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Total 4 documents matching your query.

1. LF: RE: Article on VLF (score: 1): Author: "hvanesce" <[email protected]>; Date: Tue, 3 Dec 2013 02:16:08 -0700; It might be informative to consider exploitation and mitigation of dispersion in approaches to compression for VLF links. Jim AA5BW I have received the following request from G4AEE of the Cave Radio; /rsgb_lf_group-archives/html/rsgb_lf_group/2013-12/msg00174.html (11,528 bytes)
2. Re: LF: RE: Article on VLF (score: 1): Author: John Rabson <[email protected]>; Date: Tue, 3 Dec 2013 14:29:13 +0100; I think I understand the term dispersion in the optical context and how there could be a similar mechanism at VLF. My main reasons for posting are: 1) an interest is reduced-bandwidth speech systems; /rsgb_lf_group-archives/html/rsgb_lf_group/2013-12/msg00647.html (11,778 bytes)
3. Re: LF: RE: Article on VLF (score: 1): Author: wolf_dl4yhf <[email protected]>; Date: Tue, 03 Dec 2013 18:47:18 +0100; Hi John, The problem with most (but not all) digital voice systems is the RX receives 'all or nothing'. If the SNR drops below a certain threshold, most of them will not give any copy at all.. much i; /rsgb_lf_group-archives/html/rsgb_lf_group/2013-12/msg00648.html (11,836 bytes)
4. Re: LF: RE: Article on VLF (score: 1): Author: John Rabson <[email protected]>; Date: Tue, 3 Dec 2013 19:29:01 +0100; Hi Wolf, I agree about the threshold effect. The problem we encounter in cave radio is that ordinary SSB on 87 kHz USB (the commonly used frequency in Europe) is not always robust in the presence of; /rsgb_lf_group-archives/html/rsgb_lf_group/2013-12/msg00649.html (14,532 bytes)

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