Re: [Elecraft] KAT500 Tuner antenna selection stuck in #2 position
I wish more would do the honour of letting the list know the cure. Regards, Mike VP8NO On 14/06/2021 13:18, Michael K Bottles via Elecraft wrote: No worries Lance, I hate to tell you how often I have performed “Operator Error”! Kim - K7IM Sent from my iPad On Jun 14, 2021, at 09:16, Lance HP wrote: I found my issue.operator error. I didn't realize that the band selection was only 160m. I didn't try changing the antenna config when 160m was selected since I don't operate on 160m yet. I don't remember how that got changed. Anyway...selected all bands AND selected enabled for all antennas and it works fine. Sorry about that! I am still loving this autotuner. Currently tuning a doublet, but will be tuning a longer wire soon (most likely a loop). Lance KK4DX __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KAT500 Tuner antenna selection stuck in #2 position
No worries Lance, I hate to tell you how often I have performed “Operator Error”! Kim - K7IM Sent from my iPad > On Jun 14, 2021, at 09:16, Lance HP wrote: > > > I found my issue.operator error. > I didn't realize that the band selection was only 160m. I didn't try changing > the antenna config when 160m was selected since I don't operate on 160m yet. > > I don't remember how that got changed. Anyway...selected all bands AND > selected enabled for all antennas and it works fine. > > Sorry about that! > I am still loving this autotuner. Currently tuning a doublet, but will be > tuning a longer wire soon (most likely a loop). > > Lance > KK4DX > > -- Original Message -- > From: "Andy Durbin" > To: "Lance HP" > Sent: 6/14/2021 11:03:49 AM > Subject: Re: Re[4]: [Elecraft] KAT500 Tuner antenna selection stuck in #2 > position > >> With the configuration shown all antennas should have been selectable on 160 >> m. I assume your did not make a screen shot with band selected to the band >> that exhibited the problem. >> >> Having the same enabled antennas on ALL bands may be appropriate for your >> station but some of my antennas are single band and must only be enabled on >> one band. >> >> Anyway, sound like it was doing what you had told it to do but your email >> may be rejected by the "list" because of the embedded image. Perhaps post >> there to say you found the problem? >> >> 73, >> Andy, k3wyc >> >> >>> > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to k...@icloud.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KAT500 Tuner antenna selection stuck in #2 position
I found my issue.operator error. I didn't realize that the band selection was only 160m. I didn't try changing the antenna config when 160m was selected since I don't operate on 160m yet. I don't remember how that got changed. Anyway...selected all bands AND selected enabled for all antennas and it works fine. Sorry about that! I am still loving this autotuner. Currently tuning a doublet, but will be tuning a longer wire soon (most likely a loop). Lance KK4DX -- Original Message -- From: "Andy Durbin" To: "Lance HP" Sent: 6/14/2021 11:03:49 AM Subject: Re: Re[4]: [Elecraft] KAT500 Tuner antenna selection stuck in #2 position With the configuration shown all antennas should have been selectable on 160 m. I assume your did not make a screen shot with band selected to the band that exhibited the problem. Having the same enabled antennas on ALL bands may be appropriate for your station but some of my antennas are single band and must only be enabled on one band. Anyway, sound like it was doing what you had told it to do but your email may be rejected by the "list" because of the embedded image. Perhaps post there to say you found the problem? 73, Andy, k3wyc __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KAT500 Tuner antenna selection stuck in #2 position
""Last resort" tried and in the factory default configuration, the antenna ports are changeable." Good to know it isn't a hardware problem. Can your please take a screen shot of the configuration/antenna tab with "band" selected to a band that exhibits the problem. Email direct to me or post a link so everyone can see it. 73, Andy, k3wyc __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KAT500 Tuner antenna selection stuck in #2 position
Thanks Andy. "Last resort" tried and in the factory default configuration, the antenna ports are changeable. Restored my saved configuration and it is back to only #2 antenna port - no other ports are selectable. Very strangemust be one of those "easter eggs" buried in a menu or something. I'll contact Elecraft *again*. Hopefully I can get someone to talk to about the issue. I am surprised I am the only one who has seen this issue. Lance, KK4DX -- Original Message -- From: "Andy Durbin" To: "elecraft@mailman.qth.net" Sent: 6/14/2021 9:53:52 AM Subject: Re: [Elecraft] KAT500 Tuner antenna selection stuck in #2 position "haven't tried to erase all my settings and revert back to factory default settings...yet. I was only going to do that as a last resort." There is no reason this should be "last resort". Save the current configuration, test with factory default configuration, then restore saved configuration. If default config does not exhibit the problem then you should send the problem configuration to Elecraft support together with an exact series of steps required to reproduce the problem. 73, Andy, k3wyc __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to lstr...@optonline.net __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KAT500 Tuner antenna selection stuck in #2 position
