Re: [Elecraft] BIZARRE OFFERING FROM MFJ
Hi, it never occurred to me put anything non-E;ecraft to my fully loaded K3 radio. I smept damn much for my K3 so would it be stupid and risky to waste it by MFJ or even chinese crap. - 73 - Petr, OK1RP "Apple & Elecraft freak" B:http://ok1rp.blogspot.com G+:http://goo.gl/w3u2s9 G+: http://goo.gl/gP99xq -- Sent from: http://elecraft.365791.n2.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] BIZARRE OFFERING FROM MFJ
I remember the bright yellow glow from the final in my Heathkit DX-40 when I forgot to connect the antenna. At least the plate didn't melt and the tube still worked. I had a 100W K3 with no tuner and one of my antennas needed a tuner, probably for 30M. I used the T1, with the caveat that I would always lower the power when running through it. Well, I screwed up one time. I think what I noticed was that as my PSK31 macro ran, the SWR kept rising. I think I got the cores hot enough to change their magnetic properties. When they cooled off, everything went back to normal. But as I said, Elecraft equipment tends to survive forays well outside their specs. 73 Bill AE6JV On 4/7/19 at 11:47 AM, n...@elecraft.com (Wayne Burdick) wrote: Bill Frantz wrote: (I won't mention... too late! the time I ran 100W through a T1 tuner. It wasn't for long and the tuner survived.) Ouch. We did T1 tests at 50 W to make sure it could handle 20 W, and even that was an invitation-only event, with observers at a distance wearing safety goggles. How long it would survive a KPA1500 is left as an exercise for the reader. I'm imagining a soft blue glow from the toroids. --- Bill Frantz| Security is like Government | Periwinkle (408)356-8506 | services. The market doesn't | 16345 Englewood Ave www.pwpconsult.com | want to pay for them.| Los Gatos, CA 95032 __ 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] BIZARRE OFFERING FROM MFJ
Hi Barry, The basic algorithm was developed for the KAT2, but it has morphed into several variations for our different tuners, including the T1, KAT1/2/3/3A/100/500/1500, and KXAT1/2/3/100. It's all about "pruning the search tree," to borrow a term from game theory. 73, Wayne N6KR > On Apr 7, 2019, at 3:14 PM, Barry wrote: > > Wayne, >Is that same algorithm and code in the KX3 and K3s?? > > 73, > Barry > K3NDM > > -- Original Message -- > From: "Wayne Burdick" > To: "Dr. William J. Schmidt" > Cc: "Elecraft Reflector" > Sent: 4/7/2019 12:32:03 PM > Subject: Re: [Elecraft] BIZARRE OFFERING FROM MFJ > >>> On Apr 7, 2019, at 9:15 AM, Dr. William J. Schmidt >>> wrote: >>> >>> There isn't really much in the way of smarts on the clone board. It's >>> simply the tuner elements (coils and capacitors), a few relays, the relay >>> driver chips, and gas tubes. The actual tuning smarts comes from elsewhere >>> within the K3. This isn’t much of a stretch for a clone. >>> >> >> >> That's correct. The heart of any binary-weighted L-network ATU is in the >> firmware, which we've been improving since I first wrote the code for the >> KAT2. The latest incarnation of this code is in the KAT1500, the ATU >> included in the KPA1500 amp. My colleague K6KR has done a great job of >> tweaking the algorithm to eek out that last tenth of an SWR unit on every >> match. >> >> 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] BIZARRE OFFERING FROM MFJ
Wayne, Is that same algorithm and code in the KX3 and K3s?? 73, Barry K3NDM -- Original Message -- From: "Wayne Burdick" To: "Dr. William J. Schmidt" Cc: "Elecraft Reflector" Sent: 4/7/2019 12:32:03 PM Subject: Re: [Elecraft] BIZARRE OFFERING FROM MFJ On Apr 7, 2019, at 9:15 AM, Dr. William J. Schmidt wrote: There isn't really much in the way of smarts on the clone board. It's simply the tuner elements (coils and capacitors), a few relays, the relay driver chips, and gas tubes. The actual tuning smarts comes from elsewhere within the K3. This isn’t much of a stretch for a clone. That's correct. The heart of any binary-weighted L-network ATU is in the firmware, which we've been improving since I first wrote the code for the KAT2. The latest incarnation of this code is in the KAT1500, the ATU included in the KPA1500 amp. My colleague K6KR has done a great job of tweaking the algorithm to eek out that last tenth of an SWR unit on every match. Wayne N6KR -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Doug Person Sent: Sunday, April 7, 2019 11:00 AM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] BIZARRE OFFERING FROM MFJ MFJ has been a leader in automatic tuner technology for years. It was probably a very simple engineering process for them to use what they have to create a K3 tuner. You may have a dislike of MFJ products. But, that doesn't preclude the fact that their tuners work very well. They have been selling the K3 tuner for years. It doesn't seem the least bit surprising given the modular nature of the K3 and the long history MFJ has with automatic tuner technology. Maybe it's actually a complement to Elecraft that MFJ takes the K3 so seriously. Doug --KJØF On 4/7/2019 10:26 AM, KENT TRIMBLE wrote: Ozarkcon yesterday. Break-time. Pile of MFJ catalogs on a table. Took one back to my seat to kill time. Opened it up to the second page and in the lower left corner is a box-ad with the following: "MFJ ATU PC Board for Elecraft K-3 Rig. MFJ-950K3 is a super clone of the KAT3 optional tuning board for the superb Elecraft K3 transceiver. MFJ-950K3 is a direct plug-in PC board for the Elecraft K3 10 Watt or 100 Watt model. Covers 1.8 to 54 MHz. This automatic antenna tuner PC board features an L-Match design and can match SWR up to 10:1. It handles 100 Watts. The ATU PC board has a second antenna port, and a sub-rx SMA port. All antenna ports are protected with gas discharge tubes. Super sensitive relay allows excellent low current drain. MFJ-950K3 is 4W x 3 1/2H x 1 1/4D inches and easily slides right into the K3’s tuning board slot. Weighs less than 1/2 pound. Pick up this great accessory for your K3 today and save $$$!" What in the world is that all about? What possible market are they shooting at? Who would put anything "MFJ" in anything Elecraft? Someone enlighten me! Did I sleep through April 1st? https://www.mfjenterprises.com/Product.php?productid=MFJ-950K3 73, Kent K9ZTV __ 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] BIZARRE OFFERING FROM MFJ
