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VLF dreamers
At the distance predicted for communications all
that is required is to just SHOUT at each other or perhaps a WHISPER would do if
you have symetrical EARS.
or even FLAG waving from high ground
!!
Electrical/Mechanical aids are only necessary above
say 20 KCS
de Mal/G3KEV
----- Original Message -----
Sent: Saturday, February 27, 2010 1:28
AM
Subject: Re: LF: Fwd: Special Permits for
Amateur Radio Operation below 9kHz?
Hi Pete,
Yes I guess I engaged in a bit of
hyperbole when I suggested that 9kHz won't cross the garden wall, but not by
much.
If you reckon that the world record is 10km for an amateur and that was
to receive a very faint ARGO trace then for a signal to be audible it must be
considerably closer.
You comment on politics reminds of the
old joke:
Q. Do you know the difference between capitalism and
communism?
A. In capitalism its dog eat dog; in communism its the other way
'round !
--
73 Warren K2ORS
WD2XGJ
WD2XSH/23
WE2XEB/2
WE2XGR/1
On Fri, Feb 26, 2010 at 3:46 PM, M0FMT <[email protected]> wrote:
Hi Warren
Well I can tell you right now that the garden wall is not the
limit by any means unless you live on John Wayne's Ranch.
Your
New President is trying to create jobs over there? He wants to
take a leaf out of our book we've been doing it for years...
joking aside....... I am not expecting DX but to have a
communication path that covers the local LF Amateur community on
VLF would be rather Cool I think. From there it may be a long road
that I for one may not travel but at the moment there is
enough enthusiasm locally to try out a few ideas many have come
from this debate on the LF reflector. The near field signal is
quite readable at about 1/2 km from a very low power TX using a
whip on RX during a quick wiz up the road in the car. Must
key this thing my ears are ringing with this continuous beat note
running all the time.
73 es GL petefmt
-------------------------------------------------- From:
"Warren Ziegler" < [email protected]> Sent:
Thursday, February 25, 2010 9:31 PM To: < [email protected]> Subject: Re:
LF: Fwd: Special Permits for Amateur Radio Operation below
9kHz?
Asking
Ofcom for a license or Nov to generate a signal that will
not
extend past your own garden seems like a lot of trouble
for
nothing....
--
73 Warren K2ORS
WD2XGJ
WD2XSH/23
WE2XEB/2
WE2XGR/1
On
Thu, Feb 25, 2010 at 3:28 PM, Jacek Lipkowski <[email protected]>
wrote:
On
Thu, 25 Feb 2010, Roger Lapthorn wrote:
People
may be interested in the reply from Rod Wilkinson at OFCOM
received
today. I asked him what OFCOM's view would
be.
[...]
They
state that ITU Radio Regs indicate that there is no
allocation for
frequencies below 9 kHz. However in the
UK, a licence would be required as
there is no lower
frequency limit for wireless telegraphy under the WT
Act
2006. [...]
there is already a very
big commercial user of the elf and vlf spectrum,
they
inject very big power into ground dipoles. emissions from one
continent
can be heard on another. and they do this without
any license from the radio
authorities. the only regulation
they need regards maximum field strengths
(and this is
usually the realm of some environmental protection
authority
and not the radio authority). the operating
frequency varies, but is usually
50Hz, 60Hz, 16.6Hz etc
:)
sometimes when dealing with the goverment, the best
practice is not to ask
at all :) even if they agree with
you there will always be a "but you will
need a license for
that" clause.
if you have to ask, ask them if it is
their duty to regulate potential
electromagnetic wave
transmission from instalations operating on 50Hz (or
any
other frequency in the 0-9kHz region, that is not ITU
regulated). you
would probably get an entirely different
answer :)
VY 73
Jacek / SQ5BPF
ps. the
answer that you got from OFCOM is actually very
nice
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