PW 2006 07.pdf
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Pobierz
Reviewed
Moonraker MLP62 Log
Periodic Antenna
Re i wed
Moonraker MLP62 Log
Periodic Antenna
Build
A Wide Spectrum
Receiver
Build
A
de Sp
trum
Receiver
SWR your
Antenna
Steve Telenius-Lowe
9M6DXX shows you
how!
SWR your
Antenna
Steve Telenius-Lowe
9M6DXX shows you
how!
Marconi
Celebrations
New Exhibition Opens
Marconi
ele t o
New Exhibition Opens
Digital Display
nit
ti
Digital Display
Units
Counting & Displaying
Frequencies
i
i
Frequencies
July 2006
£3.00
plus
plus much more and all your favourite regulars
h m
r
a
ll
a
our
egula
s
july 2006
contents
30
How to ‘SWer’
your Antennas
Steve Telenius-
Lowe 9M6DXX
joins the
PW
team,
and in his first offering he shares some
eminently practical ideas to help you get
the best out of your antenna.
15
Dayton Hamvention 2006
Hot news from this year’s Dayton
Hamvention in the United States.
July 2006
On Sale 8 June
Vol. 82 No. 7 Issue 1191
(August Issue on sale 13 July)
16
Doing It By Design
Tony Nailer G4CFY’s
back at his designer’s
desk, and this month he’s looking at
harmonic distortion and frequency
multipliers.
Published by
PW Publishing Limited
Ar owsmith Court
Station App oach
BROADSTONE
Dorset BH18 8PW
Directors: Stephen Hunt & Roger Hall
36 Antenna Workshop
David Butler G4ASR
has been busy this
month! This time he’s taking his turn in the
Antenna Workshop where he’s looking at
how to build a 4-element WA5VJB Yagi
antenna.
Editorial Department
0870 224 7810
Fax: 0870 224 7850
20
Moonraker MLP62
Log Periodic Antenna Review
Summer’s here and its the ideal time to test
out new antennas so, that’s just what
David
Butler G4ASR’
s been doing! He puts the
MLP62 v.h.f. log periodic through its paces.
Editor
Rob Mannion G3XFD/EI5IW
rob@pwpublishing.ltd.uk
Production Editor
Donna Vincent G7TZB/M3TZB
donna@pwpublishing.ltd.uk
Technical Editor
NG (Tex) Swann G1TEX/M3NGS
tex@pwpublishing.ltd.uk
Art Department
38
Counting & Displaying Frequency
Using simple or complex superhets you
can create a digital readout for a
transmitter or receiver -
Stef
Niewiadomski
explains how.
22 Wireless World -
Marconi & The Making Of Radio
Rob Mannion G3XFD
attended the
ceremonies and opening of the new home
for the Marconi Collection in Oxford. Here
he reports on the event and enjoyed
meeting
Princess Elettra Marconi
and
Marconi’s
Grandson Guglielmo
.
0870 224 7820
Fax: 0870 224 7850
Art Editor
Stephen Hunt
steve@pwpublishing.ltd.uk
Typesetting
Peter Eldrett
peter@pwpublishing.ltd.uk
Sales Department
Fax: 0870 224 7850
Advertisements
Roger Hall G4TNT
roger@pwpublishing.ltd.uk
42
Whipping Up Antennas
Military Style
You’ll never look at the humble whip
antenna in the same way again after you’ve
read
Ben Nock G4BXD
’s article. Ben looks
back at how the whip was developed by
the military.
28
Tolerances
Gerald Stancey G3MCK
, shows how using
a tolerance of inaccuracies can turn a vice
into a virtue. Puzzled? Read on to find out
what he means and why tolerance is
needed in the component world.
46
Carrying on the Practical Way
George Dobbs G3RJV
takes you into the
wider radio spectrum with his handy
project for a receiver.
0207 731 6222
Advertisement Administration
Joan Adams
joan@pwpublishing.ltd.uk
29
You Really Can’t Beat A Dipole!
If you’re short of an antenna for your
Amateur Radio station set-up,
John
Worthington G3COI
shares some
suggestions on suitable dipole designs.
0870 224 7820
Book Orders
bookstore@pwpublishing.ltd.uk
0870 224 7830
Subscription Administration
Webscribe
Practical Wireless Subscriptions
PO Box 464
Berkhamsted
Hertfordshire HP4 2UR, UK
pw@webscribe.co.uk
www.webscribe.co.uk
01442 879097
Fax: 01442 872279
48
Valve & Vintage Antennas
Something a little different this month as
we re-publish
Tony Martin G4XBY
’s article
on experimental 430MHz antennas.
6
Keylines
Topical chat and comments from our Editor. This
month the main topic under discussion by
Rob Mannion
G3XFD
is encouraging activity on the bands.