Actually keeping this thread open is a better thing... It lets Elecraft users see what other options are available... That said-- I know I would never add an MFJ item to my K3. The fact Elecraft has allowed this thread to continue shows how open minded Elecraft is, and how sure of their product they are... 73s and thanks, Dave (NK7Z) https://www.nk7z.net ARRL Technical Specialist ARRL Volunteer Examiner ARRL OOC for Oregon On 4/7/19 11:47 AM, Wayne Burdick wrote: Bill Frantz wrote: (I won't mention... too late! the time I ran 100W through a T1 tuner. It wasn't for long and the tuner survived.) Ouch. We did T1 tests at 50 W to make sure it could handle 20 W, and even that was an invitation-only event, with observers at a distance wearing safety goggles. How long it would survive a KPA1500 is left as an exercise for the reader. I'm imagining a soft blue glow from the toroids. 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 __ 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] BIZARRE OFFERING FROM MFJ
Folks, we exceeding the single topic limit number of posts and its also a long delayed repeat of a prior thread from over a year or two ago. Let's close it in the interest of relieving email overload for our other readers. Feel free to search the nabble archive of the list for prior posts on this topic. Its also outside of the list guidelines to criticize other manufacturer's products here. 73, Eric Moderator, from time to time elecraft.com _..._ > On Apr 7, 2019, at 10:22 AM, Alan Bloom wrote: > > I've long had mixed feelings about MFJ. They have some very > interesting, innovative, and cost-competitive products. However > sometimes the quality isn't there. For example I have an MFJ antenna > analyzer that was intermittent until I fixed a poor ground connection. > I forget the details, but as I recall the problem was partly one of > design. > > Alan N1AL > >> On 2019-04-07 09:28, Wayne Burdick wrote: >> >> I've used many MFJ products and in have had very little trouble with any of >> them. For example, I make frequent use an MFJ-223 hand-held VNA -- it's >> versatile and does the job. I've also used their manual tuners, antenna >> switches, and portable/mobile whips. They have a very comprehensive product >> line that's really unique in the industry. >> >> That said, I do have some suggestions for MFJ's engineering team on how they >> might improve their ATU. >> >> Looking at the photo, I see that they used much smaller toroidal cores for 5 >> of the 8 inductors in the L network. This could result in excessive heating, >> especially on the higher bands, at full power into a worst-case match. We >> specified T68 sized cores to remain conservative based on extensive testing. >> Also, if you click on the photo to see the details, you'll see what appears >> to be very inconsistent hand soldering of the SMD components. While this >> doesn't necessarily worsen performance or reliability, it should be done in >> a way that inspires confidence in the buyer. (Easy for me to say, of course. >> We have the luxury of mass-producing these assemblies using automated >> pick-and-place equipment at our fabricator in Monterey.) >> >> 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 __ 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] BIZARRE OFFERING FROM MFJ
Bill Frantz wrote: > (I won't mention... too late! > the time I ran 100W through a T1 tuner. It wasn't for long and the tuner > survived.) Ouch. We did T1 tests at 50 W to make sure it could handle 20 W, and even that was an invitation-only event, with observers at a distance wearing safety goggles. How long it would survive a KPA1500 is left as an exercise for the reader. I'm imagining a soft blue glow from the toroids. 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] BIZARRE OFFERING FROM MFJ
I had to re-solder the ground connection on the SO-239 connector on my MFJ antenna analyser. That's the only problem I've had with it. Getting a good connection on large chunks of metal is difficult, and takes a lot of heat. I've always considered that the MFJ products meet their specifications, while the Elecraft ones exceed them. (I won't mention the time I ran 100W through a T1 tuner. It wasn't for long and the tuner survived.) 73 Bill AE6JV On 4/7/19 at 9:28 AM, n...@elecraft.com (Wayne Burdick) wrote: Also, if you click on the photo to see the details, you'll see what appears to be very inconsistent hand soldering of the SMD components. --- Bill Frantz| If the site is supported by | Periwinkle (408)356-8506 | ads, you are the product.| 16345 Englewood Ave www.pwpconsult.com | | Los Gatos, CA 95032 __ 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] BIZARRE OFFERING FROM MFJ
