � � � � � � � 0 1 � � � � / � � � � � � � 1 1 � �� / � � � � � � � : � � @ P + > ² Q S . � � � � � � � � � � � � � � 2 � �� � � � � � � � � . � � � � � � � � 0 � � � � � � � � � � � � � �� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �3 � � � � � � � : � � � � � 7 + � 1 . � � � � � � � � � � � � � � � �@ � � � � � � � � 7 ³ @ � ; ² L + > ; ; Q ´ : � � � � � � �� � � � � ; O + � � � � + � � � � � � � � � � � � � � � � � � � � � �. � � � � � � � � 1 � � 7 � � � 2 � � � � � � � � � � / � � �� 1 � � � � � . � � � � � � � � � � � � � � � � � � � � � � � � � � � +� � � � � � � � � � � � � � Q K + � � � � � D � � � � � � + . � / �. � � � � � ã � ä Û � � � å: � � à � � 0 � � � � � � � � � � � � � � 1 � � � � � � � � � � �� � � � � � � � � � 1 � � � � N � � � + D � � � � � � � � � � � � � � 7� � � � � � 1 � � � � � � � � � � � � � � � � � Q ² O + � + > ; O

~ r n � � p l � æ æ ç w è æ f r i o i v l z n o p i k p i xr u p z p � o p r h p n m i k z i x r u p r o n v g w x o v p k l wg q � k l � p l � v m i g p � v r p } | q g i k h v o p r v p zu i g l r u p x p o o v r p � i o p z n k l � i n é v k m g n � p }

ê j n o r p o w v k � u r u v � � ë g p é v s g n z z h n z j z p l r i z p � j o p r u p � p k r p o m i v k r i x r u p { ì è ~ |r o n v g w x o v p k l g q y p o z v i k i x { j o r � z � k l w � p l � v m i g p � v r p } í u p ç î w ï p r p o z v k s g p h v o pm i o r v i k i x r u p n k r p k k n � n k � p p n z v g q � u n k s p l x i o i r u p o � n k l z � q o p ï i y v k s r u ph v k s k j r t g p x r t n k l n r r n � u v k s n ð j n o r p o w h n y p h v o p x i o n k i r u p o � n k l }¨ © ª ¤ � � ¢ � £ � � � � « ¬ ­ ¬ � ® ® ª � � ¢ � £ � � � ¯ ¡ ° � ¢ ± � � � � � � � � � � � � � � �   ¡ � ¢ £ � ¤   � ¥ ¦ § ¦ 15

The NorCa140A Transceiver Kit

NorCal40A

KCl

$145

$ 45

(shipping additional)

Sure, there are a few 40 meter cw kits out

there to choose from. But the NorCal 40A

stands apart from the rest with a unique

combination of custom features and

big-rig performance.

Open up most QRP rigs and you'll find a

rat�s nest of wires. Open up a '40A-a snap

with our quick-release latches-and you�ll

find clean, no-wires construction that's

worth showing off! Performance is equally

impressive: of several popular QRP rigs, the

'40A posted the best receiver sensitivity

(�137dBrn; see June �96 QST. With its fast

QSK, 2W output, RIT, crystal filter and

ultra-stable VFO, the '40A

is a joy to operate.

Add your own accessories, or outfit your

NorCal 40A as pictured above with the

legendary KCl Keyer and Morseoutput

Frequency Counter. The KCl is so small it�ll

fit into any rig, but it�s a perfect match for the

'40A. The KCl�s message memory and Iambic

A and B modes provide operating flexibility.

Running from batteries? The '40A and KCl

together draw only 20mA on receive! Please

call or write for more details.

