Hello Chris,
Wednesday, December 14, 2016
Sorry, not sure what happened with the link, Marcus spotted the error
and it should be:
http://www.chriswilson.tv/HDSDR.zip
Best regards,
Chris 2E0ILY mailto:[email protected]
My part time LF grabber is at http://www.chriswilson.tv/grabber.html
> 14 December 2016
> Thanks to all who have helped both here and by e-mail. Turning off the
> mains into the house and workshop and running my laptop on internal
> battery and the IDC receiver on a 12V accumulator saw a very slight
> degradation in the noise, but nothing of significance. It has been
> mentioned this noise hump may be caused by a mixing of high level
> signals and the way the front end of the IDC receiver is constructed.
> i have had the idea of using HDSDR to record this noise in RF and AF
> format. If someone using HDSDR has the time and inclination to
> download the .wav file and play it on their PC maybe their experience
> could suggest what it may be? HDSDR allows one to look at it in SSB or
> AF or even FM modes. I recorded about a minute of it. the pulsing
> noise at about 1.5 second or so intervals is the electric cattle
> fence, and yes, I turned that off as a fisrt step in ID'ing it, plus
> it goes off if the mains to the house is turned off. It made no
> difference to the noise hump :(
> The file is at:
http://www.chriswilson.tv/HDSDR.zip
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