Re: [digitalradio] Message ID in multipsk [2 Attachments]
Patrick, Just checked the peak amplitude of the RSID / Call ID clips and they are both within 0.2db of each other. These are the audio files I used to determine the 100% throughput SNR for each mode using PathSim. I am sending you the files so you can test them at your leisure. The RSID (Mode ID) and the CALL ID are repeated 8 times on each clip. I repeated the test several times this evening and I still come up with the 6db difference between the two for 100% throughput. I should mention that I'm not using the Multipsk S/N indicator to measure the signal-to-noise; I'm using the SNR figures indicated by the path simulator. Tony -K2MO
Re: [digitalradio] Re: lpt to com port assignment?
You need a USB serial adapter. I have this one: http://www.amazon.com/Keyspan-Speed-Serial-Adapter-USA-19HS/dp/BVYJRY Works FB with my old PK232. 73 -Josh KD7PAJ Thank you all- my laptop does not have a 9 pin port. The 25 pin is the only available parallel port. Any Ideas?
Re: [digitalradio] Message ID in multipsk
Hello Tony, The S/N that you measure seems quite close to mine (-20 dB against -16 dB and -14 against -13 dB). In our measures, there is always a certain uncertainty because the noise is not really white after going through a sound card output and a sound card input. Moreover, in fact in all my tests, I accept about 2 % of errors because 0% error is impossible to reach (it can be approched but not reached). So there is certainly a small uncertainty about the 100% success. I think the 4 dB in RS ID of difference must due to the burst character of the RS ID as Path Sim introduces filters having a certain length, so... If it's ok with you, I'll send a few audio clips so you can test the RSID and Call ID at different SNR levels measured with PathSim. I'll include the SNR in the clip title. Thanks Tony, but I'm more confident on what I program. the Multipsk S/N indicator to measure the signal-to-noise The Call ID S/N is not precise at all. It can only give an idea of the S/N value. 73 Patrick - Original Message - From: Tony To: digitalradio@yahoogroups.com Sent: Saturday, October 31, 2009 3:05 AM Subject: Re: [digitalradio] Message ID in multipsk Patrick, Hello Tony, What are the numbers that you get? In fact, from my measures, the first decodings appear at -19 dB in RS ID and -16 dB in Call ID (but respectively -16 and -13 dB for almost 100 % success). I get the following SNR figures for 100% decode: RS ID -20db Call ID -14db Figures are nearly the same for the Call ID, but the 4db discrepancy in the RSID seems odd. I believe this is the first time we've compared SNR figures for 100% throughput Patrick; our minimum SNR figures are usually identical. I think it must be a bit difficult to measure S/N for bursts. I mix signal and noise (just noise without paths delays...) at digital level before the analogical transform and then I see at what level I can decode. Sounds like an accurate way to test Patrick. Most of my digital mode testing is done with PathSim. The program gives the option of testing the signal-to-noise ratio using Gaussian white noise without any ionospheric path distortion. I'm always careful to make sure that the audio levels are the same for each mode before I run them through the simulator. If it's ok with you, I'll send a few audio clips so you can test the RSID and Call ID at different SNR levels measured with PathSim. I'll include the SNR in the clip title. Thanks Patrick, Tony -K2MO - Original Message - From: Tony To: digitalradio@yahoogroups.com Sent: Friday, October 30, 2009 2:09 AM Subject: Re: [digitalradio] Message ID in multipsk Patrick, Thanks for adding the messaging feature. Andy, K3UK, and I were able to copy Sholto's, RS messages some 3700km away on 20 meters. Sholto, K7TMG, was running 5 watts and a vertical antenna. We found the high sensitivity of the message mode useful as signals fell below the decode threshold of the chat modes we were using at the time. The RS ID is detectable at -16 dB but the Call ID only at about -13 dB (however still better than PSK31). Very sensitive, more than most sound card chat-modes. I'm not sure why Patrick, but my SNR tests indicate that the RSID used for mode detection has a 6db advantage over the CALL ID. I ran both modes through the path simulator 10 times each and established a minimum SNR when they decoded 10 out-of 10 times or 100%. I'll check all levels and try again. Thanks Patrick. Tony -K2MO - Original Message - From: Patrick Lindecker f6...