K3 6M problem
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Hello:
After returning my K3 back to the shack after Field Day, I have discovered that 6M no longer transmits with low SWR. I checked all the rear panel connections as it is interfaced through a microham MK2R+ and Stationmaster band decoder. However, I have the 6M antenna coax directly going to Antenna 2 on the radio. Using an antenna analyzer, the antenna shows excellent SWR. Using a dummy load to each antenna port, all bands shows good SWR except 6M. I updated the firmware and cycled the power but I still have the HI SWR showing with 6M. I do have the PR6 pre-amp in line, but the problem is not receive. I'm stumped. Any help appreciated. 73, Jamie WB4YDL -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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No the ATU is in bypass and the correct antenna is selected. In fact, trying
to use the antenna tuner on the 6M antenna was fruitless. As I seem to recall, the ATU does not work on this band. 73, Jamie WB4YDL -----Original Message----- From: [hidden email] [mailto:[hidden email]] On Behalf Of James C. Hall, MD Sent: Friday, July 01, 2011 11:06 AM To: [hidden email] Subject: [Elecraft] K3 6M problem Hello: After returning my K3 back to the shack after Field Day, I have discovered that 6M no longer transmits with low SWR. I checked all the rear panel connections as it is interfaced through a microham MK2R+ and Stationmaster band decoder. However, I have the 6M antenna coax directly going to Antenna 2 on the radio. Using an antenna analyzer, the antenna shows excellent SWR. Using a dummy load to each antenna port, all bands shows good SWR except 6M. I updated the firmware and cycled the power but I still have the HI SWR showing with 6M. I do have the PR6 pre-amp in line, but the problem is not receive. I'm stumped. Any help appreciated. 73, Jamie WB4YDL -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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In reply to this post by James Hall-2
Jamie, Did the antenna selection on the K3 get toggled to ANT 1 for six meters? Remember the ATN1/ANT2 is stored on a per band basis. If the rig was used in 6 with ANT 1 at field day, it's likely that ANT 1 is still selected! 73, ... Joe, W4TV On 7/1/2011 12:06 PM, James C. Hall, MD wrote: > Hello: > > > > After returning my K3 back to the shack after Field Day, I have discovered > that 6M no longer transmits with low SWR. I checked all the rear panel > connections as it is interfaced through a microham MK2R+ and Stationmaster > band decoder. However, I have the 6M antenna coax directly going to Antenna > 2 on the radio. Using an antenna analyzer, the antenna shows excellent SWR. > Using a dummy load to each antenna port, all bands shows good SWR except 6M. > I updated the firmware and cycled the power but I still have the HI SWR > showing with 6M. > > > > I do have the PR6 pre-amp in line, but the problem is not receive. > > > > I'm stumped. Any help appreciated. > > > > 73, Jamie > > WB4YDL > > Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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In reply to this post by James Hall-2
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In reply to this post by Joe Subich, W4TV-4
The radio was used at the digital station, so RTTY was the active mode. 6M
was not used on this radio. Ron, yes, you are quite correct about the ATU - it does work on 6M. :) I just never had to use it. Just for grins I switched in the ATU and could only get 3.9:1 SWR. Taking the cable off the ANT connector and putting it on my MFJ analyzer, it shows 1.3:1. Sigh ... Worked perfectly on 6M prior to taking it to FD. 73, Jamie WB4YDL -----Original Message----- From: Joe Subich, W4TV [mailto:[hidden email]] Sent: Friday, July 01, 2011 11:51 AM To: James C. Hall, MD; Elecraft Reflector Subject: Re: [Elecraft] K3 6M problem Jamie, Did the antenna selection on the K3 get toggled to ANT 1 for six meters? Remember the ATN1/ANT2 is stored on a per band basis. If the rig was used in 6 with ANT 1 at field day, it's likely that ANT 1 is still selected! 