[Elecraft] P3 SVGA RTTY decode question

Hisashi T Fujinaka htodd at twofifty.com
Tue Aug 27 13:44:15 EDT 2013


Sorry, I guess my frustration is with the limited documentation on the
P3 SVGA. Twice I thought it was defective but it wasn't.

So far I've found that the SVGA bias needs to be turned way down from
the default of 9.9 to 1.2-1.5, and that I'm losing simple serial data
from the K3 to the P3 SVGA on receive. I think this is a serial line
problem and Gary from Elecraft suggests turning down the rate from
38400.

Also, the USB keyboard I have (a Cooler Master I just got) doesn't
appear to work and I'm sure it's another problem on my side. Everything
else has been.

On Tue, 27 Aug 2013, Richard Fjeld wrote:

> Paul, and others,
> I think Hisashi is describing using RTTY what I have been talking about using CW with a keyboard when I said that some
> characters (not elements of the characters) are being lost during transmission.  They show on the monitor, but not on the P3 and
> are not being sent.
> 
> At this point, I'm wondering if Hisashi is seeing this while transmitting? or does he see it during receive?  If during receive,
> that would be a new problem.
> 
> Dick, n0ce
> 
> 
> > Date: Tue, 27 Aug 2013 08:46:47 -0700
> > From: htodd at twofifty.com
> > To: k2mk at comcast.net
> > CC: elecraft at mailman.qth.net
> > Subject: Re: [Elecraft] P3 SVGA RTTY decode question
> >
> > Once again, I wonder if I'm being clear. THE TEXT ON THE P3 SVGA IS NOT
> > THE SAME AS ON THE K3. I'm not sure what the issue is.
> >
> > On Tue, 27 Aug 2013, Mike K2MK wrote:
> >
> > > Hi Hisashi,
> > >
> > > The P3/SVGA board is acting as a terminal. It does not do any decoding. It
> > > just displays the decoding done by the K3. If you're missing characters you
> > > may want to adjust the threshold on the K3. See the decode tips in the K3
> > > manual on page 33.
> > >
> > > 73,
> > > Mike K2MK
> > >
> > >
> > > Hisashi T Fujinaka wrote
> > >> I was copying RTTY on my P3 SVGA and I found that it was dropping a lot
> > >> of characters. I finally figured out how to decode directly on the K3
> > >> and it wasn't dropping characters at all.
> > >>
> > >> Is there something I have set up incorrectly?
> > >>
> > >> Thanks.
> > >> Hisashi T Fujinaka
> > >
> > >
> > >
> > >
> > >
> > > --
> > 
> 
>

-- 
Hisashi T Fujinaka - htodd at twofifty.com
BSEE(6/86) + BSChem(3/95) + BAEnglish(8/95) + MSCS(8/03) + $2.50 = latte


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