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| To: | [email protected] |
|---|---|
| Subject: | Re: LF: LF and JT65 |
| From: | Marek SQ5BPM <[email protected]> |
| Date: | Thu, 14 Apr 2005 16:25:32 +0200 |
| In-reply-to: | <[email protected]> |
| References: | <[email protected]> |
| Reply-to: | [email protected] |
| Sender: | [email protected] |
| User-agent: | Mozilla Thunderbird 1.0.2 (Windows/20050317) |
[email protected] wrote: Forwarded on behalf of Andy Talbot G4JNTRe JT65 and LF[...] Some years ago, Alberto introduced us to Jason, but even that is anincoherent mode and doesn't make the most of the LF path. But if the errorcorrection capabilities of JT65, were used with a reduced synchronisationvector allowed for by better frequency accuracy, and with the tone / symbol Some time ago I sent to the group information about Olivia mode, which already uses an interesting error correction scheme. This mode could be possibly re-worked for much lower bandwidth and throughput, some extra possibilities of coherent reception could be added as well. Subsequent tones do not need to overlap as they do in original Olivia, if it's to be used with non-linear power amplifiers. One could also start with Jason and add the error correction used in Olivia... 73! Marek SQ5BPM |
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