73, ... Joe, W4TV On 7/1/2011 12:06 PM, James C. Hall, MD wrote: > Hello: > > > > After returning my K3 back to the shack after Field Day, I have discovered > that 6M no longer transmits with low SWR. I checked all the rear panel > connections as it is interfaced through a microham MK2R+ and Stationmaster > band decoder. However, I have the 6M antenna coax directly going to Antenna > 2 on the radio. Using an antenna analyzer, the antenna shows excellent SWR. > Using a dummy load to each antenna port, all bands shows good SWR except 6M. > I updated the firmware and cycled the power but I still have the HI SWR > showing with 6M. > > > > I do have the PR6 pre-amp in line, but the problem is not receive. > > > > I'm stumped. Any help appreciated. > > > > 73, Jamie > > WB4YDL > > -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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In reply to this post by AC7AC
The weird part about this is that it hears great on 6M ! If the SWR was
truly high, I shouldn't be able to hear squat. Engaging the PR6 preamp does its usual thing, increases signal (and noise a bit). It's like the SWR meter is just deciding to indicate high when it's not - and of course the output power is folded back. 73, Jamie WB4YDL -----Original Message----- From: Ron D'Eau Claire [mailto:[hidden email]] Sent: Friday, July 01, 2011 12:05 PM To: 'James C. Hall, MD'; [hidden email] Subject: RE: [Elecraft] K3 6M problem Don't know if it's related Jamie, but a properly-functioning KAT3 works FB on 6 meters. Ron AC7AC -----Original Message----- No the ATU is in bypass and the correct antenna is selected. In fact, trying to use the antenna tuner on the 6M antenna was fruitless. As I seem to recall, the ATU does not work on this band. 73, Jamie WB4YDL -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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In reply to this post by James Hall-2
Normally I would tell you to connect your dummy load, enable the KAT3, tune into the dummy load then disable the tuner and try the antenna. However, I know there is an issue with the KAT3 finding the right match on 6 meters. Since you're seeing a high SWR after field day, inspect the KAT3 carefully to see if the 8 MHz trap has been damaged (extended TX into a less than ideal load). Damage to that trap will be most evident on six. 73, ... Joe, W4TV On 7/1/2011 1:25 PM, James C. Hall, MD wrote: > The radio was used at the digital station, so RTTY was the active mode. 6M > was not used on this radio. > > Ron, yes, you are quite correct about the ATU - it does work on 6M. :) I > just never had to use it. Just for grins I switched in the ATU and could > only get 3.9:1 SWR. Taking the cable off the ANT connector and putting it on > my MFJ analyzer, it shows 1.3:1. > > Sigh ... Worked perfectly on 6M prior to taking it to FD. > > 73, Jamie > WB4YDL > > -----Original Message----- > From: Joe Subich, W4TV [mailto:[hidden email]] > Sent: Friday, July 01, 2011 11:51 AM > To: James C. Hall, MD; Elecraft Reflector > Subject: Re: [Elecraft] K3 6M problem > > > > Jamie, > > Did the antenna selection on the K3 get toggled to ANT 1 for > six meters? Remember the ATN1/ANT2 is stored on a per band > basis. If the rig was used in 6 with ANT 1 at field day, it's > likely that ANT 1 is still selected! > > 73, > > ... Joe, W4TV > > > On 7/1/2011 12:06 PM, James C. Hall, MD wrote: >> Hello: >> >> >> >> After returning my K3 back to the shack after Field Day, I have discovered >> that 6M no longer transmits with low SWR. I checked all the rear panel >> connections as it is interfaced through a microham MK2R+ and Stationmaster >> band decoder. However, I have the 6M antenna coax directly going to > Antenna >> 2 on the radio. Using an antenna analyzer, the antenna shows excellent > SWR. >> Using a dummy load to each antenna port, all bands shows good SWR except > 6M. >> I updated the firmware and cycled the power but I still have the HI SWR >> showing with 6M. >> >> >> >> I do have the PR6 pre-amp in line, but the problem is not receive. >> >> >> >> I'm stumped. Any help appreciated. >> >> >> >> 73, Jamie >> >> WB4YDL >> >> > Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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Same thing happened to me about two years ago, and it was something burnt
