Re: [Elecraft] [K3] K3 owners: please load the latest firmware (rev 3.11)
Maybe I have missed something the last days, if so please don't mind. Prior to 3.11 I had VOX in CW on all the time. When I changed mode to SSB, VOX turn off. Now when I change between CW and SSB VOX stays on all the time. When I turn VOX off in SSB it is also off in CW. So VOX is not independent for SSB and CW anymore. I can't say if it was so in 3.10 already, missed it. Is this a bug or can it be turned on again in the config menu somehow? 73 de Roland, DC1RS -- View this message in context: http://n2.nabble.com/K3-owners%3A-please-load-the-latest-firmware-%28rev-3.11%29-tp2693755p2702003.html Sent from the [K3] 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 NR Audio level increase
I see that the dramatic increase in audio level when NR is turned on has been mentioned a couple of times but I can find no solution for this mentioned in the forum and the latest firmware 3.11 has not cured it. At this point I find NR totally un-usable unless I want to risk perforated ear drums! Terry G4POP -- View this message in context: http://n2.nabble.com/k3-NR-Audio-level-increase-tp2702048p2702048.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] Elecraft Nation
Today, as I was dealing with the fourth idiot in a row (between 2 hours of total hold time over 4 days) at customer support for a large ISP that I won't name (sounds like burp dink), it struck me how great it would be if I had Elecraft DSL instead; I could drive to work in my Elecraft Tropopause electric car, and could even look forward to calls to Elecraft Support if there was a firmware issue on my Elecraft Blu-ray player. I'm guessing this is a few Daytons away. 73, Eric WD6DBM __ 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 owners: please load the latest firmware (rev 3.11)
Roland, I've tried VOX on and off on both CW and SSB. I also tried the same with and without auto VOX off in the menu (CW WGHT in config, press 4 to toggle on/off). I cannot reproduce the problem you describe... My VOX appears to be independent between CW and SSB/AM/DATA (which are all lumped together with regard to VOX). 73 Dave, G4AON K3/100 #80, f/w 3.11 -- Prior to 3.11 I had VOX in CW on all the time. When I changed mode to SSB, VOX turn off. Now when I change between CW and SSB VOX stays on all the time. When I turn VOX off in SSB it is also off in CW. So VOX is not independent for SSB and CW anymore. I can't say if it was so in 3.10 already, missed it. Is this a bug or can it be turned on again in the config menu somehow? 73 de Roland, DC1RS __ 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] K3 owners: please load the latest firmware (rev 3.11)
Hello Dave, thank you for answering. Now I found out what I did wrong. I was in spilt operation while changing modes. When I change the modes without split, everything works as it should. But as long as I'm in split operation VOX stays on, regardless of the mode. So the error was 30cm in front of the radio :blush: 73 de Roland, DC1RS -- View this message in context: http://n2.nabble.com/K3-owners%3A-please-load-the-latest-firmware-%28rev-3.11%29-tp2693755p2704665.html Sent from the [K3] 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 NR Audio level increase
Terry I agree, it is an effect I have recently noticed. I have not had my K3 very long so I am not quite familiar with all the various options available so I was thinking it was something I have done. A quick check using Speclab indicates about a 20dB increase. Pete G3OBV From: G4POP tge...@btinternet.com To: elecraft@mailman.qth.net Sent: Saturday, 25 April, 2009 9:03:53 AM Subject: [Elecraft] k3 NR Audio level increase I see that the dramatic increase in audio level when NR is turned on has been mentioned a couple of times but I can find no solution for this mentioned in the forum and the latest firmware 3.11 has not cured it. At this point I find NR totally un-usable unless I want to risk perforated ear drums! Terry G4POP -- View this message in context: http://n2.nabble.com/k3-NR-Audio-level-increase-tp2702048p2702048.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 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] Such Service K3 RX audio on voice modes
Where would anyone get such service and attention to detail? The K3 is a product whose design is ever being improved! I truly hope the good people at Elecrafter prosper for all their good works. My fear is that as worthy as government work is that if this gem of a company ever gets out of the consumer sector then we will have lost one amazing experience. Owning a K3 and following its development is an exciting trip. We have serious technical correspondence between great engineers and intelligent users. The engineer is happy and able to make changes. My K3, this forum and Elecrafter bring additional happiness! Thank you Doug EI2CN paul bijpost wrote: The white atmospheric band noise (we all love her) should somewhere down the line be converted to (near) pink audio noise before it hits our ears. Band noise is filtered three times before it gets to the AF amp: at the crystal filter, the DSP I.F. filter, and the DSP A.F. filter. It is most definitely pink by the time you hear it. However, it seems that we have some customers with such good hearing that they could benefit from additional rolloff at the output of the DAC driving the AF amp. Lyle and I are exploring ways to do this. We've added you to the short list to test anything we might come up with. 73, Wayne N6KR __ 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 NR Audio level increase
Terry, I do not experience anything like that on my K3. What NR parameters are you using? Are you attempting to use NR at a narrow bandwidth when this occurs? If so, I can understand why that might occur. Lyle has explained previously that the NR is implemented in the K3 as signal enhancement rather than a strict noise reduction. In other words, the passband is examined for content that correlates, and the result is amplified. If the bandwidth is narrow, it is possible that the entire passband content (including noise) will appear to be a signal. 73, Don W3FPR G4POP wrote: I see that the dramatic increase in audio level when NR is turned on has been mentioned a couple of times but I can find no solution for this mentioned in the forum and the latest firmware 3.11 has not cured it. At this point I find NR totally un-usable unless I want to risk perforated ear drums! Terry G4POP __ 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] Such Service K3 RX audio on voice modes
Fully agree! The guys (and ladies!) at Elecraft show the greatest courage being such an open company. We should always consider our input to be constructive to the K line products and community, so the makers will be having as much fun as us (very lucky!) users. 73' Paul PD0PSB Where would anyone get such service and attention to detail? The K3 is a product whose design is ever being improved! I truly hope the good people at Elecrafter prosper for all their good works. -- View this message in context: http://n2.nabble.com/K3-RX-audio-on-voice-modes-%3Coh-no-here-we-go-again%3E-tp2699273p2707307.html Sent from the [K3] 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] K3 RX audio on voice modes oh no here we go again
