K3S QST Article
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How about a user adjustable amplifier on set point? In my case there is a
2 watt jump when going from 12 to 13 watts and if a person wanted a smoother output in that range for an amp or whatever it would be possible. John KK9A from: Wayne Burdick n6kr Wes, This would be a simple firmware change, and it might be worth considering. But typically we see -30 dBc or better at 12 W in production with the latest revisions. 73, Wayne N6KR On Oct 15, 2016, at 7:59 AM, Wes Stewart <wes_n7ws at triconet.org> wrote: > ….I would recommend that Elecraft change firmware to set the max power out at 10W (LP) and switch in the KPA100 above 10W, not 12. ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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I have been a loyal Elecrafter for many years, and this seems to be
somewhat similar to the VW diesel problem. Elecraft has sold me a radio specifying it to be in compliance with specifications of IMD. Now you are telling me that I must bear the burden of time and expense to bring the device you specified and guaranteed to be in compliance, into compliance. I built mine from a kit, so Elecraft you send me the necessary boards, modules, whatever to bring my K3s into compliance and I will return to you the defective boards,, modules, whatever. Then you can rework the defective boards for the next exchange. I will spend the time and effort of disassembly and re-assembly. Jim, W4ATK K-line, K2 ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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Now, I may be miss-interpreting what's happening here, but I feel is that
this whole thing is being taken "slightly" wrong by several people. VW purposely faked the test to meet a gov't spec. However, Elecraft sold a radio that DID meet their published specifications for transmit IMD which are typical of other competitive radios on the market. THEN, they figured out a way to make an improvement, which makes them BETTER than the typical radio for this parameter. AND, they're willing to make the mod for free IF you handle shipping. Believe me, the "big-three" would simply come out with a Mark II, or "A" model and leave it at that. And, every time I hear that they did in fact do just that, I'm that much gladder (if that's a word) I have Elecraft's in the shack. If I'm wrong, I'm sure I'll hear about. At which point I would offer a retraction. I have been known to stick my foot in my mouth on more than one occasion. 73, Charlie k3ICH -----Original Message----- From: Elecraft [mailto:[hidden email]] On Behalf Of Jim Rogers Sent: Monday, October 17, 2016 4:42 PM To: [hidden email] Subject: Re: [Elecraft] K3S QST Article I have been a loyal Elecrafter for many years, and this seems to be somewhat similar to the VW diesel problem. Elecraft has sold me a radio specifying it to be in compliance with specifications of IMD. Now you are telling me that I must bear the burden of time and expense to bring the device you specified and guaranteed to be in compliance, into compliance. I built mine from a kit, so Elecraft you send me the necessary boards, modules, whatever to bring my K3s into compliance and I will return to you the defective boards,, modules, whatever. Then you can rework the defective boards for the next exchange. I will spend the time and effort of disassembly and re-assembly. Jim, W4ATK K-line, K2 ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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blockquote, div.yahoo_quoted { margin-left: 0 !important; border-left:1px #715FFA solid !important; padding-left:1ex !important; background-color:white !important; } Hear, Hear!
