Re: [digitalradio] MFTTY Path Simulaitons
Steinar, I did test the FEC mode at half speed using the canned simulations from Moe Wheatley's PathSim and there doesn't appear to be any difference in performance. The half-speed mode seems to be quite a bit less sensitive than other keyboard modes and I would imagine throughput would suffer when signals are weak. The 1/4 and 1/8 speed modes have better sensitivity, but they are slow. It does appear to have better stability than say PSK31 when signals are severely distorted; at least that seems to be the case with polar path simulations (see below). Tony - K2MO Minimum Sensitivity MFTTY (1/2 Speed).. -6db MFSK16...-14db Olivia 16/500-13db PSK31..-10db Simulation: High Latitude Disturbed Path delay: 7ms Frequency spread: 30Hz SNR: -3db (weak signal) Mode Throughput MFTTY (1/2 Speed). 10% MFSK16...75% Olivia 16/500..100% PSK31.no copy SNR: +10db (moderate signal) Mode Throughput MFTTY (1/2 Speed). 10% PSK31.no copy Simulation: Mid-Latitude Disturbed Path delay: 2ms Frequency spread: 1Hz SNR: -8db SNR (weak signal) Mode Throughput MFTTY (1/2 Speed). 25% MFSK16.100% Olivia 16/500..100% PSK31...70% SNR: +10db SNR (moderate signal) Mode Throughput MFTTY (1/2 Speed)... 80% MFSK16.100% Olivia 16/500..100% PSK31..90% Simulation: Low-Latitude Disturbed Path Delay: 6ms Frequency Spread: 10Hz SNR: -8db SNR (weak signal) Mode Throughput MFTTY (1/2 Speed)... 25% MFSK16.100% Olivia 16/500..100% PSK31.no copy SNR: +10db SNR (moderate signal) Mode Throughput MFTTY (1/2 Speed)... 80% MFSK16.100% Olivia 16/500..100% PSK31.no copy Have you done a path simulations test of the FEC version of the MFTTY mode? 73 de LA5VNA Steinar
Re: [digitalradio] MFTTY Path Simulaitons
Great! Thanks Tony 73 de la5vna Steinar Tony wrote: Steinar, I did test the FEC mode at half speed using the canned simulations from Moe Wheatley's PathSim and there doesn't appear to be any difference in performance. The half-speed mode s eems to be quite a bit less sensitive than other keyboard modes and I would imagine throughput would suffer when signals are weak. The 1/4 and 1/8 speed modes have better sensitivity, but they are slow. It does appear to have better stability than say PSK31 when signals are severely distorted; at least that seems to be the case with polar path simulations (see below). Tony - K2MO Minimum Sensitivity MFTTY (1/2 Speed).. . ... -6db MFSK16.. . . . ..-14db Olivia 16/500.. . . -13db PSK31... . . . -10db Simulation: High Latitude Disturbed Path delay: 7ms Frequency spread: 30Hz *SNR: -3db (weak signal)* Mode Throughput MFTTY (1/2 Speed).. . . . 10% MFSK16.. . . . . .75% Olivia 16/500.. . . . .100% PSK31... . . . . ..no copy *SNR: +10db (moderate signal)* Mode Throughput MFTTY (1/2 Speed).. . . . 10% PSK31... . . . . ..no copy Simulation: Mid-Latitude Disturbed Path delay: 2ms Frequency spread: 1Hz *SNR: -8db SNR (weak signal)* Mode Throughput MFTTY (1/2 Speed).. . . . 25% MFSK16.. . . . . ...100% Olivia 16/500.. . . . .100% PSK31... . . . . 70% *SNR: +10db SNR (moderate signal)* Mode Throughput MFTTY (1/2 Speed).. . . ... 80% MFSK16.. . . . . ...100% Olivia 16/500.. . . . .100% PSK31... . . . . ...90% Simulation: Low-Latitude Disturbed Path Delay: 6ms Frequency Spread: 10Hz *SNR: -8db SNR (weak signal)* Mode Throughput MFTTY (1/2 Speed).. . . ... 25% MFSK16.. . . . . ...100% Olivia 16/500.. . . . .100% PSK31... . . . . ..no copy * SNR: +10db SNR (moderate signal) * Mode Throughput MFTTY (1/2 Speed).. . . ... 80% MFSK16.. . . . . ...100% Olivia 16/500.. . . . .100% PSK31... . . . . ..no copy
[digitalradio] Airlink Express v1.7.1.3 Released