pd0psb wrote: -K3 in pink mode sounds round,smooth and balanced out. RX EQ now works correctly and is able to really shape the sound to many different flavours. I've been playing with the K3 RX EQ and watching the audio passband response on a spectrum analyzer. It's not very difficult to configure RX EQ settings to provide 3dB/octave rolloff if that's what you want. Using a 3.2Khz ssb bandwidth and 1.45Khz center freq, the following RX EQ settings did a good job of approximating the 3dB/octave rolloff on my K3 in USB, although results will vary somewhat depending on your roofing filters: RX EQ settings for rolloff above 200hz: 0 +8 +2 -3 -5 -10 -16 -16 RX EQ settings for rolloff above 500hz: 0 +8 +2 0 -3 -4 -7 -10 N2BC's K3_EZ software makes it easy to manipulate and save RX EQ settings: http://home.roadrunner.com/~n2bc/SW.htm 73, Barry N1EU -- View this message in context: http://n2.nabble.com/K3-RX-audio-on-voice-modes-%3Coh-no-here-we-go-again%3E-tp2699273p2707344.html Sent from the [K3] 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 NR Audio level increase
Checked again the NB on CW and SSB on both rigs with 3.11. I do not see this problem at all. Is it possible the AGC setup that does this? 73, N2TK, Tony #311 #1435 -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of G4POP Sent: Saturday, April 25, 2009 4:04 AM To: elecraft@mailman.qth.net Subject: [Elecraft] k3 NR Audio level increase I see that the dramatic increase in audio level when NR is turned on has been mentioned a couple of times but I can find no solution for this mentioned in the forum and the latest firmware 3.11 has not cured it. At this point I find NR totally un-usable unless I want to risk perforated ear drums! Terry G4POP -- View this message in context: http://n2.nabble.com/k3-NR-Audio-level-increase-tp2702048p2702048.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 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] Reminder - UK Elecraft net Sundays 1000 local, 3630 KHz
The frequency is 3630 KHz plus or minus the QRM. Start time 1000 hours (local) 0900 UTC. 73 Dave, G4AON K3/100, Acom 1000, dipole __ 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] K3 RX audio on voice modes oh no here we go again
pd0psb wrote: -K3 in pink mode sounds round,smooth and balanced out. RX EQ now works correctly and is able to really shape the sound to many different flavours. I've been playing and listening some more. I have to admit to at first being somewhat dismissive of Paul's suggestions, but not any longer. I think many listeners will prefer a downward sloping passband response. I've posted some results and preferences at http://n1eu.com/K3/K3_notes.htm (scroll down to RX EQ Settings - Pink Noise Rolloff). 73, Barry N1EU -- View this message in context: http://n2.nabble.com/K3-RX-audio-on-voice-modes-%3Coh-no-here-we-go-again%3E-tp2699273p2708587.html Sent from the [K3] 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 NR Audio level increase
N2TK wrote: Checked again the NB on CW and SSB on both rigs with 3.11. I do not see this problem at all. Is it possible the AGC setup that does this? Most likely it's due to setting RX EQ to positive settings for some bands: http://www.mail-archive.com/elecraft@mailman.qth.net/msg71174.html 73, Bill -- View this message in context: http://n2.nabble.com/k3-NR-Audio-level-increase-tp2702048p2709171.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] K3 RX audio on voice modes oh no here we go again
Thanks Barry! It's indeed possible to approach the -3db/oct roll of with the RX EQ, but it's not very accurate.(I tried this as well) In the audioworld it is very uncommon the make such drastic correction with EQ to make a source sound flat To have an accurate straight slope of -3db/oct (or a bit less) before the RX EQ and than make (small) EQ corrections to personal taste I'm sure will sound VERY good to everybody and make the K3's audio really shapable for the ear. 73' Paul PD0PSB I've been playing and listening some more. I have to admit to at first being somewhat dismissive of Paul's suggestions, but not any longer. I think many listeners will prefer a downward sloping passband response. I've posted some results and preferences at http://n1eu.com/K3/K3_notes.htm (scroll down to RX EQ Settings - Pink Noise Rolloff). 73, Barry N1EU -- View this message in context: http://n2.nabble.com/K3-RX-audio-on-voice-modes-%3Coh-no-here-we-go-again%3E-tp2699273p2709258.html Sent from the [K3] 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] K3 RX audio on voice modes oh no here we go again
What about: TECH MD NSE CHR (rx noise character) WHT (white) // PNK (pink) ? ;-) 73' Paul PD0PSB -- View this message in context: http://n2.nabble.com/K3-RX-audio-on-voice-modes-%3Coh-no-here-we-go-again%3E-tp2699273p2709451.html Sent from the [K3] 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 NR Audio level increase
Don, Try this: 1. Set mode to CW, BW to 2.00, RX EQ = flat. 2. With no signal tuned in, hold NR and set to F4-4. Tap NR twice to turn off NR. 3. Tune in an S9 signal, or better yet, use a signal generator (I use an XG2). 4. Set RF gain to max, AF gain for a comfortable volume. 5. Tap NR to turn on noise reduction. (You might want to keep one hand on the AF gain control :-) On my K3 (with FW 3.11), turning on NR under these conditions boosts the audio output voltage by 17.2 dB according to the built-in AFV meter. Using less aggressive NR parameters results in less of a boost, down to 6.3 dB at F1-1. Now tune in a weak signal (say, S3) and repeat the steps. The boost is still there, but very much reduced (On my rig at S3 and NR=F4-4, the boost is 6.3 dB, at NR=F1-1 it's 1.4 dB) Now imagine trying to copy a signal that rapidly fades between S3 and S9 with NR on. 73 -- Joe KB8AP On Apr 25, 2009, at 4:35 AM, Don Wilhelm wrote: Terry, I do not experience anything like that on my K3. What NR parameters are you using? [...] 73, Don W3FPR G4POP wrote: I see that the dramatic increase in audio level when NR is turned on has been mentioned a couple of times but I can find no solution for this mentioned in the forum and the latest firmware 3.11 has not cured it. [...] Terry G4POP __ 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 NR Audio level increase
Joe, following your instructions, I cannot duplicate this on my rig listening to a S-9 signal. I do find that if AGC-THR is set below 5, the audio drops significantly when initiating NR at my preferred setting, 2-1. Decreasing the AGC SLP increases the audio with NR engaged. Gary W7TEA Don, Try this: 1. Set mode to CW, BW to 2.00, RX EQ = flat. 2. With no signal tuned in, hold NR and set to F4-4. Tap NR twice to turn off NR. -- View this message in context: http://n2.nabble.com/k3-NR-Audio-level-increase-tp2702048p2709775.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 NR Audio level increase
- Original Message - From: Joe Planisky jp...@jeffnet.org To: d...@w3fpr.com; Elecraft@mailman.qth.net Cc: G4POP tge...@btinternet.com Sent: Saturday, April 25, 2009 2:58 PM Subject: Re: [Elecraft] k3 NR Audio level increase 1. Set mode to CW, BW to 2.00 --- If the snr is marginal, why would you set BW = 2.0? Dave Hachadorian, K6LL Yuma, AZ . __ 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 RX audio on voice modes oh no here we go again