54
HF Highlights
Carl Mason GW0VSW
has the latest news
from the h.f. bands and by the look of his postbag it’s
been a busy month.
7
Amateur Radio Waves
You can have your say! There’s a
varied and interesting selection of letters this month as
the postbag’s bursting at the seams again with readers’
letters. Keep those letters coming in and making ‘waves’
with your comments, ideas and opinions.
56
Databurst
The popularity of software defined radio is
growing fast.
Jack Weber
gives a brief overview of what’s
available.
Finance Department
0870 224 7840
Fax: 0870 224 7850
Finance Manager
Alan Burgess
alan@pwpublishing.ltd.uk
Finance Assistant
Margaret Hasted
60
Book Store
If you’re looking for something to
complement your hobby, check out the biggest and best
selection of radio related books anywhere in our bright
and comprehensive revamped Book Store pages.
8
Amateur Radio Rallies
A round-up of radio rallies taking
place in the coming months.
9
Amateur Radio News & Clubs
Keep up-to-date with the
latest news, views and product information from the world
of Amateur Radio with our News pages - the news
basket’s been overflowing so, there’s a bumper dose this
month. Also, find out what your local club is doing in our
club column.
63
Bargain Basement
The bargains just keep on coming!
Looking for a specific piece of kit? Check out our readers’
ads, you never know what you may find!
PW Publishing Website
www.pwpublishing.ltd.uk
64
Subscriptions
Want to make sure you don’t miss a single
issue of your favourite radio read then why not subscribe
to
PW
in one easy step?
All our 0870 numbers are charged at the BT Standard National Rate
Cover subject
50
VHF DXer
This month
David Butler G4ASR
looks forward
to the summer Sporadic-E season, as well as rounding up
your reports.
Cover Subject
Summer is here - well
almost! As this is
traditionally the time of
year to try out and test
new antennas we got
David Butler G4ASR
busy with the
Moonraker MLP62 Log
Periodic Antenna. If you
fancy a little project
building why not try
your hand at G3RJV’s
simple receiver? Enjoy
this jam-packed issue!
65
Topical Talk
This month
Rob G3XFD
chats about round
the World Echo transmissions.
Copyright
© PW PUBLISHING LTD. 2006. Copyright in all drawings, logos, photog aphs and articles published in
Practical Wireless
is fu ly p otected and ep oduction in whole or part is exp essly forbidden.
All reasonable precautions are taken by
Practical Wireless
to ensu e that the advice and data given to our readers a e eliable. We canno however gua antee it and we cannot accept legal responsibility
for t Prices a e those current as we go to p ess.
Published
on the second Thursday of each month by PW Publ shing Ltd., Arrowsm th Court, Station App oach, B oadstone, Dorset BH18 8PW. Tel: 0870 224 7810 Printed in England by Holb ooks P inte s Ltd.,
Portsmouth P03 5HX Distributed by Seymour, 86 Newman St eet, London , W1P 3 D, Tel: 0207-396 8000, Fax: 0207-306 8002, Web http //www seymour co uk. Sole Agents for Aust alia and New Zealand -
Go don and Gotch (Asia) Ltd.; South Africa - Cent a News Agency. Subscriptions INLAND £32, EUROPE £40, REST OF WOR D £49, payable to PRACTICAL WIRELESS, Subscription Department PW
Pub ishing Ltd., Arrowsm th Court, Station App oach, Broadstone, Dorset BH18 8PW. Tel: 0870 224 7830 PRACTICAL WIRELESS is sold subject to the following conditions, namely that it shall not, w thout
written consent of the publishers fi s having been given, be lent, re-sold, hi ed out or otherwise disposed of by way of t ade at mo e than the ecommended selling price shown on the cover, and that it shall
not be lent, re-sold, hi ed out or othe wise disposed of in a mutilated condition or in any unauthorised cover by way of T ade, or affixed to or as part of any publication or advertising, lite ary or pictorial
matter whatsoever.
Practical Wireless
is Publ shed monthly for $50 per year by PW Publishing Ltd., Ar owsm th Court, Station App oach, B oadstone, Dorset BH18 8PW, Royal Mail International, c/o
Yellowstone International, 87 Burlews Court, Hackensack, NJ 07601. UK Second Class Postage paid at South Hackensack. Send USA add ess changes to Royal Ma l Inte national, c/oYellowstone
Inte national, 2375 Pratt Bouleva d, Elk G ove Village, IL 60007-5937. The USPS (United States Postal Se vice) number for Practical Wi eless is: 007075.
Design: Steve Hunt
Background Photograph: David Butler G4ASR
Project Photograph: George Dobbs G3RJV
Practical Wireless
5
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Inne pliki z tego folderu:
PW 2006 02.pdf
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PW 2006 01.pdf
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PW 2006 03.pdf
(11580 KB)
PW 2006 04.pdf
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PW 2006 05.pdf
(11251 KB)
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