Re: [Elecraft] [K3] PSK31 Problem
Roy, One thing to try is to program a memory on the K3 to send the PSK31 and see if you're also missing characters using that method. Performing this test would help identify where the problem is. 73, Paul -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-PSK31-Problem-tp7560706p7560996.html Sent from the Elecraft mailing list archive at Nabble.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
[Elecraft] [K3] PSK31 Problem
When I transmit my buffer I am told that the first four characters of the first word in the string are not being transmitted. The string on my K3 display shows that all characters are scrolling correctly. I went into the setup screen and changed the timeout from 0 to 3000 thinking that would cure this problem, but it appears not to have corrected it. What would cause the first word to be shortened, and what might be the cure? Also, when I go from one data mode to another the cursor can change several Khz up or down from the center frequency. I am sometimes able to get it back to center if I change the mark and space pairs with the PITCH control. Once the cursor is centered I can go to other data modes and it stays near the center line. I am new to the data modes so I must not be doing something right. Any help to enlighten me would be appreciated. Roy Morris W4WFB __ 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
Re: [Elecraft] [K3] PSK31 Problem
Roy, On the missing letters, all I can think of is perhaps it is power-hunting -starting low and eventually going higher (the receiving station may not hear the weaker initial signal) The way to prevent power hunting is to ignore the advice commonly given set the power level to maximum and adjust the audio to control the desired power output - that does NOT work for the K2, the K3 or the KX3. Adjust the audio level on the K3 to produce 4 bars solid with the 5th bar solid on the K3 ALC display. Use the power knob to set the desired power level. On the second item, refresh your information on how the K3 does data modes vs. frequency display. Data A will show you the carrier frequency, and the frequency on the waterfall is actually that carrier frequency plus (minus for LSB) the audio pitch sent by your software application - even though many applications show the actual frequency of the signal, that is only because of the calculations done by that software. Now move on to AFSK - the frequency displayed by the K3 depends on the shift setting in the K3 menu - the frequency displayed will be the mark frequency (consistent with MMTTY, but different than clicking on an RTTY signal on the waterfall in DATA A submode. PSK D will show you the actual frequency of the PSK31 signal (similar to the carrier plus [minus] audio frequency seen in DATA A, and FSK D will show you the actual mark frequency. That is explained (in different words) in the K3 manual. Have great fun with data modes, they are great once you get things set up right and become familiar with whatever turns out to be your favorite software applications. 73, Don W3FPR On 8/9/2012 6:06 PM, Roy Morris wrote: When I transmit my buffer I am told that the first four characters of the first word in the string are not being transmitted. The string on my K3 display shows that all characters are scrolling correctly. I went into the setup screen and changed the timeout from 0 to 3000 thinking that would cure this problem, but it appears not to have corrected it. What would cause the first word to be shortened, and what might be the cure? Also, when I go from one data mode to another the cursor can change several Khz up or down from the center frequency. I am sometimes able to get it back to center if I change the mark and space pairs with the PITCH control. Once the cursor is centered I can go to other data modes and it stays near the center line. I am new to the data modes so I must not be doing something right. Any help to enlighten me would be appreciated. Roy Morris W4WFB __ 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 __ 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
Re: [Elecraft] [K3] PSK31 Problem
Meant to say 5th bar flickering. 73, Don W3FPR On 8/9/2012 6:30 PM, Don Wilhelm wrote: Roy, On the missing letters, all I can think of is perhaps it is power-hunting -starting low and eventually going higher (the receiving station may not hear the weaker initial signal) The way to prevent power hunting is to ignore the advice commonly given set the power level to maximum and adjust the audio to control the desired power output - that does NOT work for the K2, the K3 or the KX3. Adjust the audio level on the K3 to produce 4 bars solid with the 5th bar solid on the K3 ALC display. Use the power knob to set the desired power level. On the second item, refresh your information on how the K3 does data modes vs. frequency display. Data A will show you the carrier frequency, and the frequency on the waterfall is actually that carrier frequency plus (minus for LSB) the audio pitch sent by your software application - even though many applications show the actual frequency of the signal, that is only because of the calculations done by that software. Now move on to AFSK - the frequency displayed by the K3 depends on the shift setting in the K3 menu - the frequency displayed will be the mark frequency (consistent with MMTTY, but different than clicking on an RTTY signal on the waterfall in DATA A submode. PSK D will show you the actual frequency of the PSK31 signal (similar to the carrier plus [minus] audio frequency seen in DATA A, and FSK D will show you the actual mark frequency. That is explained (in different words) in the K3 manual. Have great fun with data modes, they are great once you get things set up right and become familiar with whatever turns out to be your favorite software applications. 73, Don W3FPR On 8/9/2012 6:06 PM, Roy Morris wrote: When I transmit my buffer I am told that the first four characters of the first word in the string are not being transmitted. The string on my K3 display shows that all characters are scrolling correctly. I went into the setup screen and changed the timeout from 0 to 3000 thinking that would cure this problem, but it appears not to have corrected it. What would cause the first word to be shortened, and what might be the cure? Also, when I go from one data mode to another the cursor can change several Khz up or down from the center frequency. I am sometimes able to get it back to center if I change the mark and space pairs with the PITCH control. Once the cursor is centered I can go to other data modes and it stays near the center line. I am new to the data modes so I must not be doing something right. Any help to enlighten me would be appreciated. Roy Morris W4WFB __ 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 __ 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 __ 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
Re: [Elecraft] [K3] PSK31 Problem
Hi Roy, Until you find the issue sending four dots before the message may help, i.e. cqdx etc, such that the rxer sees cqdx at least. Yes the setup delay holds tx for that period at the end of tx input and does not provide a lead. The only suggestion I have is increasing : CONFIG:TX DLY.value, and/or Using a P3SVGA data tx method other than vox for psk31, where a enter or cntrl key sends the stored text entered.. Adrian ... vk4tux -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-PSK31-Problem-tp7560706p7560713.html Sent from the Elecraft mailing list archive at Nabble.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
Re: [Elecraft] [K3] PSK31 Problem
Roy, I have had a similar problem with characters missing from the beginning of a transmission. Don is right that the radio is power hunting (I call it spooling up). The way I have solved mine was I have used the K3 utility program and page 49 of the current K3 manual and redid the 'Transmitter Gain' then proceeded to do the rest of the steps as Don points out with ALC adjust in transmit TEST mode, then all was fine. Michael N8NOC On Aug 9, 2012, at 6:06 PM, Roy Morris wrote: When I transmit my buffer I am told that the first four characters of the first word in the string are not being transmitted. The string on my K3 display shows that all characters are scrolling correctly. I went into the setup screen and changed the timeout from 0 to 3000 thinking that would cure this problem, but it appears not to have corrected it. What would cause the first word to be shortened, and what might be the cure? Also, when I go from one data mode to another the cursor can change several Khz up or down from the center frequency. I am sometimes able to get it back to center if I change the mark and space pairs with the PITCH control. Once the cursor is centered I can go to other data modes and it stays near the center line. I am new to the data modes so I must not be doing something right. Any help to enlighten me would be appreciated. Roy Morris W4WFB __ 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 __ 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
Re: [Elecraft] [K3] PSK31 Problem
Ok On the power hunt stuff. In the 14v days I always had issue with power level as described, despite many many many tx power calibrations. Since running the K3 at 15v there has been no misbehaviour. My theory is the current sensor playing up at the lower voltage. Adrian ... vk4tux -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-PSK31-Problem-tp7560706p7560720.html Sent from the Elecraft mailing list archive at Nabble.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
