This is only a preview of the March 2021 issue of Practical Electronics. You can view 0 of the 72 pages in the full issue. Articles in this series:
|
The Fox Report
Barry Fox’s technology column
Fakes, scams and evasion
C
ovid has provided a golden
opportunity for scammers to
con the unwary – and even
the wary.
I bought a 2TB USB stick memory
which turned out to be a fake. I have
since learned that the crooks are using a controller unit which gives a
false reading for whatever memory
chips it is bonded to. So, using a
PC to check capacity is no guide.
Soon afterwards I was stung by a
2TB portable HDD which also failed
to store as much data as it should
have done. In each case I was able to
return the purchase and ask for a full
refund. But in each case I lost data.
Price is not necessarily a reliable
guide to fakery because the faker
may charge a high price to create
false confidence.
Fortunately, there are several free
software tools now available, such
as H2testw or FakeFlashTest. The
downside is that they can take days
to fully check a large capacity store.
Plus, they may lock up when they
hit a capacity problem.
On the face of things, fully formatting a new drive (not quick formatting) should show its true capacity.
But it is possible the fakers can – or
will soon – fake that too. Once a
faking chip is available there is no
way of limiting who uses it. This
probably explains why there are so
many 2TB fakes around.
Arguably the safest guide to genuine quality is the brand name. This
can of course also be faked, but
phoney products will usually look
cheap and phoney.
So, buy memory USBs and HDDs
from a source which has a friendly
return-and-refund policy that costs
only the price of the paper and ink
needed to print a pre-paid label.
1557 IP68 sealed enclosures
Answer or ignore?
The scammers are also having a field
day with scam phone calls, texts and
emails. Phone calls are easy and fun
to prolong if you have some time to
spare. Just give no personal details
and keep the scammer talking to
eat into the time they have to call
other, perhaps more gullible targets.
Be wary of replying to scam emails
and texts, however much fun it
might seem to be, because you are
just confirming that your ID address
is ‘live’.
I was recently shocked to hear
absurdly bad advice on scam emails
given out by a so-called expert on a
morning BBCTV programme. Talking
about online scams, he advised that
if anyone gets a scam email, then
they should ‘change their password’.
The fact that a scammer knows your
email does not of course mean that
they have access to your email account. It simply means that they
have harvested your email from any
one of countless possible sources.
Most people get multiple scam
emails every day, so anyone taking
the BBC’s ‘expert’ advice would be
changing their password several times
a day; and changing an email password
does not stop scam emails arriving.
!
w
ne
Learn more: hammfg.com/1557
Contact us to request a free evaluation sample.
uksales<at>hammfg.com • 01256 812812
8
Practical Electronics | March | 2021
I contacted the BBC who waffled
that the ‘expert’ was ‘simply offering
one way that a person can protect
themselves, but we appreciate you
did not agree with this advice.’ I have
now suggested that the BBC ask its
own IT Department to confirm that
it is not a matter of opinion but fact
that advising people to change their
password when they receive a scam
email is downright wrong; and it
is doubly worrying that an ‘expert’
advising millions is not willing to
admit and correct a mistake.
A great big non-answer
As recently reported (Fox Report,
February 2021) I asked the chief
executive of the Advertising Standards Authority, Guy Parker, for
his personal views on the ASA’s
competence to handle consumer
complaints about adverts with technical content; and I promised to
report back on any response.
With considerable difficulty I
did eventually squeeze a personal
response from Guy Parker, which
reads: ‘I recognise your frustration
about our newish complaint handling procedures, but my colleagues,
including members of my Senior
Management Team with responsibility for our Complaints and Investigations operation, have taken
time carefully and thoughtfully to
respond to your concerns, including
committing to review our procedures
in light of your helpful feedback.
I’ve nothing to add to that.
‘I disagree that the ASA is illequipped to judge ad claims for
consumer technology products and
services. On the contrary, we have
a great deal of experience judging
such claims.
‘While it’s obvious that our responses have not satisfied you,
there’s not much we can do about
that and I see nothing to be gained
from continuing to correspond. I
therefore consider the matter closed
and I won’t be replying if you choose
to write to me again.’
products and services that we now
see in the media; see: http://bit.ly/
pe-mar21-asa1
Readers can also search online for
any technical credentials among the
ASA’s management here: http://bit.
ly/pe-mar21-asa2
In the meantime, I have filed
another tech-related complaint,
regarding commercial promotion
of consumer tech products by a
consumer tech TV personality. So,
I can report firsthand that, thus far,
there is no sign of the procedural
changes needed to keep consumers
informed on the progress – or silent
dismissal – of their complaints.
This is two full months after the
ASA said it would ‘look to implement something’ based on my ‘very
helpful suggestion’.
Check for yourself
5-year collection
2015-2019
PE readers can look for themselves
at recent ASA rulings, and form
their own opinions on whether the
number that relate to adverts with
a technical slant reasonably reflects
the plethora of adverts for tech-based
NEW DOWNLOAD!
