Re: [digitalradio] THOR is static-proof (Re: KV9U - MT63)
Skip, MT63-1000 has a -5 dB minimum S/N, but MFSK16 has a -13.5 dB minimum S/N, so the static tests you made must be at signal levels high enough that MT63-1000 decodes, which may not be a realistic level. That is true. Fortunately, there are times when signals are above the decode threshold for the majority of modes. That gives us the chance to test the higher throughput modes to see what works in heavy static. MFSK16 turned out (after three months of testing) to be the most static-resistant mode of all That is interesting Skip. It did seem to do slightly better than THOR22 during n simulated tests. Did you see any advantage in throughput with MT63 during the static crash tests when signals were adequate? Tony -K2MO
Re: [digitalradio] AFC in FL-Digi
We use search acquisition range of 40Hz , and 6dB for PSK250. That will solve your problem. AFC should be on on. Sweet spot wherever your filter sweet spot is. E.g. to use the DSP on a IC756 we use 1500, default is 1000 Hz. Use a 300 Hz filter if possible. Rein PA0R -Ursprüngliche Nachricht- Von: Andrew O'Brien k3uka...@gmail.com Gesendet: 21.03.09 22:58:09 An: digitalradio@yahoogroups.com Betreff: [digitalradio] AFC in FL-Digi Tommi, I tightened up the AFC in FL-DIGI , that helped . CONFIGURE SOUNDCARD MODEMS PSK then set the range. I went with 100 Hz. Andy K3UK --- In digitalradio@yahoogroups.com, Tommi Holopainen oh7...@... wrote: Same problem here, AFC vy restless.. -Tommi OH7JJT- Andrew O'Brien kirjoitti: Seems that the FL-Digi waterfall pointer really jumps around at PSK250, AFC seems to catch it though. SSame Announce your digital presence via our Interactive Sked Page at http://www.obriensweb.com/sked Recommended software: Winwarbler, FLDIGI, DM780, or Multipsk Yahoo! Groups Links -- http://pa0r.blogspirit.com Announce your digital presence via our Interactive Sked Page at http://www.obriensweb.com/sked Recommended software: Winwarbler, FLDIGI, DM780, or Multipsk Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/digitalradio/ * Your email settings: Individual Email | Traditional * To change settings online go to: http://groups.yahoo.com/group/digitalradio/join (Yahoo! ID required) * To change settings via email: mailto:digitalradio-dig...@yahoogroups.com mailto:digitalradio-fullfeatu...@yahoogroups.com * To unsubscribe from this group, send an email to: digitalradio-unsubscr...@yahoogroups.com * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [digitalradio] PSKMAIL --- Gmail?
The servers communicate with gmail using TLS. For a gmail address the pop user id must be set to addr...@gmail.com, pop host is pop.gmail.com 73, Rein PA0R -Ursprüngliche Nachricht- Von: Andrew O'Brien k3uka...@gmail.com Gesendet: 22.03.09 01:20:23 An: digitalradio@yahoogroups.com Betreff: [digitalradio] PSKMAIL --- Gmail? How is gmail set up for pskmail ? Andy K3UK Announce your digital presence via our Interactive Sked Page at http://www.obriensweb.com/sked Recommended software: Winwarbler, FLDIGI, DM780, or Multipsk Yahoo! Groups Links -- http://pa0r.blogspirit.com Announce your digital presence via our Interactive Sked Page at http://www.obriensweb.com/sked Recommended software: Winwarbler, FLDIGI, DM780, or Multipsk Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/digitalradio/ * Your email settings: Individual Email | Traditional * To change settings online go to: http://groups.yahoo.com/group/digitalradio/join (Yahoo! ID required) * To change settings via email: mailto:digitalradio-dig...@yahoogroups.com mailto:digitalradio-fullfeatu...@yahoogroups.com * To unsubscribe from this group, send an email to: digitalradio-unsubscr...@yahoogroups.com * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [digitalradio] PSKmail QRG and features/issues
In EU only 500 Hz bandwidth is allowed on 30 meters. I would suggest those interested in pskmail to discuss further on the pskmail list, you are invited to join at http://www.freelists.org/archive/pskmail. The chances you get help there are bigger and to organize the servers all present server ops should be part of the discussion. By the way, you can ask some of the servers to QSY to a traffic frequency if you expect to have a longer session, so the APRS/calling frequency remains clear. It also helps if the servers listen on that frequency during one minute in the cycle, so if you call there at the right point in time you will not disturb the calling/APRS frequency. Not all servers do this yet, as it requires freq. control of the transmitter. All a matter of organization 73, Rein PA0R PS: This mode is only interesting for mobile or emergency stations which lack internet so the activity on the servers will drop quickly :) -Ursprüngliche Nachricht- Von: Rick W mrf...