[digitalradio] Digital Voice update #2 - programmers wanted - codec2 and the G3PLX modem
All, I received an email from Peter Martinez today regarding the new codec developed by Dave Rowe. I had asked him if it was possible to use it in one of the digital voice applications and he explained that the modem, which was originally designed by Peter for a different voice codec, would have to be modified for it to work with Dave's codec. He said that he would not be able to take this on at the moment because of other obligations, but he did mention that he would pass along the know-how to anyone who would like to try writing a modem for Dave's codec based on Peter's own FDM design. This is how Cesco, HB9TLK re-engineered Peter's modem to work with a slower 1400 bps codec for the digital voice program FDMDV and how Erik, VK4RS developed EasyPal Unfortunately, we haven't been able to get in touch with Cesco for some time now so it may be necessary to have someone come up with a new digital voice application - something along the lines of WinDRM / FDMDV. If anyone is interested in taking on these projects, please contact me direct and I will put you in touch with Peter. Thanks, Tony -K2MO
Re: [digitalradio] Digital Voice update #2 - programmers wanted - codec2 and the G3PLX modem
I wonder if Patrick would be interested ??? Andy K3UK On Sat, Aug 28, 2010 at 3:26 AM, Tony d...@optonline.net wrote: All, I received an email from Peter Martinez today regarding the new codec developed by Dave Rowe. I had asked him if it was possible to use it in one of the digital voice applications and he explained that the modem, which was originally designed by Peter for a different voice codec, would have to be modified for it to work with Dave's codec. He said that he would not be able to take this on at the moment because of other obligations, but he did mention that he would pass along the know-how to anyone who would like to try writing a modem for Dave's codec based on Peter's own FDM design. This is how Cesco, HB9TLK re-engineered Peter's modem to work with a slower 1400 bps codec for the digital voice program FDMDV and how Erik, VK4RS developed EasyPal Unfortunately, we haven't been able to get in touch with Cesco for some time now so it may be necessary to have someone come up with a new digital voice application - something along the lines of WinDRM / FDMDV. If anyone is interested in taking on these projects, please contact me direct and I will put you in touch with Peter. Thanks, Tony -K2MO
Re: [digitalradio] Digital Voice update #2 - programmers wanted - codec2 and the G3PLX modem
Hello Andy, I think it would be an interesting subject. However, if such mode was created I think it might be rather be conceived in some public way, so that the detailed specifications be public and written by specialists of this specific matter (I don't belong to these specialists). Then, it would be (relatively) easy to carry these detailed specifications to multimode programs, which would be compatible on this particular mode. Now, I think the Cesco program (FDMDV) exists and it worked well (at least with the first Codec), so... 73 Patrick - Original Message - From: Andy obrien To: digitalradio@yahoogroups.com Sent: Saturday, August 28, 2010 9:34 AM Subject: Re: [digitalradio] Digital Voice update #2 - programmers wanted - codec2 and the G3PLX modem I wonder if Patrick would be interested ??? Andy K3UK On Sat, Aug 28, 2010 at 3:26 AM, Tony d...@optonline.net wrote: All, I received an email from Peter Martinez today regarding the new codec developed by Dave Rowe. I had asked him if it was possible to use it in one of the digital voice applications and he explained that the modem, which was originally designed by Peter for a different voice codec, would have to be modified for it to work with Dave's codec. He said that he would not be able to take this on at the moment because of other obligations, but he did mention that he would pass along the know-how to anyone who would like to try writing a modem for Dave's codec based on Peter's own FDM design. This is how Cesco, HB9TLK re-engineered Peter's modem to work with a slower 1400 bps codec for the digital voice program FDMDV and how Erik, VK4RS developed EasyPal Unfortunately, we haven't been able to get in touch with Cesco for some time now so it may be necessary to have someone come up with a new digital voice application - something along the lines of WinDRM / FDMDV. If anyone is interested in taking on these projects, please contact me direct and I will put you in touch with Peter. Thanks, Tony -K2MO
Re: [digitalradio] Digital Voice update #2 - programmers wanted - codec2 and the G3PLX modem
