PW 2006 07.pdf

Reviewed

Moonraker MLP62 Log

Periodic Antenna

Re i wed

Moonraker MLP62 Log

Periodic Antenna

Build

A Wide Spectrum

Receiver

Build

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

July 2006 £3.00

plus

plus much more and all your favourite regulars

h m

our

egula

july 2006

contents

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.

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)

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

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

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

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.

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.

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

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

Valve & Vintage Antennas

Something a little different this month as

we re-publish Tony Martin G4XBY ’s article

on experimental 430MHz antennas.

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.

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.

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.

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

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.

Amateur Radio Rallies A round-up of radio rallies taking

place in the coming months.

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.

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

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

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!

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 -

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Design: Steve Hunt

Background Photograph: David Butler G4ASR

Project Photograph: George Dobbs G3RJV

Practical Wireless

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