Bob/AA6VB Sent from Yahoo Mail for iPhone On Monday, October 17, 2016, 4:03 PM, Charlie T, K3ICH <[hidden email]> wrote: Now, I may be miss-interpreting what's happening here, but I feel is that this whole thing is being taken "slightly" wrong by several people. VW purposely faked the test to meet a gov't spec. However, Elecraft sold a radio that DID meet their published specifications for transmit IMD which are typical of other competitive radios on the market. THEN, they figured out a way to make an improvement, which makes them BETTER than the typical radio for this parameter. AND, they're willing to make the mod for free IF you handle shipping. Believe me, the "big-three" would simply come out with a Mark II, or "A" model and leave it at that. And, every time I hear that they did in fact do just that, I'm that much gladder (if that's a word) I have Elecraft's in the shack. If I'm wrong, I'm sure I'll hear about. At which point I would offer a retraction. I have been known to stick my foot in my mouth on more than one occasion. 73, Charlie k3ICH -----Original Message----- From: Elecraft [mailto:[hidden email]] On Behalf Of Jim Rogers Sent: Monday, October 17, 2016 4:42 PM To: [hidden email] Subject: Re: [Elecraft] K3S QST Article I have been a loyal Elecrafter for many years, and this seems to be somewhat similar to the VW diesel problem. Elecraft has sold me a radio specifying it to be in compliance with specifications of IMD. Now you are telling me that I must bear the burden of time and expense to bring the device you specified and guaranteed to be in compliance, into compliance. I built mine from a kit, so Elecraft you send me the necessary boards, modules, whatever to bring my K3s into compliance and I will return to you the defective boards,, modules, whatever. Then you can rework the defective boards for the next exchange. I will spend the time and effort of disassembly and re-assembly. Jim, W4ATK K-line, K2 ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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In reply to this post by James Rogers
Jim,
Elecraft sold you a K3S that *was* in compliance and will still be if you do nothing. See Wayne's post yesterday. They improved the Transmit IMD for the current K3S and are offering to make that change to older K3S. They are going out of their way to add the change to your K3S free of labor charge - all you have to pay for is the shipping. I think that is above and beyond the call of duty. I have not heard of another ham manufacturer that would do anything like that. 73, Don W3FPR On 10/17/2016 4:41 PM, Jim Rogers wrote: > Elecraft has sold me a radio specifying it to be in compliance with > specifications of IMD. Now you are telling me that I must bear the > burden of time and expense to bring the device you specified and > guaranteed to be in compliance, into compliance. > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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In reply to this post by James Rogers
Jim,
Your new rig had nothing "defective." It was "in compliance" when you bought it. Subsequent to your buying it, that particular in-compliance specification has been improved. There is nothing for Elecraft to fix because there is nothing broken. No warranty extends to future improvements. Be thankful Elecraft is offering that improvement at no charge. 73, Kent K9ZTV > On Oct 17, 2016, at 3:41 PM, Jim Rogers <[hidden email]> wrote: > > I have been a loyal Elecrafter for many years, and this seems to be somewhat similar to the VW diesel problem. > > Elecraft has sold me a radio specifying it to be in compliance with specifications of IMD. Now you are telling me that I must bear the burden of time and expense to bring the device you specified and guaranteed to be in compliance, into compliance. > > I built mine from a kit, so Elecraft you send me the necessary boards, modules, whatever to bring my K3s into compliance and I will return to you the defective boards,, modules, whatever. Then you can rework the defective boards for the next exchange. I will spend the time and effort of disassembly and re-assembly. > > Jim, W4ATK > > K-line, K2 > > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [hidden email] > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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In reply to this post by Charlie T, K3ICH
Charlie,
