[Elecraft] K# and data modes

Thu Oct 1 18:41:22 EDT 2009

> 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?

OK, you appear to have an older RASCAL instead of the current ones 
with all connections on the DIN-5.  I'm working from data on the 
BuxComm web site. 

If the audio cables are captive there's not much you can do. 

The ACC connector I'm referring to is the DB15HD ACC connector 
on the K3.  The DIN-5 is the RASCAL Connector. 

You need to connect the audio connections to the Line In and 
Line Out jacks on the K3.  

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

Pins 2 and 4 on the DIN-5 on the RASCAL (at least the current 
ones).  Since the K3 has transformer isolation you can simply 
connect standard stereo 3.5mm audio cables from the K3 Line 
Out jack to the Line In jack on the computer and the Lin Out 
jack on the computer to the Line In jack on the K3. 

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

Yes. 

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 6:13 PM
> To: elecraft at mailman.qth.net
> Subject: Re: [Elecraft] K# and data modes
> 
> 
> 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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> >
> >
> >   
> 
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