October 1991
FEATURES
THIS MAGNETIC FIELD strength
meter features an LCD readout &
is capable of measuring
magnetic field strengths from 020mT over three ranges. Build it
& check the field strengths in
your home. Details page 12.
8 Road' Testing The HP54601 A 100MHz CRO by Leo Simpson
The first of a new generation
86 The Story Of Electrical Energy, Pt.14 by Bryan Maher
Making electrical energy use more efficient
PROJECTS TO BUILD
12 Magnetic Field Strength Meter by John Clarke
Check your exposure to power line fields
32 SteamSound Simulator Mk.1I by Darren Yates
New version fits in the locomotive's tender
54 Build A Talking Voltmeter For Your PC, Pt.1 by Darren Yates
It talks and gives an on-screen readout
60 Digital Altimeter For Gliders & Ultralights, Pt.2 by John Clarke
ARE YOU INTERESTED in model
railroads? This new version of
the SteamSound Simulator will
work with a wider range of locos
& is more compact so that it can
be mounted in the tender, rather
than a following wagon. See
page 32.
Second article has the circuit details
SPECIAL COLUMNS
20 Serviceman's Log by the TV Serviceman
Murphy has two bob each way
42 Computer Bits by Jennifer Bonnitcha
Getting the PIF with \l\lindows
68 Amateur Radio by Garry Cratt
Optimising HF antennas for multihop operation
72 Vintage Radio by John Hill
Two vintage radio museums
80 Remote Control by Bob Young
The military applications of radio-controlled aircraft
FANCY A VOLTMETER that
talks? - just build this simple
project & combine it with the PC
Voice Recorder described in the
August issue. It plugs directly
into the printer port of your PC &
also gives an on-screen display.
Pt.1 begins on page 54.
DEPARTMENTS
3 Publisher's Letter
26 Circuit Notebook
40 Back Issues
53 Bookshelf
76 Product Showcase
2
SILICON CHIP
90 Ask Silicon Chip
93 Subscription Page
94 .Market Centre
96 Advertising Index
Note: space restrictions have
again made it necessary for us to
hold over Pt.3 of the CD Error
Analyser. This article will now
be published in the November
issue.