out in the 8MHz trap. Snipped out the offending component and all was fine while I waited for a replacement from Elecraft. Stephen G4SJP On 1 July 2011 19:01, Joe Subich, W4TV <[hidden email]> wrote: > > Normally I would tell you to connect your dummy load, enable the KAT3, > tune into the dummy load then disable the tuner and try the antenna. > However, I know there is an issue with the KAT3 finding the right match > on 6 meters. > > Since you're seeing a high SWR after field day, inspect the KAT3 > carefully to see if the 8 MHz trap has been damaged (extended TX into > a less than ideal load). Damage to that trap will be most evident on > six. > > 73, > > ... Joe, W4TV > > > On 7/1/2011 1:25 PM, James C. Hall, MD wrote: > > The radio was used at the digital station, so RTTY was the active mode. > 6M > > was not used on this radio. > > > > Ron, yes, you are quite correct about the ATU - it does work on 6M. :) I > > just never had to use it. Just for grins I switched in the ATU and could > > only get 3.9:1 SWR. Taking the cable off the ANT connector and putting it > on > > my MFJ analyzer, it shows 1.3:1. > > > > Sigh ... Worked perfectly on 6M prior to taking it to FD. > > > > 73, Jamie > > WB4YDL > > > > -----Original Message----- > > From: Joe Subich, W4TV [mailto:[hidden email]] > > Sent: Friday, July 01, 2011 11:51 AM > > To: James C. Hall, MD; Elecraft Reflector > > Subject: Re: [Elecraft] K3 6M problem > > > > > > > > Jamie, > > > > Did the antenna selection on the K3 get toggled to ANT 1 for > > six meters? Remember the ATN1/ANT2 is stored on a per band > > basis. If the rig was used in 6 with ANT 1 at field day, it's > > likely that ANT 1 is still selected! > > > > 73, > > > > ... Joe, W4TV > > > > > > On 7/1/2011 12:06 PM, James C. Hall, MD wrote: > >> Hello: > >> > >> > >> > >> After returning my K3 back to the shack after Field Day, I have > discovered > >> that 6M no longer transmits with low SWR. I checked all the rear panel > >> connections as it is interfaced through a microham MK2R+ and > Stationmaster > >> band decoder. However, I have the 6M antenna coax directly going to > > Antenna > >> 2 on the radio. Using an antenna analyzer, the antenna shows excellent > > SWR. > >> Using a dummy load to each antenna port, all bands shows good SWR except > > 6M. > >> I updated the firmware and cycled the power but I still have the HI SWR > >> showing with 6M. > >> > >> > >> > >> I do have the PR6 pre-amp in line, but the problem is not receive. > >> > >> > >> > >> I'm stumped. Any help appreciated. > >> > >> > >> > >> 73, Jamie > >> > >> WB4YDL > >> > >> > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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In reply to this post by James Hall-2
Attach a GOOD (for 6m) dummy load and press ATU TUNE. I'll bet someone at field day tried to tune it into high SWR which the ATU remembers. 73, Bill |
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In reply to this post by Joe Subich, W4TV-4
OK, more data points. Since I was getting good SWR at the mW level with the
analyzer, I cranked the power down to 1 watt and pressed tune. Got good SWR and 1 watt out. OK gently walked the power up and tried again. At 1.9 watts, I would get good SWR for a second and then it indicated 8.9:1 SWR. I went out and bypassed the ICE suppressor and that made no difference. The only other radio I have that operates on 6M is my IC-706 - um, mobile. So I jerked it out of the truck and rigged it up in the shack and ran an SWR graph - less than 1.3:1 all the way. OK, so I hear FG5GP on 50.130 MHz and give him a call with 100 watts - no problem. He was 57 on my meter and he gave me a 57 report back. OK, so now I know something's afoot inside my K3. What do I need to do ? Someone mentioned clipping an offending component while waiting on a replacement part. What part do I need to order ? 