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Date: Thu, 21 Aug 2008 16:51:10 -0400
From: John Andrews <w1tag@w1tag.com>
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Subject: Re: LF: Keyboard Modes for 600 Meters
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Graham,

Again, with the dangers of replying from work...<g>

You should be able to run MFSK 8 or 16 through your grinder...those are 
single-tone-at-a-time systems, and have very nice FEC for this sort of work.

John A.

Graham wrote:
> Ok John,
> 
> I spent a while last year looking for modes that would go through these 
> 'Meat grinder' transmission systems , only found , RTTY , Amtor arq/fec, 
> Pactor arq/fec and Hf  Packet , 'hell' of course , but thats in a gray 
> zone .... I think the original Jason system will but with the advent of 
> 'Bill's joined up writing, windows 'xp' it looks to  of fallen over ..My 
> version crashes on rx/tx change over . I think it made sequential 
> frequency change steps, which where measured by rx software and thus 
> determined the character .... which on 500 would be a good system, with 
> no lock up time and presumably would print correctly to  the point of 
> loosing the last set of tones  ?...
> 
> Graham ..
> 
> Ps  (Alberto, any chance of a recompiled 'xp' version ? )
> 
> 
> 
> --------------------------------------------------
> From: "John Andrews" <w1tag@w1tag.com>
> Sent: Thursday, August 21, 2008 12:54 PM
> To: <rsgb_lf_group@blacksheep.org>
> Subject: Re: LF: Keyboard Modes for 600 Meters
> 
>>
>> Graham,
>>
>>> I think you will find , olivia  runs more than one tone at any one 
>>> time and produces a 'two tone test' envelope , simple check, view the 
>>> sound card o/p on a scope ?
>>
>> (Belated reply...) Yes, you are correct about Olivia -- easily 
>> confirmed with a scope in a short on-air test. This once again teaches 
>> me not to make quick observations while at work!
>>
>> John W1TAG
>>
>>
>>
>> No virus found in this incoming message.
>> Checked by AVG - http://www.avg.com Version: 8.0.138 / Virus Database: 
>> 270.6.6/1623 - Release Date: 8/20/2008 08:12
>>
>>
>>
> 
> 
> 
>