@frontiernet.net Gesendet: 22.03.09 02:59:19 An: digitalradio@yahoogroups.com Betreff: Re: [digitalradio] PSKmail QRG and features/issues My preference would be to follow the band plan. Assuming I understand things correctly, on 30 meters it is intended that modes up to 2700 Hz remain in the 10.140 - 10.150 sub band and all narrow digimodes (500 Hz or less) in the 10.130 - 10.140, with 10.100 - 10.130 for CW. There is no comment on automatic operation on that band. Why not operate on what has been an unused part of the band from about 10.132 - 10.138? Do you hear stations operating in that part in your region? I tune around quite a bit and have found it pretty much dead. As far as busy frequency detection, I suspect that Winlink 2000 may continue with their rather open viewpoint expressed by their administrator that turning off such protection is needed due to malicious activities and because the bands are so busy. But then again maybe they will surprise us. 73, Rick, KV9U kh6ty wrote: Rick wrote: It was very difficult to actually use the frequency due to many other stations transmitting on top of the server and my signals. What! You were on the frequency first and someone transmitted over top of you? Don't they always listen first? ;-) Therefore, we must be very grateful for Rein's decision to stay in the area with the other automatic stations, even if his signal is narrow and could go elsewhere. However, it might be feasible to operate PSKmail in the guardbands between Pactor-3 station assigned frequencies with less QRM. I think that Pactor-3 seldom uses more than 2100 Hz bandwidth, but the channel is 2500 Hz wide. I hope all future mailbox operators will be just as considerate. An automatic station is unable to QSY, even if it could hear that it was interferring with an ongoing QSO, because it is necessary for it to remain on a published frequency in order to be contactable, and besides, there is nobody present at the automatic station in order to shift frequency. How long do you REALLY expect the Winmor busy channel detector to stay enabled! 73, Skip KH6TY http://kh6ty.home.comcast.net Announce your digital presence via our Interactive Sked Page at http://www.obriensweb.com/sked Recommended software: Winwarbler, FLDIGI, DM780, or Multipsk Yahoo! Groups Links -- http://pa0r.blogspirit.com Announce your digital presence via our Interactive Sked Page at http://www.obriensweb.com/sked Recommended software: Winwarbler, FLDIGI, DM780, or Multipsk Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/digitalradio/ * Your email settings: Individual Email | Traditional * To change settings online go to: http://groups.yahoo.com/group/digitalradio/join (Yahoo! ID required) * To change settings via email: mailto:digitalradio-dig...@yahoogroups.com mailto:digitalradio-fullfeatu...@yahoogroups.com * To unsubscribe from this group, send an email to: digitalradio-unsubscr...@yahoogroups.com * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[digitalradio] APRS positions in pskmail
BTW, I am seeing some APRS posits in Asia with US calls when you enter West longitudes you have to use a minus sign :) edit-preferences-user date-longitude tnx, Rein PA0R -- http://pa0r.blogspirit.com Announce your digital presence via our Interactive Sked Page at http://www.obriensweb.com/sked Recommended software: Winwarbler, FLDIGI, DM780, or Multipsk Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/digitalradio/ * Your email settings: Individual Email | Traditional * To change settings online go to: http://groups.yahoo.com/group/digitalradio/join (Yahoo! ID required) * To change settings via email: mailto:digitalradio-dig...@yahoogroups.com mailto:digitalradio-fullfeatu...@yahoogroups.com * To unsubscribe from this group, send an email to: digitalradio-unsubscr...@yahoogroups.com * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [digitalradio] THOR is static-proof (Re: KV9U - MT63)
We did not test MT63, because only MT63-2000 could work with flarq and ARQ, and we think it would be irresponsible to use that on the shared ham bands for the little benefit it would bring compared to much more narrow modes. It is OK to use on MARS, because each MARS frequency channel is dedicated, not shared (well, time-shared by different nets, and the channels are voice-bandwidth as they are also used interchangebly with voice. My experience with MT63-1000 on MARS is that it works very well under QRM and static, as expected, but that is with S5-S9 signals in the South Carolina - Florida corridor, and weaker stations often report negative copy, probably because the S/N is not good enough at their locations. Will find out more about the MT63-1000 real-world static resistance as summertime approaches. 73, Skip KH6TY http://kh6ty.home.comcast.net - Original Message - From: Tony To: digitalradio@yahoogroups.com Sent: Sunday, March 22, 2009 3:03 AM Subject: Re: [digitalradio] THOR is static-proof (Re: KV9U - MT63) Skip, MT63-1000 has a -5 dB minimum S/N, but MFSK16 has a -13.5 dB minimum S/N, so the static tests you made must be at signal levels high enough that MT63-1000 decodes, which may not be a realistic level. That is true. Fortunately, there are times when signals are above the decode threshold for the majority of modes. That gives us the chance to test the higher throughput modes to see what works in heavy static. MFSK16 turned out (after three months of testing) to be the most static-resistant mode of all That is interesting Skip. It did seem to do slightly better than THOR22 during n simulated tests. Did you see any advantage in throughput with MT63 during the static crash tests when signals were adequate? Tony -K2MO
