Re: [Elecraft] distorted FM audio
Hi Chris, not changable, it's by design. :-( The clipping sound is due to the NF stage which limits at about 4 kHz. The KX3 is much much better in that respect. 73, Olli - DH8BQA Contest, DX radio projects: http://www.dh8bqa.de Am 24.08.2014 03:25, schrieb Chris Meagher: I have just started using 2 metres FM on my K3 #685. The receive audio is rough and distorted, it sounds as if its being clipped. The FM Inrad filter is .in slot 1 and FL1 is showing. By comparison, my Yaesu FT3000 and FT817 are qute undistorted on the same signals K3 SSB audio is fine. Can anyone assist as it is not pleasant to listen to. Chris VK2ACD __ 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 dro...@necg.de __ 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] Double Oven OCXO
Thanks to David, G4DMP and Ed, KL7UW for valuable information. Now, shall I press BUY on Ebay for the Morion MV89a or not - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/Synchronized-and-stable-GPS-phase-lock-for-KX3-K3-and-XV-transverters-tp7592394p7592493.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Data Mode Sideband
Hi Don, I've made thousands of RTTY QSOs. I know what I'm doing. Pondering the problem further I now believe that AFSK A and AFSK A Rev are similar in operation to CW and CW Rev. Theoretically the decode will (should) stay correctly tuned as the suppressed carrier is shifted to suit. The handbook offers no clarification on this. Important note: I run MMTTY in Logger32 which doesn't present the MMTTY UI quite the same as native MMTTY. What I attribute to MMTTY is likely a consequence of the way Logger32 talks to MMTTY. The situation, which actually is of no consequence, is that MMTTY or whatever doesn't understand the frequency manipulations that the K3 performs with respect to VFO display vs mode. The K3 reported frequency via the IF; command is interpreted as the suppressed carrier frequency, which it isn't. ALT is responded to as a sideband change, which it isn't in conventional terms eg switching sidebands in SSB because of additional frequency manipulation in the K3. The consequences are that the RTTY frequency MMTTY displays is incorrect and hence any logging info produced would also be incorrect. This could also be an issue with other data applications. I don't run any others so that is for others to determine. Now in my circumstance as I have said it is of no consequence. Logger32 correctly logs the displayed frequency from the K3 as reported by IF;. I simply ignore any frequency displays that this implementation of MMTTY presents. The reason for trying to get a detailed handle on what was happening was to see if it was possible to somehow, through a radio profile or other means, to bring everything into line without too much effort. Regards, Mike VP8NO On 23/08/2014 16:50, Don Wilhelm wrote: Mike, Do you have MMTTY set for 1445Hz Mark *and* the K3. Hold PITCH button to check/change. That would make a difference in AFSK A, but not in DATA A mode 73, Don W3FPR On 8/23/2014 3:00 PM, Mike Harris wrote: Not so sure. I monitored the TX frequency on another RX and the only change was the slight shift I mentioned, not what would, in my case (1445Hz Mark) be approx 3kHz. Using DATA A, which really does swap sideband results in a near 3k frequency shift. Regards, Mike VP8NO On 23/08/2014 15:27, Joe Subich, W4TV wrote: Mode AFSK A normal LSB. I assumed that if by using the ALT function and consequently switching to TX DATA REV that the sideband was switched from LSB to USB. It is. __ 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] Data Mode Sideband
Mike, Important note: I run MMTTY in Logger32 which doesn't present the MMTTY UI quite the same as native MMTTY. What I attribute to MMTTY is likely a consequence of the way Logger32 talks to MMTTY. More than likely it is not MMTTY that is doing the display frequency manipulating but the Logger32 Digital interface code. The native MMTTY interface will correct for USB operation. In USB one selects REV in the display and MMTTY will correctly use MARK + Shift for internal frequency calculations. Last time I checked the Logger32 Display frequency from Radio option in the Sound Card Data Window as dumb - it did not understand that the K3 and most Yaesu radios could report Mark frequency in AFSK - and simply added (AFSK) or subtracted (AFSK-R) MMTTY's MARK frequency from the reported radio frequency. This results in incorrect display for two reasons - 1) with the K3 it is applying an offset that is already applied in the reported frequency, 2) the offset is applied in the wrong direction since Logger32 always assumes AFSK (audio) is USB. Logger32 has had the same brain dead interface for the Sound Card Data Window for perhaps 10 years. It did not work correctly with the Yaesu FT-1000D/MP/MKV and still does not work correctly with the K3. None of this absolves the K3/and P3 of one mistake. The P3 frequency cursor (and K3 frequency display) appear to