Re: [Elecraft] KPA500 and K3 SWR meters disagree
That's true. Especially when you let stuff sit for 6 months between uses. I need to get more of those covers 73 Jeff kb2m -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Clay Autery Sent: Sunday, June 3, 2018 2:34 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] KPA500 and K3 SWR meters disagree Make and break syndrome! Either there was a connector that was not fully mated even though you thought it was (something fouling a thread making it appear snug) or some oxidation/schmutz on one of the mating surfaces. I've experienced BOTH... it is maddening for sure. That's why I now put covers on ALL unused connector ends for cables/jumpers not actually in use. There's a reason the military "dummy cords" a connector cover to virtually everything. 73, __ Clay Autery, KY5G (318) 518-1389 On 06/03/18 09:58, jeff griffin wrote: > FIXED ! This morning I went through the RF jumper cables. I didn't find any > issues after taking each one out and inspecting. So I went through all the > other Elecraft supplied cables and also found no issues. So just to be sure > I make a new set of RF jumper cables out of LMR-240. Hooked everything up > and the problem is now fixed. I then tried the jumper cables I replaced one > at a time and the problem didn't return. Go figure. So I put the new LMR-240 > jumpers back on and life is once again good in kb2mland... > > 73 Jeff kb2m > __ 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...@arrl.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] KPA500 and K3 SWR meters disagree
Make and break syndrome! Either there was a connector that was not fully mated even though you thought it was (something fouling a thread making it appear snug) or some oxidation/schmutz on one of the mating surfaces. I've experienced BOTH... it is maddening for sure. That's why I now put covers on ALL unused connector ends for cables/jumpers not actually in use. There's a reason the military "dummy cords" a connector cover to virtually everything. 73, __ Clay Autery, KY5G (318) 518-1389 On 06/03/18 09:58, jeff griffin wrote: FIXED ! This morning I went through the RF jumper cables. I didn't find any issues after taking each one out and inspecting. So I went through all the other Elecraft supplied cables and also found no issues. So just to be sure I make a new set of RF jumper cables out of LMR-240. Hooked everything up and the problem is now fixed. I then tried the jumper cables I replaced one at a time and the problem didn't return. Go figure. So I put the new LMR-240 jumpers back on and life is once again good in kb2mland... 73 Jeff kb2m __ 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] KPA500 and K3 SWR meters disagree
The jumpers connectors were good quality, but are very old I think I built them maybe 20 years ago. Anyway now I use better coax, and quality crimp on connectors I use either Amphenol or the DX Engineering brand which seem to me to be equal to the Amphenol brand. I'm not the type to pursue this farther, I'm not going to dissect the connectors on the old jumpers, I'm just going to throw them out. I have better things to do with my time :-) 73 Jeff kb2m -Original Message- From: Bob McGraw K4TAX [mailto:rmcg...@blomand.net] Sent: Sunday, June 3, 2018 1:52 PM To: jeff griffin Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] KPA500 and K3 SWR meters disagree Loose or poor quality PL-259. There are many which "look good" but are not. Always snug PL-259 connectors on the SO-239 such they are a bit more than finger tight. I use/have a pair of 4" Channel lock pliers on the desk. Bob, K4TAX Sent from my iPhone > On Jun 3, 2018, at 9:58 AM, jeff griffin wrote: > > FIXED ! This morning I went through the RF jumper cables. I didn't find any > issues after taking each one out and inspecting. So I went through all the > other Elecraft supplied cables and also found no issues. So just to be sure > I make a new set of RF jumper cables out of LMR-240. Hooked everything up > and the problem is now fixed. I then tried the jumper cables I replaced one > at a time and the problem didn't return. Go figure. So I put the new LMR-240 > jumpers back on and life is once again good in kb2mland... > > 73 Jeff kb2m > > > -Original Message- > From: elecraft-boun...