You hit the nail on the head. Mark Musick, WB9CIF -----Original Message----- From: Elecraft [mailto:[hidden email]] On Behalf Of Charlie T, K3ICH Sent: Monday, October 17, 2016 9:04 PM To: [hidden email] Subject: Re: [Elecraft] K3S QST Article Now, I may be miss-interpreting what's happening here, but I feel is that this whole thing is being taken "slightly" wrong by several people. VW purposely faked the test to meet a gov't spec. However, Elecraft sold a radio that DID meet their published specifications for transmit IMD which are typical of other competitive radios on the market. THEN, they figured out a way to make an improvement, which makes them BETTER than the typical radio for this parameter. AND, they're willing to make the mod for free IF you handle shipping. Believe me, the "big-three" would simply come out with a Mark II, or "A" model and leave it at that. And, every time I hear that they did in fact do just that, I'm that much gladder (if that's a word) I have Elecraft's in the shack. If I'm wrong, I'm sure I'll hear about. At which point I would offer a retraction. I have been known to stick my foot in my mouth on more than one occasion. 73, Charlie k3ICH -----Original Message----- From: Elecraft [mailto:[hidden email]] On Behalf Of Jim Rogers Sent: Monday, October 17, 2016 4:42 PM To: [hidden email] Subject: Re: [Elecraft] K3S QST Article I have been a loyal Elecrafter for many years, and this seems to be somewhat similar to the VW diesel problem. Elecraft has sold me a radio specifying it to be in compliance with specifications of IMD. Now you are telling me that I must bear the burden of time and expense to bring the device you specified and guaranteed to be in compliance, into compliance. I built mine from a kit, so Elecraft you send me the necessary boards, modules, whatever to bring my K3s into compliance and I will return to you the defective boards,, modules, whatever. Then you can rework the defective boards for the next exchange. I will spend the time and effort of disassembly and re-assembly. Jim, W4ATK K-line, K2 ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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In reply to this post by James Rogers
Hmm, compliance with what? The rig meets Elecraft specs and since the
FCC doesn't regulate TX IMD there is nothing to comply with. The problem I have is accepting the status quo by Elecraft. Just because everybody else is around -30dB shouldn't mean Elecraft stop trying to do better. Let the portable/backpacking rigs use 12V MOSFETS and switch the desktop model K3(s) to higher voltage finals. Yeah, yeah, I know, the K3(s) is supposed to be portable capable. How many people take their K3(s) out in the sticks...ever...save Field Day? Just because it has a carry strap doesn't mean it's a portable rig. My TS-520 has a beautiful leather strap. It weighs 37 pounds. Anybody know where I can rent a mule? On 10/17/2016 3:41 PM, Jim Rogers wrote: > I have been a loyal Elecrafter for many years, and this seems to be > somewhat similar to the VW diesel problem. > > Elecraft has sold me a radio specifying it to be in compliance with > specifications of IMD. Now you are telling me that I must bear the > burden of time and expense to bring the device you specified and > guaranteed to be in compliance, into compliance. > > I built mine from a kit, so Elecraft you send me the necessary boards, > modules, whatever to bring my K3s into compliance and I will return to > you the defective boards,, modules, whatever. Then you can rework the > defective boards for the next exchange. I will spend the time and > effort of disassembly and re-assembly. > > Jim, W4ATK > > K-line, K2 > > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [hidden email] > -- R. Kevin Stover AC0H ARRL FISTS #11993 SKCC #215 NAQCC #3441 --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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Well one of the main reasons I love my K3S is because of weight (or lack of
it). Due to back problems, I cant move that 40-50 pound rig to the bench to do any adjustments, repair, etc. I can take my K3S to the beach house with ease and have a nice 100 watt radio. Each of us has their own needs and wants in a radio and a 60 pound monster with 200 watts and built in power supply for 48 -60 volts, may not be one of them. Jim K4JAF -----Original Message----- From: Kevin Sent: Monday, October 17, 2016 6:47 PM To: [hidden email] Subject: Re: [Elecraft] K3S QST Article Hmm, compliance with what? The rig meets Elecraft specs and since the FCC doesn't regulate TX IMD there is nothing to comply with. The problem I have is accepting the status quo by Elecraft. Just because everybody else is around -30dB shouldn't mean Elecraft stop trying to do better. Let the portable/backpacking rigs use 12V MOSFETS and switch the desktop model K3(s) to higher