[Elecraft] [K2] No RTTY Output

[Ken Alexander]

Thanks, Don.

HHmmm...now I wish I could have built my K2.  I'd have
a better idea of what you're talking about.  

This sounds like a project for Saturday afternoon.  I
read through the SSB adapter manual this afternoon, so
it's not as intimidating sounding as I first thought. 
Nevertheless, I'll make sure my fridge is full of beer
before I start on this!

73 - Ken


--- Don Wilhelm <w3fpr at embarqmail.com> wrote:

> Ken,
> 
> First, investigate the filter settings for RTTY with
> Spectrogram.  Be 
> certain the FL1 positions are correct (use the OP1
> filter and set the 
> BFOs similar to those used for SSB FL1).  You may
> set the RTTY FL2, FL3, 
> FL4 filters any way you wish, but FL1 must be set to
> OP1 and the BFOs 
> correct for that filter.  The LSB settings (RTTY)
> will have the BFO 
> positioned below the filter center frequency
> (typically the BFO 
> frequency will be 4913.xx) and the USB BFO (RTTY-r)
> will be positioned 
> above the crystal filter center (typical 4916.xx). 
> The .xx part of the 
> frequency will vary depending on the exact filter
> center frequency.
> 
> Secondly, revisit the carrier balance adjustment on
> the KSB2 board - you 
> can do that is SSB mode, but check using both LSB
> and USB - you may have 
> to compromise a bit between the two.
> 
> After doing the above, check the K2 on RTTY again -
> if you have audio 
> frequency tones going into the mic connector, it
> should work just the 
> same as for SSB - and on both sidebands.
> 
> 73,
> Don W3FPR
> 
> Ken Alexander wrote:
> > Hi Folks,
> >
> > I reported this problem back in the spring but
> didn't
> > have time to act on it.  Forgive me as I re-state
> the
> > problem I'm having.
> >
> > I have a K2 equipped with Don Wilhelm's constant
> audio
> > volume mod for digital operation (hope I described
> it
> > correctly, Don).  I also use a Tigertronics SL-1+
> > interface between my K2 and my notebook.
> >
> > In LSB mode I'm able to transmit RTTY and PSK-31
> > without any problems.  When I change the K2 to
> RTTY
> > mode I get no transmitter output (receive works
> fine).
> >  The PTT indicator on the SL-1+ lights and the K2
> > receiver mutes, but there's no RF output indicated
> on
> > the K2's meter or an external power meter.
> >
> > Cables and connections are fine, and as I
> mentioned,
> > simply switching to LSB gets me back on the air.
> >
> > I don't get on the air as frequently as I'd like,
> and
> > at times sitting down with the K2 and using it is
> like
> > starting over from scratch.  So, there's a good
> > possibility that something's not set correctly. 
> > However, so far I haven't found a setting that
> would
> > disable RTTY output like that.
> >
> > Can anyone help?
> >
> > Thanks and 73,
> >
> > Ken Alexander
> > _______________________________________________
> > Elecraft mailing list
> > Post to: Elecraft at mailman.qth.net
> > You must be a subscriber to post to the list.
> > Subscriber Info (Addr. Change, sub, unsub etc.):
> >  http://mailman.qth.net/mailman/listinfo/elecraft 
>   
> >
> > Help: http://mailman.qth.net/subscribers.htm
> > Elecraft web page: http://www.elecraft.com
> >
> >
> >   
>