You're right, Paul -- I skimmed right past the pink idea (oops) and interpreted the poster's concern as a more common one that customers have brought up, namely that they can hear higher-order products (above the nominal communications passband). Sloping the response is a very simple thing to do, and we've added that to the list. But we're also pursuing the high-order product issue. Interesting discussion! 73, Wayne N6KR On Apr 25, 2009, at 12:47 AM, pd0psb wrote: Wayne, I'm sorry to disagree. White noise will remain white within a restricted bandwidth. The better/steeper the filters (and the K3 has those) the more the noise character will remain white within the chosen bandwidth. 73' Paul PD0PSB Band noise is filtered three times before it gets to the AF amp: at the crystal filter, the DSP I.F. filter, and the DSP A.F. filter. It is most definitely pink by the time you hear it. 73, Wayne N6KR --- http://www.elecraft.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 -- View this message in context: http://n2.nabble.com/K3-RX-audio-on-voice-modes-%3Coh-no-here-we-go- again%3E-tp2699273p2702000.html Sent from the [K3] 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 --- http://www.elecraft.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] Elecraft Nation
eric norris wrote: Today, as I was dealing with the fourth idiot in a row (between 2 hours of total hold time over 4 days) at customer support for a large ISP that I won't name (sounds like burp dink), it struck me how great it would be if I had Elecraft DSL instead; I could drive to work in my Elecraft Tropopause electric car, and could even look forward to calls to Elecraft Support if there was a firmware issue on my Elecraft Blu-ray player. I'm guessing this is a few Daytons away. 73, Eric WD6DBM __ 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 Ever since the frustration of having an early front panel failure in K3 #859 was soothed away by prompt aid and comfort by none other than one of the founders, Wayne, himself, I've been in awe of the superlative support experience that is the wonderful lot of Elecraft and the Elecrafter. In my professional life I've only come upon very few tech support operations that offer satisfactory service. APC is one of them: I maintain 40 6kva and 2 40kva UPSes. You can imagine that there are failures. But in each and every case, I was handled promptly, with courtesy and interest and with a perfectly satisfactory resolution. Given the number of K1, K1X, K2 and K3 boxen out there, that Elecraft can maintain the personal attention we fortunate folk enjoy is no small feat. This generosity of attention cannot help but feed the generosity and effectiveness of aid that is reflected in the Elecraft Reflector. Way to go, Folks! -- 73, Dick ka1oz Middleborough, MA Radio: Elecraft K3/100(Kit) SN 859 Antenna: Titan-DX __ 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] OT - RG6 dual coax as feedline?
Hello from K2 #4206 (Mike WB9GZL) with an OT question for the sat/cable/over-the-air-TV gurus. Springtime in Wisconsin for me involves trying new antennas for my K2. This past winter I was given a new 500-foot reel of RG6 dual coax w/messenger. Impedance: 75+/-3 Ohm 18 ga solid cu centers aluminum foil + 60% al braid My extensive searching has not uncovered any transmitting applications for this coax. Would you have an opinion if it could be used (with an appropriate balun at the TX, for example) as twin-lead feedline for balanced antennas such as an all-band doublet or perhaps an antenna with more variable characteristics such as a large loop? Thanks for any help you can provide, and for making this reflector an outstanding source of collective wisdom. Best regards from Mike WB9GZL. __ 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] Who is going to Dayton?
I will be thereI have a place to tailgate...dunno the number as if that would help in that parking lotbut we are just east of Mendolsens at the far east side with AB0S, W0CEM, W0NO and me Lee - K0WA The New Kansas QSO Party - August 29, Sat 9am-9pm and August 30 Sun 9am-3pm CDT More Info at: http://www.ksqsoparty.org/ In our day and age it seems that Common Sense is in short supply. If you don't have any Common Sense - get some Common Sense and use it. If you can't find any Common Sense, ask for help from somebody who has some Common Sense. Is Common Sense divine? --- On Fri, 4/24/09, Mike-WE0H w...@yahoo.com wrote: From: Mike-WE0H w...@yahoo.com Subject: [Elecraft] Who is going to Dayton? To: Elecraft-List elecraft@mailman.qth.net Date: Friday, April 24, 2009, 8:47 PM I imagine there will be a bunch from this reflector attending Hamvention? I will be there Friday before noon. -- Mike WE0H K2 #6698 SKCC #5446 __ 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] OT - RG6 dual coax as feedline?
It can certainly be used as a balanced 150-ohm transmission line, but I would stay away from any applications where it operated at appreciable SWR. In other words, both of the applications you propose. Wes N7WS My extensive searching has not uncovered any transmitting applications for this coax. Would you have an opinion if it could be used (with an appropriate balun at the TX, for example) as twin-lead feedline for balanced antennas such as an all-band doublet or perhaps an antenna with more variable characteristics such as a large loop? __ 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 NR Audio level increase
The settings and steps are intended to demonstrate the issue, they're not necessarily typical operating settings. Don had suggested that perhaps the cause was related to using NR with a narrow bandwidth. I wanted to demonstrate that it happens at wide bandwidth as well. 73 -- Joe KB8AP On Apr 25, 2009, at 8:21 AM, Dave Hachadorian wrote: If the snr is marginal, why would you set BW = 2.0? Dave Hachadorian, K6LL Yuma, AZ __ 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] K3 RX audio on voice modes oh no here we go again
IMD LPF and countersloping combined will make K3 the best sounding radio up to now, trust me. Let's make music ;-) 73' Paul PD0PSB You're right, Paul -- I skimmed right past the pink idea (oops) and interpreted the poster's concern as a more common one that customers have brought up, namely that they can hear higher-order products (above the nominal communications passband). Sloping the response is a very simple thing to do, and we've added that to the list. But we're also pursuing the high-order product issue. Interesting discussion! 73, Wayne N6KR -- View this message in context: http://n2.nabble.com/K3-RX-audio-on-voice-modes-%3Coh-no-here-we-go-again%3E-tp2699273p2710513.html Sent from the [K3] 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 NR Audio level increase
I have the problem also for some time, it is signal strength dependent, the signal must be loud enough and when you hit the NR function with a high setting the audio increases greatly,Easiest way to prove it is with a variable strength signal fed into the receiver and setting the NR to a setting if 4.Will clean your ears out for sure. It does it on other settings as well but less of an audio increase. By the way thats not how an audio peak filter works if thats what its trying to simulate. Merv KH7C Checked again the NB on CW and SSB on both rigs with 3.11. I do not see this problem at all. Is it possible the AGC setup that does this? 73, N2TK, Tony #311 #1435 -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of G4POP Sent: Saturday, April 25, 2009 4:04 AM To: elecraft@mailman.qth.net Subject: [Elecraft] k3 NR Audio level increase I see that the dramatic increase in audio level when NR is turned on has been mentioned a couple of times but I can find no solution for this mentioned in the forum and the latest firmware 3.11 has not cured it. At this point I find NR totally un-usable unless I want to risk perforated ear drums! Terry G4POP __ 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] OT - RG6 dual coax as feedline?
