Practical
Electronics
Volume 50. No. 12
December 2021
ISSN 2632 573X
Contents
Projects and Circuits
Easy-to-build Digital AM/FM/SW Receiver by Charles Kosina
16
Digital radios are very capable, but can be complicated and costly. Not this one,
though! It uses the BK1198 digital radio chip, which is cheap and readily available.
Balanced Input and Attenuator for the USB SuperCodec – Part 1
by Phil Prosser
his co act alanced in ut attenuator fits into the sa e instru ent case as the
SuperCodec. Together, they form a potent recording and/or measurement system.
28
Mini Digital Volt/Amp Panel Meters by Jim Rowe
36
We take a look at some low-cost digital panel meters that display voltage and current
at the sa e ti e see hat s inside the and hether they re easy to use.
Series, Features and Columns
The Fox Report by Barry Fox
Not all tech progress is for the better
tekkiepix pic of the month – Early professional VTR from the BBC
8
Techno Talk by Mark Nelson
Miraculous Transformation
10
Net Work by Alan Winstanley
The latest topical news about technology and trends from the world of the
Internet and beyond.
12
a s Cool eans y ax The agnificent
Flashing LEDs and drooling engineers – Part 22
42
KickStart by Mike Tooley
Part 6: Exploring DDS
48
Circuit Surgery by Ian Bell
ogarith ic and
onential
lifiers
art
Audio Out by Jake Rothman
Analogue Vocoder – Part 2
60
Electronic Building Blocks by Julian Edgar
Standalone programmable stepper motor controller
64
Wireless for the Warrior
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Next month! – highlights of our next issue of Practical Electronics
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Regulars and Services
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Made in the UK.
Written in Britain, Australia,
the US and Ireland.
Read everywhere.
© Electron Publishing Limited 2021
Copyright in all drawings, photographs, articles,
technical designs, software and intellectual property
published in Practical Electronics is fully protected,
and reproduction or imitation in whole or in part are
expressly forbidden.
The January 2022 issue of Practical Electronics will be
published on Thursday, 2 December 2021 – see page 72.
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