@free.fr To: digitalradio@yahoogroups.com Sent: Thursday, October 29, 2009 4:38 PM Subject: Re: [digitalradio] Message ID in multipsk Hello Tony, The Call ID that I just have slightly modified is based on a specific RS ID code (it was the most simple, but it is not a mode ID, just a borrowing) on which is implemented a more conventional frame (56 bits + CRC). The RS ID is detectable at -16 dB but the Call ID only at about -13 dB (however still better than PSK31). 73 Patrick - Original Message - From: Tony To: digitalradio@yahoogroups.com Sent: Thursday, October 29, 2009 7:52 PM Subject: Re: [digitalradio] Message ID in multipsk Steinar, I am testing the Message ID in Patrick's latest beta of the MULTIPSK (VERSION 4.16 of 27/10/2009) on 14.074. I haven't had the opportunity to use the message ID on-the-air, but I did test the mode between two PC's and it seems to work fine. I would assume the Reed Solomon messaging will be just as sensitive and robust as RS ID; should work well. Hope to see you on the air Steinar... Tony
[digitalradio] Re: FLARQ outperforms WINMOR
DID ANYONE CHECKOUT THE BAUD RATE FOR PSK 500 ? IS IT A SINGLE STREAM ? DAVID KF4WBS / NNN0LES --- In digitalradio@yahoogroups.com, Ron Wenig rwe...@... wrote: Andy, Thanks for the Flarq tests last night. That was really fun. I can see how useful this can be in emergency communications in addition to a program like Winmor. Winmor with its capabilities to send email through the Winlink network and NBEMS with its peer to peer capabilities to send error free digital data. I like Flarq's capability to use a simple setup like a low power radio, simple antenna and especially that $1.50 USB sound card that you were using :-) 73, Ron ny3j Andy obrien wrote: Well, not an apples to apples test.. but Ron NY3J and I played for quite a while with FLARQ tonight on 80M and 40. 80M was was in poor shape with QRN and weak signals but we managed a few slow MFSK16 email transfers. We then switched to 40M and I received Ron about S5, he was 200 miles away. We really had NO problems transferring email and text files using PSK250. I sent one big file that averaged 800 bytes per minute . On Winmor I have not had more than 300 bytes per minute although some have reported 1000 bytes per minute. My sound card was a $1.50 USB sound adapter. After an hour or so, we tried PSK500 but were not able to get a connect perhaps the band was changing. So, while we are having fun seeing the good progress of WINMOR ... don't forget FLARQ. It is simple and it works well. My next step is to see if I can run both FLARQ and PSKMAIL at the same time. While in the shack until about 0600 UTC, I will have my FLARQ beacon beaconing every 15 minutes. I have RS ID on , so you can switch me over if you need to change modes. Drop me an email on 7083 (7082 dial, plus 1000 hz on waterfall) When it is sleep time, I will close since we do not run this unattended. Andy K3UK
[digitalradio] Linux Here I come!
I have a backup laptop that I want to install Linux on for learning and probable switchover when XP support goes away. I did not realize how many different flavors of Linux there is. Can the group recommend a flavor that is favorable to ham radio. Any recommended ham radio programs would also be appreciated. After a learning curve I'll probably be on the air utilizing linux vice windows. Any help/advice would be greatly appreciated. Thanks and 73 Marty W8AKS
Re: [digitalradio] Linux Here I come!
I would recommend Ubuntu 9.04 to start with. It's what most of us here locally are using. Ubuntu is a variatnt of Debian which is the basis for a couple of other 'flavors' of Linux. Ubuntu and Debian come with WSJT, fldigi, and gMSFK as supported software installs. You'll also have other Amatuer radio related software to pick and choose from in the Synaptic package manager ranging from Sat tracking to NEC antenna modeling software. All open source software...:) You will even be able to upload to the ARRL Logbook Of The World even. Another benefit is that if you want to run PSKmail, you will be able to. I have set it up, but not done much with it other than to know that it works. I would recommend that you find a local Linux Users Group (LUG) in your area to attend as that usually is the BEST source of information on any problems that you may encounter. Here's a link to a few in that might be close to you for help: http://www.linux.org/groups/usa/westvirginia.html Just do a search for Linux User Groups in your favorite search engine to find others. Hope this helps some. James W8ISS
Re: [digitalradio] Linux Here I come!
James French wrote: I would recommend Ubuntu 9.04 to start with. I have not downloaded it yet but I believe Ubuntu 9.10 was released this past week. Tim, N9PUZ
Re: [digitalradio] Linux Here I come!