On Sat, 25 Apr 2009 09:05:54 -0700 (PDT), Mike C wrote: Would you have an opinion if it could be used (with an appropriate balun at the TX, for example) as twin-lead feedline for balanced antennas such as an all-band doublet or perhaps an antenna with more variable characteristics such as a large loop? This configuration is a very good way to use coax if the impedance of the feedline (150 ohms) is a good match to the antenna. I would bond the coax shields to ground for lightning protection. 73, Jim Brown 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
Re: [Elecraft] k3 NR Audio level increase
Good catch, Gary. AGC settings are the missing piece and probably why some people aren't seeing this. With an S9 signal, NR=F4-4, BW=2.00, I get the following results for different settings of AGC THR and AGC SLP when NR is engaged: THR=2, SLP= 0 +10.0 dB THR=2, SLP= 5 + 2.7 dB THR=2, SLP=10 - 6.0 dB THR=2, SLP=15 -15.5 dB THR=4, SLP= 0 +15.2 dB THR=4, SLP= 5 + 9.6 dB THR=4, SLP=10 + 3.6 dB THR=4, SLP=15 - 3.8 dB THR=6, SLP= 0 +16.6 dB THR=6, SLP= 5 +13.3 dB THR=6, SLP=10 + 7.9 dB THR=6, SLP=15 + 1.5 dB THR=8, SLP= 0 +18.3 dB THR=8, SLP= 5 +15.6 dB THR=8, SLP=10 +11.7 dB THR=8, SLP=15 + 7.0 db 73 -- Joe KB8AP On Apr 25, 2009, at 8:21 AM, W7TEA wrote: Joe, following your instructions, I cannot duplicate this on my rig listening to a S-9 signal. I do find that if AGC-THR is set below 5, the audio drops significantly when initiating NR at my preferred setting, 2-1. Decreasing the AGC SLP increases the audio with NR engaged. Gary W7TEA __ 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] OT - RG6 dual coax as feedline?
On 4/25/2009 9:05 AM, Mike C wrote: This past winter I was given a new 500-foot reel of RG6 dual coax w/messenger. My extensive searching has not uncovered any transmitting applications for this coax. One of our local gurus, the late Judge Greg Milnes, W7OZ, fed the HF antennas on his three 100-foot-plus towers with 75 ohm hardline that he, probably like yourself, got from a local cable company that was surplussing it. It survived his loafing along 1500-watt amplifier output with no problems. The 1.5:1 SWR was easily tuned out. -- 73 de K2ASP - Phil Kane Elecraft K2/100 s/n 5402 From a Clearing in the Silicon Forest Beaverton (Washington County) Oregon __ 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 NR Audio level increase
So where's the problem? Everything seems to be working properly. With a high THR and low SLP, louder signals are LOUD and NR just helps make it more obvious because there's not so much noise to distract your hearing. Remember, AGC used to be called AVC Automatic Volume Control, back in the old days. If you choose a high threshold, THR, that means that AVC does almost nothing. AVC becomes MVW, manual volume control, Meaning knobs must be turned (AF). Steve Ellington n...@carolina.rr.com - Original Message - From: Joe Planisky jp...@jeffnet.org To: W7TEA gt...@mac.com Cc: elecraft@mailman.qth.net Sent: Saturday, April 25, 2009 1:22 PM Subject: Re: [Elecraft] k3 NR Audio level increase Good catch, Gary. AGC settings are the missing piece and probably why some people aren't seeing this. With an S9 signal, NR=F4-4, BW=2.00, I get the following results for different settings of AGC THR and AGC SLP when NR is engaged: THR=2, SLP= 0 +10.0 dB THR=2, SLP= 5 + 2.7 dB THR=2, SLP=10 - 6.0 dB THR=2, SLP=15 -15.5 dB THR=4, SLP= 0 +15.2 dB THR=4, SLP= 5 + 9.6 dB THR=4, SLP=10 + 3.6 dB THR=4, SLP=15 - 3.8 dB THR=6, SLP= 0 +16.6 dB THR=6, SLP= 5 +13.3 dB THR=6, SLP=10 + 7.9 dB THR=6, SLP=15 + 1.5 dB THR=8, SLP= 0 +18.3 dB THR=8, SLP= 5 +15.6 dB THR=8, SLP=10 +11.7 dB THR=8, SLP=15 + 7.0 db 73 -- Joe KB8AP On Apr 25, 2009, at 8:21 AM, W7TEA wrote: Joe, following your instructions, I cannot duplicate this on my rig listening to a S-9 signal. I do find that if AGC-THR is set below 5, the audio drops significantly when initiating NR at my preferred setting, 2-1. Decreasing the AGC SLP increases the audio with NR engaged. Gary W7TEA __ 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 NR Audio level increase
I am talking about SSB with a bandwidth between 1k and 3.5k ( I have the 250, 1k, 1.8k, 2.7k 6K filters installed) No mater what NR setting is used I get the same effect to a lesser or grater degree Strange that some of you have this problem while others do not? Terry N2TK wrote: Checked again the NB on CW and SSB on both rigs with 3.11. I do not see this problem at all. Is it possible the AGC setup that does this? 73, N2TK, Tony #311 #1435 -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of G4POP Sent: Saturday, April 25, 2009 4:04 AM To: elecraft@mailman.qth.net Subject: [Elecraft] k3 NR Audio level increase I see that the dramatic increase in audio level when NR is turned on has been mentioned a couple of times but I can find no solution for this mentioned in the forum and the latest firmware 3.11 has not cured it. At this point I find NR totally un-usable unless I want to risk perforated ear drums! Terry G4POP -- View this message in context: http://n2.nabble.com/k3-NR-Audio-level-increase-tp2702048p2702048.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 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 -- View this message in context: http://n2.nabble.com/k3-NR-Audio-level-increase-tp2702048p2711713.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 NR Audio level increase
So where's the problem? Everything seems to be working properly. With a high THR and low SLP, louder signals are LOUD and NR just helps make it more obvious because there's not so much noise to distract your hearing. It's not working as it should ... there should be no volume change when engaging NR. Noise reduction should work on the audio AFTER AGC. If anything, the test results below should show a very slight drop with NR due to the removal of the unwanted (broadband) components but the peak level should not change. This NR problem is the flip side of the issue with the notch filter ... Notch is working AFTER the AGC where it should work before AGC while NR is working before the AGC where it should work AFTER the AGC. 73, ... Joe, W4TV -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Steve Ellington Sent: Saturday, April 25, 2009 2:00 PM To: Joe Planisky; W7TEA Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] k3 NR Audio level increase So where's the problem? Everything seems to be working properly. With a high THR and low SLP, louder signals are LOUD and NR just helps make it more obvious because there's not so much noise to distract your hearing. Remember, AGC used to be called AVC Automatic Volume Control, back in the old days. If you choose a high threshold, THR, that means that AVC does almost nothing. AVC becomes MVW, manual volume control, Meaning knobs must be turned (AF). Steve Ellington n...@carolina.rr.com - Original Message - From: Joe Planisky jp...@jeffnet.org To: W7TEA gt...@mac.com Cc: elecraft@mailman.qth.net Sent: Saturday, April 25, 2009 1:22 PM Subject: Re: [Elecraft] k3 NR Audio level increase Good catch, Gary. AGC settings are the missing piece and probably why some people aren't seeing this. With an S9 signal, NR=F4-4, BW=2.00, I get the following results for different settings of AGC THR and AGC SLP when NR is engaged: THR=2, SLP= 0 +10.0 dB THR=2, SLP= 5 + 2.7 dB THR=2, SLP=10 - 6.0 dB THR=2, SLP=15 -15.5 dB THR=4, SLP= 0 +15.2 dB THR=4, SLP= 5 + 9.6 dB THR=4, SLP=10 + 3.6 dB THR=4, SLP=15 - 3.8 dB THR=6, SLP= 0 +16.6 dB THR=6, SLP= 5 +13.3 dB THR=6, SLP=10 + 7.9 dB THR=6, SLP=15 + 1.5 dB THR=8, SLP= 0 +18.3 dB THR=8, SLP= 5 +15.6 dB THR=8, SLP=10 +11.7 dB THR=8, SLP=15 + 7.0 db 73 -- Joe KB8AP On Apr 25, 2009, at 8:21 AM, W7TEA wrote: Joe, following your instructions, I cannot duplicate this on my rig listening to a S-9 signal. I do find that if AGC-THR is set below 5, the audio drops significantly when initiating NR at my preferred setting, 2-1. Decreasing the AGC SLP increases the audio with NR engaged. Gary W7TEA __ 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