P.O. Box 3422. Joplin, MO 64803-3422 (417) 782-1397

http://www.fix.net/~jparker/wild.html

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õ ÷ ÷ ò ÷ õ ó � � ÷ ò ö � � þ ô � ô ÿ ò ò ý ÷ � � ô ÿ ò ü ý ý ò öú � ý ÷ � ú ô � ö � � ô ô ÿ ò ú ò ý ô ò ö � � ü ý ô � � ô ÿ òõ ý ô ò ý ý õ ô ÿ ò ú � õ � ó � � ô ò ö ø ö õ ü ÷ ü ó ý � ô ú � ý �ý ò ú ô ò ÷ ô � õ ý ù ô ÿ ü ý þ �: � � � � � � � � 0 1 � � � � 1 � � � � � � � � � � � � � � � +� � � � � � � � � � � � � � � � � � � � ³ � � � � � � � � � � � � � � �1 � � � � � � � � � � � � ´ � � � . � � � � � � � � � � � . � � � �� � � � � � � � � � � � � � � � � � � ! " � # � " � $ � � % � # � % � � & " � '� � # ! ! � ' � % � ( ) * ' � * ! & $ � � # + & " � "� , ( ( � - # � , . - & / � � % � # � + # � � � - & / % � � ' / + � / � & � � # / & " 0 / � # � � 1 � � " + � � % �2 ! � � - $ ! + � � - & � 0 ! + � # � � � 3 " % + 4 � � � 0 5 *� # + / � � � - & / % � � ' # 6 � % � 7 0 + # � � # � + 4 �6 � + � 0 # � 6 � & � ' # � % � � - & $ ! � � - # � 8 � % + � 3 �9 9 * ' � � � � 9 * - & / % � � 6 - & 0 � ( * - & / % � � � # 9 9 *' � � � � : * - & / % ; , < % + � 3 � % � ! & $ � % � � - & $ ! �� - # � � 0 ! " & � � " � 5 � ,= > ? @ A > > @ B C D E F B C G H A B I > J > A K B I C D EL C J @ > G J M K C A C A > > A @ C D B I > L H A K J > N H G >E A @ E J C C O C D B I > N H G > B I G C M K I E L P E J JQ J > R H K J E L L H A L M J E B C G E B B I > C B I > G > A @ S T I > A UV > E L M G > B N H F > S W M B � � � � : � � � � � � � 7 � � � � à � � 0 � � � � � � � � � � � �� � � � � � � � � � 1 � � � � � � � � � � � � � � � � � � � � � � 1 +� � � � � � 1 � � � � � � 2 . � � � � � � � � � � � � � � � � � G+ � � � � � � � � � � + . � � � � � � + . � � � � � �� � � � � � � � � � � � � � . � � � � � � � � � � � +� � � � � � � 1 � � � � � � . � � � � � � @ P +> ² Q S � � � � � � � � � � � � � � � � � � � � � � � � +� � � . � � � 1 � � � � � � � � � � � � � � � + : � � � � � � � � � � � � � � . � � � � � � � � � +

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Extra

Class

Contains the Complete 741-question FCC Element 4

question pool effective July 1, 2008 to June 30, 2012

Questions Reorganized for

Logical, Easy Learning

Educational Explanations

Teach You Extra Class

Fundamentals

Handy Extra Class Formulas

Over 100 Addresses of Helpful,

Educational Web Sites

Highlighted Key Words for

Every Explanation

Fully-illustrated Text

Aids Learning

Frequency Chart Shows

Privileges

List of VEC ExaminersUPGRADE TO THE

HF WORLDWIDE HAM LICENSE

Amateur Radio Element 4

FCC License Preparation

Gordon West, WB6NOAand The W5YI Group

Technician Class for the2010-14 entry-level exam!Gordo has reorganizedthe questions into logicaltopic groups for easierlearning! Key words arehighlighted in the expla-nations to help youunderstand the materialfor test success. Web

addresses for more than 125 helpful,educational sites. GWTM $20.95

Tech Book & Software PackagePackage includes Gordo’s book andWin-dows program that allows you to study atyour computer and take practice exams.Gordo’s explanations from the book arenow on the software! Free Part 97 RuleBook. NCS $39.95

Tech Audio Course on CDTechnician Theory Course recorded byGordo walks you through what you needto know for the Element 2 exam. Greatstudy companion to his Technician Class

book, and an excellent study aid if youspend a lot of time in your car or truck!4 audio CDs. GWTW $27.95

WR