= = = "Alan" wrote in message
= = = ...
"Mark" wrote in message
...
No, wait!!!

I have several Sony portables, but not the model you mention (7600D,
7600A,
2001D/2010, SW55). I (in New Zealand) also have the same Westminster
system
of power supply that you have in the UK, 240V phase-to-earth (415 volts
phase-to-phase), 50Hz. (I mention this because we have a
Mains-Earth-Neutral
setup, which USA does not, so other posters may be experiencing different
reasons for any interference or hum).

I use power supplies for all my radios, saves buying batteries all the
time.
Also, reception is better with the power supply hooked up (honestly, I
think
maybe I'm getting a better ground or something, but if you run on
batteries,
then plug in the power supply, the noise level drops).

One more point: some of my Sonys were supplied with a Sony power supply
and
some weren't. Don't bother buying a Sony power supply, they cost too much.
They will run perfectly well on a much cheaper multi-plug/multi-voltage
adapter you can buy quite cheaply. Never,ever had any noise problems.

Mark.

Hi
I have one of the type you mention (the multi-plug/volts etc) tried it out
on my Sony, but the hum was unbearable, That's why I thought the proper Sony
one might be better.
cheers
Alan


ALAN,

If you are having "Noise Problems" using an ACDC Adapter with
a 'portable' Shortwave Radio.

First "Test" your AC Power Outlets for proper wiring and Grounding.

Often an 'incorrectly wired' AC Outlet or 'poorly grounded' AC
Outlet can be the "Source" of many AC Noise related problems.

iane ~ RHF

..

Snip Cut

ALAN,

If you are having "Noise Problems" using an ACDC Adapter with
a 'portable' Shortwave Radio.

First "Test" your AC Power Outlets for proper wiring and Grounding.

Often an 'incorrectly wired' AC Outlet or 'poorly grounded' AC
Outlet can be the "Source" of many AC Noise related problems.

iane ~ RHF

.
Cheers RHF, I shall test the adapter, but how do I check that the "ground"
is sufficient, or how can I improve it please.
Thanks
Alan

= = = "Alan" wrote in message
= = = ...

Snip Cut

ALAN,

If you are having "Noise Problems" using an ACDC Adapter with
a 'portable' Shortwave Radio.

First "Test" your AC Power Outlets for proper wiring and Grounding.

Often an 'incorrectly wired' AC Outlet or 'poorly grounded' AC
Outlet can be the "Source" of many AC Noise related problems.

iane ~ RHF

.
Cheers RHF, I shall test the adapter, but how do I check that the "ground"
is sufficient, or how can I improve it please.
Thanks
Alan


ALAN,

In the USofA we can CHECK the AC Outlets for proper wiring with
an AC Outlet Tester.

A 'standard' Three-Light AC OutLet "Analyzer" is available from
any electric supply house. The Analyzer is small, simple, $6
device consists of three Neon Lamps /LEDs and the 'Standard' USofA
Three-Prong 15-Amp Plug all molded in to a signal compact unit.

When Analyser plugged into a three-receptacle outlet it can
determine several different OutLet Faults in an instant.

With the Analyzer, one can immediately tell if the AC OutLet is:
- has Power (is Energized),
- has Reversed Polarity,
- has a Disconnected Ground,
- or has a Disconnected Neutral.

RadioShack (USA) Catalog # 22-141
http://www.radioshack.com/
RadioShack (Canada) Catalog # 22-101
http://www.radioshack.ca/
AC-OUTLET-TESTER= http://tinyurl.com/yvleo

"Instant-Read" AC Outlet Circuit Tester
http://www.tripplite.com/products/static/ct120.cfm

"Test-Glo Circuit Tester" GFCI Outlet Tester by AW Sperry
http://www.inspectortools.com/gfciouttesbu.html

Alan - I would think that such a device would be available in the
UK for Testing your 'standard type' of 220V AC Power Outlets ?
It should be available from any electric supply house in the UK.


iane ~ RHF

..