[Elecraft] [K3] PROBLEM WITH FIRMWARE 3.11
I have just tried to load the latest firmware but I am having a problem. I keep getting a message that says K3 did not respond to revision query RVM; Firmware load failed My K3 display shows FPF LOAD PENDING I have retried it a few times and I still get the same message. I have the latest version of K3 Utility and I have done many downloads before with no problems. What am I doing wrong Thanks Larry -- View this message in context: http://n2.nabble.com/PROBLEM-WITH-FIRMWARE-3.11-tp2712705p2712705.html Sent from the [K3] 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 NR Audio level increase
Joe, I tried your suggested settings, and yes I found an increase in audio volume. I also observed that the NR worked as a squelch at that aggressive setting. I normally use F1-3 or F1-4 for NR and have no problem. I don't use NR when attempting to copy a weak signal. When the weak signal is down in the noise level, the NR algorithm cannot distinguish between the noise and the signal with certainty. My ears do a better job despite the noise, so I turn NR off when digging for the weak ones. 73, Don W3FPR Joe Planisky wrote: Don, Try this: 1. Set mode to CW, BW to 2.00, RX EQ = flat. 2. With no signal tuned in, hold NR and set to F4-4. Tap NR twice to turn off NR. 3. Tune in an S9 signal, or better yet, use a signal generator (I use an XG2). 4. Set RF gain to max, AF gain for a comfortable volume. 5. Tap NR to turn on noise reduction. (You might want to keep one hand on the AF gain control :-) On my K3 (with FW 3.11), turning on NR under these conditions boosts the audio output voltage by 17.2 dB according to the built-in AFV meter. Using less aggressive NR parameters results in less of a boost, down to 6.3 dB at F1-1. Now tune in a weak signal (say, S3) and repeat the steps. The boost is still there, but very much reduced (On my rig at S3 and NR=F4-4, the boost is 6.3 dB, at NR=F1-1 it's 1.4 dB) Now imagine trying to copy a signal that rapidly fades between S3 and S9 with NR on. 73 -- Joe KB8AP __ 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 NR Audio level increase
Apparently NR *is* upstream of AGC, since a while back NR was disallowed unless AGC was enabled [1] in order, according to K2VCO, to prevent instability [2]. By the way, I can observe this instability (a wup-wup oscillation) in LSB/USB modes with an S9 carrier, and AGC settings on the light side (high threshold, low slope, with THR=8 and SLP=0 being the extreme). I ran into this tuning through shortwave BC stations with NR enabled with THR and SLP set to 5. I'm using firmware version 3.11. What seems odd to me is that although I can reproduce the audio level increase cases observed by others when NR is enabled, the S-meter indication doesn't change - I suppose that the S-meter pickoff point is upstream of NR? On the flip side you mention, if notch filtering was before AGC as you wish, would you expect the S-meter indication to change when the notch filter is active? Bob NW8L [1] http://www.mail-archive.com/elecraft@mailman.qth.net/msg58245.html [2] http://www.mail-archive.com/elecraft@mailman.qth.net/msg60930.html On Sat, Apr 25, 2009 at 12:55 PM, Joe Subich, W4TV li...@subich.com wrote: It's not working as it should ... there should be no volume change when engaging NR. Noise reduction should work on the audio AFTER AGC. If anything, the test results below should show a very slight drop with NR due to the removal of the unwanted (broadband) components but the peak level should not change. This NR problem is the flip side of the issue with the notch filter ... Notch is working AFTER the AGC where it should work before AGC while NR is working before the AGC where it should work AFTER the AGC. 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
Re: [Elecraft] k3 NR Audio level increase
Heh. My voltmeter's hearing doesn't tend to get distracted by noise. On Apr 25, 2009, at 11:00 AM, Steve Ellington wrote: So where's the problem? Everything seems to be working properly. With a high THR and low SLP, louder signals are LOUD and NR just helps make it more obvious because there's not so much noise to distract your hearing. Remember, AGC used to be called AVC Automatic Volume Control, back in the old days. If you choose a high threshold, THR, that means that AVC does almost nothing. AVC becomes MVW, manual volume control, Meaning knobs must be turned (AF). Steve Ellington n...@carolina.rr.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 NR Audio level increase
Interesting. For CW I always use the NR to dig out the weak ones. The effect is amazing. I believe the reason we all see this differently is due to AGC settings. THR, SLP etc. really affect the NR. Steve Ellington n...@carolina.rr.com - Original Message - From: Don Wilhelm w3...@embarqmail.com To: Joe Planisky jp...@jeffnet.org Cc: Elecraft@mailman.qth.net Sent: Saturday, April 25, 2009 5:14 PM Subject: Re: [Elecraft] k3 NR Audio level increase Joe, I tried your suggested settings, and yes I found an increase in audio volume. I also observed that the NR worked as a squelch at that aggressive setting. I normally use F1-3 or F1-4 for NR and have no problem. I don't use NR when attempting to copy a weak signal. When the weak signal is down in the noise level, the NR algorithm cannot distinguish between the noise and the signal with certainty. My ears do a better job despite the noise, so I turn NR off when digging for the weak ones. 73, Don W3FPR Joe Planisky wrote: Don, Try this: 1. Set mode to CW, BW to 2.00, RX EQ = flat. 2. With no signal tuned in, hold NR and set to F4-4. Tap NR twice to turn off NR. 3. Tune in an S9 signal, or better yet, use a signal generator (I use an XG2). 4. Set RF gain to max, AF gain for a comfortable volume. 5. Tap NR to turn on noise reduction. (You might want to keep one hand on the AF gain control :-) On my K3 (with FW 3.11), turning on NR under these conditions boosts the audio output voltage by 17.2 dB according to the built-in AFV meter. Using less aggressive NR parameters results in less of a boost, down to 6.3 dB at F1-1. Now tune in a weak signal (say, S3) and repeat the steps. The boost is still there, but very much reduced (On my rig at S3 and NR=F4-4, the boost is 6.3 dB, at NR=F1-1 it's 1.4 dB) Now imagine trying to copy a signal that rapidly fades between S3 and S9 with NR on. 73 -- Joe KB8AP __ 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] OT - RG6 dual coax as feedline?