73 and thanks for all the help ! Jamie, WB4YDL -----Original Message----- From: Joe Subich, W4TV [mailto:[hidden email]] Sent: Friday, July 01, 2011 1:02 PM To: James C. Hall, MD; Elecraft Reflector Subject: Re: [Elecraft] K3 6M problem Normally I would tell you to connect your dummy load, enable the KAT3, tune into the dummy load then disable the tuner and try the antenna. However, I know there is an issue with the KAT3 finding the right match on 6 meters. Since you're seeing a high SWR after field day, inspect the KAT3 carefully to see if the 8 MHz trap has been damaged (extended TX into a less than ideal load). Damage to that trap will be most evident on six. 73, ... Joe, W4TV On 7/1/2011 1:25 PM, James C. Hall, MD wrote: > The radio was used at the digital station, so RTTY was the active mode. 6M > was not used on this radio. > > Ron, yes, you are quite correct about the ATU - it does work on 6M. :) I > just never had to use it. Just for grins I switched in the ATU and could > only get 3.9:1 SWR. Taking the cable off the ANT connector and putting it on > my MFJ analyzer, it shows 1.3:1. > > Sigh ... Worked perfectly on 6M prior to taking it to FD. > > 73, Jamie > WB4YDL > > -----Original Message----- > From: Joe Subich, W4TV [mailto:[hidden email]] > Sent: Friday, July 01, 2011 11:51 AM > To: James C. Hall, MD; Elecraft Reflector > Subject: Re: [Elecraft] K3 6M problem > > > > Jamie, > > Did the antenna selection on the K3 get toggled to ANT 1 for > six meters? Remember the ATN1/ANT2 is stored on a per band > basis. If the rig was used in 6 with ANT 1 at field day, it's > likely that ANT 1 is still selected! > > 73, > > ... Joe, W4TV > > > On 7/1/2011 12:06 PM, James C. Hall, MD wrote: >> Hello: >> >> >> >> After returning my K3 back to the shack after Field Day, I have >> that 6M no longer transmits with low SWR. I checked all the rear panel >> connections as it is interfaced through a microham MK2R+ and Stationmaster >> band decoder. However, I have the 6M antenna coax directly going to > Antenna >> 2 on the radio. Using an antenna analyzer, the antenna shows excellent > SWR. >> Using a dummy load to each antenna port, all bands shows good SWR except > 6M. >> I updated the firmware and cycled the power but I still have the HI SWR >> showing with 6M. >> >> >> >> I do have the PR6 pre-amp in line, but the problem is not receive. >> >> >> >> I'm stumped. Any help appreciated. >> >> >> >> 73, Jamie >> >> WB4YDL >> >> > -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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In reply to this post by Bill W4ZV
Seems like nobody is reading the OPs posts... He's got a high indicated
SWR on the K3 transmitting into a known well-matched 6M antenna with the ATU in BYPASS.... And no, this isn't directed (only ) at you Bill ;-) 73, Ross N4RP On 7/1/2011 2:43 PM, Bill W4ZV wrote: > James Hall-2 wrote: >> It's like the SWR meter is just deciding to indicate high when it's not - >> and of course the output power is folded back. >> > Attach a GOOD (for 6m) dummy load and press ATU TUNE. I'll bet someone at > field day tried to tune it into high SWR which the ATU remembers. > > 73, Bill > > > -- > View this message in context: http://elecraft.365791.n2.nabble.com/K3-6M-problem-tp6538409p6538777.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:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html -- FCC Section 97.313(a) “At all times, an amateur station must use the minimum transmitter power necessary to carry out the desired communications.” ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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I'll repeat what I said previously today (to the guy hearing the whine from his KPA3)...contact k3support at elecraft.com or gary at elecraft.com. You'll reach a solution much faster dealing with folks (like Gary AB7MY) who know the K3 better than 99.9% of the people on this list (myself included).