@mailman.qth.net > [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of jeff griffin > Sent: Saturday, June 2, 2018 11:49 AM > To: elecraft@mailman.qth.net > Subject: [Elecraft] KPA500 and K3 SWR meters disagree > > I recently brought my KPA/KAT500 north for the summer and hooked up to my > trapped multiband fan dipole that I use here in NJ. I leave my K3 here for > remote use and use the amp at my winter home in Florida to use with my Flex > 6500 with a Steppir Vertical antenna without the KAT500 tuner. When I got up > here I installed the KIO3B option. The install went well with no issues, all > looked good so I connected the K3, P3, KAT500, and KPA500 with the Elecraft > provided cable set like I do every year. > > The issue I'm having is an SWR difference between the KAT500 and the K3. > For example if I use the K3's internal tuner I can on a chosen frequency > achieve an SWR of 1/1. I the put the internal K3 tuner in bypass mode and > take the KAT500 out of bypass and set to auto. I then use the xmit button on > the K3 to create a tune signal to be sent to the KAT500. The K3 then shows a > 1/1, the KAT500 about the same but the KPA500 which is in STBY mode shows > around 3/1. What this causes to happen is the Amp will fault out if I try to > use any power output. If I check the antenna with a trusted SWR meter I see > 1.3/1 at the frequency of use. I upgraded the firmware in all the devices in > use, I also did a reset of the KAT's stored frequencies memory, and checked > both the amp and tuner with the utility programs. I'm going to call Elecraft > on Monday, anyone have any ideas in the meantime I can try? > > 73 Jeff kb2m > > __ > 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...@arrl.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 rmcg...@blomand.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] KPA500 and K3 SWR meters disagree
Loose or poor quality PL-259. There are many which "look good" but are not. Always snug PL-259 connectors on the SO-239 such they are a bit more than finger tight. I use/have a pair of 4" Channel lock pliers on the desk. Bob, K4TAX Sent from my iPhone > On Jun 3, 2018, at 9:58 AM, jeff griffin wrote: > > FIXED ! This morning I went through the RF jumper cables. I didn't find any > issues after taking each one out and inspecting. So I went through all the > other Elecraft supplied cables and also found no issues. So just to be sure > I make a new set of RF jumper cables out of LMR-240. Hooked everything up > and the problem is now fixed. I then tried the jumper cables I replaced one > at a time and the problem didn't return. Go figure. So I put the new LMR-240 > jumpers back on and life is once again good in kb2mland... > > 73 Jeff kb2m > > > -Original Message- > From: elecraft-boun...@mailman.qth.net > [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of jeff griffin > Sent: Saturday, June 2, 2018 11:49 AM > To: elecraft@mailman.qth.net > Subject: [Elecraft] KPA500 and K3 SWR meters disagree > > I recently brought my KPA/KAT500 north for the summer and hooked up to my > trapped multiband fan dipole that I use here in NJ. I leave my K3 here for > remote use and use the amp at my winter home in Florida to use with my Flex > 6500 with a Steppir Vertical antenna without the KAT500 tuner. When I got up > here I installed the KIO3B option. The install went well with no issues, all > looked good so I connected the K3, P3, KAT500, and KPA500 with the Elecraft > provided cable set like I do every year. > > The issue I'm having is an SWR difference between the KAT500 and the K3. > For example if I use the K3's internal tuner I can on a chosen frequency > achieve an SWR of 1/1. I the put the internal K3 tuner in bypass mode and > take the KAT500 out of bypass and set to auto. I then use the xmit button on > the K3 to create a tune signal to be sent to the KAT500. The K3 then shows a > 1/1, the KAT500 about the same but the KPA500 which is in STBY mode shows > around 3/1. What this causes to happen is the Amp will fault out if I try to > use any power output. If I check the antenna with a trusted SWR meter I see > 1.3/1 at the frequency of use. I upgraded the firmware in all the devices in > use, I also did a reset of the KAT's stored frequencies memory, and checked > both the amp and tuner with the utility programs. I'm going to call Elecraft > on Monday, anyone have any ideas in the meantime I can try? > > 73 Jeff kb2m > > __ > 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...@arrl.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 rmcg...@blomand.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] KPA500 and K3 SWR meters disagree
FIXED ! This morning I went through the RF jumper cables. I didn't find any issues after taking each one out and inspecting. So I went through all the other Elecraft supplied cables and also found no issues. So just to be sure I make a new set of RF jumper cables out of LMR-240. Hooked everything up and the problem is now fixed. I then tried the jumper cables I replaced one at a time and the problem didn't return. Go figure. So I put the new LMR-240 jumpers back on and life is once again good in kb2mland... 