Andrews Communications - Amateur Radio Antennas

AOR DA-3000 discone antenna, 75-3,000MHz, 10m of RG-58 w/N plug

$249.00

ARROW 146/437-10 handheld type yagi antenna for satellite operation!

$259.00

ARROW 146/437-BP has split boom and includes carry bag

$269.00

ARROW Mk.II 146/437-10WBP has 10W diplexer, split boom, cable

$319.00

ARROW 10W diplexer - available separately

$139.00

Butternut HF-6V 80-40-30-20-15-10m vertical, 7.9m tall

$599.00

Cushcraft R8 40-30-20-17-15-12-10-6m vertical, 8.7m tall

$999.00

Hustler 4BTV 40-20-15-10m vertical, 6.5m tall

$399.00

Hustler 5BTV 80-40-20-15-10m vertical, 7.5m tall

$499.00

Hustler 6BTV 80-40-20-15-10m + 30m vertical, 7m tall

$599.00

Hy-Gain 18AVQ Mk.II 80-40-20-15-10m vertical

$449.00

Hy-Gain DX-88 8-band 80-40-30-20-17-15-12-10m vertical, 8m tall

$799.00

Hy-Gain GRK-88, ground plane radial kit for DX-88 antenna

$149.00

Hy-Gain TH-7DXX 7-element 20-15-10m dual-driven el. yagi

Now $1499.00

Hy-Gain antennas - available on your order

P.O.A.

OPEK HVT-400B 80m-70cm tapped mobile whip, 1.75m, 120W rated

$119.00

TGM COMMUNICATIONS manufactures mainly HF and VHF mini beams.
We are TGM's exclusive Australasian agent. We supply to your order.
Beware of those who falsely claim to be authorised TGM dealers.

P.O.A.

Radio Wavz G5RV 80m-10m broadband dipole with SO-239 termination

$119.00

USA 2" diameter 3/8" 24tpi heavy duty ball-mount antenna base

$59.00

Check out antennas from MFJ and other manufacturers on our antenna pages. We stock Australia's widest range of amateur radio antennas.

Page updated 10/09/10

Some recommendations re installing HF multiband vertical antennas...

1. MOUNTING ON A METAL ROOF, USING A METAL POLE

If you have access to a flat, or slightly pitched, metal roof then you should mount your HF vertical on top of a 2-3m long metal pole placed in the centre of that roof. The larger the surface area of a shed's roof, then the higher the vertical should be mounted above that roof in order to reduce the increased radio wave reflection caused by the roof's larger metal surface area. This reduces the radiation angle and also reduces detuning of the antenna downwards in frequency.
In this example, the guying radials don't need to be metal and, in fact, there is no need for them to be metal.
Polyester rope of, say 6mm in diameter, is recommended for guying.
If mounting the HF vertical on a full metal shed then you should ground the shed in at least two diagonally opposing corners.

2. MOUNTING ON A METAL VERTICAL POLE WITH WIRE RADIALS

If you want to reduce your vertical's ground losses but not increase its angle of radiation then you should mount your vertical on top of a 3m-4m long metal pole. Do not mount it at, or just above, ground level!
Next, run 4 or more wire radials (these can also be used as guy wires) from just under the HF vertical down to ground level at an angle of between 20 to 50 degree angle (from horizontal). An angle of 45 degrees is best, for several reasons.
Next, place a circle of wire at ground level with your vertical's mounting pole at the centre of this circle. Securely attach the ends of each wire radial along this circle, thereby forming a skeletal conical shaped ground plane.
This arrangement reduces the need to install one or more 1/4 wavelength long (+5%, less K factor) ground plane radials per band, whilst still providing a good ground plane effect.

3. MOUNTING ON A METAL VERTICAL POLE W/ALUMINIUM RADIALS

Obtain three (3) 4m lengths of, say 19mm diameter, aluminium tubes.
Drill two closely spaced holes halfway along each tube to allow for the fitting of one U-bolt per tube.
To physically strengthen each radial insert up to a 1m long aluminium tube (say 16mm dia.) inside each tube, centred within the 19mm dia. aluminium tubes, before drilling.
Fit one U-bolt at the halfway point along each tube, ensuring each U-bolt will clamp around the vertical antenna's supporting metal pole.
Next, loosely clamp all three tubes to the mounting pole, just underneath where the vertical antenna is mounted. Splay the tubes out, then tighten all three U-bolts. This arrangement creates six (6) 2m long radials spaced 60 degrees apart.
To enhance the ground plane effect, simply clamp multi-stranded wire from one radial's tip to the next radial's tip, thereby forming a circle. The ground plane assembly will then look similar to a "wagon wheel", when viewed from above or below.
This assembly approximates the effective ground plane found in average suburban areas for ground mounted verticals. Multiband trapped HF verticals are tuned for operation in such installations.

