[Elecraft] K# and data modes

[Mike]

Thanks Joe -

Just what the doc ordered!
I've got a dead Rascal that I can rob the audio lines from.
Questons in-line.


Joe Subich, W4TV wrote:
> Mike, 
>
> FSK output (pin 5) of the BuxComm to pin 1 of the ACC connector. 
> PTT output (pin 3) of the BuxComm to pin 4 of the ACC connector. 
> FSK/PTT common (pin 2) to pin 5 of the ACC connector. 
>
> Rx Audio - 3.5mm stereo cable to Line Out.  Connect pin 4 to tip 
>   and pin 2 to sleeve.  
The Rascal already has audio lines wired in, but since there doesn't 
seem to be audio in or out on the ACC connector, I need to add another set?

This is the audio from the rig to the computer? Should that be Line IN? 
Pins 4 & 2 on what?

The plug's nomenclature is tip, ring, then sleeve, right?

> For PSK/AFSK add another 3.5mm audio cable to Line Out.  Pin 1 
>   to tip and pin 2 to sleeve. 
>   
Audio from the sound card to the rig? Pins 1 & 2 on what?
> The male DB15HD connector and hoods for the ACC jack are available 
> at most Radio Shack stores in the US as were the 5 pin DIN plug 
> for the Rascal when I last checked.    
>
> Not very difficult.  For FSK set Digital mode to FSK D and go 
> to town.  Make sure "pitch" in data modes is set to the same 
> frequency as you use for "Mark" in your digital software 
> (e.g. MMTTY or MixW). 
>
> 73, 
>
>    ... Joe, W4TV 
>   
>
>
>   
>> -----Original Message-----
>> From: elecraft-bounces at mailman.qth.net
>> [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Mike
>> Sent: Thursday, October 01, 2009 2:36 PM
>> Cc: elecraft at mailman.qth.net
>> Subject: Re: [Elecraft] K# and data modes
>>
>>
>> Julian, G4ILO wrote:
>>     
>>> quote author="Mike-39">
>>> Has anyone used a Buxcomm Rascal interface with the K3? If so, what 
>>> cable does it use?
>>>
>>> What other interface is used for RTTY and PSK31? I want to do direct 
>>> keying, not audio, and I want to copy with the 'puter.
>>>
>>> Does the K3 come with the mating plug for the acc jack?
>>>
>>>
>>> There is no need to use a special interface with the K3. The audio
>>> in/out already has isolating transformers, so just the RS-232 cable 
>>> that you need for updating firmware plus a couple of 3.5mm stereo 
>>> double ended screened cables from your compouter shop are all you 
>>> need.
>>>
>>> Not quite sure what you mean by direct keying, especially in the
>>> context of PSK31. The K3 can do direct FSK RTTY, though I've never 
>>> used it and don't see what the advantages are, especially 
>>>       
>> if you'll be
>>     
>>> using sound card software to do the decoding. I have a hunch the K3
>>> does FSK by generating audio within the DSP anyway.
>>>
>>>   
>>>       
>> Hi Julian -
>>
>> Direct keying = FSK
>> Audio keying = ASFK
>>
>> See http://www.aa5au.com/gettingstarted/rtty_start_intro.htm for some
>> pro/con arguments re: RTTY. I've always used FSK, so it's my 
>> preference 
>> not to change. I also don't want to deal with the offset 
>> between SSB and 
>> FSK. Or does the K3 deal with that internally?
>>
>> I'm not too sure about the PSK31 scheme either.
>>
>> 73, Mike
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