Mike, I know you have it in hand, but I would suggest using that cable as a parallel transmission line only for the lengths that must run indoors. Use normal ladder line or open wire transmission line for most of your transmission line run. My reason: The paralleled line certainly will work, but the loss is the same as a single coax of the same material, and in a multiband situation, it certainly will be run at a high SWR. However, a shielded parallel line can be handled just like coax and run near surfaces where normal parallel line should not be located. As such, it is a good solution for the shack entry cable. Do tie the shields together and ground them at the entry point and in the shack. You can use the remainder of it to feed resonant antennas. If it is anything like normal RG-6 it will easily handle up to 500 watts even with a 1.5 SWR and will do it with less loss than RG-8X. Because of the aluminum shield, use normal crimp type F connectors, or if you can locate them, there are BNC connectors for RG-6 coax with aluminum shield. 73, Don W3FPR Mike C wrote: Hello from K2 #4206 (Mike WB9GZL) with an OT question for the sat/cable/over-the-air-TV gurus. Springtime in Wisconsin for me involves trying new antennas for my K2. This past winter I was given a new 500-foot reel of RG6 dual coax w/messenger. Impedance: 75+/-3 Ohm 18 ga solid cu centers aluminum foil + 60% al braid My extensive searching has not uncovered any transmitting applications for this coax. Would you have an opinion if it could be used (with an appropriate balun at the TX, for example) as twin-lead feedline for balanced antennas such as an all-band doublet or perhaps an antenna with more variable characteristics such as a large loop? Thanks for any help you can provide, and for making this reflector an outstanding source of collective wisdom. Best regards from Mike WB9GZL. __ 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 NR Audio level increase
Steve, My AGC THR is 008 and the SLP is 02 if that makes any difference to your conclusions. FWIW, a narrow bandwidth with NR off is best for weak signal reception for me. The narrow bandwidth itself reduces the noise substantially and my ears have to do the rest. 73, Don W3FPR Steve Ellington wrote: Interesting. For CW I always use the NR to dig out the weak ones. The effect is amazing. I believe the reason we all see this differently is due to AGC settings. THR, SLP etc. really affect the NR. Steve Ellington n...@carolina.rr.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] KX1 Kynar wire
What's up with this Kynar wire in the KX1 kit? I seem to recall this problem when building my first KX1. The second one is no better. It's impossible to strip it without causing it to break - either during stripping or after it's soldered to the board. My as seen on TV wire stripper just cuts it. If I carefully roll it under my exacto knife it either breaks when I pull off the insulation or after I solder it to the board and bend it allow the board to mount flat against the KX1 board. I don't think stripping it is causing the problem. Even when I burn the insulation off so there are no nicks in the wire it breaks when you manipulate it. I've blown through the supply in the kit. The wire just disintegrates when I touch or move it. I'll order more on Monday, though I'm thinking I'm going to need a spool. I may pick up some locally so I can continue building. The wire seems unnecessarily fancy for this job. I'm sure Radio Shack has some lamp cord I could use that would accomplish the same thing. Well, maybe something a little lighter than that. But certainly anything would work, right? Any suggestions for handling this wire so it doesn't just fall apart in your hands? Craig NZ0R KX1 #1499 K1 #1966 K2/100 #4941 K3/100 #25 __ 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 NR Audio level increase
I've only just now noticed that the oscillation when NR is enabled that I hear when tuning through an S9 carrier in USB/LSB happens only when VOX is enabled. In fact, I just now noticed that the red TX indicator is illuminated when this happens - although there is no indication of power out on either the K3 or the outboard power meter. So with AGC SLP=5, THR=5, NR enabled, VOX enabled, tuning through S9 carrier triggers this on USB/LSB, but not CW. Very strange. Bob NW8L On Sat, Apr 25, 2009 at 3:20 PM, Bob Cunnings bob.cunni...@gmail.com wrote: Apparently NR *is* upstream of AGC, since a while back NR was disallowed unless AGC was enabled [1] in order, according to K2VCO, to prevent instability [2]. By the way, I can observe this instability (a wup-wup oscillation) in LSB/USB modes with an S9 carrier, and AGC settings on the light side (high threshold, low slope, with THR=8 and SLP=0 being the extreme). I ran into this tuning through shortwave BC stations with NR enabled with THR and SLP set to 5. I'm using firmware version 3.11. What seems odd to me is that although I can reproduce the audio level increase cases observed by others when NR is enabled, the S-meter indication doesn't change - I suppose that the S-meter pickoff point is upstream of NR? On the flip side you mention, if notch filtering was before AGC as you wish, would you expect the S-meter indication to change when the notch filter is active? Bob NW8L [1] http://www.mail-archive.com/elecraft@mailman.qth.net/msg58245.html [2] http://www.mail-archive.com/elecraft@mailman.qth.net/msg60930.html On Sat, Apr 25, 2009 at 12:55 PM, Joe Subich, W4TV li...@subich.com wrote: It's not working as it should ... there should be no volume change when engaging NR. Noise reduction should work on the audio AFTER AGC. If anything, the test results below should show a very slight drop with NR due to the removal of the unwanted (broadband) components but the peak level should not change. This NR problem is the flip side of the issue with the notch filter ... Notch is working AFTER the AGC where it should work before AGC while NR is working before the AGC where it should work AFTER the AGC. 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
Re: [Elecraft] KX1 Kynar wire