73 Jeff kb2m -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of jeff griffin Sent: Saturday, June 2, 2018 11:49 AM To: elecraft@mailman.qth.net Subject: [Elecraft] KPA500 and K3 SWR meters disagree I recently brought my KPA/KAT500 north for the summer and hooked up to my trapped multiband fan dipole that I use here in NJ. I leave my K3 here for remote use and use the amp at my winter home in Florida to use with my Flex 6500 with a Steppir Vertical antenna without the KAT500 tuner. When I got up here I installed the KIO3B option. The install went well with no issues, all looked good so I connected the K3, P3, KAT500, and KPA500 with the Elecraft provided cable set like I do every year. The issue I'm having is an SWR difference between the KAT500 and the K3. For example if I use the K3's internal tuner I can on a chosen frequency achieve an SWR of 1/1. I the put the internal K3 tuner in bypass mode and take the KAT500 out of bypass and set to auto. I then use the xmit button on the K3 to create a tune signal to be sent to the KAT500. The K3 then shows a 1/1, the KAT500 about the same but the KPA500 which is in STBY mode shows around 3/1. What this causes to happen is the Amp will fault out if I try to use any power output. If I check the antenna with a trusted SWR meter I see 1.3/1 at the frequency of use. I upgraded the firmware in all the devices in use, I also did a reset of the KAT's stored frequencies memory, and checked both the amp and tuner with the utility programs. I'm going to call Elecraft on Monday, anyone have any ideas in the meantime I can try? 73 Jeff kb2m __ 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...@arrl.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] KPA500 and K3 SWR meters disagree
Have you replaced the coax cable between the KPA500 and the KAT500? Sent from my iPhone > On Jun 2, 2018, at 5:04 PM, jeff griffin wrote: > > Hi Jack. The swr is so different between the two that there has to be a > problem. I've had this setup for 3 years and never experienced this > behavior. > > 73 Jedff kb2m > > -Original Message- > From: Jack Brindle [mailto:jackbrin...@me.com] > Sent: Saturday, June 2, 2018 4:47 PM > To: jeff griffin > Cc: elecraft@mailman.qth.net > Subject: Re: [Elecraft] KPA500 and K3 SWR meters disagree > > Jeff; > > Do I understand that for the first test you are driving the antenna through > the KPA500 and KAT500 (with KAT500 in bypass)? If so, it makes a lot of > sense that you will see different SWR. The KPA and KAT are providing a > completely different load for the K3. The better test is to feed the antenna > directly from the K3 without the KPA and KAT in-line. I would expect you to > see a closer match at that point, although I doubt they will ever be > identical due to the differences in the directional couplers in the K3 vs > the KAT500 (and KPA500 for that matter). > > Jack, W6FB > > >> On Jun 2, 2018, at 8:48 AM, jeff griffin wrote: >> >> I recently brought my KPA/KAT500 north for the summer and hooked up to my > trapped multiband fan dipole that I use here in NJ. I leave my K3 here for > remote use and use the amp at my winter home in Florida to use with my Flex > 6500 with a Steppir Vertical antenna without the KAT500 tuner. When I got up > here I installed the KIO3B option. The install went well with no issues, all > looked good so I connected the K3, P3, KAT500, and KPA500 with the Elecraft > provided cable set like I do every year. >> >> The issue I'm having is an SWR difference between the KAT500 and the K3. > For example if I use the K3's internal tuner I can on a chosen frequency > achieve an SWR of 1/1. I the put the internal K3 tuner in bypass mode and > take the KAT500 out of bypass and set to auto. I then use the xmit button on > the K3 to create a tune signal to be sent to the KAT500. The K3 then shows a > 1/1, the KAT500 about the same but the KPA500 which is in STBY mode shows > around 3/1. What this causes to happen is the Amp will fault out if I try to > use any power output. If I check the antenna with a trusted SWR meter I see > 1.3/1 at the frequency of use. I upgraded the firmware in all the devices in > use, I also did a reset of the KAT's stored frequencies memory, and checked > both the amp and tuner with the utility programs. I'm going to call Elecraft > on Monday, anyone have any ideas in the meantime I can try? >> >> 73 Jeff kb2m >> >> __ >> 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 jackbrin...@me.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 ghyoung...@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] KPA500 and K3 SWR meters disagree