Correct. Wayne > On Apr 7, 2019, at 11:32 AM, hawley, charles j jr > wrote: > > I take it this is a KAT3 clone, not a KAT3A improved version. > > Chuck Hawley > c-haw...@illinois.edu > > Amateur Radio, KE9UW > aka Jack, BMW Motorcycles > > From: elecraft-boun...@mailman.qth.net on > behalf of Wayne Burdick > Sent: Sunday, April 7, 2019 11:28 AM > To: Doug Person > Cc: Elecraft Reflector > Subject: Re: [Elecraft] BIZARRE OFFERING FROM MFJ > > I've used many MFJ products and in have had very little trouble with any of > them. For example, I make frequent use an MFJ-223 hand-held VNA -- it's > versatile and does the job. I've also used their manual tuners, antenna > switches, and portable/mobile whips. They have a very comprehensive product > line that's really unique in the industry. > > That said, I do have some suggestions for MFJ's engineering team on how they > might improve their ATU. > > Looking at the photo, I see that they used much smaller toroidal cores for 5 > of the 8 inductors in the L network. This could result in excessive heating, > especially on the higher bands, at full power into a worst-case match. We > specified T68 sized cores to remain conservative based on extensive testing. > Also, if you click on the photo to see the details, you'll see what appears > to be very inconsistent hand soldering of the SMD components. While this > doesn't necessarily worsen performance or reliability, it should be done in a > way that inspires confidence in the buyer. (Easy for me to say, of course. We > have the luxury of mass-producing these assemblies using automated > pick-and-place equipment at our fabricator in Monterey.) > > Wayne > N6KR > > > > > On Apr 7, 2019, at 9:00 AM, Doug Person wrote: > > > > MFJ has been a leader in automatic tuner technology for years. It was > > probably a very simple engineering process for them to use what they have > > to create a K3 tuner. You may have a dislike of MFJ products. But, that > > doesn't preclude the fact that their tuners work very well. They have been > > selling the K3 tuner for years. It doesn't seem the least bit surprising > > given the modular nature of the K3 and the long history MFJ has with > > automatic tuner technology. Maybe it's actually a complement to Elecraft > > that MFJ takes the K3 so seriously. > > > > Doug --KJØF > > > > On 4/7/2019 10:26 AM, KENT TRIMBLE wrote: > >> Ozarkcon yesterday. Break-time. Pile of MFJ catalogs on a table. Took > >> one back to my seat to kill time. Opened it up to the second page and in > >> the lower left corner is a box-ad with the following: > >> > >> > >> "MFJ ATU PC Board for Elecraft K-3 Rig. MFJ-950K3 is a super clone of the > >> KAT3 optional tuning board for the superb Elecraft K3 transceiver. > >> MFJ-950K3 is a direct plug-in PC board for the Elecraft K3 10 Watt or 100 > >> Watt model. Covers 1.8 to 54 MHz. This automatic antenna tuner PC board > >> features an L-Match design and can match SWR up to 10:1. It handles 100 > >> Watts. The ATU PC board has a second antenna port, and a sub-rx SMA port. > >> All antenna ports are protected with gas discharge tubes. Super > >> sensitive relay allows excellent low current drain. MFJ-950K3 is 4W x 3 > >> 1/2H x 1 1/4D inches and easily slides right into the K3’s tuning board > >> slot. Weighs less than 1/2 pound. Pick up this great accessory for your > >> K3 today and save $$$!" > >> > >> > >> What in the world is that all about? What possible market are they > >> shooting at? Who would put anything "MFJ" in anything Elecraft? > >> > >> Someone enlighten me! Did I sleep through April 1st? > >> > >> https://www.mfjenterprises.com/Product.php?productid=MFJ-950K3 > >> > >> 73, > >> > >> Kent K9ZTV > > > > __ > 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] BIZARRE OFFERING FROM MFJ
I take it this is a KAT3 clone, not a KAT3A improved version. Chuck Hawley c-haw...@illinois.edu Amateur Radio, KE9UW aka Jack, BMW Motorcycles From: elecraft-boun...@mailman.qth.net on behalf of Wayne Burdick Sent: Sunday, April 7, 2019 11:28 AM To: Doug Person Cc: Elecraft Reflector Subject: Re: [Elecraft] BIZARRE OFFERING FROM MFJ I've used many MFJ products and in have had very little trouble with any of them. For example, I make frequent use an MFJ-223 hand-held VNA -- it's versatile and does the job. I've also used their manual tuners, antenna switches, and portable/mobile whips. They have a very comprehensive product line that's really unique in the industry. That said, I do have some suggestions for MFJ's engineering team on how they might improve their ATU. Looking at the photo, I see that they used much smaller toroidal cores for 5 of the 8 inductors in the L network. This could result in excessive heating, especially on the higher bands, at full power into a worst-case match. We specified T68 sized cores to remain conservative based on extensive testing. Also, if you click on the photo to see the details, you'll see what appears to be very inconsistent hand soldering of the SMD components. While this doesn't necessarily worsen performance or reliability, it should be done in a way that inspires confidence in the buyer. (Easy for me to say, of course. We have the luxury of mass-producing these assemblies using automated pick-and-place equipment at our fabricator in Monterey.) Wayne N6KR > On Apr 7, 2019, at 9:00 AM, Doug Person wrote: > > MFJ has been a leader in automatic tuner technology for years. It was > probably a very simple engineering process for them to use what they have to > create a K3 tuner. You may have a dislike of MFJ products. But, that doesn't > preclude the fact that their tuners work very well. They have been selling > the K3 tuner for years. It doesn't seem the least bit surprising given the > modular nature of the K3 and the long history MFJ has with automatic tuner > technology. Maybe it's actually a complement to Elecraft that MFJ takes the > K3 so seriously. > > Doug --KJØF > > On 4/7/2019 10:26 AM, KENT TRIMBLE wrote: >> Ozarkcon yesterday. Break-time. Pile of MFJ catalogs on a table. Took one >> back to my seat to kill time. Opened it