Re: [digitalradio] PSK63F
I just finished my very first ragchew using PSK63F...I am very impressed. I was in QSO with Don (W1OER) and we were on 80 meters. I was running my usual 5 watts and we compared my 5 watt signal using PSK31, and then PSK63f. Don reports that he got most of my print using the PSK31, but I was solid print with PSK63F, not a letter missed. I will continue to use it and it is a fun mode! Very 73 to all, Glenn (WB2LMV) From: David w1...@w1hkj.com To: digitalradio@yahoogroups.com Sent: Wed, January 6, 2010 4:53:38 AM Subject: [digitalradio] PSK63F PSK63F is available on the soon to be released versopm 3.13 of fldigi. You can download the beta test version for various OS here: http://www.w1hkj. com/alpha/ fldigi-flarq/ This version also supports new modes, PSK-125R, PSK-250R and PSK-500R; the R indicating Robust. These modes are similar to PSK63F, but also include an interleaver. You can learn more about these modes here: http://www.w1hkj. com/Fldigi- Help-3.13 Source code for fldigi is always available for alpha and release versions. 73, Dave, W1HKJ fldigi development team
[digitalradio] PSK63F
PSK63F is available on the soon to be released versopm 3.13 of fldigi. You can download the beta test version for various OS here: http://www.w1hkj.com/alpha/fldigi-flarq/ This version also supports new modes, PSK-125R, PSK-250R and PSK-500R; the R indicating Robust. These modes are similar to PSK63F, but also include an interleaver. You can learn more about these modes here: http://www.w1hkj.com/Fldigi-Help-3.13 Source code for fldigi is always available for alpha and release versions. 73, Dave, W1HKJ fldigi development team
Re: [digitalradio] PSK63F
David, it should be noted that PSK500X should not be used in the U.S. only above 10m and Higher. Russell 1- Whoever said nothing is impossible never tried slamming a revolving door! 2- A government big enough to give you everything you want, is strong enough to take everything you have. - Thomas Jefferson IN GOD WE TRUST Russell Blair (NC5O) Skype-Russell.Blair Hell Field #300 DRCC #55 30m Dig-group #693 From: David w1...@w1hkj.com To: digitalradio@yahoogroups.com Sent: Wed, January 6, 2010 3:53:38 AM Subject: [digitalradio] PSK63F PSK63F is available on the soon to be released versopm 3.13 of fldigi. You can download the beta test version for various OS here: http://www.w1hkj. com/alpha/ fldigi-flarq/ This version also supports new modes, PSK-125R, PSK-250R and PSK-500R; the R indicating Robust. These modes are similar to PSK63F, but also include an interleaver. You can learn more about these modes here: http://www.w1hkj. com/Fldigi- Help-3.13 Source code for fldigi is always available for alpha and release versions. 73, Dave, W1HKJ fldigi development team
Re: [digitalradio] PSK63F
Thanks Patrick, I'll add PSK63F sometime then, Simon Brown, HB9DRV - Original Message - From: Patrick Lindecker Hello Simon, PSK63F is a bit more quicker that PSK31, a bit more sensitive, is less sensitive to Doppler modulation and is more reliable due to the convolutional coding. It is a good choice. I don't see any interest in PSK125F.
Re: [digitalradio] PSK63F
Another reason why PSK31 is so popular is that it's easy for developers to add support, it's the basic digital mode these days (along with RTTY). There are several open source implementations available which cover Windows and Linux. I haven't been able to keep up with Patrick's work as I have been to involved in getting some other basic software written; for ARQ modes such as FAE 400 to be adopted we need to get a GPL source code available so that it's easy for other developers to add support. Myself I'm not too interested in the emergency comms side of things, at the moment more the normal chit-chat QSO modes. I must say that Patrick has excellent ideas. Simon Brown, HB9DRV - Original Message - From: Rick [EMAIL PROTECTED] What we needed the most, were sound card ARQ modes such as FAE 400 in Multipsk, which is the first Windows sound card ARQ mode that works asynchronously, (as needed), to send full ASCII characters, error free, at a speed about twice as fast as PSK31 but can work deeper into the noise, especially with memory ARQ, and eliminates the timing issues that were such a problem with hardware ARQ modes.
Re: [digitalradio] PSK63F
Hello Simon, PSK63F is a bit more quicker that PSK31, a bit more sensitive, is less sensitive to Doppler modulation and is more reliable due to the convolutional coding. It is a good choice. I don't see any interest in PSK125F. 73 Patrick - Original Message - From: Simon Brown To: digitalradio@yahoogroups.com Sent: Friday, November 30, 2007 8:57 PM Subject: [digitalradio] PSK63F Has PSK63F / PSK125F shown advantages in real life? I am very tempted to code it up in my PSK engine (which is based on fldigi / gMFSK). Any comments really appreciated before I start pounding the keyboards. Simon Brown, HB9DRV
Re: [digitalradio] PSK63F
Hi Simon, I have tested these modes on HF NVIS with a nearby station, but the the trade off in speed to support the Viterbi coding is at least half or perhaps slightly over half. They seem to be rarely used and only if you ask the other station to try it for testing purposes. Like many of the newer digital modes, they have not gained much traction because for many hams, PSK31 is good enough. If conditions do not permit PSK31 operation, they may consider propagation to be too poor to continue digital modes, even though they may not realize that some digital modes will still get through. What we needed the most, were sound card ARQ modes such as FAE 400 in Multipsk, which is the first Windows sound card ARQ mode that works asynchronously, (as needed), to send full ASCII characters, error free, at a speed about twice as fast as PSK31 but can work deeper into the noise, especially with memory ARQ, and eliminates the timing issues that were such a problem with hardware ARQ modes. Although the footprint is much wider than PSK 31, it is not that much different from PSK modes running at 125 baud and with similar speed to PSK125F even though it uses an 8FSK 50 baud waveform. Another surprising mode is Nino Porcino, IZ8BLY's CHIP modes that did not seem to have any advantages and yet turned out to work better than most modes under high QRN conditions and has been selected by at least one digital traffic net as one of their main modes. I wonder if this type of mode has potential for ARQ? 73, Rick, KV9U Simon Brown wrote: Has PSK63F / PSK125F shown advantages in real life? I am very tempted to code it up in my PSK engine (which is based on fldigi / gMFSK). Any comments really appreciated before I start pounding the keyboards. Simon Brown, HB9DRV No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.503 / Virus Database: 269.16.11/1161 - Release Date: 11/30/2007 12:12 PM
[digitalradio] PSK63F
Has PSK63F / PSK125F shown advantages in real life? I am very tempted to code it up in my PSK engine (which is based on fldigi / gMFSK). Any comments really appreciated before I start pounding the keyboards. Simon Brown, HB9DRV