Hi Jack. The swr is so different between the two that there has to be a problem. I've had this setup for 3 years and never experienced this behavior. 73 Jedff kb2m -Original Message- From: Jack Brindle [mailto:jackbrin...@me.com] Sent: Saturday, June 2, 2018 4:47 PM To: jeff griffin Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] KPA500 and K3 SWR meters disagree Jeff; Do I understand that for the first test you are driving the antenna through the KPA500 and KAT500 (with KAT500 in bypass)? If so, it makes a lot of sense that you will see different SWR. The KPA and KAT are providing a completely different load for the K3. The better test is to feed the antenna directly from the K3 without the KPA and KAT in-line. I would expect you to see a closer match at that point, although I doubt they will ever be identical due to the differences in the directional couplers in the K3 vs the KAT500 (and KPA500 for that matter). Jack, W6FB > On Jun 2, 2018, at 8:48 AM, jeff griffin wrote: > > I recently brought my KPA/KAT500 north for the summer and hooked up to my trapped multiband fan dipole that I use here in NJ. I leave my K3 here for remote use and use the amp at my winter home in Florida to use with my Flex 6500 with a Steppir Vertical antenna without the KAT500 tuner. When I got up here I installed the KIO3B option. The install went well with no issues, all looked good so I connected the K3, P3, KAT500, and KPA500 with the Elecraft provided cable set like I do every year. > > The issue I'm having is an SWR difference between the KAT500 and the K3. For example if I use the K3's internal tuner I can on a chosen frequency achieve an SWR of 1/1. I the put the internal K3 tuner in bypass mode and take the KAT500 out of bypass and set to auto. I then use the xmit button on the K3 to create a tune signal to be sent to the KAT500. The K3 then shows a 1/1, the KAT500 about the same but the KPA500 which is in STBY mode shows around 3/1. What this causes to happen is the Amp will fault out if I try to use any power output. If I check the antenna with a trusted SWR meter I see 1.3/1 at the frequency of use. I upgraded the firmware in all the devices in use, I also did a reset of the KAT's stored frequencies memory, and checked both the amp and tuner with the utility programs. I'm going to call Elecraft on Monday, anyone have any ideas in the meantime I can try? > > 73 Jeff kb2m > > __ > 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 jackbrin...@me.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] KPA500 and K3 SWR meters disagree
Thanks for the reply Don. Tried that and didn't work, still have the SWR issue. Tried the amp on a resonant frequency, and it still is showing a bad SWR, but not bad enough to always fault. 73 Jeff kb2m -Original Message- From: Don Wilhelm [mailto:donw...@embarqmail.com] Sent: Saturday, June 2, 2018 1:54 PM To: jeff griffin; elecraft@mailman.qth.net Subject: Re: [Elecraft] KPA500 and K3 SWR meters disagree Jeff, Check the coax between the KPA500 and the KAT500. Make certain the connectors are tight. Replace with a different coax if you have one. You can always do a check on the KPA500 wattmeter by connecting a dummy load to the KPA500 (no tuner). 73, Don W3FPR On 6/2/2018 11:48 AM, jeff griffin wrote: > I recently brought my KPA/KAT500 north for the summer and hooked up to my > trapped multiband fan dipole that I use here in NJ. I leave my K3 here for > remote use and use the amp at my winter home in Florida to use with my Flex > 6500 with a Steppir Vertical antenna without the KAT500 tuner. When I got up > here I installed the KIO3B option. The install went well with no issues, all > looked good so I connected the K3, P3, KAT500, and KPA500 with the Elecraft > provided cable set like I do every year. > > The issue I'm having is an SWR difference between the KAT500 and the K3. > For example if I use the K3's internal tuner I can on a chosen frequency > achieve an SWR of 1/1. I the put the internal K3 tuner in bypass mode and > take the KAT500 out of bypass and set to auto. I then use the xmit button on > the K3 to create a tune signal to be sent to the KAT500. The K3 then shows a > 1/1, the KAT500 about the same but the KPA500 which is in STBY mode shows > around 3/1. What this causes to happen is the Amp will fault out if I try to > use any power output. If I check the antenna with a trusted SWR meter I see > 1.3/1 at the frequency of use. I upgraded the firmware in all the devices in > use, I also did a reset of the KAT's stored frequencies memory, and checked > both the amp and tuner with the utility programs. I'm going to call Elecraft > on Monday, anyone have any ideas in the meantime I can try? > > 73 Jeff kb2m > > __ > 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 donw...@embarqmail.com > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KPA500 and K3 SWR meters disagree