up to the second page and in the >> lower left corner is a box-ad with the following: >> >> >> "MFJ ATU PC Board for Elecraft K-3 Rig. MFJ-950K3 is a super clone of the >> KAT3 optional tuning board for the superb Elecraft K3 transceiver. >> MFJ-950K3 is a direct plug-in PC board for the Elecraft K3 10 Watt or 100 >> Watt model. Covers 1.8 to 54 MHz. This automatic antenna tuner PC board >> features an L-Match design and can match SWR up to 10:1. It handles 100 >> Watts. The ATU PC board has a second antenna port, and a sub-rx SMA port. >> All antenna ports are protected with gas discharge tubes. Super sensitive >> relay allows excellent low current drain. MFJ-950K3 is 4W x 3 1/2H x 1 1/4D >> inches and easily slides right into the K3’s tuning board slot. Weighs less >> than 1/2 pound. Pick up this great accessory for your K3 today and save >> $$$!" >> >> >> What in the world is that all about? What possible market are they shooting >> at? Who would put anything "MFJ" in anything Elecraft? >> >> Someone enlighten me! Did I sleep through April 1st? >> >> https://www.mfjenterprises.com/Product.php?productid=MFJ-950K3 >> >> 73, >> >> Kent K9ZTV __ 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] BIZARRE OFFERING FROM MFJ
Somebody pls close this thread! -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of W2xj Sent: Sunday, April 7, 2019 2:22 PM To: Alan Bloom Cc: Elecraft Reflector Subject: Re: [Elecraft] BIZARRE OFFERING FROM MFJ Mighty fine junk Sent from my iPhone > On Apr 7, 2019, at 10:22, Alan Bloom wrote: > > I've long had mixed feelings about MFJ. They have some very > interesting, innovative, and cost-competitive products. However > sometimes the quality isn't there. For example I have an MFJ antenna > analyzer that was intermittent until I fixed a poor ground connection. > I forget the details, but as I recall the problem was partly one of > design. > > Alan N1AL > >> On 2019-04-07 09:28, Wayne Burdick wrote: >> >> I've used many MFJ products and in have had very little trouble with any of them. For example, I make frequent use an MFJ-223 hand-held VNA -- it's versatile and does the job. I've also used their manual tuners, antenna switches, and portable/mobile whips. They have a very comprehensive product line that's really unique in the industry. >> >> That said, I do have some suggestions for MFJ's engineering team on how they might improve their ATU. >> >> Looking at the photo, I see that they used much smaller toroidal >> cores for 5 of the 8 inductors in the L network. This could result in >> excessive heating, especially on the higher bands, at full power into >> a worst-case match. We specified T68 sized cores to remain >> conservative based on extensive testing. Also, if you click on the >> photo to see the details, you'll see what appears to be very >> inconsistent hand soldering of the SMD components. While this doesn't >> necessarily worsen performance or reliability, it should be done in a >> way that inspires confidence in the buyer. (Easy for me to say, of >> course. We have the luxury of mass-producing these assemblies using >> automated pick-and-place equipment at our fabricator in Monterey.) >> >> 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 > __ 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] BIZARRE OFFERING FROM MFJ
Mighty fine junk Sent from my iPhone > On Apr 7, 2019, at 10:22, Alan Bloom wrote: > > I've long had mixed feelings about MFJ. They have some very > interesting, innovative, and cost-competitive products. However > sometimes the quality isn't there. For example I have an MFJ antenna > analyzer that was intermittent until I fixed a poor ground connection. > I forget the details, but as I recall the problem was partly one of > design. > > Alan N1AL > >> On 2019-04-07 09:28, Wayne Burdick wrote: >> >> I've used many MFJ products and in have had very little trouble with any of >> them. For example, I make frequent use an MFJ-223 hand-held VNA -- it's >> versatile and does the job. I've also used their manual tuners, antenna >> switches, and portable/mobile whips. They have a very comprehensive product >> line that's really unique in the industry. >> >> That said, I do have some suggestions for MFJ's engineering team on how they >> might improve their ATU. >> >> Looking at the photo, I see that they used much smaller toroidal cores for 5 >> of the 8 inductors in the L network. This could result in excessive heating, >> especially on the higher bands, at full power into a worst-case match. We >> specified T68 sized cores to remain conservative based on extensive testing. >> Also, if you click on the photo to see the details, you'll see what appears >> to be very inconsistent hand soldering of the SMD components. While this >> doesn't necessarily worsen performance or reliability, it should be done in >> a way that inspires confidence in the buyer. (Easy for me to say, of course. >> We have the luxury of mass-producing these assemblies using automated >> pick-and-place equipment at our fabricator in Monterey.) >> >> 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 > __ 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] BIZARRE OFFERING FROM MFJ
