AOR WA7000 brochure

WA7000 wide range receiving aerial

The WA7000 aerial is designed for a very wide receive range of 30kHz to 2GHz. The aerial
is active on the lower band 30kHz - 30MHz using a Power MOS FET amplifier for superior
performance in the HF range.

The aerial amplifier contains a protection neon tube. This will help prevent damage to the
FET when encountering high RF fields or static discharge. Remember however like all
active aerials, there is only so much a protection device can do, for this reason make sure
the aerial is sited well away from a transmission aerial, power cables etc. Consider future
accessibility should you need to service the amplifier at some later stage.

The WA7000 should be sighted as high as possible and in clear space. Operation from a
low laying location of loft space could be disappointing.

Caution:

This aerial is designed for receiving ONLY. Please do not attempt to transmit through it as
damage to the aerial and possibly transmitter will occur which will not be covered by
warranty.

Assembly:

Fit the two amplifier attachment clamps to the amplifier pole using the
provided lock screws. Ensure you have identified the TOP of the
amplifier... this is the shorter of the two threads with a washer in place
(the bottom of the amplifier has a longer thread and a flange).

Fit the whip aerial by gently screwing into the top of the amplifier. The
top whip is secured into the loading coil by a grub screw, ensure it is
tight and if necessary use screw-lock or a dab of super glue to ensure
wind vibration cannot loosen the whip.

WA7000

MAST

Before entering the building,
make a drip loop to help prevent
water intrusion into the control
box. Connect the coaxial connect­ing lead via the ‘M’ type metric
PL259 connector to the control
box. Connect the BNC lead / plug
to a suitable receiver. Insert the
DC power connector to the control
box and plug the mains supply into
an outlet socket.

Should you wish, you may use a
different regulated power supply.
It should have a regulated output
of at least 100mA and voltage of
12 to 13.8V. Connection is via a

2.1mm dual concentric plug wired positive centre. A DC fuse is fitted to
the rear of the control box rated at 800mA. Never connect the WA7000 or
control box directly to a mains outlet.

Operation:

When correctly connected, depress the front panel band change rocker
switch (see-saw) to select 0.1 - 30MHz. The red light (L.E.D.) will
illuminate to indicate power is being fed to the amplifier. The receiver can
now be tuned across the shortwave and lower frequency bands.

TO

AERIAL

TO

RECEIVER

Attach the ‘hood’ end of the coaxial patch lead to the bottom of the amplifier by
screwing into place. Apply the adhesive material around the plug to make the
connection water-tight and the ‘hood’ fit tightly. Ensure the tape if fully extended

TOP

when wrapping to ensure the tightest fit. It is common practise to make a
small drain hole at the bottom of the ‘hood’ to allow water build up due to
condensation to drain... make sure you do not damage the coaxial cable.

Attach the aerial to a mast of about 40mm diameter (not supplied) using the
two supplied "U" clamps and nuts, the mast should be mounted vertically and
as high as possible.

Run the coaxial cable to your listening location, the path should not be
important but avoid power cables, TV downleads and computers. Should you
need to remove the ‘M’ type metric PL259 make sure you have a spare to re-fit,
if you have difficulty in locating a plug then another is obtainable from AOR UK
for a small charge.

If you need to extend the cable, always use a good quality 50 OHM coaxial cable such as
UR43 or UR76 (or quality RG58/U) and low loss connectors. If a long lead is required
(20m plus), consider replacing the entire run with a heavier duty low loss cable such as
UR67 or RG213.

AOR (UK) LTD. 4E East Mill, Bridgefoot, Belper, Derbyshire. DE56 2UA. Tel: [phone]

For operation above 30MHz depress the front panel selector, the light will

go out. In this condition no power is provided to the amplifier and the
receiver may be tuned across the upper coverage of 30MHz to 2GHz. The whip is base and
centre loaded for a wide coverage with peaks being at 150MHz and above 800MHz.

Should the wrong band be selected, a large drop in received signal will be experienced.
If the WA7000 is only to be used on the VHF-UHF bands, the control box can be by-passed

by connecting the coaxial feeder directly to the receiver (a coaxial gender adaptor may be
required).

Troubleshooting:

No Light - Check the mains power supply is correctly functioning (12V DC output) and
connected to the control box. Check the fuse is intact and has not blown due to a short circuit
in the coaxial lead.

Poor reception - Check that the amplifier is the correct way up! Test for continuity and short
circuits in the coaxial cable, carefully check plugs especially if they have been changed
during installation.

Specification:

Useable frequency rage: 30kHz to 2GHz
Gain: 6dB maximum 30kHz to 30MHz

0dB maximum 30MHz to 2GHz

Impedance: 50 OHM
Wind endurance: 50m per second
Acceptable support mast: 25 - 60mm diameter
Total length: 825mm
Coaxial cable: 15m of Quality RG58/U with ‘M’ type metric PL259
Power source: 12V DC @ 100mA (AC adaptor supplied)