"haven't tried to erase all my settings and revert back to factory default settings...yet. I was only going to do that as a last resort." There is no reason this should be "last resort". Save the current configuration, test with factory default configuration, then restore saved configuration. If default config does not exhibit the problem then you should send the problem configuration to Elecraft support together with an exact series of steps required to reproduce the problem. 73, Andy, k3wyc __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KAT500 Tuner antenna selection stuck in #2 position
I changed the configuration accordingly and no joy. I had everything set up properly in the configuration selection - enabled all the antenna ports. What is interesting is if I chose an antenna port other than #2, it does change on the 'operate' menu briefly, but then reverts back to #2. There are no relay clicks from this action. Lance, KK4DX -- Original Message -- From: "Phil Hystad" To: "kk4dx" Cc: elecraft@mailman.qth.net Sent: 6/13/2021 12:46:57 PM Subject: Re: [Elecraft] KAT500 Tuner antenna selection stuck in #2 position I have had a similar problem and in my case I was not looking at the right spot for adjusting the antennas. There are two different spots when using the KAT500 utility. The Operate menu selection and then also the Configuration\Antennas selection. In my case, the Operate page would not let me change the antenna (nor the KAT500) because the configuration of antennas was not set up properly. I have no idea how those got changed since they had been OK before but I reconfigured the antenna selection options and saved the configuration and everything worked correctly after that. 73, phil, K7PEH On Jun 13, 2021, at 8:15 AM, kk4dx wrote: Anyone have this happen to them? I cannot change the antenna selector via the front panel of the KAT500 or the utility software. The utility software is working as I can remotely cycle through the modes, but the antenna selector is stuck. All antenna positions are checked (enabled) in the utility software and when I advance to another position, the software moves the selection back to #2. -- 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 Message delivered to phys...@mac.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KAT500 Tuner antenna selection stuck in #2 position
KAT500 mode is any mode - current mode is auto, but any mode change does not make any difference in ability to change from the #2 antenna position. haven't tried to erase all my settings and revert back to factory default settings...yet. I was only going to do that as a last resort. Lance, KK4DX -- Original Message -- From: "Andy Durbin" To: "elecraft@mailman.qth.net" Sent: 6/13/2021 8:40:30 PM Subject: [Elecraft] KAT500 Tuner antenna selection stuck in #2 position "I cannot change the antenna selector via the front panel of the KAT500 or the utility software." What was the KAT500 mode when you observed this problem? There is a known firmware defect that may prevent enabled antennas being selected when mode is BYP. The same problem does not exist if mode is MAN and state is Bypassed. Until this is fixed the solution is to avoid mode BYP (Mode MAN and state bypass is electrically identical). 73, Andy, k3wyc __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to lstr...@optonline.net __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KAT500 Tuner antenna selection stuck in #2 position
I have had a similar problem and in my case I was not looking at the right spot for adjusting the antennas. There are two different spots when using the KAT500 utility. The Operate menu selection and then also the Configuration\Antennas selection. In my case, the Operate page would not let me change the antenna (nor the KAT500) because the configuration of antennas was not set up properly. I have no idea how those got changed since they had been OK before but I reconfigured the antenna selection options and saved the configuration and everything worked correctly after that. 73, phil, K7PEH > On Jun 13, 2021, at 8:15 AM, kk4dx wrote: > > Anyone have this happen to them? > I cannot change the antenna selector via the front panel of the KAT500 or > the utility software. The utility software is working as I can remotely > cycle through the modes, but the antenna selector is stuck. All antenna > positions are checked (enabled) in the utility software and when I advance > to another position, the software moves the selection back to #2. > > > > -- > 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 > Message delivered to phys...@mac.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KAT500 tuner
