[digitalradio] Re: ALE ... connecting and conversing
Russell, As several others will likely point out, conversing with standard ALE can be achieved easily . I am exaggerating a point but ALE's orginal intent for amateur use was to use ALE to establish a contact and then SWITCH to a mode best suited for conditions at the time. Thus you can use ALE to scan and find a station and then switch to...say, PSK31 or Olivia, CW, or even voice. Using the ALE software available (PC -ALE or Multipsk)you can converse with the other station via some formats standard to ALE , they are AMD, DTM , and DBM. Most use AMD at first and switch to DTM if conditions require it. The experience of most is that these formats, especially in PC-ALE, are not very robust due to sound card calibration issues. I urge ALE users to use ALE for the Automatic Link Establishment and then switch to better communication tools (you mad need to QSY to the correct band segments too). If you make a link with ALE, then you can almost always expect that PSK31, MFSK16, DominoEX, CW, and Olivia will work well on that same band. I'm waiting for that next version of ALE software that makes the link and instead of simple AMD /DTM options, the sofware would use SNR information established while making the link and then display digital modes suitable within that SNR. Then, up would pop an options window that lists PSK, MFSK16, etc, etc. Multipsk provides much of this already, albeit manually. I will repeat my most frequent thoughts about ALE... there is nothing better for establishing a link on the amateur bands and there is nothing worse (than AMD/DTM with common PC souncards ) for conversing. Andy K3UK
Re: [digitalradio] Re: ALE ... connecting and conversing
Tnx Andy for your input that helps alot cul 73 Russell NC5O = IN GOD WE TRUST ! = Russell Blair NC5O Skype-Russell Blair Hell Field #300 DRCC #55 --- On Tue, 5/13/08, Andrew O'Brien [EMAIL PROTECTED] wrote: From: Andrew O'Brien [EMAIL PROTECTED] Subject: [digitalradio] Re: ALE ... connecting and conversing To: digitalradio@yahoogroups.com Date: Tuesday, May 13, 2008, 3:48 AM Russell, As several others will likely point out, conversing with standard ALE can be achieved easily . I am exaggerating a point but ALE's orginal intent for amateur use was to use ALE to establish a contact and then SWITCH to a mode best suited for conditions at the time. Thus you can use ALE to scan and find a station and then switch to...say, PSK31 or Olivia, CW, or even voice. Using the ALE software available (PC -ALE or Multipsk)you can converse with the other station via some formats standard to ALE , they are AMD, DTM , and DBM. Most use AMD at first and switch to DTM if conditions require it. The experience of most is that these formats, especially in PC-ALE, are not very robust due to sound card calibration issues. I urge ALE users to use ALE for the Automatic Link Establishment and then switch to better communication tools (you mad need to QSY to the correct band segments too). If you make a link with ALE, then you can almost always expect that PSK31, MFSK16, DominoEX, CW, and Olivia will work well on that same band. I'm waiting for that next version of ALE software that makes the link and instead of simple AMD /DTM options, the sofware would use SNR information established while making the link and then display digital modes suitable within that SNR. Then, up would pop an options window that lists PSK, MFSK16, etc, etc. Multipsk provides much of this already, albeit manually. I will repeat my most frequent thoughts about ALE... there is nothing better for establishing a link on the amateur bands and there is nothing worse (than AMD/DTM with common PC souncards ) for conversing. Andy K3UK Be a better friend, newshound, and know-it-all with Yahoo! Mobile. Try it now. http://mobile.yahoo.com/;_ylt=Ahu06i62sR8HDtDypao8Wcj9tAcJ
[digitalradio] TAPR Dayton Hamvention Activities - HPSDR