show the SPACE frequency in AFSK R (and FSK R) - perhaps they are really reverse as opposed to opposite sideband G. 73, ... Joe, W4TV On 2014-08-24 8:49 AM, Mike Harris wrote: Hi Don, I've made thousands of RTTY QSOs. I know what I'm doing. Pondering the problem further I now believe that AFSK A and AFSK A Rev are similar in operation to CW and CW Rev. Theoretically the decode will (should) stay correctly tuned as the suppressed carrier is shifted to suit. The handbook offers no clarification on this. Important note: I run MMTTY in Logger32 which doesn't present the MMTTY UI quite the same as native MMTTY. What I attribute to MMTTY is likely a consequence of the way Logger32 talks to MMTTY. The situation, which actually is of no consequence, is that MMTTY or whatever doesn't understand the frequency manipulations that the K3 performs with respect to VFO display vs mode. The K3 reported frequency via the IF; command is interpreted as the suppressed carrier frequency, which it isn't. ALT is responded to as a sideband change, which it isn't in conventional terms eg switching sidebands in SSB because of additional frequency manipulation in the K3. The consequences are that the RTTY frequency MMTTY displays is incorrect and hence any logging info produced would also be incorrect. This could also be an issue with other data applications. I don't run any others so that is for others to determine. Now in my circumstance as I have said it is of no consequence. Logger32 correctly logs the displayed frequency from the K3 as reported by IF;. I simply ignore any frequency displays that this implementation of MMTTY presents. The reason for trying to get a detailed handle on what was happening was to see if it was possible to somehow, through a radio profile or other means, to bring everything into line without too much effort. Regards, Mike VP8NO On 23/08/2014 16:50, Don Wilhelm wrote: Mike, Do you have MMTTY set for 1445Hz Mark *and* the K3. Hold PITCH button to check/change. That would make a difference in AFSK A, but not in DATA A mode 73, Don W3FPR On 8/23/2014 3:00 PM, Mike Harris wrote: Not so sure. I monitored the TX frequency on another RX and the only change was the slight shift I mentioned, not what would, in my case (1445Hz Mark) be approx 3kHz. Using DATA A, which really does swap sideband results in a near 3k frequency shift. Regards, Mike VP8NO On 23/08/2014 15:27, Joe Subich, W4TV wrote: Mode AFSK A normal LSB. I assumed that if by using the ALT function and consequently switching to TX DATA REV that the sideband was switched from LSB to USB. It is. __ 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 li...@subich.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
[Elecraft] Skeeter Hunt 2014 Final Scores
Well, the deadline for log summaries for the 2014 NJQRP Skeeter Hunt has come and gone. The NJQRP Club offers a hearty and well deserved Thank You! to all who participated. Thanks also for your enthusiasm which helps keep this event going from year to year. We're growing by little bits, and with your help, we aim to make the NJQRP Skeeter Hunt a must have / must do outdoor QRP event for summers to come! So without further ado - the top five finishers are: 1st Place -KX0R - George - 20,680 points 2nd Place - NA3QC - The North American QRP CW Club Team - 13,368 points 3rd Place - N3CU - Ken - 12,717 points 4th Place - N0SS - The Mid-MO Amateur Radio Club Team - 8,836 points 5th Place - WA0ITP - Terry - 6,232 points Certificates of Acheivement will be received by these fine Skeeters, as well as by those who finished top for their state or province, as well as the top finishers in the SSB and Mixed categories. The top Non-Skeeter wil receive one as well. To see the Scoreboard and the Sopabox comments, please see the links to those pages at http://www.qsl.net/w2lj/ Thanks again and hope to catch you on the air for the NoGA Peanut Power Sprint this Spetember! 73 de Larry W2LJ Skeeter #13 --- This email is free from viruses and malware because avast! Antivirus protection is active. http://www.avast.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
[Elecraft] KX3 XG3
when I cable the xg3 to the kx3, and set the mode to cw,normalize the filters,and set the xg3 to -73 dbm I read a S-5 reading the S-meter. all per-band preamp settings are 20db - default (6m is 30db - default) I would expect a S9 reading. __ 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] Troubleshooting a weak K2 receiver
