It seems to me that 136khz is almost in the realm of the supersonic and
therefore the headaches could have been a matter of hearing , especially at
the power level mr. aspinall was using!! when I was a young man(looong ago)
and television was new, I could not stay in the same room with a tv set..
the horizontal oscillator signal radiated from the early tv sets gave me a
headache you wouldn't believe..
at 15.750 khz, that is in the hi range of audible signals and getting close
to supersonic. today I don't have that problem mostly because my hearing is
not too good anymore.(could there be a connection here??)
carl / kz5ca
----- Original Message -----
From: "Howard Aspinall" <howard.adaire@connectfree.co.uk>
To: <amps@contesting.com>
Sent: Tuesday, November 06, 2001 8:24 AM
Subject: [AMPS] re: another myth on EMF
>
> Barry Kirkwood says he is reasonably persuaded the biological effect on
> adult humans from being subjected to strong fields in the VLF-HF region ae
> minimal.
>
> When we here in the UK were granted an allocation in the 136 Khz region, I
> set about building an obsolete technology transmitter with valves (tubes)
> Max pwr was about 60 watts of RF. I used computer modelling for the
various
> tank constants, but neverthess once constructed, these required adjustment
> for maximum performance. This entailed circuit adjustments/component
> substitution whilst the system was energised and producing RF.
>
> One several instances whilst making adjustments over periods of say one
> hour, I got quite definite headaches. This was not one isolated instance
nor
> was it imagination and I an unaware of any other possible or likely cause.
> Put it this way, after that experience, no way would I spend more than a
> very short time in the vicinity of such an RF source, and would avoid
doing
> so at all where possible. I cannot speculate on the nature of the
biological
> implications, but to me the headaches had causal connection with the large
> RF fields in the immediate vicinity.
>
> As a matter of interest, for some years I worked as lawyer for a power
> company which was being sued by people claiming adverse medical
conditions
> arising from alleged power line/power equipment radiation. The case never
> went to trial due to financing problems encountered by the claimants, but
I
> don't think this kind of claim will just go away in future.
>
> Regards
>
> Howard Aspinall G3RXH
>
>
>
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>
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