I simply cannot understand why folks post to a general list rather than going to Elecraft in the first place? Seems like a good way to waste a lot of time and energy unnecessarily IMHO. 73, Bill
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And I will re-enforce what Bill said - for problems inside the K3, you
will receive the best responses from [hidden email] - what you will get here is a guess based on the experiences of whichever individual chooses to respond. Many of us on this reflector can help with setup and menu things, but when it is obvious that the problem lies inside the K3, let those who have everyday experience with the inside of the K3 handle it. The timing right now is unfortunate because a holiday weekend is drawing near, but the support guys will be available for another 3 to 4 hours. 73, Don W3FPR On 7/1/2011 3:19 PM, Bill W4ZV wrote: > I'll repeat what I said previously today (to the guy hearing the whine from > his KPA3)...contact k3support at elecraft.com or gary at elecraft.com. > You'll reach a solution much faster dealing with folks (like Gary AB7MY) who > know the K3 better than 99.9% of the people on this list (myself included). > > I simply cannot understand why folks post to a general list rather than > going to Elecraft in the first place? Seems like a good way to waste a lot > of time and energy unnecessarily IMHO. > > 73, Bill > > Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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No guarantees but I've even seen responses on the weekends and holidays! 73 and Happy 4th to all, Bill |
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In reply to this post by James Hall-2
Jamie, > OK, so now I know something's afoot inside my K3. What do I need to > do ? Someone mentioned clipping an offending component while waiting > on a replacement part. What part do I need to order ? e-mail [hidden email] ... they can give you the information to bypass the 8 MHz trap (unfortunately I failed to keep the info) until you can order a replacement/exchange KAT3. The trap is L10/C10 on the KAT3 board. One other thing to try ... swap to ANT 2. It's possible that SA1 is breaking down under power although I would expect that to be an issue on all bands. 73, ... Joe, W4TV On 7/1/2011 2:54 PM, James C. Hall, MD wrote: > OK, more data points. Since I was getting good SWR at the mW level with the > analyzer, I cranked the power down to 1 watt and pressed tune. Got good SWR > and 1 watt out. OK gently walked the power up and tried again. At 1.9 watts, > I would get good SWR for a second and then it indicated 8.9:1 SWR. > > I went out and bypassed the ICE suppressor and that made no difference. The > only other radio I have that operates on 6M is my IC-706 - um, mobile. So I > jerked it out of the truck and rigged it up in the shack and ran an SWR > graph - less than 1.3:1 all the way. OK, so I hear FG5GP on 50.130 MHz and > give him a call with 100 watts - no problem. He was 57 on my meter and he > gave me a 57 report back. > > OK, so now I know something's afoot inside my K3. What do I need to do ? > Someone mentioned clipping an offending component while waiting on a > replacement part. What part do I need to order ? > > 73 and thanks for all the help ! > > Jamie, WB4YDL > > -----Original Message----- > From: Joe Subich, W4TV [mailto:[hidden email]] > Sent: Friday, July 01, 2011 1:02 PM > To: James C. Hall, MD; Elecraft Reflector > Subject: Re: [Elecraft] K3 6M problem > > > Normally I would tell you to connect your dummy load, enable the KAT3, > tune into the dummy load then disable the tuner and try the antenna. > However, I know there is an issue with the KAT3 finding the right match > on 6 meters. > > Since you're seeing a high SWR after field day, inspect the KAT3 > carefully to see if