[pskmail] Re: PSKmail jamming itself (30 meter fq)
- From: Per Crusefalk <per@xxxxxxxxxxxx>
- To: pskmail@xxxxxxxxxxxxx
- Date: Sun, 09 Sep 2007 19:35:48 +0200
Hi all,
Great, things seem to have worked out.
Roberto: thanks for understanding and moving, its much quieter now.
I am back up and I will start scanning agn.
73 de Per, sm0rwo
On sön, 2007-09-09 at 12:52 +0200, Roberto IS0GRB wrote:
> No problem Rein.
>
> Tnx.
>
> 73,
>
> Roberto IS0GRB
>
>
>
> On Sunday 9 September 2007 12:43, Rein Couperus wrote:
> > OK, tnx Roberto...
> >
> > Hope most of the problems are solved now. Would be nice if you could add
> > scanning in the future...
> >
> > 73,
> >
> > Rein PA0R
> >
> > > -----Ursprüngliche Nachricht-----
> > > Von: pskmail@xxxxxxxxxxxxx
> > > Gesendet: 09.09.07 12:33:09
> > > An: pskmail@xxxxxxxxxxxxx
> > > Betreff: [pskmail] Re: PSKmail jamming itself (30 meter fq)
> > >
> > >
> > >
> > > Hi Rein, at the moment i don't have possibilty to scan, because my pc is
> > > not connected directly with the TRX with RS-232.
> > > I prefer to switch directly to a single frequency 10148.75.
> > > Now i'm in 10.148.75.
> > >
> > > If there are problems write me.
> > >
> > > Thanks for the reply.
> > >
> > > Roberto
> > >
> > > On Sunday 9 September 2007 12:23, Rein Couperus wrote:
> > > > Maybe it is good when I try to explain the concept behind server
> > > > scanning...
> > > >
> > > > The idea is to have all stations on 1 frequency during maybe the first
> > > > 2 minutes of every 5-minute period to listen for APRS beacons, and
> > > > listen on another, or several other frequencies for the rest of the
> > > > period for traffic.
> > > >
> > > > These traffic frequencies should be chosen so that interference is
> > > > minimized. At the moment it looks like a 250 Hz grid is not feasable
> > > > because of the 500 Hz CW filters which are often used in the rigs.
> > > >
> > > > We have chosen 10148.250 to be the central APRS frequency for mobile
> > > > pskmail stations, and it would be nice if all servers would listen at
> > > > least during minute 0 or 0 + 1 on that frequency for beacons.
> > > >
> > > > The number of users is very low at the moment, so probably 1 minute is
> > > > ok for APRS beaconing and pinging.
> > > >
> > > > Maybe we can come to an agreement on the traffic frequencies, using a
> > > > 500 Hz grid.
> > > >
> > > > There is no more qrm on 10148.750 than on .500. 10148.00 is often used
> > > > by military stations with high power CW and RTTY. They seem to have an
> > > > Xtal for that qrg :)
> > > >
> > > > Between 10148.25 and 10149.00 is empty. Below 10148.000 is a german
> > > > pactor PMBO and also the ALE frequency.
> > > >
> > > > I would suggest email/web traffic frequencies on (1) 10148.750 and (2)
> > > > 10147.750, depending on qrm. Of course other bands are possible as
> > > > well.
> > > >
> > > > Example for 30m only:
> > > >
> > > > SM0RWO 10148.250 10147.750 10147.750 10148.750
> > > > 10148.750 IS0GRB-3 10148.250 10148.750 10148.750 10147.750
> > > > 10147.750 PI4TUE 10148.250 10148.250 10148.250
> > > > 10148.250 10148.250
> > > >
> > > > this way stations would not interfere. Of course multi-band scanning
> > > > will also fit into this scheme.
> > > >
> > > > What do you think?
> > > >
> > > > 73,
> > > >
> > > > Rein PA0R
> > > >
> > > > (and now get some more users....)
> > > >
> > > > > -----Ursprüngliche Nachricht-----
> > > > > Von: pskmail@xxxxxxxxxxxxx
> > > > > Gesendet: 09.09.07 11:55:42
> > > > > An: pskmail@xxxxxxxxxxxxx
> > > > > Betreff: [pskmail] Re: PSKmail jamming itself (30 meter fq)
> > > > >
> > > > >
> > > > >
> > > > > Hi all.