Amateur radio antennas HVT-400B 80m-70cm mobile multi-tapped whip...A$119 We despatch antenna orders two to three times daily! Updated 09-12-11
Type	Price $(AUD)
AOR DA-3000 discone antenna, 75-3,000MHz, 10m of RG-58 w/N plug	$249.00
ARROW 146/437-10 handheld type yagi antenna for satellite operation!	$259.00
ARROW 146/437-BP has split boom and includes carry bag	$269.00
ARROW Mk.II 146/437-10WBP has 10W diplexer, split boom, cable	$319.00
ARROW 10W diplexer - available separately	$139.00
Butternut HF-6V 80-40-30-20-15-10m vertical, 7.9m tall	$599.00
Cushcraft R8 40-30-20-17-15-12-10-6m vertical, 8.7m tall	$999.00
Hustler 4BTV 40-20-15-10m vertical, 6.5m tall	$399.00
Hustler 5BTV 80-40-20-15-10m vertical, 7.5m tall	$499.00
Hustler 6BTV 80-40-20-15-10m + 30m vertical, 7m tall	$599.00
Hy-Gain 18AVQ Mk.II 80-40-20-15-10m vertical	$449.00
Hy-Gain DX-88 8-band 80-40-30-20-17-15-12-10m vertical, 8m tall	$799.00
Hy-Gain GRK-88, ground plane radial kit for DX-88 antenna	$149.00
Hy-Gain TH-7DXX 7-element 20-15-10m dual-driven el. yagi	Now $1499.00
Hy-Gain antennas - available on your order	P.O.A.
OPEK HVT-400B 80m-70cm tapped mobile whip, 1.75m, 120W rated	$119.00
TGM COMMUNICATIONS manufactures mainly HF and VHF mini beams. We are TGM's exclusive Australasian agent. We supply to your order. Beware of those who falsely claim to be authorised TGM dealers.	P.O.A.
Radio Wavz G5RV 80m-10m broadband dipole with SO-239 termination	$119.00
USA 2" diameter 3/8" 24tpi heavy duty ball-mount antenna base	$59.00
Check out antennas from MFJ and other manufacturers on our antenna pages. We stock Australia's widest range of amateur radio antennas.	Page updated 10/09/10
Some recommendations re installing HF multiband vertical antennas... 1. MOUNTING ON A METAL ROOF, USING A METAL POLE If you have access to a flat, or slightly pitched, metal roof then you should mount your HF vertical on top of a 2-3m long metal pole placed in the centre of that roof. The larger the surface area of a shed's roof, then the higher the vertical should be mounted above that roof in order to reduce the increased radio wave reflection caused by the roof's larger metal surface area. This reduces the radiation angle and also reduces detuning of the antenna downwards in frequency. In this example, the guying radials don't need to be metal and, in fact, there is no need for them to be metal. Polyester rope of, say 6mm in diameter, is recommended for guying. If mounting the HF vertical on a full metal shed then you should ground the shed in at least two diagonally opposing corners. 2. MOUNTING ON A METAL VERTICAL POLE WITH WIRE RADIALS If you want to reduce your vertical's ground losses but not increase its angle of radiation then you should mount your vertical on top of a 3m-4m long metal pole. Do not mount it at, or just above, ground level! Next, run 4 or more wire radials (these can also be used as guy wires) from just under the HF vertical down to ground level at an angle of between 20 to 50 degree angle (from horizontal). An angle of 45 degrees is best, for several reasons. Next, place a circle of wire at ground level with your vertical's mounting pole at the centre of this circle. Securely attach the ends of each wire radial along this circle, thereby forming a skeletal conical shaped ground plane. This arrangement reduces the need to install one or more 1/4 wavelength long (+5%, less K factor) ground plane radials per band, whilst still providing a good ground plane effect. 3. MOUNTING ON A METAL VERTICAL POLE W/ALUMINIUM RADIALS Obtain three (3) 4m lengths of, say 19mm diameter, aluminium tubes. Drill two closely spaced holes halfway along each tube to allow for the fitting of one U-bolt per tube. To physically strengthen each radial insert up to a 1m long aluminium tube (say 16mm dia.) inside each tube, centred within the 19mm dia. aluminium tubes, before drilling. Fit one U-bolt at the halfway point along each tube, ensuring each U-bolt will clamp around the vertical antenna's supporting metal pole. Next, loosely clamp all three tubes to the mounting pole, just underneath where the vertical antenna is mounted. Splay the tubes out, then tighten all three U-bolts. This arrangement creates six (6) 2m long radials spaced 60 degrees apart. To enhance the ground plane effect, simply clamp multi-stranded wire from one radial's tip to the next radial's tip, thereby forming a circle. The ground plane assembly will then look similar to a "wagon wheel", when viewed from above or below. This assembly approximates the effective ground plane found in average suburban areas for ground mounted verticals. Multiband trapped HF verticals are tuned for operation in such installations.

Amateur radio antennas