Hi all, Talking of documentation and specs. I am still pretty new to radio-amateurism (just started again after more then 17 years) one of the first things I noticed when I started exploring all these digital modes, is that it is pretty difficult to get specifications and exact documentation of them all. If I look at the culture of the internet and opensource (which is my profesional background), I'm still surprised that there is not central repository of all these digital modes. In the internet-world, there is the IETF (internet Engineering Task Force) and there are RFCs. Almost all protocols are published as a RFC, for everybody to read; usually at the same time when applications and tools using it appear; and the IETF make sure there is a consistent wording and quality in these documents. This means that everbody who is interested in a protocol or some technology can just download the specs and read them. Either I have looked good enout, but AFAIK, in the ham-world; that does not exist at all. I've been searching all over the web to find information on how all these digital modes really work and you really need to scrap information together for all over the web (without any certainty what is now the correct way). I do not understand why -say- the IARU does not does this. I'm not say they should endorce any standard of any technology. But, the way I see it, it should really help if they would provide a platform so that everybody who comes up with a new technology or a protocol can document it (in a way consistent to other RFCs and place it in a central repostitory so that everybody can read it. That would help a lot, clear up inconsistencies between programs and help developers to write code. Cheerio! Kr. Bonne. Op 28-08-10 11:17, Patrick Lindecker schreef: Hello Andy, I think it would be an interesting subject. However, if such mode was created I think it might be rather be conceived in some public way, so that the _detailed _specifications be public and written by specialists of this specific matter (I don't belong to these specialists). Then, it would be (relatively) easy to carry these detailed specifications to multimode programs, which would be compatible on this particular mode. Now, I think the Cesco program (FDMDV) exists and it worked well (at least with the first Codec), so... 73 Patrick - Original Message - *From:* Andy obrien mailto:k3uka...@gmail.com *To:* digitalradio@yahoogroups.com mailto:digitalradio@yahoogroups.com *Sent:* Saturday, August 28, 2010 9:34 AM *Subject:* Re: [digitalradio] Digital Voice update #2 - programmers wanted - codec2 and the G3PLX modem I wonder if Patrick would be interested ??? Andy K3UK On Sat, Aug 28, 2010 at 3:26 AM, Tony d...@optonline.net mailto:d...@optonline.net wrote: All, I received an email from Peter Martinez today regarding the new codec developed by Dave Rowe. I had asked him if it was possible to use it in one of the digital voice applications and he explained that the modem, which was originally designed by Peter for a different voice codec, would have to be modified for it to work with Dave's codec. He said that he would not be able to take this on at the moment because of other obligations, but he did mention that he would pass along the know-how to anyone who would like to try writing a modem for Dave's codec based on Peter's own FDM design. This is how Cesco, HB9TLK re-engineered Peter's modem to work with a slower 1400 bps codec for the digital voice program FDMDV and how Erik, VK4RS developed EasyPal Unfortunately, we haven't been able to get in touch with Cesco for some time now so it may be necessary to have someone come up with a new digital voice application - something along the lines of WinDRM / FDMDV. If anyone is interested in taking on these projects, please contact me direct and I will put you in touch with Peter. Thanks, Tony -K2MO
Re: [digitalradio] Digital Voice update #2 - programmers wanted - codec2 and the G3PLX modem
Speaking of digital voice I had a nice but short QSO today while driving home from a event I had been to. I was really shocked because out of the clear blue I had been listening to VHF when the HF radio started talking. So I just had to answer his DV CQ. John, W0JAB
[digitalradio] New
I would like to try APRS, but have no idea where to start. I now have a GPS unit from TomTom. What else do I need and where do I start? Thank you, Dan Walker WD5CND
Re: [digitalradio] New
You don't specifically NEED a GPS unit for APRS unless you plan on operating mobile. APRS uses VHF, HF, or both. Which do you plan? If mobile, most use VHF.. 2 meters. On HF is is mainly 30M but there is some HF APRS on 20M too. Most common APRS methods use packet radio. 300 baud packet on HF and 1200 baud packet on 30M . There is some APRS using PSK but that is not as common. So, to start, we need to figure out how you intend to generate the packet tones and decode the received signals . If mobile , we need to figure out if you have one of the special radios that has a TNC built in. or are you going to need one like the small TNC-X (designed by my neighbour a few blocks away). Not mobile, you can use a soundcard based application , like Multpsk, to generate the Packet tones in APRS mode. Many GPS units do not work with ham radio and APRS. Only the higher-end GPS units tend to come with data output presented in a manner than can be linked to a radio. So don't assume your Tom Tom will do what u want unless it outputs data via NMEA So, tell me more about what you have in mind ? Andy K3UK On Sat, Aug 28, 2010 at 8:18 PM, Dan wd5...@yahoo.com wrote: I would like to try APRS, but have no idea where to start. I now have a GPS unit from TomTom. What else do I need and where do I start? Thank you, Dan Walker WD5CND
[digitalradio] CB/HAM RADIO used 4 survival explained in article.
