Re: [Flexradio] vhf/uhf digital modes and repeater operation
Another thing to think about is that AOR, with their Digital HF also uses the AMBE chip. I believe that it is knocked down to a lower transfer rate, but it is the same chip. So it could be possible to kill two birds with one stone with an AMBE implementation. http://www.aorusa.com/ard9800.html for details. -Original Message- From: Bob McGwier [mailto:rwmcgw...@gmail.com] Sent: Tuesday, June 02, 2009 6:36 PM To: Woodrick, Ed Cc: flexradio@flex-radio.biz Subject: Re: [Flexradio] vhf/uhf digital modes and repeater operation I believe that we should follow the route that Ed is suggesting, even as it sticks in my craw. We can buy a dongle for less than $125 depending on who you get it from and with how much support, etc. that will do the AMBE encoding and decoding. We can have open source D-Star but talk to this dongle and much more. I think we hold our nose and realize we are going to be interoperable with P25 services of first responders and paying much less than would otherwise be required to get D-Star. I am an idealist, or otherwise I would not have given away five years of effort to Flex and this community for NOT ONE SINGLE RED CENT outside of those things my employer wants me to do. Yet for the greater good, I believe in this case, we should compromise. When and if a new standard becomes available, and we can get it done open source GPL, we drop it in. Bob N4HY ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/
Re: [Flexradio] vhf/uhf digital modes and repeater operation
Sure, we'd all like everything to always be free. But that's not reality. DVSI has invested millions of dollars into the development of a state-of-the-art solution with AMBE. It is the successor to the IMBE chip that is used in the P25 protocol. It provides compression that is well beyond that of the open source solutions that exist today. And, even more appropriately, it fits in a handheld radio. But, if the Flex community doesn't want to do something that is currently being done with other VHF/UHF radios, then that is definitely their prerogative. Ed WA4YIH -Original Message- From: flexradio-boun...@flex-radio.biz [mailto:flexradio-boun...@flex-radio.biz] On Behalf Of Bill Tracey Sent: Monday, June 01, 2009 11:27 PM To: flexradio@flex-radio.biz Subject: Re: [Flexradio] vhf/uhf digital modes and repeater operation One could certainly do it, but is it not the start of the path to madness? Imagine if you needed a dongle for PSK31, one for RTTY, one for WSJT etc. Personally I'd rather to see the SDR community advance the Free (as in freedom) state of the art than support solutions that are implemented in hardware solely to protect a proprietary codec. Just one ham's opinion. Cheers, Bill (kd5tfd) At 07:55 PM 6/1/2009, Woodrick, Ed wrote: But it doesn't preclude the use of D-STAR. (and there is D-STAR data without voice) There's a number of efforts where the AMBE chip (a lot of state-of-art technology crammed into a little chip) is being used to decode and encode D-STAR signals in a manner completely consistent with the open source license. You just need to pass the digital data through the AMBE chip. And with the proper receiver modes, I see no reason why PowerSDR couldn't decode and encode the GMSK signal necessary. Ed WA4YIH ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/
Re: [Flexradio] vhf/uhf digital modes and repeater operation
Actually, it is a goal, and part of the success, of the open source SDR groups, that things are not done the way of the rest of the planet. There is plenty of room for those who, for example, wish recoup their investment in a proprietary CoDec and want to require everything to pass through it. There is also room for an experimental, collaborative group that is donating their talents and efforts for something that is open to many. Mike - AA8K Woodrick, Ed wrote: Sure, we'd all like everything to always be free. But that's not reality. DVSI has invested millions of dollars into the development of a state-of-the-art solution with AMBE. It is the successor to the IMBE chip that is used in the P25 protocol. It provides compression that is well beyond that of the open source solutions that exist today. And, even more appropriately, it fits in a handheld radio. But, if the Flex community doesn't want to do something that is currently being done with other VHF/UHF radios, then that is definitely their prerogative. Ed WA4YIH ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/
Re: [Flexradio] vhf/uhf digital modes and repeater operation