Hi there, I just released version v.1.7.1.3 of Airlink Express: http://www.airlinkexpress.org This version offers the following enhancements: - TX/RX switching through CAT commands for all supported radios (this eliminates the need for a separate comport and interface\ for PTT) - RTS Handshake option for FT-2000/9000/950/450 - CAT support for FT-2000/FT-950/FT-450/FTdx9000 support - CAT support for Elecraft K2 and K3 - CAT support for Kenwood radios - TX/RX window clear button on the toolbar - option to show the tone frequency or actual RF frequency (if CAT is turned on) on the waterfall and spectrum view - checkmark next to the callsign field that will indicate if you have worked a station before, with the option to have the log open automatically and display those prior contacts - partial log export so that you can select which contacts to export to an ADIF file - option to use left, right or both audio channels for input Please see the history page for a complete list of all enhancements, bug fixes, etc. The installer allows you to upgrade from older versions so that almost all settings, macros and log entries will be preserved. However, it is always wise to create a backup of your log through the Export to ADIF function (under the File menu) prior to upgrading the software. Airlink Express is a digital mode software package that is designed for Windows Vista and XP from the ground up, but it will support older versions of Windows, too. The software uses the MMVari DSP engine and is built on the Microsoft .Net 2.0 Framework. For this release the software has been completely rewritten in C#. If you have any questions, suggetions or find any problems, please don't hesitate to contact me directly as I not frequently visit email lists due to time constraints. 73, --Alex KR1ST http://www.kr1st.com http://www.airlinkexpress.org
[digitalradio] Windows Vista for digital mode soundcard applications ?
I am in the market for a new PC to be used in my shack. I have found a few good deals, some with Vista as the OS. There are some with XP but I was wondering about a switch to Vista. My main applications would be Ham Radio Deluxe, Multipsk, FL-Digi, DX Lab , Microham device router, PC-ALE, and WSJT. Anyone know if any of these applications have issues with Vista ?
Re: [digitalradio] Windows Vista for digital mode soundcard applications ?
Hey, Andy - My Info -= Acer Aspire M5461 Pentium Dual CPU E2200 @ 2.2Ghz 2.2 Ghz RAM 4 Gb OS 64-bit SP1 Vista Home Premium I'm using Ham Radio Deluxe/DM780, Airmail, I've used Multipsk, and tried PC-ALE. I also have EasyPal working but, in MY case, the software won't let me do a couple of functions while using VISTA 64. Specifically, creating waterfall text or pictures. The only other issue I did have was a lack of backward compatibility with PK-232 software, XPwin, that I used on an older XP computer before it crashed three months ago, or so. Otherwise, I've had no major issues whatsoever, in MY case. Howard W6IDS Richmond, IN - Original Message - From: Andrew O'Brien k3uka...@gmail.com To: digitalradio@yahoogroups.com Sent: Tuesday, February 03, 2009 7:58 AM Subject: [digitalradio] Windows Vista for digital mode soundcard applications ? I am in the market for a new PC to be used in my shack. I have found a few good deals, some with Vista as the OS. There are some with XP but I was wondering about a switch to Vista. My main applications would be Ham Radio Deluxe, Multipsk, FL-Digi, DX Lab , Microham device router, PC-ALE, and WSJT. Anyone know if any of these applications have issues with Vista ?
Re: [digitalradio] Windows Vista for digital mode soundcard applications ?