the 8 MHz trap has been damaged (extended TX into > a less than ideal load). Damage to that trap will be most evident on > six. > > 73, > > ... Joe, W4TV > > > On 7/1/2011 1:25 PM, James C. Hall, MD wrote: >> The radio was used at the digital station, so RTTY was the active mode. 6M >> was not used on this radio. >> >> Ron, yes, you are quite correct about the ATU - it does work on 6M. :) I >> just never had to use it. Just for grins I switched in the ATU and could >> only get 3.9:1 SWR. Taking the cable off the ANT connector and putting it > on >> my MFJ analyzer, it shows 1.3:1. >> >> Sigh ... Worked perfectly on 6M prior to taking it to FD. >> >> 73, Jamie >> WB4YDL >> >> -----Original Message----- >> From: Joe Subich, W4TV [mailto:[hidden email]] >> Sent: Friday, July 01, 2011 11:51 AM >> To: James C. Hall, MD; Elecraft Reflector >> Subject: Re: [Elecraft] K3 6M problem >> >> >> >> Jamie, >> >> Did the antenna selection on the K3 get toggled to ANT 1 for >> six meters? Remember the ATN1/ANT2 is stored on a per band >> basis. If the rig was used in 6 with ANT 1 at field day, it's >> likely that ANT 1 is still selected! >> >> 73, >> >> ... Joe, W4TV >> >> >> On 7/1/2011 12:06 PM, James C. Hall, MD wrote: >>> Hello: >>> >>> >>> >>> After returning my K3 back to the shack after Field Day, I have > discovered >>> that 6M no longer transmits with low SWR. I checked all the rear panel >>> connections as it is interfaced through a microham MK2R+ and > Stationmaster >>> band decoder. However, I have the 6M antenna coax directly going to >> Antenna >>> 2 on the radio. Using an antenna analyzer, the antenna shows excellent >> SWR. >>> Using a dummy load to each antenna port, all bands shows good SWR except >> 6M. >>> I updated the firmware and cycled the power but I still have the HI SWR >>> showing with 6M. >>> >>> >>> >>> I do have the PR6 pre-amp in line, but the problem is not receive. >>> >>> >>> >>> I'm stumped. Any help appreciated. >>> >>> >>> >>> 73, Jamie >>> >>> WB4YDL >>> >>> >> > Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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In reply to this post by Don Wilhelm-4
Email has been sent and I personally talked with Richard at Elecraft. In the
process now of tracking down Gary. Will report back when I know something. 73, Jamie WB4YDL -----Original Message----- From: [hidden email] [mailto:[hidden email]] On Behalf Of Don Wilhelm Sent: Friday, July 01, 2011 2:42 PM To: [hidden email] Subject: Re: [Elecraft] K3 6M problem And I will re-enforce what Bill said - for problems inside the K3, you will receive the best responses from [hidden email] - what you will get here is a guess based on the experiences of whichever individual chooses to respond. Many of us on this reflector can help with setup and menu things, but when it is obvious that the problem lies inside the K3, let those who have everyday experience with the inside of the K3 handle it. The timing right now is unfortunate because a holiday weekend is drawing near, but the support guys will be available for another 3 to 4 hours. 73, Don W3FPR On 7/1/2011 3:19 PM, Bill W4ZV wrote: > I'll repeat what I said previously today (to the guy hearing the whine from > his KPA3)...contact k3support at elecraft.com or gary at elecraft.com. > You'll reach a solution much faster dealing with folks (like Gary AB7MY) who > know the K3 better than 99.9% of the people on this list (myself included). > > I simply cannot understand why folks post to a general list rather than > going to Elecraft in the first place? Seems like a good way to waste a lot > of time and energy unnecessarily IMHO. > > 73, Bill > > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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In reply to this post by Joe Subich, W4TV-4
Thanks Joe.