Hi again Alan, As far as your IC-7100 goes using the KAT500 auto tuner, the only thing that you should do as I mentioned in my earlier post (to make sure that the KAT500 is giving you the most accurate tuning possible), is to increase the 7100's power out to about 30 watts, press the TUNE button (or use the AUTO mode) on the KAT500 for EACH new frequency you want to tune up on each band, and that setting will be automatically stored, for each frequency, band and antenna you tuned up on. Once that is done, put the KAT500 in MAN (MANUAL) mode, go to whatever frequency you want to operate on, and INSTEAD of pressing the TUNER/CALL button, just hold down the PTT button the mic for a moment and the KAT500 will recall the tuner's settings for that (or the nearest to that) frequency. Remember that once the settings are all stored, you can leave your power level at whatever you want to use. Just that simple. You will be very happy I'm sure using the KAT500 both with your K3 & KPA500, as well as your IC-7100. Have fun. 73, Alan, AB6C Original message: Date: Fri, 7 Aug 2015 00:37:01 +0100 From: "G4GNX" To: "Elecraft Reflector" Subject: Re: [Elecraft] KAT500 tuner Message-ID: <54F3584BBB30495B92CC467539701276@Paramount> Content-Type: text/plain; format=flowed; charset="utf-8"; reply-type=original Thanks to all of you who replied to my initial message. I think I'd part convinced myself that I would prefer the KAT500 and your various comments have reinforced those thoughts. The KAT500 User Manual mentions use of the AH-4 protocol, which is what the IC7100 uses. It also mentions use of 7 Watts, so I would hope that the IC7100 would work OK as it outputs 10W in tune mode. It's more important to me that the K3 and KPA500 interfaces with the KAT500, the Icom interface would be a secondary useful bonus. 73, Alan. G4GNX __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KAT500 tuner
Thanks to all of you who replied to my initial message. I think I'd part convinced myself that I would prefer the KAT500 and your various comments have reinforced those thoughts. The KAT500 User Manual mentions use of the AH-4 protocol, which is what the IC7100 uses. It also mentions use of 7 Watts, so I would hope that the IC7100 would work OK as it outputs 10W in tune mode. It's more important to me that the K3 and KPA500 interfaces with the KAT500, the Icom interface would be a secondary useful bonus. 73, Alan. G4GNX -Original Message- From: Vic Rosenthal Sent: Wednesday, August 05, 2015 9:00 AM To: G4GNX Cc: Elecraft Reflector Subject: Re: [Elecraft] KAT500 tuner It would be interesting to compare the toroids and capacitors in both products. My guess is that they would be similar, and the difference in ratings is based on the degree to which the manufacturer wishes to be conservative. As I've said on numerous occasions, MFJ products are rated in MFJ watts, which are half the size of regular watts (Pmfj = 2EI). Vic 4X6GP/K2VCO On Aug 5, 2015, at 4:47 AM, G4GNX wrote: Hi all. I am contemplating purchasing a KPA500 amplifier to complement my K3. I currently have a MFJ 998 tuner which is good for 1.5KW but I think that the KAT500 tuner from Elecraft will be a superior product. Would this be a sensible assumption? If I also buy the KAT500, will it easily interface with my Icom IC700 and is there a specific setting that would allow me to use the IC7100 “Tune” button, which allows tuning at reduced power (ISTR it’s set at 10watts)? 73, Alan. G4GNX __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KAT500 tuner
Hi Alan, Like you, I have an MFJ-998 auto tuner, but was never really satisfied with its integration with the Elecraft K3. I suggested to Martin that MFJ produce a cable to integrate with Elecraft radios, but that hasn't yet happened so far as I know. Based on the superb tuning capability that the internal K3 tuner has, I decided to take the plunge on a KAT500. I can't be happier that I did. The integration with the K3 is seamless and pretty much flawless. The tuner follows my K3 wherever it goes, quickly and silently (silently because I've stored matches for all bands; on the initial tune there's of need a bit of clatter but nothing like the 998's) matching my two low wire dipoles on all bands including 6M, though 160M is a bit tough because of the 52-foot length of the wires. I don't get the "surprise!" tune-ups that I got with the 998. I get many more matches on 160M and 80M than I got with the 998. All I have to do is switch my amp when I change bands now. At some point I know I'll end up with a KPA500 and that switching function will become a thing of the past too. I recently added a third antenna (coil-loaded sloper) for 160M/80M and the KAT500 loads it up beautifully. It's sweet that that particular antenna remains always selected for those two bands. I suspect that at least in part, the MFJ-998 is designed to evaluate situations where it must expect the user will throw a full 1.5KW at it into a really poor match, and it then must say "My components really aren't designed for