Hi guys. I could use a little help tracking down the cause of a weak receiver on my newly built K2/10. All of the test and alignment procedures were satisfactory at each stage of the build. But unfortunately, when I got on the air, the receiver actually seems rather deaf. I do hear a few signals, but rarely do they move the S-meter. After going through the trouble shooting section of the manual with no luck, I decided to use the N0SS, Tom Hammond (SK) “Cheap ’N Dirty “ signal tracing method to inject a signal at the suggested test points. I found the headphone volume drops off slightly when injecting a signal at the junction of D2 D3, and almost totally disappears at the junction of D3 D4. That got me checking the voltages in the T-R switch.I found that I was only getting about 50mV at the junction of D2 and D3 (anodes). I’m also getting 0 volts at the cathode ends of D1 and D2. Backtracking from the anodes of D2 and D3, I get the same 50mV at RFC2. But on the other end of RFC2, I have the full, supplied 8 volts (receive). So I’m thinking that RFC2 is defective, and is the cause of the low switching voltage for the diodes. Does it sound like I’m on the right track? For reference, here is Tom’s “Cheap ’N Dirty Signal Tracing in the K2” article: http://www.mmccs.com/mmarc/n0ss/k2_signal_tracing.pdf Thanks for your help, Dave WB4BIN __ 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] Troubleshooting a weak K2 receiver
Dave, You are on the right track - you should have near 8 volts on the anodes of D2 and D3 during receive. Check RFC2 with an ohmmeter - if it is open, request a replacement from pa...@elecraft.com. OTOH, if it shows a low resistance, check that both leads are properly soldered. 73, Don W3FPR On 8/24/2014 2:08 PM, David Doar wrote: Hi guys. I could use a little help tracking down the cause of a weak receiver on my newly built K2/10. All of the test and alignment procedures were satisfactory at each stage of the build. But unfortunately, when I got on the air, the receiver actually seems rather deaf. I do hear a few signals, but rarely do they move the S-meter. After going through the trouble shooting section of the manual with no luck, I decided to use the N0SS, Tom Hammond (SK) “Cheap ’N Dirty “ signal tracing method to inject a signal at the suggested test points. I found the headphone volume drops off slightly when injecting a signal at the junction of D2 D3, and almost totally disappears at the junction of D3 D4. That got me checking the voltages in the T-R switch. I found that I was only getting about 50mV at the junction of D2 and D3 (anodes). I’m also getting 0 volts at the cathode ends of D1 and D2. Backtracking from the anodes of D2 and D3, I get the same 50mV at RFC2. But on the other end of RFC2, I have the full, supplied 8 volts (receive). So I’m thinking that RFC2 is defective, and is the cause of the low switching voltage for the diodes. Does it sound like I’m on the right track? For reference, here is Tom’s “Cheap ’N Dirty Signal Tracing in the K2” article: http://www.mmccs.com/mmarc/n0ss/k2_signal_tracing.pdf Thanks for your help, Dave WB4BIN __ 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 w3...@embarqmail.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
[Elecraft] Elecraft CW Net Announcement
Good Afternoon, The majority of this year's hot weather is behind us. Soon the rains will return and winter will slowly begin. My regular set of does has turned into one. The yearling remains while her mom is absent. I am pretty sure she is off having another fawn. Hopefully that yearling won't be too lonely, I do talk to her after all. I will be out cutting firewood soon so I will see them all more often. The sun has been slightly more active. SFU is 132, the highest I have seen it in weeks. There are also a few significant spots after the latest lull. Yesterday the noise level was higher but then I was working a station directly underneath the auroral oval. Normally the summer storms make my end of the connection suffer from QRN. Currently the only active storms I see are over Montana; but the day is still young. Please join us this afternoon and evening. 14050 kHz at 2200z Sunday (3 PM PDT Sunday) 7045 kHz at 0100z Monday (6 PM PDT Sunday) 73, Kevin. KD5ONS - __ 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] Troubleshooting a weak K2 receiver
Don, thanks so much for the help! I've learned a lot from reading your responses. I just checked RFC2, and it is indeed open. I'll get in touch with the parts department. On a side note, the signal tracing method that Tom recommended worked like a champ. I used the N-generator for a signal source, and that made it very easy to find out where the problem was originating. A great resource troubleshooting problems! I'm still not quite sure how to properly use the mailing list, though. I guess I'll figure it out eventually. :) 73, DaveWB4BIN __ 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] KX3 XG3
Are you by chance tuning in to the opposite sideband signal? That would show weaker. -Original Message- From: Jeff Herr her...@comcast.net Sent: Sunday, August 24, 2014 9:58am To: elecraft@mailman.qth.net Subject: [Elecraft] KX3 XG3 when I cable the xg3 to the kx3, and set the mode to cw,normalize the filters,and set the xg3 to -73 dbm I read a S-5 reading the S-meter. all per-band preamp settings are 20db - default (6m is 30db - default) I would expect a S9 reading. __ 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] NiMH batteries How do I test?
