Re: [linrad] noise blanking comparisons

[W6WO <ron-skelton@xxxxxxxxxxxxxxx]

Greetings all. I am interested in weak signal HF CW and have been 
drawn to investigate Linrad because of Lief's reputation and my 
desire to try to be just behind the bleeding edge. I haven't got 
Linrad running yet so I was especially interested in the WAVE files 
W3SZ provided. I listened to them carefully.

I would like to hear any preliminary conclusions about the 
performance of the K2, Linrad and SDR -1000 on both CW and SSB

With regard to noise reduction am I right in my understanding that 
the noise cancellation/blanking in Linrad and SDR-1000 is focused on 
impulse noise and not on reduction of background noise associated 
with lowband HF propagation ?

Has anyone in this community investigated de-noising functions 
provided by Wavelet techniques ?





> This morning I was playing with the SDR-1000 on 20 meters
> when the band was wiped out by pulse noise.
>
> I quickly assembled the Linrad receiver [it had been taken
> apart to go to W2SZ/1 for the June ARRL VHF Contest] and put
> it on the same frequency.
>
> The experiment is far from perfect, but I have some zipped
> wave files from both Linrad and the SDR-1000 copying an
> American ham who is vacationing in VK land, in QSO with a
> Stateside ham.
>
> This is all apropos ALex Crow's email of a few days ago, and
> those who were wondering about how Linrad and its
> noiseblanker would do on HF SSB. 
> The files are of Linrad and then the SDR-1000 using the same
> antenna, etc on the same station, with Linrad files recorded
> before and after the SDR-1000 files.
>
> Hope this is of interest to someone.
>
> The text on the page explains things in more detail.
>
> http://www.qsl.net/w3sz/linradnoise.html is the URL.
>
>
>
>
> 73,
> Roger Rehr
> W3SZ
> FN20ah
> http://www.qsl.net/w3sz
--
73
Ron
W6WO


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