I believe that we should follow the route that Ed is suggesting, even as it sticks in my craw. We can buy a dongle for less than $125 depending on who you get it from and with how much support, etc. that will do the AMBE encoding and decoding. We can have open source D-Star but talk to this dongle and much more. I think we hold our nose and realize we are going to be interoperable with P25 services of first responders and paying much less than would otherwise be required to get D-Star. I am an idealist, or otherwise I would not have given away five years of effort to Flex and this community for NOT ONE SINGLE RED CENT outside of those things my employer wants me to do. Yet for the greater good, I believe in this case, we should compromise. When and if a new standard becomes available, and we can get it done open source GPL, we drop it in. Bob N4HY Woodrick, Ed wrote: Sure, we'd all like everything to always be free. But that's not reality. DVSI has invested millions of dollars into the development of a state-of-the-art solution with AMBE. It is the successor to the IMBE chip that is used in the P25 protocol. It provides compression that is well beyond that of the open source solutions that exist today. And, even more appropriately, it fits in a handheld radio. But, if the Flex community doesn't want to do something that is currently being done with other VHF/UHF radios, then that is definitely their prerogative. Ed WA4YIH -Original Message- From: flexradio-boun...@flex-radio.biz [mailto:flexradio-boun...@flex-radio.biz] On Behalf Of Bill Tracey Sent: Monday, June 01, 2009 11:27 PM To: flexradio@flex-radio.biz Subject: Re: [Flexradio] vhf/uhf digital modes and repeater operation One could certainly do it, but is it not the start of the path to madness? Imagine if you needed a dongle for PSK31, one for RTTY, one for WSJT etc. Personally I'd rather to see the SDR community advance the Free (as in freedom) state of the art than support solutions that are implemented in hardware solely to protect a proprietary codec. Just one ham's opinion. Cheers, Bill (kd5tfd) At 07:55 PM 6/1/2009, Woodrick, Ed wrote: But it doesn't preclude the use of D-STAR. (and there is D-STAR data without voice) There's a number of efforts where the AMBE chip (a lot of state-of-art technology crammed into a little chip) is being used to decode and encode D-STAR signals in a manner completely consistent with the open source license. You just need to pass the digital data through the AMBE chip. And with the proper receiver modes, I see no reason why PowerSDR couldn't decode and encode the GMSK signal necessary. Ed WA4YIH ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ -- (Co)Author: DttSP, Quiktrak, PowerSDR, GnuRadio Member: ARRL, AMSAT, AMSAT-DL, TAPR, Packrats, NJQRP, QRP ARCI, QCWA, FRC. You don't need to see the whole staircase, just take the first step., MLK. Twitter:rwmcgwier Active: Facebook,Myspace,LinkedIn ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/
Re: [Flexradio] vhf/uhf digital modes and repeater operation
I think we hold our nose and realize we are going to be interoperable with P25 services of first responders Unfortunately, D-Star is not compatible or interoperable with P25. The AMBE codec that is used for D-Star (almost always the AMBE-2020) will not decode P25 IMBE encoded transmissions. Sadly, I confirmed this (a) directly with DVSI, (b) by experiments done by a colleague who spent time with one of the plug-in D-Star decoders for the specific purpose of attempting P25 interoperability. It might be possible to have a codec plug in board that did both AMBE and IMBE, but the chip that's used in the inexpensive commodity AMBE decoder for D-Star does not do this. I do know that DVSI has a board-level product that will do P25 decoding, the VC-55-PR. Unfortunately, it's just a bit over $900 per board in small quantities. Peter K1PGV ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/
Re: [Flexradio] vhf/uhf digital modes and repeater operation
At 15:35 6/2/2009, Bob McGwier wrote: et for the greater good, I believe in this case, we should compromise. I have been writing code for 50 years now, so I am a bit long in the tooth. But I believe that D-Star (if it is to be successful) needs an open source version. I am not saying Flex should do it, I think JARL should do it if they want D-Star to succeed. Otherwise, it will go the way of a lot of other good ideas that never made it. -- Dave Gomberg, San Francisco NE5EE gomberg1 at wcf dot com All addresses, phones, etc. at http://www.wcf.com/ham/info.html - ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/
Re: [Flexradio] vhf/uhf digital modes and repeater operation
Yes, it will have tone support in an upcoming version of the software. D-Start is proprietary. You should be able to interface a TNC to the radio. I suspect that you can do it virtually too, but the AWG software will have to change to support separate sound card instances for TX and RX. -Tim -Original Message- From: flexradio-boun...@flex-radio.biz [mailto:flexradio-boun...@flex-radio.biz] On Behalf Of Jim Madden Sent: Monday, June 01, 2009 9:49 AM To: flexradio@flex-radio.biz Subject: [Flexradio] vhf/uhf digital modes and repeater operation I'd like to know if the forthcoming vhf/uhf add-on for the 5000 will support repeater operation and if so, how will pl tones be implemented. Also, are there thoughts about using the new add-on with the digital modes such as D-star, APRS, etc. Thanks very much Jim KD7GND ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/