Maybe because the discussion referenced what the clone referenced? K9ZTV > On Apr 7, 2019, at 11:43 AM, j...@kk9a.com wrote: > > The K3 has been out of production for four years, why is the top of the line > Elecraft transceiver still commonly refereed to as a K3 and not a K3S? > > John KK9A - PJ4R in last weekend's WPX where I used my K3S. > > > Kent K9ZTV wrote: > > > "MFJ ATU PC Board for Elecraft K-3 Rig. MFJ-950K3 is a super clone of > the KAT3 optional tuning board for the superb Elecraft K3 transceiver. > MFJ-950K3 is a direct plug-in PC board for the Elecraft K3 10 Watt or > 100 Watt model. Covers 1.8 to 54 MHz. This automatic antenna tuner PC > board features an L-Match design and can match SWR up to 10:1. It > handles 100 Watts. The ATU PC board has a second antenna port, and a > sub-rx SMA port. All antenna ports are protected with gas discharge > tubes. Super sensitive relay allows excellent low current drain. > MFJ-950K3 is 4W x 3 1/2H x 1 1/4D inches and easily slides right into > the K3’s tuning board slot. Weighs less than 1/2 pound. Pick up this > great accessory for your K3 today and save $$$!" > > > What in the world is that all about? What possible market are they > shooting at? Who would put anything "MFJ" in anything Elecraft? > > > https://www.mfjenterprises.com/Product.php?productid=MFJ-950K3 > > 73, > > Kent K9ZTV > > __ > 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] BIZARRE OFFERING FROM MFJ
I've long had mixed feelings about MFJ. They have some very interesting, innovative, and cost-competitive products. However sometimes the quality isn't there. For example I have an MFJ antenna analyzer that was intermittent until I fixed a poor ground connection. I forget the details, but as I recall the problem was partly one of design. Alan N1AL On 2019-04-07 09:28, Wayne Burdick wrote: > I've used many MFJ products and in have had very little trouble with any of > them. For example, I make frequent use an MFJ-223 hand-held VNA -- it's > versatile and does the job. I've also used their manual tuners, antenna > switches, and portable/mobile whips. They have a very comprehensive product > line that's really unique in the industry. > > That said, I do have some suggestions for MFJ's engineering team on how they > might improve their ATU. > > Looking at the photo, I see that they used much smaller toroidal cores for 5 > of the 8 inductors in the L network. This could result in excessive heating, > especially on the higher bands, at full power into a worst-case match. We > specified T68 sized cores to remain conservative based on extensive testing. > Also, if you click on the photo to see the details, you'll see what appears > to be very inconsistent hand soldering of the SMD components. While this > doesn't necessarily worsen performance or reliability, it should be done in a > way that inspires confidence in the buyer. (Easy for me to say, of course. We > have the luxury of mass-producing these assemblies using automated > pick-and-place equipment at our fabricator in Monterey.) > > 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
[Elecraft] BIZARRE OFFERING FROM MFJ
The K3 has been out of production for four years, why is the top of the line Elecraft transceiver still commonly refereed to as a K3 and not a K3S? John KK9A - PJ4R in last weekend's WPX where I used my K3S. Kent K9ZTV wrote: "MFJ ATU PC Board for Elecraft K-3 Rig. MFJ-950K3 is a super clone of the KAT3 optional tuning board for the superb Elecraft K3 transceiver. MFJ-950K3 is a direct plug-in PC board for the Elecraft K3 10 Watt or 100 Watt model. Covers 1.8 to 54 MHz. This automatic antenna tuner PC board features an L-Match design and can match SWR up to 10:1. It handles 100 Watts. The ATU PC board has a second antenna port, and a sub-rx SMA port. All antenna ports are protected with gas discharge tubes. Super sensitive relay allows excellent low current drain. MFJ-950K3 is 4W x 3 1/2H x 1 1/4D inches and easily slides right into the K3’s tuning board slot. Weighs less than 1/2 pound. Pick up this great accessory for your K3 today and save $$$!" What in the world is that all about? What possible market are they shooting at? Who would put anything "MFJ" in anything Elecraft? https://www.mfjenterprises.com/Product.php?productid=MFJ-950K3 73, Kent K9ZTV __ 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] BIZARRE OFFERING FROM MFJ
> On Apr 7, 2019, at 9:15 AM, Dr. William J. Schmidt wrote: > > There isn't really much in the way of smarts on the clone board. It's simply > the tuner elements (coils and capacitors), a few relays, the relay driver > chips, and gas tubes. The actual tuning smarts comes from elsewhere within > the K3. This isn’t much of a stretch for a clone. > That's correct. The heart of any binary-weighted L-network ATU is in the firmware, which we've been improving since I first wrote the code for the KAT2. The latest incarnation of this code is in the KAT1500, the ATU included in the KPA1500 amp. My colleague K6KR has done a great job of tweaking the algorithm to eek out that last tenth of an SWR unit on every match. Wayne N6KR > > -Original Message- > From: elecraft-boun...@mailman.qth.net > [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Doug Person > Sent: Sunday, April 7, 2019 11:00 AM > To: elecraft@mailman.qth.net > Subject: Re: [Elecraft] BIZARRE OFFERING FROM MFJ > > MFJ has been a leader in automatic tuner technology for years. It was > probably a very simple engineering process for them to use what they have to > create a K3 tuner. You may have a dislike of MFJ products. But, that doesn't > preclude the fact that their tuners work very well. They have been selling > the K3 tuner for years. It doesn't seem the least bit surprising given the > modular nature of the K3 and the long history MFJ has with automatic tuner > technology. Maybe it's actually a complement to Elecraft that MFJ takes the > K3 so seriously. > > Doug --KJØF > > On 4/7/2019 10:26 AM, KENT TRIMBLE wrote: >> Ozarkcon yesterday. Break-time. Pile of MFJ catalogs on a table. Took >> one back to my seat to kill time. Opened it up to the second page and >> in the lower left corner is a box-ad with the following: >> >> >> "MFJ ATU PC Board for Elecraft K-3 Rig. MFJ-950K3 