TO CHANGE THE SIZE OF THE WINDOW :
HOLD DOWN KEY : Ctrl & ROLL THE MOUSE WHEEL
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TO RETURN TO THIS HOME PAGE = CLICK LEFT FACING ARROW AT TOP LEFT HAND CORNER
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
TO CHANGE THE SIZE OF THE WINDOW :
HOLD DOWN KEY Ctrl & ROLL THE MOUSE WHEEL
VK2IAUALLCOAXMULTIBANDANTENNA (BMCA refer log book 1-9-18 )
/ mm ( SHOWBOAT )
MODE FREQ. TX PWR SWR SWR ATU NOTES
29.150 to 29.290
29 FM SIMPLEX ON NO CW
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29.150 5 1.125 “
100 2.5 “
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“ 29.240 5 1.8 “
100 2.6 “
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“ 29.290 5 1.125 1.125 “
FM SIMPLEX 100 2 1.6 ON
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- - - - - - - - - - - - - - - - - - -
MODE FREQ. TX PWR SWR SWR ATU NOTES
29 FM SIMPLEX
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“ 29.600 5 1.125 ON
FM SIMPLEX 100 1.7 “
- - - - - - - - - - - - - - - - - - -
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MODE FREQ. TX PWR SWR SWR ATU NOTES
# 29 FM RPTRS ON NO CW
# VK2RMB 29.120 5 1.3 1.15 “
NEG. OFFSET 100 1.8 1.1 “
# VK2RRU 29.140 5 1.12 1.1 “
NEG. OFFSET 100 1.4 1.1 “
# VK2RUW 29.620 5 1.12 1.1 “
NEG. OFFSET 100 1.8 1.35 “
WOLLONGONG
# VK2RBM 29.670 5 1.1 “
NEG. OFFSET 100 ON
BLUE MNTS.
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TO RETURN TO THE " HOME PAGE " CLICK ON THE LEFT ARROW AT THE TOP LEFT HAND CORNER OF THIS WINDOW
VK2IAUALLCOAXMULTIBANDANTENNA (BMCA refer log book 1-9-18 )
/ mm ( SHOWBOAT )
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MODE FREQ. TX PWR SWR SWR ATU NOTES
50.000 to 50.080 CW ONLY NARROW BAND MODE
# 50.000 5 NIL OFF
100 NIL “
# 50.080 5 2.2 NIL “
100
- - - - - - - - - - - - - - - - -
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# 50.110 5 2.2 NIL “ CW or VOICE
100
VK2IAUALLCOAXMULTIBANDANTENNA (BMCA refer log book 1-9-18 )
/ mm ( SHOWBOAT )
MODE FREQ. TX PWR SWR SWR ATU NOTES
51.000 to 51.200 all modes
# 51.000 5 NIL OFF
100 1.65 1.1 “
- - - - - - - - - - - - - - -
# 51.200 5 1.35 OFF
100 1.65 “
VK2IAUALLCOAXMULTIBANDANTENNA (BMCA refer log book 1-9-18 )
/ mm ( SHOWBOAT )
MODE FREQ. TX PWR SWR SWR ATU NOTES
52.100 to 52.500 CW or VOICE NARROW BAND MODE
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52.100 5 1.7 OFF
100 1.8 “
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VK2IAUALLCOAXMULTIBANDANTENNA (BMCA refer log book 1-9-18 )
/ mm ( SHOWBOAT )
MODE FREQ. TX PWR SWR SWR ATU NOTES
53.125 to 53.500 VOICE ONLY 53.525 VOICE ONLY
# FM SIMPLEX
53.125 5 2.3 N/A
100 2.8 “
53.000 5 1.125 “
100 2.8 “
53.525 5 1.1 “
100 1.125 “