Hi, here is the link to the site. http://www.todayssurvival.com/ I was surprised to see that they listed using CB HAM radio for survival in the contents of the current audio production of their show. They have a list of articles archived easily accessed right on their home page. They use MP3 audio do podcasts. Loads of neat info on the site. Enjoy. 73/75 de ka9jwx, Paul Lewis Webster BPL BAD, KILL BPL, KILL BPL!! SKCC #5322 John 3:16 Proud member of the; ARRL Handihams LiveFreeUSA NRA (If its good enough for Glen Beck Sarah Palin, its good enough for me!) 60 Plus (even tho I am younger then 60) Long:-87.334L (-87*20'3W) Lat:41.4967N (41*29'48N) EN61HL Merrillville, Indiana, 46410-3503, USA ;-)
Re: [digitalradio] New
Just my two cents worth.. About QRV APRS . I think nobody use it now. It possible to add APRS logo to your qrzcom page and when you click on it show your position You can see sample of use it in the few pages now, for example click to: http://www.qrz.com/db/k8waw or http://www.qrz.com/db/do3nn You wrote : I would like to try APRS, but have no idea where to start. I now have a GPS unit from TomTom. What else do I need and where do I start? Thank you, Dan Walker WD5CND Best regards 73 Vlad UA6JD web design in www.qrz.com Sample and download books on http://www.qrz.com/db/Ua6jd
Re: [digitalradio] New
Plan on orerating mobile have Kenwood TH-F6A and my Tom Tom is not the highend unit I thought it was. TH-F6A says it has 1200bps modem for VHF. How do I put it all togather? Not even sure what I can do with APRS. Been off the air for a while. Dan --- On Sat, 8/28/10, Andy obrien k3uka...@gmail.com wrote: From: Andy obrien k3uka...@gmail.com Subject: Re: [digitalradio] New To: digitalradio@yahoogroups.com Date: Saturday, August 28, 2010, 7:45 PM You don't specifically NEED a GPS unit for APRS unless you plan on operating mobile. APRS uses VHF, HF, or both. Which do you plan? If mobile, most use VHF.. 2 meters. On HF is is mainly 30M but there is some HF APRS on 20M too. Most common APRS methods use packet radio. 300 baud packet on HF and 1200 baud packet on 30M . There is some APRS using PSK but that is not as common. So, to start, we need to figure out how you intend to generate the packet tones and decode the received signals . If mobile , we need to figure out if you have one of the special radios that has a TNC built in. or are you going to need one like the small TNC-X (designed by my neighbour a few blocks away). Not mobile, you can use a soundcard based application , like Multpsk, to generate the Packet tones in APRS mode. Many GPS units do not work with ham radio and APRS. Only the higher-end GPS units tend to come with data output presented in a manner than can be linked to a radio. So don't assume your Tom Tom will do what u want unless it outputs data via NMEA So, tell me more about what you have in mind ? Andy K3UK On Sat, Aug 28, 2010 at 8:18 PM, Dan wd5...@yahoo.com wrote: I would like to try APRS, but have no idea where to start. I now have a GPS unit from TomTom. What else do I need and where do I start? Thank you, Dan Walker WD5CND
Re: [digitalradio] New
Thank You, Dan --- On Sat, 8/28/10, Vlad_UA6JD jt...@mail-on.us wrote: From: Vlad_UA6JD jt...@mail-on.us Subject: Re: [digitalradio] New To: Dan digitalradio@yahoogroups.com Date: Saturday, August 28, 2010, 10:01 PM Just my two cents worth.. About QRV APRS . I think nobody use it now. It possible to add APRS logo to your qrzcom page and when you click on it show your position You can see sample of use it in the few pages now, for example click to: http://www.qrz.com/db/k8waw or http://www.qrz.com/db/do3nn You wrote : I would like to try APRS, but have no idea where to start. I now have a GPS unit from TomTom. What else do I need and where do I start? Thank you, Dan Walker WD5CND Best regards 73 Vlad UA6JD web design in www.qrz.com Sample and download books on http://www.qrz.com/db/Ua6jd
Re[2]: [digitalradio] New
Hello, Dan. If you like samples - let me know and I will design qrzcom page for you with APRS clickable logo in. You wrote : Thank You, Dan --- On Sat, 8/28/10, Vlad_UA6JD jt...@mail-on.us wrote: From: Vlad_UA6JD jt...@mail-on.us Subject: Re: [digitalradio] New To: Dan digitalradio@yahoogroups.com Date: Saturday, August 28, 2010, 10:01 PM Just my two cents worth.. About QRV APRS . I think nobody use it now. It possible to add APRS logo to your qrzcom page and when you click on it show your position You can see sample of use it in the few pages now, for example click to: http://www.qrz.com/db/k8waw or http://www.qrz.com/db/do3nn You wrote : I would like to try APRS, but have no idea where to start. I now have a GPS unit from TomTom. What else do I need and where do I start? Thank you, Dan Walker WD5CND Best regards 73 Vlad UA6JD web design in www.qrz.com Sample and download books on http://www.qrz.com/db/Ua6jd Best regards 73 Vlad UA6JD web design in www.qrz.com Sample and download books on http://www.qrz.com/db/Ua6jd