TNX FOR ALL YOUR INPUT ON THIS. I found that by running the radio until the 8.5V limit is hit on the KX3 and it shuts down I took out the batteries and tested them on a Radio shack battery tester that I had, I let the thing load the battery and watch for the reading drop. All cells held their voltage and found one bad cell that the voltage was lower than the rest and fell like a rock under the load of the tester. Key thing here is leave the meter test the battery for around 10 seconds or so. Now replaced bad AA cell re charged, For 16 hours. Battery voltage came up to 11.4V. Tried to recharge for another 4 hours and the KX3 shut down. Why did it do that? I thought 12 volts is where Max charge. Is the some sort of algorithm it goes thought to determine if the cells are fully charged?? -- Jim K9TF __ 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] NiMH batteries How do I test?
What I ment to say I got BAT ERROR when I tried to re charge for another 4 hours. I had to trun the KX3 off and turn it back on to clear the error. So I used it and ran the battery voltage down to 11 Volts and now still on charge the BT voltage is at 11.8 and still charging. So whats with this? Charger may be smarter than you think. Jim K9TF On Sun, Aug 24, 2014 at 3:14 PM, Ray Sills raysil...@verizon.net wrote: HI Jim: No... there is no real test. Just a rough guesstimate. NiMH cells are very rugged, and can withstand recharging -many- times (in the thousands of cycles, usually). With the KX3 the charger outputs a mere 200 mA... which the cells can tolerate -indefinitely-... so the charging process is not critical at all. You could -always- set the KX3 charger for 16 hours... although if you had only operated for a few hours, the cells might only be depleted by about 50% or so. If you know that, you would just charge for 8 hours or 12 hours.. whatever fits your schedule. 73 de Ray K2ULR KX3 #211 On Aug 24, 2014, at 4:08 PM, Jim GM wrote: TNX FOR ALL YOUR INPUT ON THIS. I found that by running the radio until the 8.5V limit is hit on the KX3 and it shuts down I took out the batteries and tested them on a Radio shack battery tester that I had, I let the thing load the battery and watch for the reading drop. All cells held their voltage and found one bad cell that the voltage was lower than the rest and fell like a rock under the load of the tester. Key thing here is leave the meter test the battery for around 10 seconds or so. Now replaced bad AA cell re charged, For 16 hours. Battery voltage came up to 11.4V. Tried to recharge for another 4 hours and the KX3 shut down. Why did it do that? I thought 12 volts is where Max charge. Is the some sort of algorithm it goes thought to determine if the cells are fully charged?? -- Jim K9TF __ 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 raysil...@verizon.net -- Jim K9TF __ 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] NiMH batteries How do I test?