Purchase and download at:
www.electronpublishing.com
STEWART OF READING
17A King Street, Mortimer, near Reading, RG7 3RS
Telephone: 0118 933 1111 Fax: 0118 933 2375
USED ELECTRONIC TEST EQUIPMENT
Check website www.stewart-of-reading.co.uk
Fluke/Philips PM3092 Oscilloscope
2+2 Channel 200MHz Delay TB,
Autoset etc – £250
LAMBDA GENESYS
LAMBDA GENESYS
IFR 2025
IFR 2948B
IFR 6843
R&S APN62
Agilent 8712ET
HP8903A/B
HP8757D
HP3325A
HP3561A
HP6032A
HP6622A
HP6624A
HP6632B
HP6644A
HP6654A
HP8341A
HP83630A
HP83624A
HP8484A
HP8560E
HP8563A
HP8566B
HP8662A
Marconi 2022E
Marconi 2024
Marconi 2030
Marconi 2023A
PSU GEN100-15 100V 15A Boxed As New
£400
PSU GEN50-30 50V 30A
£400
Signal Generator 9kHz – 2.51GHz Opt 04/11
£900
Communication Service Monitor Opts 03/25 Avionics
POA
Microwave Systems Analyser 10MHz – 20GHz
POA
Syn Function Generator 1Hz – 260kHz
£295
RF Network Analyser 300kHz – 1300MHz
POA
Audio Analyser
£750 – £950
Scaler Network Analyser
POA
Synthesised Function Generator
£195
Dynamic Signal Analyser
£650
PSU 0-60V 0-50A 1000W
£750
PSU 0-20V 4A Twice or 0-50V 2A Twice
£350
PSU 4 Outputs
£400
PSU 0-20V 0-5A
£195
PSU 0-60V 3.5A
£400
PSU 0-60V 0-9A
£500
Synthesised Sweep Generator 10MHz – 20GHz
£2,000
Synthesised Sweeper 10MHz – 26.5 GHz
POA
Synthesised Sweeper 2 – 20GHz
POA
Power Sensor 0.01-18GHz 3nW-10µW
£75
Spectrum Analyser Synthesised 30Hz – 2.9GHz
£1,750
Spectrum Analyser Synthesised 9kHz – 22GHz
£2,250
Spectrum Analsyer 100Hz – 22GHz
£1,200
RF Generator 10kHz – 1280MHz
£750
Synthesised AM/FM Signal Generator 10kHz – 1.01GHz
£325
Synthesised Signal Generator 9kHz – 2.4GHz
£800
Synthesised Signal Generator 10kHz – 1.35GHz
£750
Signal Generator 9kHz – 1.2GHz
£700
HP/Agilent HP 34401A Digital
Multimeter 6½ Digit £325 – £375
HP 54600B Oscilloscope
Analogue/Digital Dual Trace 100MHz
Only £75, with accessories £125
(ALL PRICES PLUS CARRIAGE & VAT)
Please check availability before ordering or calling in
HP33120A
HP53131A
HP53131A
Audio Precision
Datron 4708
Druck DPI 515
Datron 1081
ENI 325LA
Keithley 228
Time 9818
Practical Electronics | March | 2021
Marconi 2305
Modulation Meter
£250
Marconi 2440
Counter 20GHz
£295
Marconi 2945/A/B
Communications Test Set Various Options
POA
Marconi 2955
Radio Communications Test Set
£595
Marconi 2955A
Radio Communications Test Set
£725
Marconi 2955B
Radio Communications Test Set
£800
Marconi 6200
Microwave Test Set
£1,500
Marconi 6200A
Microwave Test Set 10MHz – 20GHz
£1,950
Marconi 6200B
Microwave Test Set
£2,300
Marconi 6960B
Power Meter with 6910 sensor
£295
Tektronix TDS3052B Oscilloscope 500MHz 2.5GS/s
£1,250
Tektronix TDS3032
Oscilloscope 300MHz 2.5GS/s
£995
Tektronix TDS3012
Oscilloscope 2 Channel 100MHz 1.25GS/s
£450
Tektronix 2430A
Oscilloscope Dual Trace 150MHz 100MS/s
£350
Tektronix 2465B
Oscilloscope 4 Channel 400MHz
£600
Farnell AP60/50
PSU 0-60V 0-50A 1kW Switch Mode
£300
Farnell XA35/2T
PSU 0-35V 0-2A Twice Digital
£75
Farnell AP100-90
Power Supply 100V 90A
£900
Farnell LF1
Sine/Sq Oscillator 10Hz – 1MHz
£45
Racal 1991
Counter/Timer 160MHz 9 Digit
£150
Racal 2101
Counter 20GHz LED
£295
Racal 9300
True RMS Millivoltmeter 5Hz – 20MHz etc
£45
Racal 9300B
As 9300
£75
Solartron 7150/PLUS 6½ Digit DMM True RMS IEEE
£65/£75
Solatron 1253
Gain Phase Analyser 1mHz – 20kHz
£600
Solartron SI 1255
HF Frequency Response Analyser
POA
Tasakago TM035-2 PSU 0-35V 0-2A 2 Meters
£30
Thurlby PL320QMD PSU 0-30V 0-2A Twice
£160 – £200
Thurlby TG210
Function Generator 0.002-2MHz TTL etc Kenwood Badged £ 6 5
Function Generator 100 microHz – 15MHz
Universal Counter 3GHz Boxed unused
Universal Counter 225MHz
SYS2712 Audio Analyser – in original box
Autocal Multifunction Standard
Pressure Calibrator/Controller
Autocal Standards Multimeter
RF Power Amplifier 250kHz – 150MHz 25W 50dB
Voltage/Current Source
DC Current & Voltage Calibrator
£350
£600
£350
POA
POA
£400
POA
POA
POA
POA
Marconi 2955B Radio
Communications Test Set – £800
9
|