Full-color and full-resolution graphics from the pages of QRP Homebrewer

QHB #7 -- December 2001

 

Fun With Stubs by Dave Benson, K1SWL

 

Length (ft)

Feedpoint Impedance

 

134

72    +j0

 

120

52    -j189

 

100

32    -j461

 

  80

19.2 -j781

 

  60

10.1 -j1212

 

  20

1.05 -j3720

Configuration

Gain (dBi)-

zero loss

Gain (dBi)-

#12 copper

(Full size)

2.13

2.04

100' Inductor-

loaded

1.39

1.28

100' Linear-

loaded

1.27

0.82

 

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Last Modified: February 24, 2002