voltage finals. Yeah, yeah, I know, the K3(s) is supposed to be portable capable. How many people take their K3(s) out in the sticks...ever...save Field Day? Just because it has a carry strap doesn't mean it's a portable rig. My TS-520 has a beautiful leather strap. It weighs 37 pounds. Anybody know where I can rent a mule? On 10/17/2016 3:41 PM, Jim Rogers wrote: > I have been a loyal Elecrafter for many years, and this seems to be > somewhat similar to the VW diesel problem. > > Elecraft has sold me a radio specifying it to be in compliance with > specifications of IMD. Now you are telling me that I must bear the burden > of time and expense to bring the device you specified and guaranteed to be > in compliance, into compliance. > > I built mine from a kit, so Elecraft you send me the necessary boards, > modules, whatever to bring my K3s into compliance and I will return to you > the defective boards,, modules, whatever. Then you can rework the > defective boards for the next exchange. I will spend the time and effort > of disassembly and re-assembly. > > Jim, W4ATK > > K-line, K2 > > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [hidden email] > -- R. Kevin Stover AC0H ARRL FISTS #11993 SKCC #215 NAQCC #3441 --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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In reply to this post by kstover
On Mon, Oct 17, 2016 at 7:47 PM, Kevin <[hidden email]> wrote:
> The problem I have is accepting the status quo by Elecraft. Just because > everybody else is around -30dB shouldn't mean Elecraft stop trying to do > better. Let the portable/backpacking rigs use 12V MOSFETS and switch the > desktop model K3(s) to higher voltage finals. Yeah, yeah, I know, the K3(s) > is supposed to be portable capable. How many people take their K3(s) out in > the sticks...ever...save Field Day? > Oh yeah. "Just" change the supply voltage. AND the PA. And would that much heat dissipation even fit in the same space? OK. Everybody ready to go out and buy a 28 volt power supply for the new K3S? The range of 12 volt supplies is way, way broader than 28 volt. The Astron LS35M 35A@28VDC is 380 dollars. Oh, a built-in? Where does it go in the case? And does the K3S add an internal inverter to produce 12V for everything else from the 28V? Lot of expense for a small improvement that they can get with a freebee change to a late developing gift improvement for the cost of shipping. What would be a practical way to actually introduce such a change? Lay out all the specifics involved. Let's see your critical path item by item plan. It's cheep and easy to just blurt out "they oughta go to 28 volts." 73, Guy K2AV ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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Our entire product line emphasizes portability, so we'll just have to continue the never-ending search for 12 volt mojo. (Note: the new Upgrade is a case of this; IMD is improved when running from lower voltages.)
Stick with Elecraft and minimize your carbon footprint! 73, Wayne N6KR On Oct 17, 2016, at 5:48 PM, Guy Olinger K2AV <[hidden email]> wrote: > On Mon, Oct 17, 2016 at 7:47 PM, Kevin <[hidden email]> wrote: > >> The problem I have is accepting the status quo by Elecraft. Just because >> everybody else is around -30dB shouldn't mean Elecraft stop trying to do >> better. Let the portable/backpacking rigs use 12V MOSFETS and switch the >> desktop model K3(s) to higher voltage finals. Yeah, yeah, I know, the K3(s) >> is supposed to be portable capable. How many people take their K3(s) out in >> the sticks...ever...save Field Day? >> > > Oh yeah. > > "Just" change the supply voltage. AND the PA. And would that much heat > dissipation even fit in the same space? OK. Everybody ready to go out and > buy a 28 volt power supply for the new K3S? The range of 12 volt supplies > is way, way broader than 28 volt. The Astron LS35M 35A@28VDC is 380 > dollars. Oh, a built-in? Where does it go in the case? > > And does the K3S add an internal inverter to produce 12V for everything > else from the 28V? > > Lot of expense for a small improvement that they can get with a freebee > change to a late developing gift improvement for the cost of shipping. > > What would be a practical way to actually introduce such a change? Lay out > all the specifics involved. Let's see your critical path item by item plan. > It's cheep and easy to just blurt out "they oughta go to 28 volts." > > 73, Guy K2AV ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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Thanks, Wayne. This thread has been very interesting!
