DECEMBER 1 988
THIS IS THE VIEW inside our
rugged new 120W public address
amplifier. This month, we
describe the circuit and show
you how to assemble the PCBs.
See page 26
FEATURES
4 Electronics & Holden's V6 Engine by Leo Simpson
The end of the distributor
18 Harman Kardon P~665Vxi Amplifier by Leo Simpson
A high power, high current design
42 Kit Clinic & the 1 00W Power Module by John Clarke
How we solved one reader's problems
76 The Evolution of Electric Railways by Bryan Maher
Pt.14: Why diesel-electrics killed off steam
PROJECTS TO BUILD
WANT REALISTIC SOUND
effects for your model railroad
layout? Our new diesel sound
generator has all the desired
features. Construction starts on
page 50
26 120 Watt Public Address Amplifier by Bob Flynn
The microphone preamplifier and mixer stages
34 Simple Car Antenna Adaptor by John Clarke
Use your rear window demister as an antenna
50 Build a Diesel Sound Generator by Greg Swain
The sound follows the locomotive
SPECIAL COLUMNS
14 Vintage Radio by John Hill
Restoring the dial mechanism
44 The Way I See It by Neville Williams
Would you please pass the salt? I need a few grains
62 Serviceman's Log by the original TV serviceman
The customer has no idea
70 Amateur Radio by Garry Craft
Simple SSB adaptor for shortwave receivers
OUR INTREPID SERVICEMAN
this month battled both the set
and the customer. His
frustrations with both begin on
page 62
DEPARTMENTS
2 Publisher's Letter
3 Mailbag
59 Circuit Notebook
83 Subscription Page
84 Product Showcase
90 Ask Silicon Chip
92 Back Issues
96 Market Centre
96 Notes & Errata
FED UP WITH REPLACING
you car radio antenna? This
gadget will let you use your rear
window demister instead. We
show you how on page 68
DECEMBER 1988
1