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Example phase box for dual band arrays.  All arrays use the same design phase box.  The red circles show the two shunts per band as designed by W1MK in the 5th edition of ON4UN's Low Band DXing chapter 11 section 3.4.6.6 

4 Square array for 40M and 80M (10M / 12M array in background)

 

4 Square array for 20M and 30M

4Square array for 15M and 17M

4 Square array for 10M and 12M

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1888841 Last modified: 2015-04-20 01:05:49, 1454 bytes

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