Craig, I believe you are talking about the #24 wire used for the KXB3080 option. Unless the wire has been changed in the last month, there is no breakage problem that I have seen in the many KXB3080 installations that I have done. I have had no problem stripping it with one of the cheapo pliers type striiping tools - you know the ones that just look like two hinged metal strips with a notch for cutting and stripping the wire - just adjust them to *not* nick the wire. The long F wire is the only one that really needs this thin wire - that one must go through a via hole in the board to get to the LPF relay on the top of the board. You can substitute other wire for all except that one. There is enough green insulated wire to make the rest of the connections. 73, Don W3FPR Craig Rairdin wrote: What's up with this Kynar wire in the KX1 kit? I seem to recall this problem when building my first KX1. The second one is no better. It's impossible to strip it without causing it to break - either during stripping or after it's soldered to the board. My as seen on TV wire stripper just cuts it. If I carefully roll it under my exacto knife it either breaks when I pull off the insulation or after I solder it to the board and bend it allow the board to mount flat against the KX1 board. I don't think stripping it is causing the problem. Even when I burn the insulation off so there are no nicks in the wire it breaks when you manipulate it. I've blown through the supply in the kit. The wire just disintegrates when I touch or move it. I'll order more on Monday, though I'm thinking I'm going to need a spool. I may pick up some locally so I can continue building. The wire seems unnecessarily fancy for this job. I'm sure Radio Shack has some lamp cord I could use that would accomplish the same thing. Well, maybe something a little lighter than that. But certainly anything would work, right? Any suggestions for handling this wire so it doesn't just fall apart in your hands? Craig NZ0R KX1 #1499 K1 #1966 K2/100 #4941 K3/100 #25 __ 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 No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.5.287 / Virus Database: 270.12.4/2080 - Release Date: 04/25/09 08:29:00 __ 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 NR Audio level increase
I believe Bill W4ZV hit it on the head with his comment, a couple messages back (ref. below) I was having this problem until I adjusted my RX EQ so the desired CW freq. was at zero or +1, and not higher. Now it's not a problem. Windy KM5Q Most likely it's due to setting RX EQ to positive settings for some bands: http://www.mail-archive.com/elecraft@mailman.qth.net/msg71174.html 73, Bill __ 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] About the Spring 2009 QRP Quarterly
From the G4GXL post about the Spring issue of the QRP Quarterly (posted to several lists)-- ...There's 15 pages of Idea Exchange and it's all good stuff As author of the column, my response is, well, yes and no :-) There's an item about a BCI filter for the Pixie transceiver. I did some computer analysis on the author's design and suggested some improvements. But after I had submitted the column to the publisher I had a Doh! moment. I realized something about the original design that I probably should have recognized a lot earlier. (But whether it really makes a lot of difference is probably open to debate.) In any event, there's probably going to be someone who reads my commentary on the filter and mumble that I don't know what I'm talking about, and/or that there's a lot more to it than I realize. And of course they would be right. I am not an engineer and also don't design, prototype and test filters at work, so of course there are gaps in my understanding of things. If anyone is an RF engineer and/or designs filters a lot at work, I'd love to discuss this particular issue with you! (And yes, there will be an update in the next issue of the column.) 73 DE WA8MCQ __ 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 NR Audio level increase
Bob When in USB/LSB, NR does tend to totally null out carriers. CW does make that wup-wup sound as it's notched out. I'm not sure why NR would be acting as an Auto Notch but this does seem to be the case. Don't know about your red light...Do you have a mic connected? Steve Ellington n...@carolina.rr.com - Original Message - From: Bob Cunnings bob.cunni...@gmail.com To: Elecraft@mailman.qth.net Sent: Saturday, April 25, 2009 7:39 PM Subject: Re: [Elecraft] k3 NR Audio level increase I've only just now noticed that the oscillation when NR is enabled that I hear when tuning through an S9 carrier in USB/LSB happens only when VOX is enabled. In fact, I just now noticed that the red TX indicator is illuminated when this happens - although there is no indication of power out on either the K3 or the outboard power meter. So with AGC SLP=5, THR=5, NR enabled, VOX enabled, tuning through S9 carrier triggers this on USB/LSB, but not CW. Very strange. Bob NW8L On Sat, Apr 25, 2009 at 3:20 PM, Bob Cunnings bob.cunni...@gmail.com wrote: Apparently NR *is* upstream of AGC, since a while back NR was disallowed unless AGC was enabled [1] in order, according to K2VCO, to prevent instability [2]. By the way, I can observe this instability (a wup-wup oscillation) in LSB/USB modes with an S9 carrier, and AGC settings on the light side (high threshold, low slope, with THR=8 and SLP=0 being the extreme). I ran into this tuning through shortwave BC stations with NR enabled with THR and SLP set to 5. I'm using firmware version 3.11. What seems odd to me is that although I can reproduce the audio level increase cases observed by others when NR is enabled, the S-meter indication doesn't change - I suppose that the S-meter pickoff point is upstream of NR? On the flip side you mention, if notch filtering was before AGC as you wish, would you expect the S-meter indication to change when the notch filter is active? Bob NW8L [1] http://www.mail-archive.com/elecraft@mailman.qth.net/msg58245.html [2] http://www.mail-archive.com/elecraft@mailman.qth.net/msg60930.html On Sat, Apr 25, 2009 at 12:55 PM, Joe Subich, W4TV li...@subich.com wrote: It's not working as it should ... there should be no volume change when engaging NR. Noise reduction should work on the audio AFTER AGC. If anything, the test results below should show a very slight drop with NR due to the removal of the unwanted (broadband) components but the peak level should not change. This NR problem is the flip side of the issue with the notch filter ... Notch is working AFTER the AGC where it should work before AGC while NR is working before the AGC where it should work AFTER the AGC. 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 __ 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 NR Audio level increase
My test results were obtained with all RX EQ setting set to 0. 73 -- Joe KB8AP On Apr 25, 2009, at 5:38 PM, KM5Q wrote: I believe Bill W4ZV hit it on the head with his comment, a couple messages back (ref. below) I was having this problem until I adjusted my RX EQ so the desired CW freq. was at zero or +1, and not higher. Now it's not a problem. Windy KM5Q Most likely it's due to setting RX EQ to positive settings for some bands: http://www.mail-archive.com/elecraft@mailman.qth.net/msg71174.html 73, Bill __ 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] K3 Setting the time