Jeff; Do I understand that for the first test you are driving the antenna through the KPA500 and KAT500 (with KAT500 in bypass)? If so, it makes a lot of sense that you will see different SWR. The KPA and KAT are providing a completely different load for the K3. The better test is to feed the antenna directly from the K3 without the KPA and KAT in-line. I would expect you to see a closer match at that point, although I doubt they will ever be identical due to the differences in the directional couplers in the K3 vs the KAT500 (and KPA500 for that matter). Jack, W6FB > On Jun 2, 2018, at 8:48 AM, jeff griffin wrote: > > I recently brought my KPA/KAT500 north for the summer and hooked up to my > trapped multiband fan dipole that I use here in NJ. I leave my K3 here for > remote use and use the amp at my winter home in Florida to use with my Flex > 6500 with a Steppir Vertical antenna without the KAT500 tuner. When I got up > here I installed the KIO3B option. The install went well with no issues, all > looked good so I connected the K3, P3, KAT500, and KPA500 with the Elecraft > provided cable set like I do every year. > > The issue I'm having is an SWR difference between the KAT500 and the K3. For > example if I use the K3's internal tuner I can on a chosen frequency achieve > an SWR of 1/1. I the put the internal K3 tuner in bypass mode and take the > KAT500 out of bypass and set to auto. I then use the xmit button on the K3 to > create a tune signal to be sent to the KAT500. The K3 then shows a 1/1, the > KAT500 about the same but the KPA500 which is in STBY mode shows around 3/1. > What this causes to happen is the Amp will fault out if I try to use any > power output. If I check the antenna with a trusted SWR meter I see 1.3/1 at > the frequency of use. I upgraded the firmware in all the devices in use, I > also did a reset of the KAT's stored frequencies memory, and checked both the > amp and tuner with the utility programs. I'm going to call Elecraft on > Monday, anyone have any ideas in the meantime I can try? > > 73 Jeff kb2m > > __ > 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 jackbrin...@me.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] KPA500 and K3 SWR meters disagree
Jeff, Check the coax between the KPA500 and the KAT500. Make certain the connectors are tight. Replace with a different coax if you have one. You can always do a check on the KPA500 wattmeter by connecting a dummy load to the KPA500 (no tuner). 73, Don W3FPR On 6/2/2018 11:48 AM, jeff griffin wrote: I recently brought my KPA/KAT500 north for the summer and hooked up to my trapped multiband fan dipole that I use here in NJ. I leave my K3 here for remote use and use the amp at my winter home in Florida to use with my Flex 6500 with a Steppir Vertical antenna without the KAT500 tuner. When I got up here I installed the KIO3B option. The install went well with no issues, all looked good so I connected the K3, P3, KAT500, and KPA500 with the Elecraft provided cable set like I do every year. The issue I'm having is an SWR difference between the KAT500 and the K3. For example if I use the K3's internal tuner I can on a chosen frequency achieve an SWR of 1/1. I the put the internal K3 tuner in bypass mode and take the KAT500 out of bypass and set to auto. I then use the xmit button on the K3 to create a tune signal to be sent to the KAT500. The K3 then shows a 1/1, the KAT500 about the same but the KPA500 which is in STBY mode shows around 3/1. What this causes to happen is the Amp will fault out if I try to use any power output. If I check the antenna with a trusted SWR meter I see 1.3/1 at the frequency of use. I upgraded the firmware in all the devices in use, I also did a reset of the KAT's stored frequencies memory, and checked both the amp and tuner with the utility programs. I'm going to call Elecraft on Monday, anyone have any ideas in the meantime I can try? 73 Jeff kb2m __ 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 donw...@embarqmail.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] KPA500 and K3 SWR meters disagree
I recently brought my KPA/KAT500 north for the summer and hooked up to my trapped multiband fan dipole that I use here in NJ. I leave my K3 here for remote use and use the amp at my winter home in Florida to use with my Flex 6500 with a Steppir Vertical antenna without the KAT500 tuner. When I got up here I installed the KIO3B option. The install went well with no issues, all looked good so I connected the K3, P3, KAT500, and KPA500 with the Elecraft provided cable set like I do every year. The issue I'm having is an SWR difference between the KAT500 and the K3. For example if I use the K3's internal tuner I can on a chosen frequency achieve an SWR of 1/1. I the put the internal K3 tuner in bypass mode and take the KAT500 out of bypass and set to auto. I then use the xmit button on the K3 to create a tune signal to be sent to the KAT500. The K3 then shows a 1/1, the KAT500 about the same but the KPA500 which is in STBY mode shows around 3/1. What this causes to happen is the Amp will fault out if I try to use any power output. If I check the antenna with a trusted SWR meter I see 1.3/1 at the frequency of use. I upgraded the firmware in all the devices in use, I also did a reset of the KAT's stored frequencies memory, and checked both the amp and tuner with the utility programs. I'm going to call Elecraft on Monday, anyone have any ideas in the meantime I can try? 73 Jeff kb2m __ 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
