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INTRODUCTION TO THE vk2iau allcoax multiband antenna
The vk2iau coax multiband antenna is an RG58U coax cable multi strand core antenna configuration of 4 interchangeable
components , as follows:
A: antenna A = INVERTED V DPLE = 2.15m long EITHER SIDE OF THE INV V DPLE APEX . coax cable outer
braid radiating elements in parallel , plus feedline coax to radio
B: antenna B = SINGLE 2.15m long coax cable outer braid radiating elements in series,
plus feedline coax to radio
C: 3.5 metre long shorted coax , AS A COIL , counterwound on a small plastic cable drum and held in place by cable ties , the drum is then
covered in aluminium foil which is independantly earthed , all of this is then covered in a nylon stocking to protect the aluminium foil.
D: 4 metre long shorted coax , AS A COIL , as above
Note: ALL EXPOSED PARTS ARE COVERED IN ‘ ROOF & GUTTER SILICON “ , which , when cured is wrapped in electrical
tape note: impedance at the radio is achieved fully or in part by COMBINATIONS OF THE 4 interchangeable components
( as described above ) , to utilise inductance / capacitance to extend the the " frequency time " longer than the " frequency
physical length time of the radiating elements " thus preventing the signal from hitting a brick walland bouncing back as unwanted SWR .
NOTE 1: I have found the antenna system COMPACT and excellent for TX and RX from my 6m boat
NOTE 2: The coax cable is laid on the roof tiles of my house , very inconspicuos , almost " secret " . COULD BE USED DIGUISED
AS A WASHING LINE
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VK2IAUALLCOAXMULTIBANDANTENNA (BMCA refer log book )
ANTENNA B ONLY ( HOME BASE )
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www.vk2iauallcoaxmultibandantenna.com
ANT B HOME BASE QSO,s
MODE FREQ. PWR SWR SWR ATU NOTES
VOICE 146.865 65
VK2RMP ON NO 3.5m COIL
" " " 10 " " "
" " " 10 " " "
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MODE FREQ. PWR SWR SWR ATU NOTES
CW 3.525 90 ON LAID OUT STRAIGHT
LINE ON LAWN
WHEN RAINING
NO 3.5m COIL
" 3.525 50 " LAID OUT IN A CIRCLE
ON LAWN
WHEN RAINING
" NO 3.5m COIL
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MODE FREQ. PWR SWR SWR ATU NOTES
CW 14.032 50 OFF NO 3.5m COIL
14.012 40 " " "
14.030 100 " " "
14.016 90 " " "
7.009 90 " " "
7.026 40 " " "
7.012 " " "
7.032 100 " " "
3.525 100 " " "
14.065 90 " " "
3.522 5 " " "
7.025 50 " " "
3.523 5 " " "
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MODE FREQ. PWR SWR SWR ATU NOTES
CW 7.041 45 ON NO 3.5m COIL
" 7.025 50 " " "
" 14.024 100 ( EA8TR ) " " "
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LSB 3.550 50 OFF NO 3.5m COIL
" 3.575 100 " " "
" 7.105 100 " " "
" 3.610 5 " " "
" 3.597 5 " " "
" 3.610 5 " " "
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USB 14.142 40 OFF NO 3.5m COIL
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