RE: [digitalradio] THOR is static-proof (Re: KV9U - MT63)
I would like to remind all, if you are not already aware, to turn AGC off when static crashes are an issue. If you are fortunate enough to operate in a mixed mode net, turn it to fast, or for inland stations, medium. Slow recovery time of the rig in response to a strong signal cannot be corrected by a sound card protocol; no matter how robust. While we are at it, when using MT-63 at 1K long, keep in mind that most software hard codes a starting frequency of 500 Hz, and that is a 1.5Khz total width. It doesn't work well if you have your filters set for PSK, or a narrow-band mode. In running digital training nets for newcomers to MT-63, it is absolutely amazing how many ways can be found to lessen it's effectiveness; primarily due to not understanding where the signal is, where it is going, and how it is getting there. It took me a long time to factor out many of the common reasons it didn't work. That is one of the main reasons that PSK-31 is so popular; even a caveman can do it. (Sorry Geico; couldn't resist) David KD4NUE -Original Message- From: digitalradio@yahoogroups.com [mailto:digitalra...@yahoogroups.com] On Behalf Of Tony Sent: Sunday, March 22, 2009 3:04 AM To: digitalradio@yahoogroups.com Subject: Re: [digitalradio] THOR is static-proof (Re: KV9U - MT63) Skip, MT63-1000 has a -5 dB minimum S/N, but MFSK16 has a -13.5 dB minimum S/N, so the static tests you made must be at signal levels high enough that MT63-1000 decodes, which may not be a realistic level. That is true. Fortunately, there are times when signals are above the decode threshold for the majority of modes. That gives us the chance to test the higher throughput modes to see what works in heavy static. MFSK16 turned out (after three months of testing) to be the most static-resistant mode of all That is interesting Skip. It did seem to do slightly better than THOR22 during n simulated tests. Did you see any advantage in throughput with MT63 during the static crash tests when signals were adequate? Tony -K2MO
[digitalradio] QRV MT63 1K - 14106.0
All, I'm QRV 14106.0 USB / MT63 - Long Interleave / beaming west at 20:00 utc. I'll be in the shack most of the evening - March 22 / 23. Skeds welcome... Tony -K2MO
Re: [digitalradio] THOR is static-proof (Re: KV9U - MT63)
David, I would like to remind all, if you are not already aware, to turn AGC off when static crashes are an issue. Good advise. A fast AGC setting may help as well if there's no way to turn it off. Tony -K2MO - Original Message - From: David Little dalit...@bellsouth.net To: digitalradio@yahoogroups.com Sent: Sunday, March 22, 2009 9:58 AM Subject: RE: [digitalradio] THOR is static-proof (Re: KV9U - MT63) I would like to remind all, if you are not already aware, to turn AGC off when static crashes are an issue. If you are fortunate enough to operate in a mixed mode net, turn it to fast, or for inland stations, medium. Slow recovery time of the rig in response to a strong signal cannot be corrected by a sound card protocol; no matter how robust. While we are at it, when using MT-63 at 1K long, keep in mind that most software hard codes a starting frequency of 500 Hz, and that is a 1.5Khz total width. It doesn't work well if you have your filters set for PSK, or a narrow-band mode. In running digital training nets for newcomers to MT-63, it is absolutely amazing how many ways can be found to lessen it's effectiveness; primarily due to not understanding where the signal is, where it is going, and how it is getting there. It took me a long time to factor out many of the common reasons it didn't work. That is one of the main reasons that PSK-31 is so popular; even a caveman can do it. (Sorry Geico; couldn't resist) David KD4NUE -Original Message- From: digitalradio@yahoogroups.com [mailto:digitalra...@yahoogroups.com] On Behalf Of Tony Sent: Sunday, March 22, 2009 3:04 AM To: digitalradio@yahoogroups.com Subject: Re: [digitalradio] THOR is static-proof (Re: KV9U - MT63) Skip, MT63-1000 has a -5 dB minimum S/N, but MFSK16 has a -13.5 dB minimum S/N, so the static tests you made must be at signal levels high enough that MT63-1000 decodes, which may not be a realistic level. That is true. Fortunately, there are times when signals are above the decode threshold for the majority of modes. That gives us the chance to test the higher throughput modes to see what works in heavy static. MFSK16 turned out (after three months of testing) to be the most static-resistant mode of all That is interesting Skip. It did seem to do slightly better than THOR22 during n simulated tests. Did you see any advantage in throughput with MT63 during the static crash tests when signals were adequate? Tony -K2MO