Re: [Flexradio] vhf/uhf digital modes and repeater operation
What is AWG software ? Ted NX6C From: Tim Ellison telli...@itsco.com To: Jim Madden technology.mag...@verizon.net; flexradio@flex-radio.biz flexradio@flex-radio.biz Sent: Monday, June 1, 2009 8:07:51 AM Subject: Re: [Flexradio] vhf/uhf digital modes and repeater operation Yes, it will have tone support in an upcoming version of the software. D-Start is proprietary. You should be able to interface a TNC to the radio. I suspect that you can do it virtually too, but the AWG software will have to change to support separate sound card instances for TX and RX. -Tim -Original Message- From: flexradio-boun...@flex-radio.biz [mailto:flexradio-boun...@flex-radio.biz] On Behalf Of Jim Madden Sent: Monday, June 01, 2009 9:49 AM To: flexradio@flex-radio.biz Subject: [Flexradio] vhf/uhf digital modes and repeater operation I'd like to know if the forthcoming vhf/uhf add-on for the 5000 will support repeater operation and if so, how will pl tones be implemented. Also, are there thoughts about using the new add-on with the digital modes such as D-star, APRS, etc. Thanks very much Jim KD7GND ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/
Re: [Flexradio] vhf/uhf digital modes and repeater operation
AWG Packet engine -Tim -Original Message- From: flexradio-boun...@flex-radio.biz [mailto:flexradio-boun...@flex-radio.biz] On Behalf Of Ted Sent: Monday, June 01, 2009 12:56 PM To: flexradio@flex-radio.biz Subject: Re: [Flexradio] vhf/uhf digital modes and repeater operation What is AWG software ? Ted NX6C From: Tim Ellison telli...@itsco.com To: Jim Madden technology.mag...@verizon.net; flexradio@flex-radio.biz flexradio@flex-radio.biz Sent: Monday, June 1, 2009 8:07:51 AM Subject: Re: [Flexradio] vhf/uhf digital modes and repeater operation Yes, it will have tone support in an upcoming version of the software. D-Start is proprietary. You should be able to interface a TNC to the radio. I suspect that you can do it virtually too, but the AWG software will have to change to support separate sound card instances for TX and RX. -Tim -Original Message- From: flexradio-boun...@flex-radio.biz [mailto:flexradio-boun...@flex-radio.biz] On Behalf Of Jim Madden Sent: Monday, June 01, 2009 9:49 AM To: flexradio@flex-radio.biz Subject: [Flexradio] vhf/uhf digital modes and repeater operation I'd like to know if the forthcoming vhf/uhf add-on for the 5000 will support repeater operation and if so, how will pl tones be implemented. Also, are there thoughts about using the new add-on with the digital modes such as D-star, APRS, etc. Thanks very much Jim KD7GND ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/
Re: [Flexradio] vhf/uhf digital modes and repeater operation
Correction - D-STAR is NOT Proprietary. It is an open standard developed by the JARL. -Original Message- From: flexradio-boun...@flex-radio.biz [mailto:flexradio-boun...@flex-radio.biz] On Behalf Of Tim Ellison Sent: Monday, June 01, 2009 11:08 AM To: Jim Madden; flexradio@flex-radio.biz Subject: Re: [Flexradio] vhf/uhf digital modes and repeater operation Yes, it will have tone support in an upcoming version of the software. D-Start is proprietary. You should be able to interface a TNC to the radio. I suspect that you can do it virtually too, but the AWG software will have to change to support separate sound card instances for TX and RX. -Tim -Original Message- From: flexradio-boun...@flex-radio.biz [mailto:flexradio-boun...@flex-radio.biz] On Behalf Of Jim Madden Sent: Monday, June 01, 2009 9:49 AM To: flexradio@flex-radio.biz Subject: [Flexradio] vhf/uhf digital modes and repeater operation I'd like to know if the forthcoming vhf/uhf add-on for the 5000 will support repeater operation and if so, how will pl tones be implemented. Also, are there thoughts about using the new add-on with the digital modes such as D-star, APRS, etc. Thanks very much Jim KD7GND ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/
Re: [Flexradio] vhf/uhf digital modes and repeater operation
OK, so proprietary was the wrong description. The original specification is in the public domain, developed by JARL as you noted. It specifies the AMBE 2020 codec. Apparently only one company has seen fit (or gone through the trouble) to develop a CODEC to fit the standard. The codec is *not* freely available. It must be licensed from DVSI as a 'black box' (either chips or pre-compiled binaries). This precludes putting it into a GPL application distribution as you have to distribute the source with any pre-compiled binaries. When there is an open source version of the AMBE 2020 codec, then there might be a chance it could be included in open source SDR software. -Tim -Original Message- From: Woodrick, Ed [mailto:ewoodr...@ed-com.com] Sent: Monday, June 01, 2009 7:50 PM To: Tim Ellison; Jim Madden; flexradio@flex-radio.biz Subject: RE: [Flexradio] vhf/uhf digital modes and repeater operation Correction - D-STAR is NOT Proprietary. It is an open standard developed by the JARL. -Original Message- From: flexradio-boun...