-Original Message- From: Steven Bible [EMAIL PROTECTED] To: [EMAIL PROTECTED] [EMAIL PROTECTED] Sent: Tue, 13 May 2008 8:49 am Subject: [tapr-announce] TAPR Dayton Hamvention Activities - HPSDR TAPR DIGITAL Friday, May 17, 2008 9:15 AM - 10:45 AM Forum Room 1 Speaker John Ackermann, N8UR and Phil Harman, VK6APH Design Considerations for an HPSDR Time Reference Speaker Steve Bible, N7HPR How to Submit a Project for Consideration by TAPR Speaker Steve Bible, N7HPR and Scott Cowling, WA2DFI Manufacturing for the HPSDR Community: An Update on Penelope and Mercury Speaker Mel Whitten, K0PFX Update on Digital Voice Speaker Matt Ettus, N2MJI USRP 2008 Dayton SDR Forum Saturday May 17 2008 9:00 A.M. 11:30 A.M. Forum Room 1 Moderator Eric Ellison AA4SW The phenomenal Software Defined Radio paradigm shift continues with a significant number of ³off the shelf¹ as well as amateur hardware offerings. Many programmers are fueling the fire! Come hear the leaders in this movement describe the vast potential of this rapidly advancing technology on ham radio. An Atlas Motherboard, and Ozymandias USB computer interface, the basic building blocks of a High Performance Software Defined Radio will be given away as a door prize, at the end of the session. You must be present to win. Scotty Cowling WA2DFI Scotty Cowling, WA2DFI, was first licensed in 1967 and has been continuously active since that time. He is active in the Maricopa County Emergency Communications Group (MGECG) in Arizona, mostly implementing APRS networks for public service events. Scotty is active while mobile on HF CW and on APRS. Scotty is an advisor for Explorer Post 599, a BSA affiliated ham club for teens in the Phoenix area. Scotty has been involved in the HPSDR project for the last 2 years, and currently serves on the TAPR Board of Directors. He is active in the production of HPSDR components and with other TAPR projects. Hands-on SDR Projects Are you interested in Software Defined Radio but don¹t know where to start? Are you a dyed-in-the-wool experimenter looking for an exciting new project? From the $10 Softrock Software Defined transceiver to the six-board modular High-Performance Software Defined Radio (HPSDR) project, new technology is here today and waiting for you! Scotty Cowling, WA2DFI, leads the production team at TAPR and is helping to make low cost HPSDR project components available to designers and experimenters. He will give you an overview of hands-on SDR projects and help you jump-start your involvement in SDR projects that are the most exciting thing to happen in ham radio in recent years. Phil Harman G3WXO, VK6APH Phil Harman, VK6APH, has held a ham license for over 40 years. For much of this time he has worked on leading edge RF techniques related to receivers and transmitters. Phil's current passion is the development of fully digital HF radios. Phil co-writes the Software Defined Radio column in the RSGB Radio Communications journal and also co-authored the SDR chapter in the latest RSGB Handbook. Fully Digital HF Radios Talk Overview Do you remember vinyl records, 8 track tape recorders, Beta video tapes and Super 8 cine? What has happened to them? They have all been superseded with digital technologies that provide superior quality, higher performance and lower cost than the original. We are just seeing the start of a new wave of HF radios that use digital technologies directly at the antenna socket. Are these new radios going to be better, faster, smarter and cheaper than the analogue radios we are use to? Phil Harman, VK6APH, has been helping design, build and operate this new technology and will explain how they work and, more importantly, if they will live up to our expectations. Frank Brickle, AB2KT Frank Brickle, AB2KT was first licensed in the early 60's, went inactive for a long time, but started once again to foul the bands in 2000. He has long maintained a dual career as a musician a composer, with a PhD from Princeton in Music and as a technologist, working in computer science, cryptomathematics, and the strange area where radios and computers meet. He is a member of the ARRL SDR Working Group, the AMSAT Eagle and Suitsat II design teams, and has been a frequent presenter at recent TAPR and AMSAT conferences. Technology notwithstanding, you're likely to meet him on the air late at night on 40 or 80 CW. Talk Overview SDR in the Clouds Hams are becoming very interested in using their radios remotely. With Software Defined Radio, however, it's suddenly a lot less important where all the pieces of the radio system are located physically. In this talk we will discuss how to use the new SDR technology to build a remote system that's tailored to high performance in your area of interest DXing, HF contesting, weak-signal VHF, or EMCOMM. ___ tapr-announce mailing list
[digitalradio] MultiPSK 4.8 doesn't decode all that great on Olivia ?