Unfortunately the charger is not that smart, but very effective. It is a 200 mA constant charger no smarts other than knowing if the battery voltage too low or too close to the supply voltage. At 200 mA it is difficult to over charge. If the batteries are fully charged and you ask the charger to start a new charge, you can get the error because the difference between the bat voltage and the supply voltage is too small. It is not really an error just telling you that it can't charge. Running them down increases the delta and the charge circuit kicks in again. -- View this message in context: http://elecraft.365791.n2.nabble.com/NiMH-batteries-How-do-I-test-tp7592503p7592505.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Data Mode Sideband
Hi, Please DO NOT take this discussion off list... Or if you do, please include me in the loop. I find this most interesting. -- Thanks and 73's, For equipment, and software setups and reviews see: www.nk7z.net for MixW support see; http://groups.yahoo.com/neo/groups/mixw/info for Dopplergram information see: http://groups.yahoo.com/neo/groups/dopplergram/info for MM-SSTV see: http://groups.yahoo.com/neo/groups/MM-SSTV/info On Sun, 2014-08-24 at 09:49 -0300, Mike Harris wrote: Hi Don, I've made thousands of RTTY QSOs. I know what I'm doing. Pondering the problem further I now believe that AFSK A and AFSK A Rev are similar in operation to CW and CW Rev. Theoretically the decode will (should) stay correctly tuned as the suppressed carrier is shifted to suit. The handbook offers no clarification on this. Important note: I run MMTTY in Logger32 which doesn't present the MMTTY UI quite the same as native MMTTY. What I attribute to MMTTY is likely a consequence of the way Logger32 talks to MMTTY. The situation, which actually is of no consequence, is that MMTTY or whatever doesn't understand the frequency manipulations that the K3 performs with respect to VFO display vs mode. The K3 reported frequency via the IF; command is interpreted as the suppressed carrier frequency, which it isn't. ALT is responded to as a sideband change, which it isn't in conventional terms eg switching sidebands in SSB because of additional frequency manipulation in the K3. The consequences are that the RTTY frequency MMTTY displays is incorrect and hence any logging info produced would also be incorrect. This could also be an issue with other data applications. I don't run any others so that is for others to determine. Now in my circumstance as I have said it is of no consequence. Logger32 correctly logs the displayed frequency from the K3 as reported by IF;. I simply ignore any frequency displays that this implementation of MMTTY presents. The reason for trying to get a detailed handle on what was happening was to see if it was possible to somehow, through a radio profile or other means, to bring everything into line without too much effort. Regards, Mike VP8NO On 23/08/2014 16:50, Don Wilhelm wrote: Mike, Do you have MMTTY set for 1445Hz Mark *and* the K3. Hold PITCH button to check/change. That would make a difference in AFSK A, but not in DATA A mode 73, Don W3FPR On 8/23/2014 3:00 PM, Mike Harris wrote: Not so sure. I monitored the TX frequency on another RX and the only change was the slight shift I mentioned, not what would, in my case (1445Hz Mark) be approx 3kHz. Using DATA A, which really does swap sideband results in a near 3k frequency shift. Regards, Mike VP8NO On 23/08/2014 15:27, Joe Subich, W4TV wrote: Mode AFSK A normal LSB. I assumed that if by using the ALT function and consequently switching to TX DATA REV that the sideband was switched from LSB to USB. It is. __ 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 d...@nk7z.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] Troubleshooting a weak K2 receiver
David, It appears that you are using the email list just fine. If you are subscribed to receive individual emails, make a folder under your inbox named 'Elecraft' or something else you choose. Then create a filter to automatically put all email having [Elecraft] in the subject line into that folder. As far as posting, reply goes only to the originator of the post, 'Reply All' goes to the list and the originator. If your email client has a Reply to List, that will go only to the list. If you do not have that feature and wish to reply only to the list, use Reply All and delete the original poster's email from the TO: list in your reply. If I suspect that the poster receives only the digest format, I will always do a Reply All if the matter is such that a quick answer is needed. Yes, the N0SS signal tracing method is a good tool to have at your disposal. I use that technique often even though I have several other means of chasing down a problem, including an HP8640B signal generator that is capable of forcing a strong signal 'down the throat' of the most obstinate problem situation so I can view the progress through the various stages with my 'scope. One adapts his techniques to the tools available - better tools only mean that one can isolate the problem more quickly, lesser tools can also get to the root of the problem, but it takes more care and time. 73, Don W3FPR On 8/24/2014 3:09 PM, David Doar wrote: Don, thanks so much for the help! I've learned a lot from reading your responses. I just checked RFC2, and it is indeed open. I'll get in touch with the parts department. On a side note, the signal tracing method that Tom recommended worked like a champ. I used the N-generator for a signal source, and that made it very easy to find out where the problem was originating. A great resource troubleshooting problems! I'm still not quite sure how to properly use the mailing list, though. I guess I'll figure it out eventually. :) __ 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] NiMH batteries How do I test?