I'm using ubuntu 9.10 here now and its great. You can install fldigi through synaptic, fldigi 3.11.4 is on the mirrors. I recommend that you learn about mirrors and synaptic, on ubuntu. The ham radio section is packed. 73 de Per, sm0rwo From: Tim N9PUZ tim.n9...@gmail.com To: digitalradio@yahoogroups.com Sent: Sat, October 31, 2009 7:50:44 PM Subject: Re: [digitalradio] Linux Here I come! James French wrote: I would recommend Ubuntu 9.04 to start with. I have not downloaded it yet but I believe Ubuntu 9.10 was released this past week. Tim, N9PUZ
[digitalradio] Fwd: Georgia Statewide ARES Network Receives Funding $$$ for D-STAR Equipment [1 Attachment]
Great example of what's possible with good planning. See message below attached presentation. $$$ Georgia statewide network receives funding $$$ Posted by: WB4QDX wb4...@arrl.net jdavis6129 Date: Thu Oct 29, 2009 4:38 pm ((PDT)) An official announcement will be released in the next few days, but it can be announced to the Amateur community that $165,000 in Federal funding has been secured by Georgia Emergency Management Agency (GEMA) to complete the statewide Georgia D-STAR network. Equipment has already been ordered and is beginning to arrive. This is a project that began back in 2005 with a vision for Amateur Radio emergency communications in Georgia. Georgia Public Broadcasting's former Director of Engineering Mark Fehlig, WA6NGC, seized an opportunity to install two Amateur Radio antennas on each of nine tall television towers that provide statewide Public Television coverage as a part of the required conversion to Digital Television. Fehlig designated Georgia ARES to control the use of these facilities for emergency communications. The next task was to determine what technology or mode would provide the best use of these sites for emergency communications. After considering many modes and technologies including linked FM repeaters and packet. About this time, the D-STAR digital technology was emerging as a state of the art platofrm for voice and data communications. D-STAR allows flexible linking of repeaters and provides simultaneous voice and low speed data along with high speed data with Internet connectivity on 1.2 GHz. 2 meter, 440 and 1.2 GHz voice and data repeaters will be installed on each of the nine television towers of Georgia Public Broadcasting (GPB). These nine towers are strategically located to provide near statewide Public Television coverage. They will also provide similar Amateur Radio coverage from two antennas located between 500 and 600 feet above ground and connected with 1 5/8 transmission lines. GPB will also provide indoor equipment space with backup power at each site. Connectivity on GPB's robust DS-3 data network will be provided with Internet access to allow flexible linking of repeaters using the D-STAR technology. Two of the D-STAR repeaters are already in operation at Pembroke, Georgia near Savannah and atop Stone Mountain serving the Atlanta metro area. The funding also provides 20 dual-band D-STAR radios for installation at EMA offices around the state, a portable UHF D-STAR repeater for emergency deployment, three 1.2 GHz D-STAR radios with laptops for sending data and photos from field locations and a robust reflector to serve the Georgia network during emergency conditions and available for general use during non-emergency times. The complete Georgia D-STAR network should be in operation by early 2010. The Georgia network will complement other D-STAR systems planned or in operation in neighboring states of Alabama, Florida and South Carolina creating regional capabilities in the Southeast. Weather systems approach Georgia either as severe thunderstorms and tornadoes from the West or tropical systems from the Gulf or the Atlantic. Having flexible statewide communications will provide new capabilities to support emergency communications. John Davis WB4QDX District Emergency Coordinator Georgia ARES
Re: [digitalradio] Linux Here I come!
Tim, Your correct. I wasn't paying attention to the latest upgrade as I normally give the newest versions a few weeks before I upgarde to them. James W8ISS = On Saturday 31 October 2009 14:50:44 Tim N9PUZ wrote: James French wrote: I would recommend Ubuntu 9.04 to start with. I have not downloaded it yet but I believe Ubuntu 9.10 was released this past week. Tim, N9PUZ Suggested frequencies for calling CQ with experimental digital modes = 3584,10147, 14074 USB on your dial plus 1000Hz on waterfall. Announce your digital presence via our Interactive Sked Pages at http://www.obriensweb.com/sked Yahoo! Groups Links
Re: [digitalradio] Linux Here I come!