that particular extreme, and I can't give you a <2:1 match."There's no way for me to tell it "Hey, I'm never sending you more than 800, I promise!" One thing I did like about the 998 is I had two sets of tuning settings - one for dry weather, and one for rainy/snowy weather. It was easy to switch between the two on each antenna. Of course that is possible to do with the KAT500 as well. You can save a "dry weather" configuration file and a "wet weather" file and read the appropriate one into the tuner as needed. I've not yet gotten 'round to creating the wet weather file. I keep the 998 around thinking one day MFJ will produce a cable for Elecraft radios, and I may decide to go through the hassle of getting a building permit to install 240v to the shack, and go fully QRO. Until then, it's not connected to anything now and the KAT500 is my do-it-all tuner for all occasions. I went the kit route with the KAT500 and like all the Elecraft kits, it was a barrel of fun to assemble. I can't speak to how the KAT500 will integrate with your Icom, but as for its integration with the K3, it's the bees knees. 73, Tyler, KC2LST -- Message: 15Date: Wed, 5 Aug 2015 02:47:10 +0100From: "G4GNX" To: "Elecraft Reflector" Subject: [Elecraft] KAT500 tunerMessage-ID: Content-Type: text/plain; charset="Windows-1252" Hi all. I am contemplating purchasing a KPA500 amplifier to complement my K3. I currently have a MFJ 998 tuner which is good for 1.5KW but I think that the KAT500 tuner from Elecraft will be a superior product. Would this be a sensible assumption? If I also buy the KAT500, will it easily interface with my Icom IC700 and is there a specific setting that would allow me to use the IC7100 ?Tune? button, which allows tuning at reduced power (ISTR it?s set at 10watts)? 73, Alan. G4GNX __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KAT500 tuner
Hi Alan, I think I can give you some insight. I have the KAT500 auto tuner that I used first with my Icom IC-756Pro3, and now with my IC-7600. I also have an IC-7000 as well for mobile use, but have not used it with it, and since it doesn't have a built in auto tuner, I don't know for sure what amount of RF it may put out when a non-Icom auto tuner is connected to its Molex tuner port. For an Icom AH-4 for example, its specs state that tuning power required is 5-15 watts and that radiated power during tuning is less than 0.3 watt. If you use the KAT500 with any rig that does have an internal automatic tuner, make absolutely sure that it is turned off at any time the KAT500 is in use. Internal auto tuners and external auto tuners do not cohabit well, consequently, any tune settings will be greatly suspect. Its either one or the other, never both in circuit at the same time. I too intended to use it by pushing the TUNER on the rig, which puts out about 10 watts or so as all modern Icom transceivers do as far as I know. Unfortunately, the KAT500 really needs to see somewhere in the vicinity of about 30 watts RF out, in order to accurately tune the radio. I talked to Elecraft tech support extensively, (who by the way are about the best in the business, both professionally and technically) regarding getting different tune settings using the tuner button (at 10 watts out) on the rig vs manually setting power out to about 30 watts. On the Elecraft website, in the FAQ's, it says: Q: Can I use a 5 or 10 watt radio with the KAT500?A: The KAT500 can tune with 10 W but we recommend 20 W to 100 W for best tuning accuracy. If the KAT500 has already stored a tuning memory for the current frequency, it is possible to recall the tuned memory setting with less than 10 W. The KAT500 measures transmit frequency to automatically select tuning memories and antennas. So, based on Elecraft tech support's recommendations, I manually used 30 watts to "train" the tuner to memorize all the frequencies I wanted to be stored, which worked very well, and continues to do so to this day. But that is WITHOUT using the TUNER button on the rig WITH a cable connected between Icom's TUNER Molex connector on the back of the rig, and the other end going to the back of the KAT500's TUNE jack and power jack. The bottom line turned out to be that IF the rig's TUNER button is used to train or use the KAT500 to tune new frequencies (with the cable described above and because it only puts out 10 watts this way), the results you get will not be as accurate, or reliable as those you would get by manually using it using the TUNE button on the KAT500 itself (with no cable connected to the Molex connector on the rig going to the KAT500). All of this was verified by Elecraft. In reality, using the TUNE button on the KAT500 is just as fast as using the tuner button on the rig with the sole exception that you DO have to set the power out to about 30 watts. It may well be that it will work similarly with your IC-7000. Hope this gives you some insight as to what I found out. If you get the KAT500, you will love it!!! I do. Let us know how it works for you. I'm sure that others will be very interested as well. 73, Alan, AB6C Original Message: Message: 15Date: Wed, 5 Aug 2015 02:47:10 +0100 From: "G4GNX" To: "Elecraft Reflector" Subject: [Elecraft] KAT500 tuner Message-ID: Content-Type: text/plain; charset="Windows-1252" Hi all. I am contemplating purchasing a KPA500 amplifier to complement my K3. I currently have a MFJ 998 tuner which is good for 1.5KW but I think that the KAT500 tuner from Elecraft will be a superior product. Would this be a sensible assumption? If I also buy the KAT500, will it easily interface with my Icom IC700 and is there a specific setting that would allow me to use the IC7100 ?Tune? button, which allows tuning at reduced power (ISTR it?s set at 10watts)? 73, Alan. G4GNX __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KAT500 tuner
