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If Ofcom wants to (or must) regulate "transmissions" below 9kHz they must have a lower limit of whant they consider radiation. Otherwise one wouild need a NoV to connect an audio amplifier to a loudspeaker
via a cable. Unless the the matching is perfect the cable will radiate some nannowatts or picowatts.
With amateur means (antenna's , power) we won't radiate much more than a few milliwatts.
73, Rik ON7YD - OR7T
Yes, unbelievable isn't it!
Been going gon for abt 4 weeks now.
On 26 February 2010 13:46, Graham <[email protected]> wrote:
Warren ,
If you think this is bad, you should take a look at the 'ROS' discussion's in the yahoo digital data group .. SS paranoia has taken hold !
G ..
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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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