®		AOR (UK) Ltd
			Unit 9, Dimple Road Business Centre, Matlock, Derbyshire DE4 3JX, England Tel: +44 (0) 1629 581222  Fax: +44 (0) 1629 580070

General aerial text relevant to the UK - October 2001

Many AOR receivers have a very wide frequency range (AR5000, AR8600 etc), ideally you would be looking at a minimum of three aerials:

a) Long wire for short wave reception, magnetic long wire baluns are popular as it is not important to site the receiver directly next to a window as the cable feed is coaxial. Many companies supply such aerials and as 'kits' with feeder & support wire etc, try:

Haydon Communications
Unit 1, Thurrock Commercial Park
Purfleet Industrial Estate
London Road
Aveley
Essex RM15 4YA
Tel: 01708 862524

b) Discone or unipole aerial for general VHF/UHF reception. AOR produce the DA3000 discone, have a look at:

http://www.aoruk.com/da3000.htm 
http://www.aoruk.com/pdf/da3000.pdf 

Prices and order information from:

http://www.aoruk.com/rrp.htm 
http://www.aoruk.com/payment.htm 

Many companies produce UNIPOLE wide band aerials, they are typically priced around GBP 40.00, try:

Nevada Communications
Unit 1, Fitzherbert Spur
Farlington
Portsmouth
Hampshire
PO6 1TT
Tel: 023 9231 3090
http://www.nevada.co.uk 

c) Ideally a dedicated aerial for the frequencies of most interest. A few dedicated VHF airband aerials have been produced, try:

Haydon Communications
Unit 1, Thurrock Commercial Park
Purfleet Industrial Estate
London Road
Aveley
Essex RM15 4YA
Tel: 01708 862524

Lowe Electronics Ltd
Chesterfield Road
MATLOCK
Derbys DE4 5LE
Tel: 01629 580800
http://www.lowe-electronics.com 

Also, many SMALL dual band 145/435MHz amateur band colinears provide excellent results for airband, ham band, marine, public service etc. Limit the size to a 5/8th wave on 145MHz with 5/8 + 5/8 on 435MHz (about 4 feet in height), if you select a higher gain physically larger aerial then the workable receive bandwidth will be too narrow for general use and the angle of reception from the horizon will be too low, try:

Haydon Communications
Unit 1, Thurrock Commercial Park
Purfleet Industrial Estate
London Road
Aveley
Essex RM15 4YA
Tel: 01708 862524

Compromise:
It is possible to select one aerial to DO EVERYTHING but results will not be as good as separate aerials. One such aerial is the SA7000 which is designed to provide HF/VHF/UHF coverage in a single unobtrusive package:

http://www.aoruk.com/sa7000.htm 
http://www.aoruk.com/pdf/sa7000.pdf 

Prices and order information from:

http://www.aoruk.com/rrp.htm 
http://www.aoruk.com/payment.htm 


It may also be worth looking through our standard SELECTING AN AERIAL booklet, it is available from:

http://www.aoruk.com/aerials.htm 
http://www.aoruk.com/pdf/aerial.pdf 


When investing in a new aerial, I would recommend using good quality 50 OHM coaxial cable (UR43, UR76, RG58U for small runs and short wave, UR67, RG213 for longer runs at VHF/UHF). 70 OHM TV coax is not ideal and their plugs / sockets are frankly useless due to high losses of signal (a good TV signal is considered to be about 1mV, this is about one thousand times larger than a 1uV signal which will produce a good signal on a typical communication receiver).

The addresses above have been taken from the AOR UK dealer list, most of the dealers on the list should be able to provide a range of suitable aerial systems.  We have no special allegiance with those singled out above.

The addresses ending PDF are Acrobat PDF files, they require Adobe Acrobat Reader to view & print them (free utility). You can obtain Acrobat free from (quite a large download):

http://www.adobe.com/products/acrobat/readstep.html 

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