@flex-radio.biz [mailto:flexradio-boun...@flex-radio.biz] On Behalf Of Tim Ellison Sent: Monday, June 01, 2009 11:08 AM To: Jim Madden; flexradio@flex-radio.biz Subject: Re: [Flexradio] vhf/uhf digital modes and repeater operation Yes, it will have tone support in an upcoming version of the software. D-Start is proprietary. You should be able to interface a TNC to the radio. I suspect that you can do it virtually too, but the AWG software will have to change to support separate sound card instances for TX and RX. -Tim -Original Message- From: flexradio-boun...@flex-radio.biz [mailto:flexradio-boun...@flex-radio.biz] On Behalf Of Jim Madden Sent: Monday, June 01, 2009 9:49 AM To: flexradio@flex-radio.biz Subject: [Flexradio] vhf/uhf digital modes and repeater operation I'd like to know if the forthcoming vhf/uhf add-on for the 5000 will support repeater operation and if so, how will pl tones be implemented. Also, are there thoughts about using the new add-on with the digital modes such as D-star, APRS, etc. Thanks very much Jim KD7GND ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/
Re: [Flexradio] vhf/uhf digital modes and repeater operation
But it doesn't preclude the use of D-STAR. (and there is D-STAR data without voice) There's a number of efforts where the AMBE chip (a lot of state-of-art technology crammed into a little chip) is being used to decode and encode D-STAR signals in a manner completely consistent with the open source license. You just need to pass the digital data through the AMBE chip. And with the proper receiver modes, I see no reason why PowerSDR couldn't decode and encode the GMSK signal necessary. Ed WA4YIH -Original Message- From: Tim Ellison [mailto:telli...@itsco.com] Sent: Monday, June 01, 2009 8:09 PM To: Woodrick, Ed; Jim Madden; flexradio@flex-radio.biz Subject: RE: [Flexradio] vhf/uhf digital modes and repeater operation OK, so proprietary was the wrong description. The original specification is in the public domain, developed by JARL as you noted. It specifies the AMBE 2020 codec. Apparently only one company has seen fit (or gone through the trouble) to develop a CODEC to fit the standard. The codec is *not* freely available. It must be licensed from DVSI as a 'black box' (either chips or pre-compiled binaries). This precludes putting it into a GPL application distribution as you have to distribute the source with any pre-compiled binaries. When there is an open source version of the AMBE 2020 codec, then there might be a chance it could be included in open source SDR software. -Tim -Original Message- From: Woodrick, Ed [mailto:ewoodr...@ed-com.com] Sent: Monday, June 01, 2009 7:50 PM To: Tim Ellison; Jim Madden; flexradio@flex-radio.biz Subject: RE: [Flexradio] vhf/uhf digital modes and repeater operation Correction - D-STAR is NOT Proprietary. It is an open standard developed by the JARL. -Original Message- From: flexradio-boun...@flex-radio.biz [mailto:flexradio-boun...@flex-radio.biz] On Behalf Of Tim Ellison Sent: Monday, June 01, 2009 11:08 AM To: Jim Madden; flexradio@flex-radio.biz Subject: Re: [Flexradio] vhf/uhf digital modes and repeater operation Yes, it will have tone support in an upcoming version of the software. D-Start is proprietary. You should be able to interface a TNC to the radio. I suspect that you can do it virtually too, but the AWG software will have to change to support separate sound card instances for TX and RX. -Tim -Original Message- From: flexradio-boun...@flex-radio.biz [mailto:flexradio-boun...@flex-radio.biz] On Behalf Of Jim Madden Sent: Monday, June 01, 2009 9:49 AM To: flexradio@flex-radio.biz Subject: [Flexradio] vhf/uhf digital modes and repeater operation I'd like to know if the forthcoming vhf/uhf add-on for the 5000 will support repeater operation and if so, how will pl tones be implemented. Also, are there thoughts about using the new add-on with the digital modes such as D-star, APRS, etc. Thanks very much Jim KD7GND ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/
Re: [Flexradio] vhf/uhf digital modes and repeater operation
One could certainly do it, but is it not the start of the path to madness? Imagine if you needed a dongle for PSK31, one for RTTY, one for WSJT etc. Personally I'd rather to see the SDR community advance the Free (as in freedom) state of the art than support solutions that are implemented in hardware solely to protect a proprietary codec. Just one ham's opinion. Cheers, Bill (kd5tfd) At 07:55 PM 6/1/2009, Woodrick, Ed wrote: But it doesn't preclude the use of D-STAR. (and there is D-STAR data without voice) There's a number of efforts where the AMBE chip (a lot of state-of-art technology crammed into a little chip) is being used to decode and encode D-STAR signals in a manner completely consistent with the open source license. You just need to pass the digital data through the AMBE chip. And with the proper receiver modes, I see no reason why PowerSDR couldn't decode and encode the GMSK signal necessary. Ed WA4YIH ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/