is a super clone of >> the KAT3 optional tuning board for the superb Elecraft K3 transceiver. >> MFJ-950K3 is a direct plug-in PC board for the Elecraft >> K3 10 Watt or 100 Watt model. Covers 1.8 to 54 MHz. This automatic >> antenna tuner PC board features an L-Match design and can match SWR up >> to 10:1. It handles 100 Watts. The ATU PC board has a second antenna >> port, and a sub-rx SMA port. All antenna ports are protected with gas >> discharge tubes. Super sensitive relay allows excellent low current >> drain. MFJ-950K3 is 4W x 3 1/2H x 1 1/4D inches and easily slides >> right into the K3’s tuning board slot. Weighs less than 1/2 pound. >> Pick up this great accessory for your K3 today and save $$$!" >> >> >> What in the world is that all about? What possible market are they >> shooting at? Who would put anything "MFJ" in anything Elecraft? >> >> Someone enlighten me! Did I sleep through April 1st? >> >> https://www.mfjenterprises.com/Product.php?productid=MFJ-950K3 >> >> 73, >> >> Kent K9ZTV __ 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] BIZARRE OFFERING FROM MFJ
I've used many MFJ products and in have had very little trouble with any of them. For example, I make frequent use an MFJ-223 hand-held VNA -- it's versatile and does the job. I've also used their manual tuners, antenna switches, and portable/mobile whips. They have a very comprehensive product line that's really unique in the industry. That said, I do have some suggestions for MFJ's engineering team on how they might improve their ATU. Looking at the photo, I see that they used much smaller toroidal cores for 5 of the 8 inductors in the L network. This could result in excessive heating, especially on the higher bands, at full power into a worst-case match. We specified T68 sized cores to remain conservative based on extensive testing. Also, if you click on the photo to see the details, you'll see what appears to be very inconsistent hand soldering of the SMD components. While this doesn't necessarily worsen performance or reliability, it should be done in a way that inspires confidence in the buyer. (Easy for me to say, of course. We have the luxury of mass-producing these assemblies using automated pick-and-place equipment at our fabricator in Monterey.) Wayne N6KR > On Apr 7, 2019, at 9:00 AM, Doug Person wrote: > > MFJ has been a leader in automatic tuner technology for years. It was > probably a very simple engineering process for them to use what they have to > create a K3 tuner. You may have a dislike of MFJ products. But, that doesn't > preclude the fact that their tuners work very well. They have been selling > the K3 tuner for years. It doesn't seem the least bit surprising given the > modular nature of the K3 and the long history MFJ has with automatic tuner > technology. Maybe it's actually a complement to Elecraft that MFJ takes the > K3 so seriously. > > Doug --KJØF > > On 4/7/2019 10:26 AM, KENT TRIMBLE wrote: >> Ozarkcon yesterday. Break-time. Pile of MFJ catalogs on a table. Took one >> back to my seat to kill time. Opened it up to the second page and in the >> lower left corner is a box-ad with the following: >> >> >> "MFJ ATU PC Board for Elecraft K-3 Rig. MFJ-950K3 is a super clone of the >> KAT3 optional tuning board for the superb Elecraft K3 transceiver. >> MFJ-950K3 is a direct plug-in PC board for the Elecraft K3 10 Watt or 100 >> Watt model. Covers 1.8 to 54 MHz. This automatic antenna tuner PC board >> features an L-Match design and can match SWR up to 10:1. It handles 100 >> Watts. The ATU PC board has a second antenna port, and a sub-rx SMA port. >> All antenna ports are protected with gas discharge tubes. Super sensitive >> relay allows excellent low current drain. MFJ-950K3 is 4W x 3 1/2H x 1 1/4D >> inches and easily slides right into the K3’s tuning board slot. Weighs less >> than 1/2 pound. Pick up this great accessory for your K3 today and save >> $$$!" >> >> >> What in the world is that all about? What possible market are they shooting >> at? Who would put anything "MFJ" in anything Elecraft? >> >> Someone enlighten me! Did I sleep through April 1st? >> >> https://www.mfjenterprises.com/Product.php?productid=MFJ-950K3 >> >> 73, >> >> Kent K9ZTV __ 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] BIZARRE OFFERING FROM MFJ
I need an automatic tuner antenna for an ACOM A1000 amplifier. Does anyone know of any brand or dealer that sells this antenna tuner? Will MFJ release an automatic tuner antenna for 1000 watts? I hope some guidance response. Thank you. Dr. Germán Durán HK3J. Bogota Colombia Internist and Nephrologist and devoted ham. El dom., 7 abr. 2019 a las 11:15, Dr. William J. Schmidt (< b...@wjschmidt.com>) escribió: > There isn't really much in the way of smarts on the clone board. It's > simply the tuner elements (coils and capacitors), a few relays, the relay > driver chips, and gas tubes. The actual tuning smarts comes from elsewhere > within the K3. This isn’t much of a stretch for a clone. > > > -Original Message- > From: elecraft-boun...@mailman.qth.net [mailto: > elecraft-boun...