73 Matt NQ6N/9 On Mon, Oct 17, 2016 at 10:40 PM, Wayne Burdick <[hidden email]> wrote: > Our entire product line emphasizes portability, so we'll just have to > continue the never-ending search for 12 volt mojo. (Note: the new Upgrade > is a case of this; IMD is improved when running from lower voltages.) > > Stick with Elecraft and minimize your carbon footprint! > > 73, > Wayne > N6KR > > > > On Oct 17, 2016, at 5:48 PM, Guy Olinger K2AV <[hidden email]> wrote: > > > On Mon, Oct 17, 2016 at 7:47 PM, Kevin <[hidden email]> wrote: > > > >> The problem I have is accepting the status quo by Elecraft. Just because > >> everybody else is around -30dB shouldn't mean Elecraft stop trying to do > >> better. Let the portable/backpacking rigs use 12V MOSFETS and switch the > >> desktop model K3(s) to higher voltage finals. Yeah, yeah, I know, the > K3(s) > >> is supposed to be portable capable. How many people take their K3(s) > out in > >> the sticks...ever...save Field Day? > >> > > > > Oh yeah. > > > > "Just" change the supply voltage. AND the PA. And would that much heat > > dissipation even fit in the same space? OK. Everybody ready to go out > and > > buy a 28 volt power supply for the new K3S? The range of 12 volt supplies > > is way, way broader than 28 volt. The Astron LS35M 35A@28VDC is 380 > > dollars. Oh, a built-in? Where does it go in the case? > > > > And does the K3S add an internal inverter to produce 12V for everything > > else from the 28V? > > > > Lot of expense for a small improvement that they can get with a freebee > > change to a late developing gift improvement for the cost of shipping. > > > > What would be a practical way to actually introduce such a change? Lay > out > > all the specifics involved. Let's see your critical path item by item > plan. > > It's cheep and easy to just blurt out "they oughta go to 28 volts." > > > > 73, Guy K2AV > > > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [hidden email] > Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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In reply to this post by kstover
1. W4ATK seems overly indignant about a "compliance" spec he doesn't even understand. 2. And while I've been a bit chagrined about it myself in the past, anybody who doesn't understand that Elecraft's chosen business model is centered around portable gear (which includes motor home and cabin operations as opposed to just backpacking) hasn't been paying attention for the last 20 years. Dave AB7E On 10/17/2016 4:47 PM, Kevin wrote: > Hmm, compliance with what? The rig meets Elecraft specs and since the > FCC doesn't regulate TX IMD there is nothing to comply with. > > The problem I have is accepting the status quo by Elecraft. Just > because everybody else is around -30dB shouldn't mean Elecraft stop > trying to do better. Let the portable/backpacking rigs use 12V MOSFETS > and switch the desktop model K3(s) to higher voltage finals. Yeah, > yeah, I know, the K3(s) is supposed to be portable capable. How many > people take their K3(s) out in the sticks...ever...save Field Day? > > Just because it has a carry strap doesn't mean it's a portable rig. My > TS-520 has a beautiful leather strap. It weighs 37 pounds. Anybody > know where I can rent a mule? > > > On 10/17/2016 3:41 PM, Jim Rogers wrote: >> I have been a loyal Elecrafter for many years, and this seems to be >> somewhat similar to the VW diesel problem. >> >> Elecraft has sold me a radio specifying it to be in compliance with >> specifications of IMD. Now you are telling me that I must bear the >> burden of time and expense to bring the device you specified and >> guaranteed to be in compliance, into compliance. >> >> I built mine from a kit, so Elecraft you send me the necessary >> boards, modules, whatever to bring my K3s into compliance and I will >> return to you the defective boards,, modules, whatever. Then you can >> rework the defective boards for the next exchange. I will spend the >> time and effort of disassembly and re-assembly. >> >> Jim, W4ATK >> >> K-line, K2 >> ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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This is an interesting thread but I wonder about the practicalities... Of