Alan - If you are satisfied with the performance of the MFJ tuner, you can certainly give it a try. A friend of mine had one to sell a few years ago, and let me try it on my very NON-resonant antenna. I have a 30' vertical that requires a tuner on any except 30 meters. The tuner in the K3 handles it quite well on 40 through 6 meters, but struggles on 80, where the native SWR is about 18:1. The MFJ 998 could not achieve a decent match on 2 or 3 bands, including 40 meters, which is one of my favorite bands. I wanted to get an amplifier, so I did not did not buy the 998. I now have the KAT500 and KPA500. The KAT500 has no trouble with those bands, so I can run my amp at full power when and where I want... except for 80. For that band, I switch to a Palstar AT-AUTO, and can run the amp at 500 watts. I know they don't all get to the antenna, but I have only 30' of coax from there to the antenna, and the coax is LMR600, so I have mitigated the losses somewhat. A friend had a MFJ998 that he mounted outside in a weatherproof enclosure, and ran 1500 watts to an inverted L. He was very happy with that setup, until a tree fell on the enclosure and destroyed the tuner. He then bought the MFJ998RT, and last I heard he was satisfied with it. I am sorry, but I am not sure about the integration of the KAT500 with your Icom 7100. Another friend used his Icom 7566PROIII with his KAT500, and had to press Tune on the rig... and then Tune on the tuner... but once the settings were memorized, then just a single DIT from the key, or a syllable or two on SSB and the KAT500 was all set and ready to go. 73 de Dave - K9FN On Tue, Aug 4, 2015 at 9:47 PM, G4GNX wrote: > Hi all. > > I am contemplating purchasing a KPA500 amplifier to complement my K3. > > I currently have a MFJ 998 tuner which is good for 1.5KW but I think that > the KAT500 tuner from Elecraft will be a superior product. Would this be a > sensible assumption? > > If I also buy the KAT500, will it easily interface with my Icom IC700 and > is there a specific setting that would allow me to use the IC7100 “Tune” > button, which allows tuning at reduced power (ISTR it’s set at 10watts)? > > 73, > > Alan. G4GNX > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to dpbu...@gmail.com > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KAT500 tuner
It would be interesting to compare the toroids and capacitors in both products. My guess is that they would be similar, and the difference in ratings is based on the degree to which the manufacturer wishes to be conservative. As I've said on numerous occasions, MFJ products are rated in MFJ watts, which are half the size of regular watts (Pmfj = 2EI). Vic 4X6GP/K2VCO > On Aug 5, 2015, at 4:47 AM, G4GNX wrote: > > Hi all. > > I am contemplating purchasing a KPA500 amplifier to complement my K3. > > I currently have a MFJ 998 tuner which is good for 1.5KW but I think that the > KAT500 tuner from Elecraft will be a superior product. Would this be a > sensible assumption? > > If I also buy the KAT500, will it easily interface with my Icom IC700 and is > there a specific setting that would allow me to use the IC7100 “Tune” button, > which allows tuning at reduced power (ISTR it’s set at 10watts)? > > 73, > > Alan. G4GNX > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to k2vco@gmail.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KAT500 tuner for sale
Hi Greg.. I"ll buy the tuner. sent you a e-mail Ed KD7PY ex K7wia -- View this message in context: http://elecraft.365791.n2.nabble.com/KAT500-tuner-for-sale-tp7598708p7598743.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KAT500 TUNER WOES
Sometimes when the weather changes, the match changes. There was a thread like this awhile back and it was noted that the different residual capacitances and inductances when using the KAT500 versus the ATU in the K3 makes a difference in being able to find a match with certain loads. It was also pointed out by Elecraft that the tuner values in the K3 ATU and the KAT500 are the same. Changing the length of the feedline sounds like a plan. - Chuck, KE9UW -- View this message in context: http://elecraft.365791.n2.nabble.com/KAT500-TUNER-WOES-tp7589315p7589344.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KAT500 TUNER WOES