> > > > > I read all posts, and i'm was thinking what is the better thing.
> > > > > For me there are no problem to switch on 10.148.25, but having about
> > > > > 10 years of experience of packet and digital link, as mailbox, aprs,
> > > > > tcp/ip etc, i think that to guarantee the best performance to each
> > > > > users, that would want to receive and send email, the best choice is
> > > > > to switch to a frequence don't occupied from other server.
> > > > > If a user connect a server and remain few minutes connected to this
> > > > > server, sending and reading mail and other traffic, you can
> > > > > understand that to stay all in the same frequency is not the best
> > > > > choice, other users don't operate, also with other servers.
> > > > > At the moment there no many users, but in the future?
> > > > > As pactor, i think the best thing is a new frequency for each server.
> > > > > Also, i'm testing still the server, and my choice is be to avoid
> > > > > traffic from my tests to other servers/users.
> > > > > For me there are no problem to swith, 250Hz up (10.148.750), but i
> > > > > will test it if there are no interference, i don't have interference
> > > > > at the moment from anyone from 10.148.25.
> > > > > I set 10.148.50 because i see in the serverlist, SMORWO in 10.148,
> > > > > PI4TUE in 10.148.25, considering also the bandwidth of PSK125.
> > > > > We can advise in the site to activate a new server frequency with a
> > > > > space of 500Hz from other servers to avoid interference if some radio
> > > > > is not equidded with a serious filter and/or if possibile to move the
> > > > > IF SHIFT window to avoid interference from a near station. Another
> > > > > possibility is to set LSB with 1KHz up instead USB with 1KHz down. I
> > > > > see that in many moments it solve many interference.
> > > > > I'm afraid SMORWO if you had interference from my server.
> > > > >
> > > > > What do you think?
> > > > >
> > > > > Best 73
> > > > >
> > > > > Roberto IS0GRB
> > > > >
> > > > > On Sunday 9 September 2007 11:19, Rein Couperus wrote:
> > > > > > I don't think we need 2 frequencies at the moment until we have too
> > > > > > many users on 1 freq...
> > > > > >
> > > > > > Roberto can you join us on 10.148.250 and switch the beacon off?
> > > > > >
> > > > > > Another possibility is to move a bit further up (10148.750) so we
> > > > > > can effectively use the 500 Hz filter. PI4TUE does not even have an
> > > > > > xtal filter, so it receives 10148.500 almost as strong as
> > > > > > 10148.250.
> > > > > >
> > > > > > This is all new, both SM0RWO and IS0GRB-3 are very strong here...
> > > > > > My ORION can handle the short spacing but the FT897D (300 HZ
> > > > > > filter) has problems.
> > > > > >
> > > > > > 73,
> > > > > >
> > > > > > Rein PA0R
> > > > > >
> > > > > > > -----Ursprüngliche Nachricht-----
> > > > > > > Von: pskmail@xxxxxxxxxxxxx
> > > > > > > Gesendet: 08.09.07 15:44:55
> > > > > > > An: pskmail@xxxxxxxxxxxxx
> > > > > > > Betreff: [pskmail] PSKmail jamming itself (30 meter fq)
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > > Hi,
> > > > > > >
> > > > > > > With the current use of both 10148.25 and 10148.50 I am having
> > > > > > > trouble with my server. I have a 500 Hz filter on the server and
> > > > > > > the 10148.50 qrg falls within its range. Naturally 10148.50 isnt
> > > > > > > decoded but it destroys weak frames received on 10148.25 anyhow.
> > > > > > > A DCD wouldnt work either as the upper qrg is just a little to
> > > > > > > much offset...
> > > > > > >
> > > > > > > I don't see a point of using two frequencies on 30 meters, if
> > > > > > > there is such a requirement then can we pse move them a bit
> > > > > > > further apart? I suggest that we standardize on using 10148.25
> > > > > > > for all servers, that way aprs pos and pings can be received by
> > > > > > > more servers on the same qrg.
> > > > > > >
> > > > > > > 73 de Per, sm0rwo
>
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