[Dxspider-support] PC28 loop?

[Rene Olsen]

Hi.

I actualy just searched in some of my debug files for the last 10 days.

Seems to me like there is PC28 loops in pretty much every one of them, and also several 
times every day. Wonder why noone have noticed this before. It actually generates quite a bit 
of trafic.

The same ones also seems to pop up over several days. They start and end, and then later 
the same day or even the next day, the same ones go for another round.

What they all seem to have in common is US7IQZ-1.

They all start with:

PC28^US7IQZ-1^

Is this a malformed PC28 frame, that spider for some reason don't know what to do about?

Vy 73 de Rene / OZ1LQH

On 15 Apr 2010 at 11:46, Dirk Koopman G1TLH wrote:

> Rene Olsen wrote:
> > Hi.
> > 
> > I did some monitoring with watchdbg today, and noticed a rather disturbing thing.
> > 
> > Over a period of several minutes, there was a loop with this PC28 frame:
> > 
> > PC28^US7IQZ-1^VK3AVE-4^ALL^GM4XQJ^16-Mar-2010^1600Z^0^Pirated callsign!^ ^5^0^ ^VE7CC-1^~
> > 
> > The first line I see of this in my debug log is this one:
> > 
> > 1271310410^<- I SK3W-6 PC28^US7IQZ-1^VK3AVE-4^ALL^GM4XQJ^16-Mar-2010^1600Z^0^Pirated callsign!^ ^5^0^ ^VE7CC-1^~
> > 
> > The last line I see of this in my debug log is this one:
> > 
> > 1271310577^-> D DB0SUE-7 PC28^US7IQZ-1^VK3AVE-4^ALL^GM4XQJ^16-Mar-2010^1600Z^0^Pirated callsign!^ ^5^0^ ^VE7CC-1^~
> > 
> > Between those two I see many hundreds, maybe even a thousand, identical lines being 
> > received/sent.
> > 
> > What is this PC28 frame and why does is loop?
> 
> It is a message header (as in bulletins and private messages). It should 
> not loop. It is sent point to point. It could be that we have found 
> another weakness in the protocol. If that is so, I am bit surprised it 
> has taken this long to appear.
> 
> > 
> > Anyone else see this loop as well?
> >
> 
> I was getting it between 01h33 and 01h36 this morning but then it stopped.
> 
> Dirk
> 
>