Also, consider making sure you have the latest firmware updates. I have also experienced the situation where the K3 internal tuner will tune my 200' ladder-line fed doublet but the KAT500 will not. I'm hoping that subsequent updates will improve the KAT500's algorithms. 73, Doug -- K0DXV On 5/19/2014 8:50 PM, Don Wilhelm wrote: David, What have you changed on that antenna system since it last "worked"? The length of the antenna is only part of the story, because the length of the feedline is also an important parameter. If you changed the feedline, that can make the difference between working and not working. The length consideration should be the feedline length plus 1/2 of the antenna length. If that comes close to a 1/2 wavelength, the antenna will be hard to feed since it represents a high impedance to the tuner. Likewise, if the feedline plus half antenna is an odd multiple of 1/4 wavelength, it will present a very low impedance to the tuner which can be difficult to match. Adding (or subtracting) a bit of feedline - add or subtract 1/8 wavelength at the problem frequency - can make all the difference between obtaining a match or not. 73, Don W3FPR On 5/19/2014 9:26 PM, David Inger wrote: I have a fairly early KAT500 tuner (#275). I am using it to tune several antennas. Recently it has stopped finding acceptable matches to a ladderline-fed 110 ft. dipole. This problem is only on 40-meters. The SWR anywhere in that band is around 8:1. The tuner works great on all other bands (well, not so much on 160, but that's the antenna's problem). I also have a 43-ft vertical and the tuner matches fine on that antenna. I replaced all intervening coax jumpers and even the 1:1 current balun at the transition of the ladderline to the coax in the shack. None of the above help. Interestingly, when I bypass the KAT500 and enable the internal tuner in the K3, everything works fine, including matching 40-meters. I have also done a reset using the KAT500 utility program; still no help. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to k0...@aol.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KAT500 TUNER WOES
Have you tried a dummy load with tuner on 40m? Have you used an analyzer on the antenna? Sent from my iPhone ...nr4c. bill > On May 19, 2014, at 9:26 PM, "David Inger" wrote: > > I have a fairly early KAT500 tuner (#275). I am using it to tune several > antennas. Recently it has stopped finding acceptable matches to a > ladderline-fed 110 ft. dipole. This problem is only on 40-meters. The SWR > anywhere in that band is around 8:1. The tuner works great on all other > bands (well, not so much on 160, but that's the antenna's problem). I also > have a 43-ft vertical and the tuner matches fine on that antenna. I > replaced all intervening coax jumpers and even the 1:1 current balun at the > transition of the ladderline to the coax in the shack. None of the above > help. > > > > Interestingly, when I bypass the KAT500 and enable the internal tuner in the > K3, everything works fine, including matching 40-meters. I have also done a > reset using the KAT500 utility program; still no help. > > > > Before, I tear into things or stop bothering the good people at Elecraft, I > wonder if any in the group has any suggestions. > > > > 73 de K6SBA > > David in Santa Barbara, CA > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to n...@widomaker.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KAT500 TUNER WOES
David, What have you changed on that antenna system since it last "worked"? The length of the antenna is only part of the story, because the length of the feedline is also an important parameter. If you changed the feedline, that can make the difference between working and not working. The length consideration should be the feedline length plus 1/2 of the antenna length. If that comes close to a 1/2 wavelength, the antenna will be hard to feed since it represents a high impedance to the tuner. Likewise, if the feedline plus half antenna is an odd multiple of 1/4 wavelength, it will present a very low impedance to the tuner which can be difficult to match. Adding (or subtracting) a bit of feedline - add or subtract 1/8 wavelength at the problem frequency - can make all the difference between obtaining a match or not. 73, Don W3FPR On 5/19/2014 9:26 PM, David Inger wrote: I have a fairly early KAT500 tuner (#275). I am using it to tune several antennas. Recently it has stopped finding acceptable matches to a ladderline-fed 110 ft. dipole. This problem is only on 40-meters. The SWR anywhere in that band is around 8:1. The tuner works great on all other bands (well, not so much on 160, but that's the antenna's problem). I also have a 43-ft vertical and the tuner matches fine on that antenna. I replaced all intervening coax jumpers and even the 1:1 current balun at the transition of the ladderline to the coax in the shack. None of the above help. Interestingly, when I bypass the KAT500 and enable the internal tuner in the K3, everything works fine, including matching 40-meters. I have also done a reset using the KAT500 utility program; still no help. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