I have to agree with using Ubuntu, and 9.10 is out. I upgraded from 9.04 and had no problem. You can also copy it to a disk and run it off that to make sure you like it before you do a hard install. I do wish HRD was available for Linux and I would dump windoze completely. 73 Kurt --- On Sat, 10/31/09, Per n59...@yahoo.com wrote: From: Per n59...@yahoo.com Subject: Re: [digitalradio] Linux Here I come! To: digitalradio@yahoogroups.com Date: Saturday, October 31, 2009, 2:59 PM I'm using ubuntu 9.10 here now and its great. You can install fldigi through synaptic, fldigi 3.11.4 is on the mirrors. I recommend that you learn about mirrors and synaptic, on ubuntu. The ham radio section is packed. 73 de Per, sm0rwo From: Tim N9PUZ tim.n9...@gmail. com To: digitalradio@ yahoogroups. com Sent: Sat, October 31, 2009 7:50:44 PM Subject: Re: [digitalradio] Linux Here I come! James French wrote: I would recommend Ubuntu 9.04 to start with. I have not downloaded it yet but I believe Ubuntu 9.10 was released this past week. Tim, N9PUZ
Re: [digitalradio] Linux Here I come!
For linux ham, I would recommend Linux Mint where you can install the o/s on your computer and download and install ham apps easily. If you want to run off a small O/S via cd or flash go with Puppy. Fldigi works good with either...gud luck, Alan On Sat, Oct 31, 2009 at 11:50 AM, Marty W8AKS w8ak...@gmail.com wrote: I have a backup laptop that I want to install Linux on for learning and probable switchover when XP support goes away. I did not realize how many different flavors of Linux there is. Can the group recommend a flavor that is favorable to ham radio. Any recommended ham radio programs would also be appreciated. After a learning curve I'll probably be on the air utilizing linux vice windows. Any help/advice would be greatly appreciated. Thanks and 73 Marty W8AKS -- Quote for the day: .Light travels faster than sound. That's why some people appear bright until you hear them speak. Alan Wilson 67 Bullseye Lane Victor, MT 59875 http://montanaham.tripod.com
[digitalradio] QRV ALE-400 / MT63 this evening
All, I'll be QRV ALE-400 / MT63-1K on 14106.0 USB this evening. Will QSY to 3592.0 +/- QRM later tonight. Tony -K2MO
Re: [digitalradio] Linux Here I come!
The Ubuntu Wubi installer offers a similar option as well. You can install it on top of Windows as you would a Windows application. Tim, N9PUZ Alan Wilson wrote: For linux ham, I would recommend Linux Mint where you can install the o/s on your computer and download and install ham apps easily. If you want to run off a small O/S via cd or flash go with Puppy. Fldigi works good with either...gud luck, Alan
Re: [digitalradio] Linux Here I come!
Okay, I've got 9.1 up and running off the Cd. Into the Synaptic Package Manager; but I can't find any of the ham programs (wsjt, fldigi, etc). Under the ALL, scroll all the way down with no success. What am I doing wrong? Do I need to install 9.1 to the hd in order to retrieve the packages? Thanks and 73 Marty W8AKS - Original Message - From: James French To: digitalradio@yahoogroups.com Sent: Saturday, October 31, 2009 18:29 PM Subject: Re: [digitalradio] Linux Here I come! I would recommend Ubuntu 9.04 to start with. It's what most of us here locally are using. Ubuntu is a variatnt of Debian which is the basis for a couple of other 'flavors' of Linux. Ubuntu and Debian come with WSJT, fldigi, and gMSFK as supported software installs. You'll also have other Amatuer radio related software to pick and choose from in the Synaptic package manager ranging from Sat tracking to NEC antenna modeling software. All open source software...:) You will even be able to upload to the ARRL Logbook Of The World even. Another benefit is that if you want to run PSKmail, you will be able to. I have set it up, but not done much with it other than to know that it works. I would recommend that you find a local Linux Users Group (LUG) in your area to attend as that usually is the BEST source of information on any problems that you may encounter. Here's a link to a few in that might be close to you for help: http://www.linux.org/groups/usa/westvirginia.html Just do a search for Linux User Groups in your favorite search engine to find others. Hope this helps some. James W8ISS
Re: [digitalradio] Message ID in multipsk
Patrick, I think you are right about the burst characteristics of the mode and the way the PathSim software handles this. Seems logical since our SNR tests have been consistent with other modes. I have an audio editor that has the capability of adding white noise, but it doesn't indicate the SNR once the mode audio is mixed. I mix signal and noise at digital level before the analogical transform and then I see at what level I can decode. What software are you using to determine the SNR decode level? Tony -K2MO
Re: [digitalradio] Linux Here I come!
