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
VK2IAU = SOME QSO.s MADE WITH THE ALLCOAXMULTIBANDANTENNA
1.815 VK2FMJW CW 100w NO ATU
3.522 VK2BJ CW 5w NO ATU
3.610 VK7JU LSB 5w NO ATU
7.025 W1YL/7 CW 50w
7.026 W1YL CW 100w ATU ON
7.026 JA1NUT CW NO ATU
7.035 VK7BO CW 5w NO ATU
7.155 VK4HH LSB 5w NO ATU
14.002 FK8IK CW 5 /mm NO ATU
14.004 MHz /mm CW SM6GFR 10w NO ATU
14.013 FK8CE CW 5w NO ATU
14.024 EA8TR CW 100w NO ATU
21.035 ZL1T CW 30w NO ATU
28.390 VK2FTJW USB 100w NO ATU
28.390 VK2FTJW CW 100w NO ATU
29.150 VK2FTJW FM 100w NO ATU
50.500 VK2FTJW USB 5w NO ATU
50.200 VK2FTJW USB 5w NO ATU
146.500 VK2FTJW FM SIMPLEX 5w NO ATU
147.250 VK2FATS FM 10w NO ATU
VK2RMP 146.850 VOICE 10w NO ATU
VK2RMP /mm 146.850 KI7HYE IRLP 5w NO ATU
146.875 VK2HJW FM 10 w NO ATU
.146.875 VK2HJW USB 5w NO ATU
NOTE: THE ABOVE WAS ACHIEVED BY VARIOUS COMBINATIONS OF THE ANTENNAS " A and " B "AND THE 4m COUNTERWOUND COIL and THE 3.5m COUNTERWOUND COIL
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# FOR A FULL LIST OF VK2IAU QSO,s WITH THE VK2IAUALLCOAXMULTIBANBANTENNA
REFERENCE THE PAGES = VK2IAU QSO,s
BOAT TX RESULTS FT991A FEB. 2023
www.vk2iauallcoaxmultibandantenna.com
"NO ATU"FOR ALL RESULTS
(Unless shown otherwise )
# FT991A CONNECTION HF/50
MHZ TX PWR MODE NOTES
1.805 5 CW
3.506 100 "
7009 100 "
10.106 100 "
14.060 100 "
18.080 100 "
21.060 100 "
24.908 100 "
28.060 100 "
*FM SIMPLEX VOICE ATU ON
29.200 100
29.600 100
*FM RPTRS VOICE ATU ON
29.120 50
29.140 50
50.006 100 CW
50.080 100 "
50.200 100 "
51.100 100 "
52.250 100 "
*FM SIMPLEX VOICE
*53.300 100 "
# FT991A CONNECTION 143/430
MHZ TX PWR MODE
144.250 50 VOICE
145.300 50
*FM SIMPLEX
*146.500 50 VOICE
#FM SIMPLEX
*2m FM RPTRS
GROUP "A" and "B"
432.100 50 VOICE
NOTE: THE ABOVE WAS ACHIEVED BY VARIOUS
COMBINATIONS OF THE ANTENNAS " A and " B "
AND THE 4m COUNTERWOUND COIL and THE 3.5m
COUNTERWOUND COIL
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REFER TO PAGE " QSO,s " FOR A MORE COMPREHENSIVE
LIST OF CONTACTS
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TESTS/mm WITH THE 27MHz CB MARINE ANTENNA IN VARIOUS COMBINATIONS WITH THE 2 COUNTERWOUND COILS TO DETERMINE MAXIMUM TX POWER
1.86MHz CW 5w MAX. ATU ON
3.506MHz CW 100w ATU ON
7.028MHz CW 100w ATU ON
18.068MHz CW 100w ATU ON
21.060MHz CW 100w ATU ON
29fm simplex voice 100w ATU ON
29FM rptrs voice 100w ATU ON
50.006MHz CW 100w NO ATU narrow band mode
51.006MHz CW 100w NO ATU
52.100MHz USB 100w NO ATU narrow band mode
53FM simplex VOICE 100w NO ATU
# I NEED MORE TIME TO MAKE QSO,s WITH THE 27MHz
MARINE ANTENNA USING THE FT991A , BOTH/mm & FROM MY BOAT AT MY HOME BASE
( Patience STRONG: What is this life, if full of care , we have no
time to stand and stare , we have no time like sheep or cows ,
to stand and stare beneath the boughs ) ( ?? OR STAND & STARE ABOVE THE WAVES )
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