Morski
2010-03-27 16:27:01 UTC
This post is from the UKQRM group, I have been keeping a close eye on these
devices for about a year now, so now it's not just HF, it's pretty much
everything!
The full original post can be found on the UKQRM Yahoogroup......
"Some weeks ago I purchased a Belkin Gigabit Powerline HD Starter Kit model
number F5D4076uk with the intention of testing, then taking it back and
complaining.
Due to illness, there was a delay in making the field test and due to a
failure
on my part to look at the Standards, I proceeded on the assumption that
since
the devices were HomePlugAV compatible, they were therefore were still HF
PLT,
despite being gigabit.
I tested them and no-surprise, HF was wiped out in the manner to which we've
all
become accustomed. A quick 'twiddle' up to about 45 MHz on a VR-500 with a
BNC
stub antenna some metres distant indicated no incursion into VHF - so I
thought,
so I stopped the test and packed them away.
Richard's post today, prompted me to ask him to phone me and quickly into
that
conversation it became apparent that this device was of the ilk I've been
warning everyone about like a prophet of doom - the dreaded 300 MHz PLT. No
sooner was the conversation finished, I set about reinstalling the adapters
and
looking properly at them this time.
What I found should bother EVERYONE. I mean it.
Close-in (inside the same house the PLT's were deployed in, which is ferrite
city I might add) the PLT's effectively consumed:-
0.1 MHz to 370 MHz
Yes that's right, the whole lot. On a VR-500 with 30cm telescopic antenna
inside the house, there were virtually NO GAPS. Not just HF, but 6m, 4m, 2m,
the
air band, the utility band, the pager band, the DAB band and anything else
in
between.
But VHF radio broadcasting was notched, so that's alright.
A little further away, some metres outside the house, the effect was a
little
attenuated (remember every cable in my house has clip-on ferrites -
obsessively)
and :-
roughly 2.5 MHz - 29 MHz was filled, and
roughly 73 MHz - 319 MHz the same, with a few attenuations.
I bribed my wife to go for a walk (I'm disabled remember) and on a random
sprog,
(290 MHz chosen) the signal was still in the VR-500 at 100 metres distant
down
the road, that's with the 30cm telescopic.
Just because the RSGB has dispatched a nice letter to Ofcom DOES NOT MEAN WE
CAN
RELAX group. Sorry for shouting, but it's the truth. Now more than ever we
need
to be vigilant since it's no longer just HF being consumed by this
monstrosity -
and it is no longer a threat on the horizon - it is here and it is now. . ."
These are the ones in question:
http://www.argos.co.uk/static/Product/p ... BELKIN.htm
http://www.amazon.co.uk/Belkin-Powerlin ... B00267Q3SI
http://www.maplin.co.uk/Module.aspx?ModuleNo=264968
It's about time we all started to actually start making a lot of noise about
this, everyone seems quite happy just to carry on thinking it will never
affect them, well it seems it will, it's going to get worse and worse!
devices for about a year now, so now it's not just HF, it's pretty much
everything!
The full original post can be found on the UKQRM Yahoogroup......
"Some weeks ago I purchased a Belkin Gigabit Powerline HD Starter Kit model
number F5D4076uk with the intention of testing, then taking it back and
complaining.
Due to illness, there was a delay in making the field test and due to a
failure
on my part to look at the Standards, I proceeded on the assumption that
since
the devices were HomePlugAV compatible, they were therefore were still HF
PLT,
despite being gigabit.
I tested them and no-surprise, HF was wiped out in the manner to which we've
all
become accustomed. A quick 'twiddle' up to about 45 MHz on a VR-500 with a
BNC
stub antenna some metres distant indicated no incursion into VHF - so I
thought,
so I stopped the test and packed them away.
Richard's post today, prompted me to ask him to phone me and quickly into
that
conversation it became apparent that this device was of the ilk I've been
warning everyone about like a prophet of doom - the dreaded 300 MHz PLT. No
sooner was the conversation finished, I set about reinstalling the adapters
and
looking properly at them this time.
What I found should bother EVERYONE. I mean it.
Close-in (inside the same house the PLT's were deployed in, which is ferrite
city I might add) the PLT's effectively consumed:-
0.1 MHz to 370 MHz
Yes that's right, the whole lot. On a VR-500 with 30cm telescopic antenna
inside the house, there were virtually NO GAPS. Not just HF, but 6m, 4m, 2m,
the
air band, the utility band, the pager band, the DAB band and anything else
in
between.
But VHF radio broadcasting was notched, so that's alright.
A little further away, some metres outside the house, the effect was a
little
attenuated (remember every cable in my house has clip-on ferrites -
obsessively)
and :-
roughly 2.5 MHz - 29 MHz was filled, and
roughly 73 MHz - 319 MHz the same, with a few attenuations.
I bribed my wife to go for a walk (I'm disabled remember) and on a random
sprog,
(290 MHz chosen) the signal was still in the VR-500 at 100 metres distant
down
the road, that's with the 30cm telescopic.
Just because the RSGB has dispatched a nice letter to Ofcom DOES NOT MEAN WE
CAN
RELAX group. Sorry for shouting, but it's the truth. Now more than ever we
need
to be vigilant since it's no longer just HF being consumed by this
monstrosity -
and it is no longer a threat on the horizon - it is here and it is now. . ."
These are the ones in question:
http://www.argos.co.uk/static/Product/p ... BELKIN.htm
http://www.amazon.co.uk/Belkin-Powerlin ... B00267Q3SI
http://www.maplin.co.uk/Module.aspx?ModuleNo=264968
It's about time we all started to actually start making a lot of noise about
this, everyone seems quite happy just to carry on thinking it will never
affect them, well it seems it will, it's going to get worse and worse!