I've tried out Ubuntu and Puppy linux ( on different machines ) and had no major problems with either of them. I like DSL Linux too. I've got to admit though that working with Linux is like wearing cowboy boots - the best part of it is at the end of the day when you take them off ( go back to using Windows ). It's interesting to do things differently and I like that, but the performance just isn't there with Linux. In the end, doing things with a good Windows box is always faster, easier, more certain and more reliable. If you are in the mood to tinker though, Linux is much much better than Windows for that. - It's most definately a learning experience, which is not so bad at all. 73 DE Charles Brabham, N5PVL Prefer to use radio for your amateur radio communications? - Stop by at HamRadioNet.Org ! http://www.hamradionet.org - Original Message - From: Alan Wilson To: digitalradio@yahoogroups.com Sent: Saturday, October 31, 2009 2:25 PM Subject: Re: [digitalradio] Linux Here I come! For linux ham, I would recommend Linux Mint where you can install the o/s on your computer and download and install ham apps easily. If you want to run off a small O/S via cd or flash go with Puppy. Fldigi works good with either...gud luck, Alan On Sat, Oct 31, 2009 at 11:50 AM, Marty W8AKS w8ak...@gmail.com wrote: I have a backup laptop that I want to install Linux on for learning and probable switchover when XP support goes away. I did not realize how many different flavors of Linux there is. Can the group recommend a flavor that is favorable to ham radio. Any recommended ham radio programs would also be appreciated. After a learning curve I'll probably be on the air utilizing linux vice windows. Any help/advice would be greatly appreciated. Thanks and 73 Marty W8AKS -- Quote for the day: .Light travels faster than sound. That's why some people appear bright until you hear them speak. Alan Wilson 67 Bullseye Lane Victor, MT 59875 http://montanaham.tripod.com
Re: [digitalradio] Linux Here I come!
I have fedora 11 on second drive of a dual boot system, i have installed a few of the ham software installed with no problems Loyd C.Headrick K4LCH K4LCH Vol State Hosting From: Charles Brabham n5...@uspacket.org To: digitalradio@yahoogroups.com Sent: Sat, October 31, 2009 9:09:57 PM Subject: Re: [digitalradio] Linux Here I come! I've tried out Ubuntu and Puppy linux ( on different machines ) and had no major problems with either of them. I like DSL Linux too. I've got to admit though that working with Linux is like wearing cowboy boots - the best part of it is at the end of the day when you take them off ( go back to using Windows ). It's interesting to do things differently and I like that, but the performance just isn't there with Linux. In the end, doing things with a good Windows box is always faster, easier, more certain and more reliable. If you are in the mood to tinker though, Linux is much much better than Windows for that. - It's most definately a learning experience, which is not so bad at all. 73 DE Charles Brabham, N5PVL Prefer to use radio for your amateur radio communications? - Stop by at HamRadioNet. Org ! http://www.hamradionet.org - Original Message - From: Alan Wilson To: digitalradio@ yahoogroups. com Sent: Saturday, October 31, 2009 2:25PM Subject: Re: [digitalradio] Linux Here Icome! For linux ham, I would recommend Linux Mint where you can install the o/s on your computer and download and install ham apps easily. If you want to run off a small O/S via cd or flash go with Puppy. Fldigi works good with either...gud luck, Alan On Sat, Oct 31, 2009 at 11:50 AM, Marty W8AKSw8ak...@gmail. com wrote: I have a backup laptop that I want to install Linux on for learning and probable switchover when XP support goes away. I did not realize how many different flavors of Linux there is. Can the group recommend a flavor that is favorable to ham radio. Any recommended ham radio programs would also be appreciated. After a learning curve I'll probably be on the air utilizing linux vice windows. Any help/advice would be greatly appreciated. Thanks and 73 Marty W8AKS -- Quote for the day: .Light travels faster than sound. That's whysome people appear bright until you hear them speak. Alan Wilson 67 Bullseye Lane Victor, MT 59875 http://montanaham. tripod.com
