Re: [Elecraft] K3 DATA A vs USB for JT65/JT9
Per page 31 of the K3 owners manual sez DATA A can be used for all audio-shift transmission modes, including AFSK and PSK-31. VFO A shows the transmit suppressed carrier frequency and USB is normal for DATA A. Compression is automatically set to 0 to reduce transmitted signal distortion. AFSK A is also an audio-shift transmission but is optimized for RTTY. VFO A displays the RTTY mark frequency and LSB is normal. The built-in text decoder and the dual-passband RTTY filter can be used. 73, Mike NF4L On Mar 17, 2015, at 12:41, Fred Jensen k6...@foothill.net wrote: Can you 'splain the difference between AFSK and DATA A? I have been running RTTY in AFSK using MMTTY and the sound in/out from my radio laptop. Just two stereo cables using LINE IN/OUT on the back of the K3, no other interface hardware. VOX for PTT. It seems to work fine, am I missing something? 73, Fred K6DGW - Northern California Contest Club - CU in the 50th Running of the Cal QSO Party 3-4 Oct 2015 - www.cqp.org On 3/16/2015 7:55 PM, Don Wilhelm wrote: Sam, You are doing it right. DATA A mode is like SSB with the following exceptions: 1) TX EQ is disabled in DATA A mode 2) Audio compression is disabled in DATA A mode. 3) one can set the audio input to LINE IN for DATA A mode - no need to change it from MIC audio when using data modes. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to n...@comcast.net __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3 DATA A vs USB for JT65/JT9
Can you 'splain the difference between AFSK and DATA A? I have been running RTTY in AFSK using MMTTY and the sound in/out from my radio laptop. Just two stereo cables using LINE IN/OUT on the back of the K3, no other interface hardware. VOX for PTT. It seems to work fine, am I missing something? 73, Fred K6DGW - Northern California Contest Club - CU in the 50th Running of the Cal QSO Party 3-4 Oct 2015 - www.cqp.org On 3/16/2015 7:55 PM, Don Wilhelm wrote: Sam, You are doing it right. DATA A mode is like SSB with the following exceptions: 1) TX EQ is disabled in DATA A mode 2) Audio compression is disabled in DATA A mode. 3) one can set the audio input to LINE IN for DATA A mode - no need to change it from MIC audio when using data modes. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3 DATA A vs USB for JT65/JT9
On 2015-03-17 12:41 PM, Fred Jensen wrote: Can you 'splain the difference between AFSK and DATA A? AFSK A and DATA A are both audio modes. AFSK A uses LSB and FC is set to MARK - 85 Hz (the center of the two RTTY Tones). DATA A is USB and FC is set to 1500 Hz (the center of the transmit audio passband [200 - 2800 Hz]). AFSK A also allows use of the AFSK transmit filter (a tight filter around the Mark/Space tones to eliminate hum/pops/etc.) and the use of the Dual Tone filter on receive. 73, ... Joe, W4TV __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] K3 DATA A vs USB for JT65/JT9
I have been running DATA A with my SignaLink USB for JT65 JT9 using WSJT-X. However I am now having some problems (interfacing with other rig control software) that are making me question why I settled on DATA A rather than USB? Other than the fact DATA A inherently eliminates all potential audio settings that might cause problems if USB was used, which seems like a big plus to me. Are there any other reasons why DATA A is preferred for the data modes? I have run DATA A successfully for at least 5-6 years and being a creature of habit, I hate to switch to USB unless I am forced to. Anyone have convincing arguments pro or con about this question I am willing to hear them. P.S. I also use DATA A with Fldigi for PSK/RTTY/Olivia/etc -- GB 73 K5OAI Sam Morgan __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3 DATA A vs USB for JT65/JT9
You can use DATA-A to do LSB too. I do this when I set up the KX3 for packet radio, because it places the LO just nicely so I can also monitor the local CW calling channel and my club's SSB frequency, using a separate SDR app on my PC. 73, Matt VK2RQ On 17 Mar 2015, at 12:04 pm, Jim Brown j...@audiosystemsgroup.com wrote: On Mon,3/16/2015 5:43 PM, Sam Morgan wrote: I have run DATA A successfully for at least 5-6 years and being a creature of habit, I hate to switch to USB unless I am forced to. Hi Sam, I can't think of a single good reason to use USB for data modes. Stick with DATA A, which IS optimized for all the data modes except AFSK (and that's because AFSK RTTY uses LSB). 73, Jim K9YC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to matt.vk...@gmail.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3 DATA A vs USB for JT65/JT9
On Mon,3/16/2015 5:43 PM, Sam Morgan wrote: I have run DATA A successfully for at least 5-6 years and being a creature of habit, I hate to switch to USB unless I am forced to. Hi Sam, I can't think of a single good reason to use USB for data modes. Stick with DATA A, which IS optimized for all the data modes except AFSK (and that's because AFSK RTTY uses LSB). 73, Jim K9YC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3 DATA A vs USB for JT65/JT9
Sam, You are doing it right. DATA A mode is like SSB with the following exceptions: 1) TX EQ is disabled in DATA A mode 2) Audio compression is disabled in DATA A mode. 3) one can set the audio input to LINE IN for DATA A mode - no need to change it from MIC audio when using data modes. Either of those conditions may be present in SSB mode, and the first 2 will distort a data mode signal. So the answer is to use DATA A mode instead of SSB so you do not have to manually turn off those 2 conditions when running data modes in SSB mode. Unfortunately, some data mode software does not include recognition of the K3/KX3 DATA A mode and will force the rig to SSB mode. Be watchful of that condition and respond accordingly. The K3 offers a seamless solution to the use of both SSB and Data modes and is beneficial as long as you do not have to fight with the data mode software application to get that to happen. 73, Don W3FPR On 3/16/2015 8:43 PM, Sam Morgan wrote: I have been running DATA A with my SignaLink USB for JT65 JT9 using WSJT-X. However I am now having some problems (interfacing with other rig control software) that are making me question why I settled on DATA A rather than USB? Other than the fact DATA A inherently eliminates all potential audio settings that might cause problems if USB was used, which seems like a big plus to me. Are there any other reasons why DATA A is preferred for the data modes? I have run DATA A successfully for at least 5-6 years and being a creature of habit, I hate to switch to USB unless I am forced to. Anyone have convincing arguments pro or con about this question I am willing to hear them. P.S. I also use DATA A with Fldigi for PSK/RTTY/Olivia/etc __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