@mailman.qth.net] On Behalf Of Doug Person > Sent: Sunday, April 7, 2019 11:00 AM > To: elecraft@mailman.qth.net > Subject: Re: [Elecraft] BIZARRE OFFERING FROM MFJ > > MFJ has been a leader in automatic tuner technology for years. It was > probably a very simple engineering process for them to use what they have > to create a K3 tuner. You may have a dislike of MFJ products. But, that > doesn't preclude the fact that their tuners work very well. They have been > selling the K3 tuner for years. It doesn't seem the least bit surprising > given the modular nature of the K3 and the long history MFJ has with > automatic tuner technology. Maybe it's actually a complement to Elecraft > that MFJ takes the K3 so seriously. > > Doug --KJØF > > On 4/7/2019 10:26 AM, KENT TRIMBLE wrote: > > Ozarkcon yesterday. Break-time. Pile of MFJ catalogs on a table. Took > > one back to my seat to kill time. Opened it up to the second page and > > in the lower left corner is a box-ad with the following: > > > > > > "MFJ ATU PC Board for Elecraft K-3 Rig. MFJ-950K3 is a super clone of > > the KAT3 optional tuning board for the superb Elecraft K3 transceiver. > > MFJ-950K3 is a direct plug-in PC board for the Elecraft > > K3 10 Watt or 100 Watt model. Covers 1.8 to 54 MHz. This automatic > > antenna tuner PC board features an L-Match design and can match SWR up > > to 10:1. It handles 100 Watts. The ATU PC board has a second antenna > > port, and a sub-rx SMA port. All antenna ports are protected with gas > > discharge tubes. Super sensitive relay allows excellent low current > > drain. MFJ-950K3 is 4W x 3 1/2H x 1 1/4D inches and easily slides > > right into the K3’s tuning board slot. Weighs less than 1/2 pound. > > Pick up this great accessory for your K3 today and save $$$!" > > > > > > What in the world is that all about? What possible market are they > > shooting at? Who would put anything "MFJ" in anything Elecraft? > > > > Someone enlighten me! Did I sleep through April 1st? > > > > https://www.mfjenterprises.com/Product.php?productid=MFJ-950K3 > > > > 73, > > > > Kent K9ZTV > > > > > > > > > > > > --- > > This email has been checked for viruses by AVG. > > https://www.avg.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 > > -- > 73 de Doug -- KJ0F > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] BIZARRE OFFERING FROM MFJ
There isn't really much in the way of smarts on the clone board. It's simply the tuner elements (coils and capacitors), a few relays, the relay driver chips, and gas tubes. The actual tuning smarts comes from elsewhere within the K3. This isn’t much of a stretch for a clone. -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Doug Person Sent: Sunday, April 7, 2019 11:00 AM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] BIZARRE OFFERING FROM MFJ MFJ has been a leader in automatic tuner technology for years. It was probably a very simple engineering process for them to use what they have to create a K3 tuner. You may have a dislike of MFJ products. But, that doesn't preclude the fact that their tuners work very well. They have been selling the K3 tuner for years. It doesn't seem the least bit surprising given the modular nature of the K3 and the long history MFJ has with automatic tuner technology. Maybe it's actually a complement to Elecraft that MFJ takes the K3 so seriously. Doug --KJØF On 4/7/2019 10:26 AM, KENT TRIMBLE wrote: > Ozarkcon yesterday. Break-time. Pile of MFJ catalogs on a table. Took > one back to my seat to kill time. Opened it up to the second page and > in the lower left corner is a box-ad with the following: > > > "MFJ ATU PC Board for Elecraft K-3 Rig. MFJ-950K3 is a super clone of > the KAT3 optional tuning board for the superb Elecraft K3 transceiver. > MFJ-950K3 is a direct plug-in PC board for the Elecraft > K3 10 Watt or 100 Watt model. Covers 1.8 to 54 MHz. This automatic > antenna tuner PC board features an L-Match design and can match SWR up > to 10:1. It handles 100 Watts. The ATU PC board has a second antenna > port, and a sub-rx SMA port. All antenna ports are protected with gas > discharge tubes. Super sensitive relay allows excellent low current > drain. MFJ-950K3 is 4W x 3 1/2H x 1 1/4D inches and easily slides > right into the K3’s tuning board slot. Weighs less than 1/2 pound. > Pick up this great accessory for your K3 today and save $$$!" > > > What in the world is that all about? What possible market are they > shooting at? Who would put anything "MFJ" in anything Elecraft? > > Someone enlighten me! Did I sleep through April 1st? > > https://www.mfjenterprises.com/Product.php?productid=MFJ-950K3 > > 73, > > Kent K9ZTV > > > > > > --- > This email has been checked for viruses by AVG. > https://www.avg.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 -- 73 de Doug -- KJ0F __ 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] BIZARRE OFFERING FROM MFJ
Wonder if it's held in the K3 with hot glue like they use to hold the panel meters in their antenna tuners have seen this in a tuner purchased by a friend. 73 ! K0PP On Sun, Apr 7, 2019, 10:01 Doug Person wrote: > MFJ has been a leader in automatic tuner technology for years. It was > probably a very simple engineering process for them to use what they > have to create a K3 tuner. You may have a dislike of MFJ products. But, > that doesn't preclude the fact that their tuners work very well. They > have been selling the K3 tuner for years. It doesn't seem the least bit > surprising given the modular nature of the K3 and the long history MFJ > has with automatic tuner technology. Maybe it's actually a complement to > Elecraft that MFJ takes the K3 so seriously. > > Doug --KJØF > > On 4/7/2019 10:26 AM, KENT TRIMBLE wrote: > > Ozarkcon yesterday. Break-time. Pile of MFJ catalogs on a table. > > Took one back to my seat to kill time. Opened it up to the second > > page and in the lower left corner is a box-ad with the following: > > > > > > "MFJ ATU PC Board for Elecraft K-3 Rig. MFJ-950K3 is a super clone of > > the KAT3 optional tuning board for the superb Elecraft K3 > > transceiver. MFJ-950K3 is a direct plug-in PC board for the Elecraft > > K3 10 Watt or 100 Watt model. Covers 1.8 to 54 MHz. This automatic > > antenna tuner PC board features an L-Match design and can match SWR up > > to 10:1. It handles 100 Watts. The ATU PC board has a second antenna > > port, and a sub-rx SMA port. All antenna ports are protected with gas > > discharge tubes. Super sensitive relay allows excellent low current > > drain. MFJ-950K3 is 4W x 3 1/2H x 1 1/4D inches and easily slides > > right into the K3’s tuning board slot. Weighs less than 1/2 pound. > > Pick up this great accessory for your K3 today and save $$$!" > > > > > > What in the world is that all about? What possible market are they > > shooting at? Who would put anything "MFJ" in anything Elecraft? > > > > Someone enlighten me! Did I sleep through April 1st? > > > > https://www.mfjenterprises.com/Product.php?productid=MFJ-950K3 > > > > 73, > > > > Kent K9ZTV > > > > > > > > > > > > --- > > This email has been checked for viruses by AVG. > > https://www.avg.