Hello to all, Here is an extract of the answer I did in the Multipsk group plus some other results. I have also ran into at least 8 different stations running MultiPSK 4.7 or newer that I can't decode UNLESS I run MultiPSK 4.7 or later. I tried here generating Olivia 32-1000 towards an old Multipsk version and Mixw...no problem. This is logical as there was no modification on Olivia for some versions (however a regression error was always possible but there was no such error). I decided to do a side-by-side receiving/decoding test with DM780 software (1806 beta) and MultiPSK 4.8 and found that DM780 consistently could decode very weak signals 80-90 pct. copy that MultiPSK would only get 10pct or less of. I was surprised - but did I tried here comparing Mixw, Multipsk and OliviaAid with a very noisy transmission: the decodings are more or less equivalent (Multipsk being slightly better and OliviaAid slightly worse with a relatively important decoding delay). The sound card speed calibration was the same for every softs. Note: OliviaAid is worth for DM780 and Fldigi. The results are the following (with a signal at -13 dB of S/N Gaussian which is the limit for Olivia 32-1000 decoding): * OliviaAid: 120 characters decoded, * Mixw: 164 characters decoded, * Multipsk: 208 characters decoded. However, I tested on Gaussian noise, when real conditions could be very different from a Gaussian noise (QSB was not simulated for example) and so the results could be different. I think the decoding's problem of Gary is linked to the sound card speed calibration (button Sampling freq. and follow the instructions). If it keeps on failing, Gary must check that the button Freq. search is pushed (to have an equivalent to Mixw or OliviaAid) . If it keeps on failing, let's Gary contact me or better the Multipsk group. A good thing would be to send me a record file (at 11025 samples/sec, 8 bits, mono) recording a phase when Multipsk decodes badly. I will check why. I tested previously thanks to the Multipsk group the 48 KHz sampling speed (adding a provisional measure of 48 KHz sampling speed). It is in general very good (my poor on-board sound card becomes suddenly excellent), but it is, unfortunatly, not a general case (I hoped that it was a general case to progressively switch to 48 KHz). special soundcard alignment that I haven't already done - too many As indicated above, it is true that with a 48 KHz sampling frequency the probability of an immediate good result is perhaps of 80 or 90 % but unfortunatly it is not 100 % so, in all cases, it is necessary to calibrate his sound card. With Multipsk, it is automatic, it takes 2x3 mn, so I don't think it could really be a big problem. And it is one time (you can control from time to time, in case of). So in any case, it is important to calibrate the sound card, moreover in Olivia. This because it is a MFSK mode with a lot of possible carriers (32 in the standard mode), so you must not to mix one carrier with another carrier or simply have a shift which makes that you assess your carriers (through a FFT or an inter-correlation) at a bad location. The other issue is the synchronization. You must synchronize on the right moment. In general you have a capacity of auto-synchronization (about +/- 1% in Multipsk (and also about the same for Mixw as far as I see) through a digital PLL) but for the best performance it is of course better not to have to modify the standard speed and to be just at the right speed. So if for a PSK or a RTTY transmission, you could have a certain tolerance with a slow degradation of the performance around the real sound card sampling speed, in Olivia you have a quick degradation of the performance. This problem of soundcard alignment is extreme with MT63 which works with 64 carriers... 73 Patrick - Original Message - From: Jose A. Amador To: [EMAIL PROTECTED] ; digitalradio@yahoogroups.com Sent: Tuesday, May 13, 2008 4:56 AM Subject: [digitalradio] Re: [olivia] Re: MultiPSK 4.8 doesn't decode all that great on Olivia garylinnrobinson wrote: I didn't do my comparison's on MixW and Olivia Aid - I did them with DM780 and just recently FLDigi on a separate computer but same sound feed from transceiver since FLDigi is on Linux. Same results. You can say it's just Gary but I don't believe it. And it is doesn't apply to PSK or RTTY they work abt the same on all the progs. If I have to own a special computer or special soundcard or do some special soundcard alignment that I haven't already done - too many hoops for the regular user let alone a guy who has worked in the computer industry as a tech and programmer as I have. There are several factors to consider in order to achieve a fair relative evaluation, and I am sure you know with your claimed background. First, with the data you have at hand could you achieve a quantitative