course we all want to emit a clean signal. In which cases might the IMD be a problem? Running full power off a battery with voltage dropping? Running almost full power to drive an older type tube amp? How fast does IMD deteriorate with increased power from the K3S or K3? What are the IMD figures when running 20-25W driving a linear amp. such as the KPA500? 73, Yngvi TF3Y On Tue, Oct 18, 2016 at 7:58 AM, David Gilbert <[hidden email]> wrote: > > 1. W4ATK seems overly indignant about a "compliance" spec he doesn't even > understand. > > 2. And while I've been a bit chagrined about it myself in the past, > anybody who doesn't understand that Elecraft's chosen business model is > centered around portable gear (which includes motor home and cabin > operations as opposed to just backpacking) hasn't been paying attention for > the last 20 years. > > Dave AB7E > > > > On 10/17/2016 4:47 PM, Kevin wrote: > >> Hmm, compliance with what? The rig meets Elecraft specs and since the FCC >> doesn't regulate TX IMD there is nothing to comply with. >> >> The problem I have is accepting the status quo by Elecraft. Just because >> everybody else is around -30dB shouldn't mean Elecraft stop trying to do >> better. Let the portable/backpacking rigs use 12V MOSFETS and switch the >> desktop model K3(s) to higher voltage finals. Yeah, yeah, I know, the K3(s) >> is supposed to be portable capable. How many people take their K3(s) out in >> the sticks...ever...save Field Day? >> >> Just because it has a carry strap doesn't mean it's a portable rig. My >> TS-520 has a beautiful leather strap. It weighs 37 pounds. Anybody know >> where I can rent a mule? >> >> >> On 10/17/2016 3:41 PM, Jim Rogers wrote: >> >>> I have been a loyal Elecrafter for many years, and this seems to be >>> somewhat similar to the VW diesel problem. >>> >>> Elecraft has sold me a radio specifying it to be in compliance with >>> specifications of IMD. Now you are telling me that I must bear the burden >>> of time and expense to bring the device you specified and guaranteed to be >>> in compliance, into compliance. >>> >>> I built mine from a kit, so Elecraft you send me the necessary boards, >>> modules, whatever to bring my K3s into compliance and I will return to you >>> the defective boards,, modules, whatever. Then you can rework the defective >>> boards for the next exchange. I will spend the time and effort of >>> disassembly and re-assembly. >>> >>> Jim, W4ATK >>> >>> K-line, K2 >>> >>> > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [hidden email] > -- http://www.tf3y.net ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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In reply to this post by kstover
Since June, my K3 went out for the California QSO Party (CQP), a
special event station from Ely NV, and field day. Field day and CQP were solar powered battery. The Ely event ended up being battery because the generator was putting out S9 noise. The field day was QRP while CQP and Ely were at 100W. Being able to drop back to battery saved our bacon in Ely. For all these events, and in the shack, I am very glad to have a radio with the ease of use of the K3, which IMHO, is better than my KX3. On 10/17/16 at 4:47 PM, [hidden email] (Kevin) wrote: >How many people take their K3(s) out in the >sticks...ever...save Field Day? ----------------------------------------------------------------------- Bill Frantz | Can't fix stupid, but duct | Periwinkle (408)356-8506 | tape can muffle the sound... | 16345 Englewood Ave www.pwpconsult.com | - Bill Liebman | Los Gatos, CA 95032 ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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In reply to this post by Guy Olinger K2AV
On 10/17/2016 8:48 PM, Guy Olinger K2AV wrote: > > What would be a practical way to actually introduce such a change? Lay out > all the specifics involved. Let's see your critical path item by item plan. > It's cheep and easy to just blurt out "they oughta go to 28 volts." Provide an *optional* 28V PA that would drop into the existing space. If heat and/or maximum gain are an issue, it does not need to be specified for 200 W output ... 150/160 is good enough. As to power supplies, Yaesu had a dual voltage switching supply for the FT-1000MP MK V for many years. A "KPA4" could certainly have its own 28V connection to avoid changes to the K3/K3S (the present design keeps 13.8V on the PA all the time). Once one has a 28V option, the K3/K3S controller can be modified to limit power from the 12V KPA3A/KPA3B to 80 watts max which should further decrease IMD by keeping the FETs out of compression. Most published power transistor/FET data sheets show a sweet spot for IMD at around 60 - 80% of the CW ratings. 73, ... Joe, W4TV ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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In reply to this post by Yngvi (TF3Y)
On Tue,10/18/2016 3:43 AM, Yngvi (TF3Y) wrote:
> How fast does IMD deteriorate with increased power from the K3S or K3? > > What are the IMD figures when running 20-25W driving a linear amp. such as > the KPA500? I've looked carefully at this, and so has my neighbor Bob Wolbert, K6XX, who is an engineer at Elecraft and a serious contester. The first link shows my measurements, the second is a pdf of the slides for a talk that K6XX gave to NCCC three years ago. It includes measured data showing how TX power out and DC voltage affect IMD. In my measurements, increased IMD causes CW bandwidth to increase. You can see that difference by comparing measurements at 30W, 50W, and 100W. http://k9yc.com/P3_Spectrum_Measurements.pdf http://k9yc.com/K6XXAmpTalk.pdf 73, Jim K9YC ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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In reply to this post by Bill Frantz
Like Bill, I operate with several other hams for Field Day, CQP, 7QP
(7th Area QSO Party), and VHF grid trips. Field Day is a single K3 for HF and a KX3 for the VHF station. We run 1A battery/solar. CQP and 7QP are multi-transmitter, K3/P3SVGA/KPA500 and run from Honda 2000i generators. These very nice generators DO produce some noise, and need a serious common mode choke on their output if they are close to antennas. (We operate from very quiet places in the middle of nowhere). When running power, we have double stubs on the output of the KPA500s feeding antennas for 80CW and 40CW, where the harmonics land on the next higher band. There are photos of our setup from 7QP at k9yc.com/7QP.pdf 73, Jim K9YC On Tue,10/18/2016 6:04 AM, Bill Frantz wrote: > Since June, my K3 went out for the California QSO Party (CQP), a > special event station from Ely NV, and field day. Field day and CQP > were solar powered battery. ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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In reply to this post by john@kk9a.com
To all who responded, certainly my friend Don and others....
"During initial testing, we found that the second harmonic on 17 meters measured 42 dB below the fundamental, well below the specified >50 dB we measured on the other bands. We returned the transceiver to Elecraft for repair and they brought it into spec." Bob Allison, WB1GCM Assistant ARRL Laboratory Manager, QST (Nov 2016) p.50 sidebar. Elecraft K3s Operators manual pg. 9 "Harmonic Spurious Outputs >50 dB below carrier @ 100W (>60 dB on 6 meters). Just sayin' if that is the case with my K3s s/n 10271, send me the necessary board/module(s) to correct the situation and I will be more than happy to make the replacement in my K3s and return the defective units to Elecraft for rework. Just don't ask me to send the whole radio back for something I can accomplish in the field. I am not angry, perhaps a bit dissappointed. I love my K-Line, which originated with a K3 and when the K3s came out, I elected to buy a K3s rather than upgrade my K3. Tell me my radio meets the spec and does not need repair to meet the spec and I am a happy camper. Jim, W4ATK ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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Hi Jim - The 17 m harmonic problem was limited to the single review unit, which
we corrected. All others shipped were/are OK on 17M. 73, Eric /elecraft.com/ On 10/18/2016 11:38 AM, Jim Rogers wrote: > To all who responded, certainly my friend Don and others.... > > "During initial testing, we found that the second harmonic on 17 meters > measured 42 dB below the fundamental, well below the specified >50 dB we > measured on the other bands. We returned the transceiver to Elecraft for > repair and they brought it into spec." Bob Allison, WB1GCM Assistant ARRL > Laboratory Manager, QST (Nov 2016) p.50 sidebar. > > Elecraft K3s Operators manual pg. 9 "Harmonic Spurious Outputs >50 dB below > carrier @ 100W (>60 dB on 6 meters). > > Just sayin' if that is the case with my K3s s/n 10271, send me the necessary > board/module(s) to correct the situation and I will be more than happy to make > the replacement in my K3s and return the defective units to Elecraft for > rework. Just don't ask me to send the whole radio back for something I can > accomplish in the field. > > I am not angry, perhaps a bit dissappointed. I love my K-Line, which > originated with a K3 and when the K3s came out, I elected to buy a K3s rather > than upgrade my K3. Tell me my radio meets the spec and does not need repair > to meet the spec and I am a happy camper. > > Jim, W4ATK > > > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [hidden email] > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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