Andrew O'Brien wrote: I am in the market for a new PC to be used in my shack. I have found a few good deals, some with Vista as the OS. There are some with XP but I was wondering about a switch to Vista. My main applications would be Ham Radio Deluxe, Multipsk, FL-Digi, DX Lab , Microham device router, PC-ALE, and WSJT. Anyone know if any of these applications have issues with Vista ? Hi Andy, I've been using several of those programs on my Vista laptop. I've used HRD(+DM780), fldigi, most of the DXLab suite and WSJT with no issues so far. Hope that helps and 73, Sean - VA5LF
Re: [digitalradio] Windows Vista for digital mode soundcard applications ?
W6IDS wrote: The only other issue I did have was a lack of backward compatibility with PK-232 software, XPwin, that I used on an older XP computer before it crashed three months ago, or so. I found a program that helped with XP and some DOS programs, but I don't know if it would work OK in Vista: DOSBox. You could Google for it and find out if it may help. 73, Jose, CO2JA VI Conferencia Internacional de Energía Renovable, Ahorro de Energía y Educación Energética 9 - 12 de Junio 2009, Palacio de las Convenciones ...Por una cultura energética sustentable www.ciercuba.com
RE: [digitalradio] Windows Vista for digital mode soundcard applications ?
DXLab applications work fine on Vista as long as you install and run while logged into the account named Administrator. See http://www.dxlabsuite.com/dxlabwiki/InstallVista 73, Dave, AA6YQ -Original Message- From: digitalradio@yahoogroups.com [mailto:digitalra...@yahoogroups.com]on Behalf Of Andrew O'Brien Sent: Tuesday, February 03, 2009 7:58 AM To: digitalradio@yahoogroups.com Subject: [digitalradio] Windows Vista for digital mode soundcard applications ? I am in the market for a new PC to be used in my shack. I have found a few good deals, some with Vista as the OS. There are some with XP but I was wondering about a switch to Vista. My main applications would be Ham Radio Deluxe, Multipsk, FL-Digi, DX Lab , Microham device router, PC-ALE, and WSJT. Anyone know if any of these applications have issues with Vista ?
Re: [digitalradio] Windows Vista for digital mode soundcard applications ?
Thoughts on Vista and other OS's: Several years ago, I took a chance and bought an HP Pavilion a1730n tower with Vista. It is fairly powerful with AMD 4600+, reasonable nVidia video chipset and a couple Gig of RAM. My plan was to use Linux if it did not pan out. What happened was actually the reverse since Linux proved to be quite disappointing with my hardware. Since there were programs that did not run correctly or at all on Vista, particularly some of my ham programs, I left them on my other computer, a lesser emachines tower that is shared with peripherals using a KVM switch. As you surely have heard, the common wisdom is that Vista is a terrible operating system which everyone dislikes. The reality is a bit different when viewed from the middle path and must be compared with alternatives: - Initially, there were some annoying problems, but the ham programs with active developers were able to get their software to work well with Vista and some even discovered a flaw in Vista from my experience. After SP1, things have been quite good now. - Contrary to claims I hear from people who likely have no clue about and who don't even use Vista, I did not find it to crash at any time. Actually, I don't recall XP ever doing that either, HI. - It has increased security that is annoying to some because it makes you have to enter passwords at times in order for programs to be installed or file manipulation. Similar to Linux et al. - Microsoft recommends not running in Administrator for most activities which greatly increases security, similar to Linux et al. - Unrealistic expectation by Microsoft that all new computers will be much more powerful, but Moore's Law seems to have reached the end of the doubling of computer power every 18 months or so. There are some bottlenecks such as reading and moving files that I find barely tolerable. This may be fixed in Win 7, but I don't know for sure. - All my ham programs run well on Vista, but you may have a legacy application that has no support to upgrade to work on Vista and that should be taken into consideration. I tend to prefer the way the sound interface works. XP was absolutely terrible with a non-intuitive screen to switch between incoming and outgoing streams. - Because of the (mis)perceptions about Vista, Microsoft has pushed very hard to develop the updated Windows 7 version. The reviews on