Practical Wireless 2012-01.pdf

ISSN 0141-0857

January 2012 £3.50

ISSN 0141-0857

The Eagle

Latest transceiver from

Ten-Tec reviewed

The Eagle

Practical Way

Building a Z-match tuner

Practical Way

Reviewed

The I-Pro Home

Reviewed

The I-Pro Home

Multi-band antenna

Design Peak

Peak and band-pass filters

Design Peak

Multi-band antenna

A Practical PIC Project

The PW PIC

The PW PIC Battery Voltage Monitor

Battery Voltage Monitor

Practical Wireless January 2012

contents

Volume 88. Number 1. Issue 1256. On sale 8th December 2011

6 Keylines

42 Readers’ Feed-back on Low Profile

Antennas

Rob G3XFD has been enjoying testing his new

antenna system with the help of WSPR and

suggests how fellow hobbyists could help less

physically-able Amateurs.

In this edition of What Next? Colin Redwood

G6MXL presents feed-back from readers’ own

experiences with low profile antennas.

Radio Waves – Readers’ Letters

46 PW Electronic Archives

Your chance to air your views and discuss top-

ics of interest.

Find out how you can get hold of copies of

PW’s Electronic Archives!

9 News

49 VHF World

See what’s happening and what’s of interest

in the world of Amateur Radio in this month’s

news pages.

Tim Kirby G4VXE takes his regular look at the

world of Amateur Radio above 30MHz and dis-

cusses some perceptions about v.h.f. activity!

52 Classic FRG-7000

14 Exploring The PIC Micro-controller

Chris Lorek G4HCL steps into the Valve &

Vintage ‘shop’ to give some handy advice and

tips on the Yaesu FRG-7700 h.f. receiver

Phil Cadman G4JCP introduces his new

series, which is aimed at providing a compre-

hensive introduction to using PICs in practical

projects.

58 The HF Bands Are Upwardly

Mobile!

16 Battery Voltage Monitor

Carl Mason GW0VSW has a jam-packed HF

Highlights column this month. Everyone has

been busy chasing the DX it seems!

Phil Cadman G4JCP has a practical PIC proj-

ect, for you to try out PICs, a monitor for 12V

lead-acid batteries that should prove most use-

ful!

61 Intermittent Fault?

20 An Introduction To SDR

Harry Leeming G3LLL says that, over the

past 50 years or so, he’s come across many

an intermittent fault – and they can cause so

much frustration!

Mike Richards G4WNC , takes a new direction

this month in his Data Modes column looking

at radio with a digital i.f. path!

64 Morse Cheat?

24 Reviewed – The Ten-Tec Eagle

Roger Cooke G3LDI remembers accusations

of cheating, in this month’s The Morse Mode

column.

Roger Cooke G3LDI is PW ’s ‘Morse

Correspondent’ and a keen h.f. operator. He’s

the ideal man to review the latest transceiver

from Ten-Tec!

66 In Vision

27 Building A Z-Match Tune r

Graham Hankins G8EMX muses on efforts in

Holland to increase ATV contest entries, and

again asks for help in saving some analogue

broadcast transmitting equipment for future

generations.

This month the Rev. George Dobbs G3RJV

describes the construction of a traditional

antenna matching tuning unit – the Z-match!

32 Return to the Peak!

48 Rallies

68 Classified Adverts

69 Bargain Basement

70 Traders’ Tables

72 PW Publishing Bookstore

76 Subscriptions

77 Topical Talk

In his Doing It By Design column, Tony Nailer

G4CFY looks again at peak and band-pass

filters.

36 Reviewed – The I-Pro Home Multi-

band Antenna

Dave Mason G3ZPR uses his h.f. operating

skills to evaluate the latest antenna from the

design desk of Carl Kidd G4GTW .

Front cover Design by Art Editor Steve Hunt.

Copyright © PW PUBLISHING LTD. 2011. Copyright in all drawings, logos, photographs and articles published in Practical Wireless is fully protected and reproduction in whole or part is expressly forbidden. All reasonable precautions are taken by

Practical Wireless to ensure that the advice and data given to our readers are reliable. We cannot however guarantee it and we cannot accept legal responsibility for it. Prices are those current as we go to press.

Published on the second Thursday of each month by PW Publishing Ltd., Arrowsmith Court, Station Approach, Broadstone, Dorset BH18 8PW. Tel: 0845 803 1979. Printed in England by Holbrooks Printers Ltd., Portsmouth P03 5HX. Distributed by

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