Date: Mon, 5 Dec 2016 17:28:47 +0000
From: Chris Wilson <chris@chriswilson.tv>
Organization: Gatesgarth Developments
Message-ID: <127187499.20161205172847@chriswilson.tv>
To: PA7EY <rsgb_lf_group@blacksheep.org>
In-Reply-To: <CAJW4BFkW+YPjDrFooJLC2cPOZ1FDq68S4EL41Pi73-POMHngcg@mail.gmail.com>
References: <394829979.20161126101755@chriswilson.tv> <CAJW4BFkW+YPjDrFooJLC2cPOZ1FDq68S4EL41Pi73-POMHngcg@mail.gmail.com>
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Subject: Re[2]: LF: RFI noise at 144 kHz exactly
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Status: O

Hello PA7EY,

Thanks  to  all  who  have replied, due to work and 2 sick dogs I have
been  over  stretched  and  apologize  for  the late reply. Hopefully
tomorrow will be a bit calmer and I can key a more worthy note of what
I  have  found  and  how I seem to have partially addressed it. I just
didn't  want  people  thinking I was pig ignorant and ignoring all the
very helpful info here and on the other LF forum :)

I am RX'ing on my resonant TX antenna into my TS-590 and things seem a
lot  better  and  I  seem  to  be  hearing  in a more sensible manner,
possibly  because it's a narrow bandwidth antenna? Anyway, more later,
thanks again folks!


Best regards,
 Chris  2E0ILY                          mailto:chris@chriswilson.tv

 My part time LF grabber is at http://www.chriswilson.tv/grabber.html


> Chris, LF


> Screenshot of area around 144 KHz as received in Amsterdam.


> Kind regards,


> Ulrich, PA7EY

> 2016-11-26 11:17 GMT+01:00 Chris Wilson <chris@chriswilson.tv>:

> 26 November 2016
>  
>  
>  I have been monitoring my noise on my receivers and the big issue is a
>  constant, day and night, high level noise centred exactly on 144 kHz.
>  Is  this  a frequency that is familiar to anyone? Googling it has only
>  brought  up  comments  of  some 20kHz solar inverters talking to their
>  control  panels  down  the  mains wiring at 144 kHz, with some chatter
>  about  inverters  going  noisy  and  blanking  out their own talk back
>  frequency.
>  
>  My  next  door  but one neighbour has solar panels on his stable roof,
>  but  I  don't THINK they have an accumulator bank, they just feed back
>  into the national grid. we don't really get on too well so I am loathe
>  to approach them unless I can be sure the noise is from there.
>  
>  There's also a huge, multi acre solar farm opened about 5 miles away.
>  I would imagine some old geezer with noise near his beloved LF Ham
>  band frequency would have little impact on its operation, so i hope
>  it's not tat. Any ideas on what uses 144 kHz, and how to locate the
>  source?
>  
>  Here's  a  screen  shot  of  it as it is at the moment, but it doesn't
>  change,  day  or  night,  and its amplitiude stays pretty constant, no
>  turning  on  and off I have ever seen. My RX is on my TX aerial at the
>  moment.
>  
>  http://www.chriswilson.tv/noise.jpg
>  
>  Thanks
>  
>  
>  --
>  
>  
>  Best regards,
>   Chris  2E0ILY                           mailto:chris@chriswilson.tv
>  
>   My        part        time        LF        grabber       is      at
>   http://www.chriswilson.tv/grabber.html
>  
>  
>