the beta have been surprisingly good. They may risk reducing (optional) security with the change to the UAC, but you can still have Vista level protection if you choose it. Win7 appears to be a Vista Lite but I don't know if they removed the DRM control which I consider to be extremely unwise on the part of Microsoft. With the discontinuance of MP3 DRM in the past few weeks, maybe we will see some reduction in DRM overall, but make no mistake, DRM has actually increased security problems due to DRM exploits from from trojans. The best thing to do is get this absolutely insane crap out of any OS. But overall, Vista is one of the most satisfying OS's that I have personally used. I have used computers for many years beginning with Commodores and Apple //e and then MS-DOS, Windows 2.11, through to the present and including a number of Linux variants. If you can possibly hold off (6 months?), you might want to wait until they have a deal where you can buy a Vista machine, but you get a free copy of Win7 when it becomes available. The new information on upgrades makes it look like it will be very easy for Vista users to do this via the internet in a few minutes. Need a clean install for XP though: http://www.winsupersite.com/win7/win7_skus.asp 73, Rick, KV9U Andrew O'Brien wrote: I am in the market for a new PC to be used in my shack. I have found a few good deals, some with Vista as the OS. There are some with XP but I was wondering about a switch to Vista. My main applications would be Ham Radio Deluxe, Multipsk, FL-Digi, DX Lab , Microham device router, PC-ALE, and WSJT. Anyone know if any of these applications have issues with Vista ?
[digitalradio] Airlink Express Update
Hi guys just a quickie to say that Alex KR1ST is about to release version 1.7.1.3. Developed from the ground up for Vista, and of course compatability with XP etc this is a very good basic software and worthy of recognitionin my humble opinion :-). This version of Airlink Express is a complete rewrite of the application in C#. Added: - TX/RX switching through CAT commands for all supported radios (this eliminates the need for a separate comport and interface for PTT) - RTS Handshake option for FT-2000/9000/950/450 - CAT support for FT-2000/FT-950/FT-450/FTdx9000 support - CAT support for Elecraft K2 and K3 - CAT support for Kenwood radios - TX/RX window clear button on the toolbar - option to show the tone frequency or actual RF frequency (if CAT turned on) on the waterfall and spectrum view - checkmark next to the callsign field that will indicate if you have worked a station before - partial log export - option to use left, right or both channels on the input Fixed: - small logging error when an empty entry gets deleted - audio issues on certain Compaq laptops that have no electronic volume control (no mixer elements) - exporting complex callsigns - when a comport gets removed from a computer dynamically (or in between sessions) the program will resort to a comport setting of None - same for comport settings in rig control - switching between letters and figures in FSK mode Changed: - change the default RST to something else than 599 - log window can now stay open continuously - the repeat interval so one can never enter a blank interval time - refined automatic callsign recognition - the position of the seperation bar between the RX and TX window and between the waterfall and spectrum view will now be saved between sessions See http://www.airlinkexpress.org Hope you enjoy. Cheers Dave G3VFP
Re: [digitalradio] Windows Vista for digital mode soundcard applications ?
Hi, If you wait until June (or July?) to buy a new PC with Vista installed, you will get a free upgrade to Windows 7, which will replace Vista later this year. If you buy now, the upgrade is not free. Just something else to chew on b4 making your decision about a new computer. 73 Buddy WB4M - Original Message - From: Andrew O'Brien k3uka...@gmail.com To: digitalradio@yahoogroups.com Sent: Tuesday, February 03, 2009 7:58 AM Subject: [digitalradio] Windows Vista for digital mode soundcard applications ? I am in the market for a new PC to be used in my shack. I have found a few good deals, some with Vista as the OS. There are some with XP but I was wondering about a switch to Vista. My main applications would be Ham Radio Deluxe, Multipsk, FL-Digi, DX Lab , Microham device router, PC-ALE, and WSJT. Anyone know if any of these applications have issues with Vista ? Announce your digital presence via our Interactive Sked Page at http://www.obriensweb.com/sked Yahoo! Groups Links