I tried both ANT1 and ANT2 connectors - no difference. I've sent the email to k3support and I personally talked with Richard. I appreciate your help ! 73, Jamie WB4YDL -----Original Message----- From: Joe Subich, W4TV [mailto:[hidden email]] Sent: Friday, July 01, 2011 2:54 PM To: James C. Hall, MD Cc: 'Elecraft Reflector' Subject: Re: [Elecraft] K3 6M problem Jamie, > OK, so now I know something's afoot inside my K3. What do I need to > do ? Someone mentioned clipping an offending component while waiting > on a replacement part. What part do I need to order ? e-mail [hidden email] ... they can give you the information to bypass the 8 MHz trap (unfortunately I failed to keep the info) until you can order a replacement/exchange KAT3. The trap is L10/C10 on the KAT3 board. One other thing to try ... swap to ANT 2. It's possible that SA1 is breaking down under power although I would expect that to be an issue on all bands. 73, ... Joe, W4TV On 7/1/2011 2:54 PM, James C. Hall, MD wrote: > OK, more data points. Since I was getting good SWR at the mW level with the > analyzer, I cranked the power down to 1 watt and pressed tune. Got good SWR > and 1 watt out. OK gently walked the power up and tried again. At 1.9 watts, > I would get good SWR for a second and then it indicated 8.9:1 SWR. > > I went out and bypassed the ICE suppressor and that made no difference. The > only other radio I have that operates on 6M is my IC-706 - um, mobile. So I > jerked it out of the truck and rigged it up in the shack and ran an SWR > graph - less than 1.3:1 all the way. OK, so I hear FG5GP on 50.130 MHz and > give him a call with 100 watts - no problem. He was 57 on my meter and he > gave me a 57 report back. > > OK, so now I know something's afoot inside my K3. What do I need to do ? > Someone mentioned clipping an offending component while waiting on a > replacement part. What part do I need to order ? > > 73 and thanks for all the help ! > > Jamie, WB4YDL > > -----Original Message----- > From: Joe Subich, W4TV [mailto:[hidden email]] > Sent: Friday, July 01, 2011 1:02 PM > To: James C. Hall, MD; Elecraft Reflector > Subject: Re: [Elecraft] K3 6M problem > > > Normally I would tell you to connect your dummy load, enable the KAT3, > tune into the dummy load then disable the tuner and try the antenna. > However, I know there is an issue with the KAT3 finding the right match > on 6 meters. > > Since you're seeing a high SWR after field day, inspect the KAT3 > carefully to see if the 8 MHz trap has been damaged (extended TX into > a less than ideal load). Damage to that trap will be most evident on > six. > > 73, > > ... Joe, W4TV > > > On 7/1/2011 1:25 PM, James C. Hall, MD wrote: >> The radio was used at the digital station, so RTTY was the active mode. >> was not used on this radio. >> >> Ron, yes, you are quite correct about the ATU - it does work on 6M. :) I >> just never had to use it. Just for grins I switched in the ATU and could >> only get 3.9:1 SWR. Taking the cable off the ANT connector and putting it > on >> my MFJ analyzer, it shows 1.3:1. >> >> Sigh ... Worked perfectly on 6M prior to taking it to FD. >> >> 73, Jamie >> WB4YDL >> >> -----Original Message----- >> From: Joe Subich, W4TV [mailto:[hidden email]] >> Sent: Friday, July 01, 2011 11:51 AM >> To: James C. Hall, MD; Elecraft Reflector >> Subject: Re: [Elecraft] K3 6M problem >> >> >> >> Jamie, >> >> Did the antenna selection on the K3 get toggled to ANT 1 for >> six meters? Remember the ATN1/ANT2 is stored on a per band >> basis. If the rig was used in 6 with ANT 1 at field day, it's >> likely that ANT 1 is still selected! >> >> 73, >> >> ... Joe, W4TV >> >> >> On 7/1/2011 12:06 PM, James C. Hall, MD wrote: >>> Hello: >>> >>> >>> >>> After returning my K3 back to the shack after Field Day, I have > discovered >>> that 6M no longer transmits with low SWR. I checked all the rear panel >>> connections as it is interfaced through a microham MK2R+ and > Stationmaster >>> band decoder. However, I have the 6M antenna coax directly going to >> Antenna >>> 2 on the radio. Using an antenna analyzer, the antenna shows excellent >> SWR. >>> Using a dummy load to each antenna port, all bands shows good SWR except >> 6M. >>> I updated the firmware and cycled the power but I still have the HI SWR >>> showing with 6M. >>> >>> >>> >>> I do have the PR6 pre-amp in line, but the problem is not receive. >>> >>> >>> >>> I'm stumped. Any help appreciated. >>> >>> >>> >>> 73, Jamie >>> >>> WB4YDL >>> >>> >> > -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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In reply to this post by Bill W4ZV