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 > > -- > 73 de Doug -- KJ0F > > __ > 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] BIZARRE OFFERING FROM MFJ
MFJ has been a leader in automatic tuner technology for years. It was probably a very simple engineering process for them to use what they have to create a K3 tuner. You may have a dislike of MFJ products. But, that doesn't preclude the fact that their tuners work very well. They have been selling the K3 tuner for years. It doesn't seem the least bit surprising given the modular nature of the K3 and the long history MFJ has with automatic tuner technology. Maybe it's actually a complement to Elecraft that MFJ takes the K3 so seriously. Doug --KJØF On 4/7/2019 10:26 AM, KENT TRIMBLE wrote: Ozarkcon yesterday. Break-time. Pile of MFJ catalogs on a table. Took one back to my seat to kill time. Opened it up to the second page and in the lower left corner is a box-ad with the following: "MFJ ATU PC Board for Elecraft K-3 Rig. MFJ-950K3 is a super clone of the KAT3 optional tuning board for the superb Elecraft K3 transceiver. MFJ-950K3 is a direct plug-in PC board for the Elecraft K3 10 Watt or 100 Watt model. Covers 1.8 to 54 MHz. This automatic antenna tuner PC board features an L-Match design and can match SWR up to 10:1. It handles 100 Watts. The ATU PC board has a second antenna port, and a sub-rx SMA port. All antenna ports are protected with gas discharge tubes. Super sensitive relay allows excellent low current drain. MFJ-950K3 is 4W x 3 1/2H x 1 1/4D inches and easily slides right into the K3’s tuning board slot. Weighs less than 1/2 pound. Pick up this great accessory for your K3 today and save $$$!" What in the world is that all about? What possible market are they shooting at? Who would put anything "MFJ" in anything Elecraft? Someone enlighten me! Did I sleep through April 1st? https://www.mfjenterprises.com/Product.php?productid=MFJ-950K3 73, Kent K9ZTV --- This email has been checked for viruses by AVG. https://www.avg.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 -- 73 de Doug -- KJ0F __ 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] BIZARRE OFFERING FROM MFJ
I'll be keeping my K3S 100% stock, thank you. Wayne N6KR > On Apr 7, 2019, at 8:26 AM, KENT TRIMBLE wrote: > > Ozarkcon yesterday. Break-time. Pile of MFJ catalogs on a table. Took one > back to my seat to kill time. Opened it up to the second page and in the > lower left corner is a box-ad with the following: > > > "MFJ ATU PC Board for Elecraft K-3 Rig. MFJ-950K3 is a super clone of the > KAT3 optional tuning board for the superb Elecraft K3 transceiver. MFJ-950K3 > is a direct plug-in PC board for the Elecraft K3 10 Watt or 100 Watt model. > Covers 1.8 to 54 MHz. This automatic antenna tuner PC board features an > L-Match design and can match SWR up to 10:1. It handles 100 Watts. The ATU > PC board has a second antenna port, and a sub-rx SMA port. All antenna ports > are protected with gas discharge tubes. Super sensitive relay allows > excellent low current drain. MFJ-950K3 is 4W x 3 1/2H x 1 1/4D inches and > easily slides right into the K3’s tuning board slot. Weighs less than 1/2 > pound. Pick up this great accessory for your K3 today and save $$$!" > > > What in the world is that all about? What possible market are they shooting > at? Who would put anything "MFJ" in anything Elecraft? > > Someone enlighten me! Did I sleep through April 1st? > > https://www.mfjenterprises.com/Product.php?productid=MFJ-950K3 > > 73, > > Kent K9ZTV __ 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] BIZARRE OFFERING FROM MFJ
Ozarkcon yesterday. Break-time. Pile of MFJ catalogs on a table. Took one back to my seat to kill time. Opened it up to the second page and in the lower left corner is a box-ad with the following: "MFJ ATU PC Board for Elecraft K-3 Rig. MFJ-950K3 is a super clone of the KAT3 optional tuning board for the superb Elecraft K3 transceiver. MFJ-950K3 is a direct plug-in PC board for the Elecraft K3 10 Watt or 100 Watt model. Covers 1.8 to 54 MHz. This automatic antenna tuner PC board features an L-Match design and can match SWR up to 10:1. It handles 100 Watts. The ATU PC board has a second antenna port, and a sub-rx SMA port. All antenna ports are protected with gas discharge tubes. Super sensitive relay allows excellent low current drain. MFJ-950K3 is 4W x 3 1/2H x 1 1/4D inches and easily slides right into the K3’s tuning board slot. Weighs less than 1/2 pound. Pick up this great accessory for your K3 today and save $$$!" What in the world is that all about? What possible market are they shooting at? Who would put anything "MFJ" in anything Elecraft? Someone enlighten me! Did I sleep through April 1st? https://www.mfjenterprises.com/Product.php?productid=MFJ-950K3 73, Kent K9ZTV --- This email has been checked for viruses by AVG. https://www.avg.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