I've seen mention of the clock in the K3 being set from the computer. At least this is what I remembered from the posts that I have seen in the past. Can someone explain to me how this is being done? I think I saw the KDVR mentioned as part of a requirement for this. Am I out in left field? Someone help me back to reality. :-) Stan Rife W5EWA __ 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 NR Audio level increase
Yes, I've noticed the tendency of NR to null out carriers, which is easy to observe when VOX is off. But with VOX on, the phenomenon I'm observing is quite different than that - a wup-wup-wup oscillation with a period of a second or so that may persist for a considerable time after it is triggered by slowly tuning through the carrier. The more aggressive the NR setting, the more vulnerable it seems, but with a strong carrier it can be triggered at any setting. No, I have no microphone connected, and no computer. When this occurs, the red TX indicator does *not* light if K3 is in TEST mode, that's why I hadn't noticed it earlier - I had the rig in TEST mode at the time. Bob NW8L On Sat, Apr 25, 2009 at 7:01 PM, Steve Ellington n...@carolina.rr.com wrote: Bob When in USB/LSB, NR does tend to totally null out carriers. CW does make that wup-wup sound as it's notched out. I'm not sure why NR would be acting as an Auto Notch but this does seem to be the case. Don't know about your red light...Do you have a mic connected? Steve Ellington n...@carolina.rr.com - Original Message - From: Bob Cunnings bob.cunni...@gmail.com To: Elecraft@mailman.qth.net Sent: Saturday, April 25, 2009 7:39 PM Subject: Re: [Elecraft] k3 NR Audio level increase I've only just now noticed that the oscillation when NR is enabled that I hear when tuning through an S9 carrier in USB/LSB happens only when VOX is enabled. In fact, I just now noticed that the red TX indicator is illuminated when this happens - although there is no indication of power out on either the K3 or the outboard power meter. So with AGC SLP=5, THR=5, NR enabled, VOX enabled, tuning through S9 carrier triggers this on USB/LSB, but not CW. Very strange. Bob NW8L On Sat, Apr 25, 2009 at 3:20 PM, Bob Cunnings bob.cunni...@gmail.com wrote: Apparently NR *is* upstream of AGC, since a while back NR was disallowed unless AGC was enabled [1] in order, according to K2VCO, to prevent instability [2]. By the way, I can observe this instability (a wup-wup oscillation) in LSB/USB modes with an S9 carrier, and AGC settings on the light side (high threshold, low slope, with THR=8 and SLP=0 being the extreme). I ran into this tuning through shortwave BC stations with NR enabled with THR and SLP set to 5. I'm using firmware version 3.11. What seems odd to me is that although I can reproduce the audio level increase cases observed by others when NR is enabled, the S-meter indication doesn't change - I suppose that the S-meter pickoff point is upstream of NR? On the flip side you mention, if notch filtering was before AGC as you wish, would you expect the S-meter indication to change when the notch filter is active? Bob NW8L [1] http://www.mail-archive.com/elecraft@mailman.qth.net/msg58245.html [2] http://www.mail-archive.com/elecraft@mailman.qth.net/msg60930.html On Sat, Apr 25, 2009 at 12:55 PM, Joe Subich, W4TV li...@subich.com wrote: It's not working as it should ... there should be no volume change when engaging NR. Noise reduction should work on the audio AFTER AGC. If anything, the test results below should show a very slight drop with NR due to the removal of the unwanted (broadband) components but the peak level should not change. This NR problem is the flip side of the issue with the notch filter ... Notch is working AFTER the AGC where it should work before AGC while NR is working before the AGC where it should work AFTER the AGC. 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 __ 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 Setting the time
Hi Stan, I wrote a simple little program a few months ago to set the K3's clock. That could be what you are remembering. Here is a link to the original post (and all of the follow ups). No KDVR required. :) http://n2.nabble.com/K3-Time-Keeper-v0.1-td2465069.html David, W4SMT --- On Sat, 4/25/09, sr...@swbell.net sr...@swbell.net wrote: From: sr...@swbell.net sr...@swbell.net Subject: [Elecraft] K3 Setting the time To: Elecraft@mailman.qth.net Date: Saturday, April 25, 2009, 9:16 PM I've seen mention of the clock in the K3 being set from the computer. At least this is what I remembered from the posts that I have seen in the past. Can someone explain to me how this is being done? I think I saw the KDVR mentioned as part of a requirement for this. Am I out in left field? Someone help me back to reality. :-) Stan Rife W5EWA __ 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] Elecraft SSB Net Announcement
Hi gang, The weekly Elecraft SSB net will meet tomorrow (Sunday, 4/26/09) at 1800Z. We will start at 14.316 MHz, and QSY if needed. The net control is in western Oregon, but we will need a good east coast or midwest station to relay a few west coast signals that may be too close to net control. See you there. 73, Phil, NS7P __ 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] Elecraft CW Net Announcement
Good Evening, It has been a pleasant if hectic week. From the wonderfully warm and sunny beginning to the chilly and inclement ending it was a typically Oregonian roller coaster ride of weather. Sunny and very warm to snow, hail, rain, and cold. It was not warm enough long enough for the insects to start hatching but they will have their season soon. More flowers and flowering trees are blooming their way up the mountain. I know there are at least two flowering dogwood on this property but I will look for more when they start blooming. Then I can take cuttings to propagate more of them. I also need to replant the wind damaged area after I am done cutting so I plan a mix of trees, shrubs, and flowers. That should keep me busy for a number of years. Propagation was also a roller coaster ride. Some days it was OK but others had both fast and slow QSB with a large portion of noise thrown in making contacts more difficult. Soon it will be antenna repair season so I can collect all the bits of broken antennas and broken guys and get at least one more wire up in the air. Then I can rebuild a vertical dipole to try another take off angle. My antenna switching will turn into an antenna switch board choosing which antenna and which rig. I will need to break it up so I can have multiple radios on different bands using multiple antennas. This will take some thinking to get it designed correctly for ECOM and for casual HF use. Please join us tomorrow evening. 1) Hail signs (first letter or two of the suffix of your call) 2) NCS help (as well as QSP/QNP relay help) Sunday 2300z (Sunday 4 PM PDT) 14050 kHz Monday 0100z (Sunday 6 PM PDT) 7045 kHz Stay healthy, 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