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elecraft list - (was : K3 6M problem)
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Hi Ron,
I did contact Gary in Elecraft whenever I suspected there were hardware problems. This reflector is very valuable especially when I have questions on the operation of the elecraft radios. Apart from this, there are so many learnt and knowledgeable radio professions in this list that it is a good place to ask radio related questions. From time to time, you will see me in this reflector asking 'OT' questions. You may also remember that I did even ask 'tourist information for NYC' here. TNX & 73, Johnny VR2XMC 從︰ Ron D'Eau Claire <[hidden email]> 收件人︰ [hidden email] 傳送日期︰ 2011年07月2日 (週六) 6:39 AM 主題︰ Re: [Elecraft] K3 6M problem I've been following this list for a decade now. One of the most popular uses of this list has been to bring general troubleshooting and repair questions here or just to explore why something happens. Faced with the unexpected, many of us turn to customer support as a last resort -- just as some open the manual as a last resort, Hi! And, in fact, there are a number of non-Elecraft employees here who know various aspects of the Elecraft rigs as well as the engineers who designed them. One example is Don W3FPR, but there have been others who have contributed a great deal to the Elecraft products over the years, suggesting and actually developing many design improvements to the K2 and K1 and other pre-K3 products. Many of their "mods" were documented here and tested by various list members who were unafraid to dig into their rigs. Some of those were later incorporated into the equipment design by Elecraft or made an "official" Elecraft mod. There are still a lot of solder jockeys here who remain a key part of that legacy although their numbers have been diluted by the many K3 owners whose interest is in operating, not tinkering inside the rig. Even so, many K3 owners have questions about how to interface their rigs with various external devices or how to find and utilize all the features built into the firmware. Many list members here step in to help them with information that the Elecraft support people are not likely to have or simply take the load off of Elecraft customer support. 73, Ron AC7AC ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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In reply to this post by Ross Primrose N4RP
Actually bypass for the ATU is less bypass that one might sometimes
hope for and there have been times where even when in bypass the SWR of a dummy may not look good however enabling the ATU, tuning, and then going back into bypass can solve this issue. This is why the suggestions are being made even with the content of the original post. ~Brett (N7MG) On Fri, Jul 1, 2011 at 12:09 PM, Ross Primrose N4RP <[hidden email]> wrote: > Seems like nobody is reading the OPs posts... He's got a high indicated > SWR on the K3 transmitting into a known well-matched 6M antenna with the > ATU in BYPASS.... And no, this isn't directed (only ) at you Bill ;-) > > 73, Ross N4RP > > On 7/1/2011 2:43 PM, Bill W4ZV wrote: >> James Hall-2 wrote: >>> It's like the SWR meter is just deciding to indicate high when it's not - >>> and of course the output power is folded back. >>> >> Attach a GOOD (for 6m) dummy load and press ATU TUNE. I'll bet someone at >> field day tried to tune it into high SWR which the ATU remembers. >> >> 73, Bill >> >> >> -- >> View this message in context: http://elecraft.365791.n2.nabble.com/K3-6M-problem-tp6538409p6538777.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:[hidden email] >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html > > > -- > FCC Section 97.313(a) “At all times, an amateur station must use the minimum transmitter power necessary to carry out the desired communications.” > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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