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References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*LF\:\s+VLF\-Noise\s*$/: 4 ]

Total 4 documents matching your query.

1. Re: LF: VLF-Noise (score: 1)
Author: "mal hamilton" <[email protected]>
Date: Thu, 3 Jun 2010 18:56:23 +0100
The RX sensitivity at 4 kcs is a lot less than 9 kcs therefore it might appear a better choice but one would need to be convinced and more research is needed. I prefer to go the other way up to say 1
/rsgb_lf_group-archives/html/rsgb_lf_group/2010-06/msg00006.html (11,728 bytes)

2. LF: VLF-Noise (score: 1)
Author: "Clemens Paul" <[email protected]>
Date: Thu, 3 Jun 2010 17:05:43 +0200
Looking on the VLF spectrum I notice that noise at 4kHz or lower is abt 30dB less than around 10kHz or higher (see screenshot). So wouldn't it make sense to trx around 4kHz? Wouldn't the 30dB noise a
/rsgb_lf_group-archives/html/rsgb_lf_group/2010-06/msg00060.html (11,050 bytes)

3. Re: LF: VLF-Noise (score: 1)
Author: "Roelof Bakker" <[email protected]>
Date: Thu, 03 Jun 2010 17:46:30 +0100
Hello Clemens, Your observation is correct. This has also been mentioned by Paul Nicholson, who has a first class ELF-VLF monitoring station. However this frequency will ask for much larger loading c
/rsgb_lf_group-archives/html/rsgb_lf_group/2010-06/msg00603.html (10,691 bytes)

4. Re: LF: VLF-Noise (score: 1)
Author: "Clemens Paul" <[email protected]>
Date: Thu, 3 Jun 2010 18:36:56 +0200
Hi Daniele and Rik, thanks for your replies. The low noise below 4kHz is even more impressive to watch live on Perseus when static crashes periodically shoot the noise baseline quickly upwards. The b
/rsgb_lf_group-archives/html/rsgb_lf_group/2010-06/msg00692.html (12,109 bytes)


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