Jim, Good descriptions from Ray and Bob. You are also right in that the KXBC3 has some smarts, but it is constant current temperature monitored charger. You may also see the display message Not 0 to 40. It means the cell temperatures are not within the temperature range of 0 to 40 deg. C. If it occurs on a cold day at the beginning of a recharge cycle, the cells are probably too cold to be charged, but the most likely time you will see it is near the end of a recharge cycle on a warm day. As the cells near full charge, they convert more and more of the 200 MA charge current to heat rather than into the chemical process of recharging. That is how NiMH cells work when recharged with a constant current. The KXBC3 will suspend charging until the temperature drops below 40 deg. C. This is all normal operation, and is the most common method for recharging NiMH cells. Mark KE6BB __ 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] Data Mode Sideband
I have used MMTTY and find no problem, but I have not tried running MMTTY under Logger32, and that appears to be the problem source. I believe Joe Subich W4TV has explained the problem scenario adequately. As such, the thread should be closed and the individual problem areas addressed to the parties responsible for the 'strange happenings'. As Joe pointed out, the K3/P3 may have a space/mark problem, but Logger32 has a bigger problem in not recognizing the various Data sub-modes in the K3 properly. 73, Don W3FPR On 8/24/2014 7:12 PM, David Cole wrote: Hi, Please DO NOT take this discussion off list... Or if you do, please include me in the loop. I find this most interesting. __ 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] NiMH batteries How do I test?
Jim I agree with Mark but would like to add one thing. Heat is the enemy of the battery. As Mark says the heat goes up sharply at end of charge. This is how the smart charger knows the battery is fully charged. If you attempt another charge when the battery is hot you may damage the cells. This is why the charger is programed to protect the batteries. The nominal cell voltage is 1.2vdc so for 8 cells it is 9.6vdc, for 9 cells 10.8vdc, or 12.0vdc for 10 cells. The float voltage is 1.25 so the numbers are 10, 11.25, and 12.5 respective. Do not confuse NiMH with SLA which have a nominal voltage of 12.6 and float of 13.85vdc. 73 Fred, AE6QL -Original Message- From: Mark, KE6BB via Elecraft elecraft@mailman.qth.net Sent: Aug 24, 2014 4:19 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] NiMH batteries How do I test? Jim, Good descriptions from Ray and Bob. You are also right in that the KXBC3 has some smarts, but it is constant current temperature monitored charger. You may also see the display message Not 0 to 40. It means the cell temperatures are not within the temperature range of 0 to 40 deg. C. If it occurs on a cold day at the beginning of a recharge cycle, the cells are probably too cold to be charged, but the most likely time you will see it is near the end of a recharge cycle on a warm day. As the cells near full charge, they convert more and more of the 200 MA charge current to heat rather than into the chemical process of recharging. That is how NiMH cells work when recharged with a constant current. The KXBC3 will suspend charging until the temperature drops below 40 deg. C. This is all normal operation, and is the most common method for recharging NiMH cells. Mark KE6BB __ 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 fptowns...@earthlink.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] Data Mode Sideband
On 8/24/2014 4:12 PM, David Cole wrote: Hi, Please DO NOT take this discussion off list... Or if you do, please include me in the loop. I find this most interesting. Please do not take this discussion (or others) off list. When you do, when you go off list, the information is no longer shared with those of us reading along. __ 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] Data Mode Sideband
There was nothing off list. Logger32 does not properly update the frequency bar above the Spectrum/Waterfall if the transceiver reports Mark frequency in AFSK or FSK. The radio frequency will be 'off' by the value of the MARK. This is a failing of Logger32 ... The K3/P3 does not change the MARK tone/cursor when switching between AFSK/AFSK R or between FSK/FSK R. There is some debate whether the reverse modes are meant to represent shift in the opposite direction from normal (in other words, shift *UP* in reverse) or the reverse modes are the opposite sideband although amateur practice is to reverse the mark/space tones when shifting sidebands so the shift is correct in either sideband. 73, ... Joe, W4TV On 2014-08-24 11:03 PM, Lynn W. Taylor, WB6UUT wrote: On 8/24/2014 4:12 PM, David Cole wrote: Hi, Please DO NOT take this discussion off list... Or if you do, please include me in the loop. I find this most interesting. Please do not take this discussion (or others) off list. When you do, when you go off list, the information is no longer shared with those of us reading along. __ 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 li...@subich.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] Data Mode Sideband
Joe, I don't know what, if anything, was taken off list. I didn't mean this as an accusation. I'm simply repeating a concept -- that information taken off list is lost to the rest of us, and I renew my plea that discussions not be taken off list. 73 -- Lynn On 8/24/2014 8:31 PM, Joe Subich, W4TV wrote: There was nothing off list. __ 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