[digitalradio] Re: help DSP-2232
Many Thanks to Andy My Question Is Wiring and Command, Tx Level Adjustment image src=http://hl3ahq.karl.or.kr/zb/data/digital/dsp_2232_Q.jpg; Please reply to me about Pin arrangement and command code... 73 de hl2pcu Kim --- In digitalradio@yahoogroups.com, hl2pcu [EMAIL PROTECTED] wrote: Deer OM I got one old model tnc DSP-2232.. It is very powerful function... But No Manual make me hard... With PK-900 Manual, Hardly I Succeeded RTTY 1200 Packet... Pse Inform to me ... SAT Updown wiring Method Operationg Command.. and right side variable volume function...etc Many tnx de hl2pcu Kim
[digitalradio] add picture : help DSP-2232
http://hl3ahq.karl.or.kr/zb/data/digital/dsp_2232_Q.jpg image src=http://hl3ahq.karl.or.kr/zb/data/digital/dsp_2232_Q.jpg; --- In digitalradio@yahoogroups.com, hl2pcu [EMAIL PROTECTED] wrote: Deer OM I got one old model tnc DSP-2232.. It is very powerful function... But No Manual make me hard... With PK-900 Manual, Hardly I Succeeded RTTY 1200 Packet... Pse Inform to me ... SAT Updown wiring Method Operationg Command.. and right side variable volume function...etc Many tnx de hl2pcu Kim
[digitalradio] Re : Re: help DSP-2232
image src=http://hl3ahq.karl.or.kr/zb/data/digital/dsp_2232_Q.jpg; --- In digitalradio@yahoogroups.com, Andrew O'Brien [EMAIL PROTECTED] wrote: --- In digitalradio@yahoogroups.com, hl2pcu hl2pcu@ wrote: Deer OM I got one old model tnc DSP-2232.. It is very powerful function... But No Manual make me hard... With PK-900 Manual, Hardly I Succeeded RTTY 1200 Packet... Pse Inform to me ... SAT Updown wiring Method Operationg Command.. and right side variable volume function...etc Many tnx de hl2pcu Kim Kim, have you tried the DSP-2232 with PK Term ? http://files.cssincorp.com/pkterm/pk37506.zip That may help. Andy K3UK
[digitalradio] Signal on 3850
A friend told me to lisen on 3850 lsb +- a kc or two. There is some digital type signal there. Does anyone know what it is and where it is comming from.
Re: [digitalradio] Signal on 3850
Ummm, where are you? I can't hear anything here in VK. John de VK2XGJ Stop worrying about Life You'll never get out of it alive - Original Message - From: Ralph Mowery [EMAIL PROTECTED] To: digitalradio@yahoogroups.com Sent: Wednesday, May 14, 2008 12:23 PM Subject: [digitalradio] Signal on 3850 A friend told me to lisen on 3850 lsb +- a kc or two. There is some digital type signal there. Does anyone know what it is and where it is comming from. Announce your digital presence via our Interactive Sked Page at http://www.obriensweb.com/sked Check our other Yahoo Groups http://groups.yahoo.com/group/dxlist/ http://groups.yahoo.com/group/contesting http://groups.yahoo.com/group/themixwgroup Yahoo! Groups Links No virus found in this incoming message. Checked by AVG. Version: 8.0.100 / Virus Database: 269.23.16/1431 - Release Date: 5/13/2008 7:55 PM
Re: [digitalradio] Signal on 3850
I dont here it in Calif.? a very strong voice signal on 3852 Joe WB6AGR -Original Message- From: John Simon [EMAIL PROTECTED] To: digitalradio@yahoogroups.com Sent: Tue, 13 May 2008 7:59 pm Subject: Re: [digitalradio] Signal on 3850 Ummm, where are you? I can't hear anything here in VK. John de VK2XGJ Stop worrying about Life You'll never get out of it alive - Original Message - From: Ralph Mowery [EMAIL PROTECTED] To: digitalradio@yahoogroups.com Sent: Wednesday, May 14, 2008 12:23 PM Subject: [digitalradio] Signal on 3850 A friend told me to lisen on 3850 lsb +- a kc or two. There is some digital type signal there. Does anyone know what it is and where it is comming from. Announce your digital presence via our Interactive Sked Page at http://www.obriensweb.com/sked Check our other Yahoo Groups http://groups.yahoo.com/group/dxlist/ http://groups.yahoo.com/group/contesting http://groups.yahoo.com/group/themixwgroup Yahoo! Groups Links -- No virus found in this incoming message. Checked by AVG. Version: 8.0.100 / Virus Database: 269.23.16/1431 - Release Date: 5/13/2008 7:55 PM
Re: [digitalradio] Ham Radio Deluxe 4.0 in time for Dayton
On Tuesday 13 May 2008 04:25:28 am Andrew O'Brien wrote: The next release of Ham Radio Deluxe and Digital Master 780 will be made for Dayton 2008 (May 16th - 18th). Kits will be available from the US Interface stand #556. Downloads available May 19th / 20th (after Dayton is finished). Thanks, Andrew. I've been following along with all of the beta's and it's very impressive. Good job! -- Waiting for sunspots.
