[UK-CONTEST] 70MHz Noise level

[Ken Eastty]

Tony,

I do wonder whether the cities are really much noisier than semi-rural 
locations today, at least all of the services are underground unlike 
here where there are o/h phone lines, 11kV lines on wooden poles not far 
away, 500kV grid lines a mile or so away, electric fences in nearby 
fields ticking away. and all manner of noises from local houses. Where 
can I find a desert island!
I vaguely remember seeing the results of an airborne survey years ago 
which measured RF noise levels across the UK,
it would be interesting to see these results which must be tucked away 
on a dusty shelf in a university (Cranfield?) somewhere.
What would be even more interesting would be to see the results of a 
similar airborne RF survey today.

73...

Ken

G3LVP

On 06/12/2011 17:02, Tony Collett wrote:
> I remember when I moved from Slough to here (just west of Cambridge) 
> in the mid 80's making the comment how nice and quite the bands are......
> I wish - had an S7 noise level on 4M when I fired up the ancient gear 
> for the Trophy. Not much better on 2M either. Even get noise on 23cm!
> 73
> Tony G4NBS
>
> --- On *Sun, 4/12/11, Ken Eastty /<ken.g3lvp at btinternet.com>/* wrote:
>
>
>     From: Ken Eastty <ken.g3lvp at btinternet.com>
>     Subject: Re: [UK-CONTEST] 70MHz Noise level
>     To: uk-contest at contesting.com
>     Date: Sunday, 4 December, 2011, 21:59
>
>     >
>     > I was using my (converted) TS700 for the first time, and I was
>     concerned
>     > that when I plugged the antenna in up at Sutton Bank, the noise
>     floor
>     > didn't rise. Back at home when the antenna is plugged in, there
>     is a definite
>     > increase in noise level. I must live in a noisy environment!
>     >
>     >
>     > 73,
>     >
>     > Chris G4FZN
>     >
>     >
>
>     "A definite rise in noise level" is that all? With my 4m Xvter I/P
>     terminated I see S1, with the beam connected the noise level averages
>     between
>     S2 (North W) & S5 (S & NE), this is general noise without any
>     apparent
>     spectral peaks, on top of that there are various carriers across the
>     band (one on 70.2!).
>       I wish that I'd taken some noise level readings before every house
>     became full of PC's & other electronic gadgets,  nearby there are now
>     several hundred houses on what were just orchards when we first moved
>     here. If I struggle  to copy some stations you now know why!
>
>     73...
>
>     Ken
>
>     G3LVP
>
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