Re: [Elecraft] K1 no power out B2
Hey Mike, thanks for all your suggestions! I reflowed the solder on K3, l11 and l12 on the 40/20 board and I now have 20 meters! So I need to look carefully at the 30/17 board now. What really threw me was that both boards had the same symptoms. Thanks. Joe Mike Morrow k...@earthlink.net wrote: But...let me make one more suggestion. Re-perform the transmitter-related tune up exactly as specified in the manual. Tuning the two-band boards can be very critical and require adjustments of the coils well away from where they were peaked for receiver tune up. The adjustments of the filter.board coils is far more critical for transmit than receive. The receiver adjustments just get the coils in the ball park...the transmitter adjustments are what count. KK5F -Original Message- From: Mike Morrow k...@earthlink.net Sent: Jun 11, 2012 8:44 PM To: Joe McGerald astro_cr...@hotmail.com Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] K1 no power out B2 If you will entertain a suggestion from the primodial ooz...check everything on the filter board at K3 (contacts 1, 4, 7, 10), L11, L12, C24, C25, and C26. Check with ohmeter that ther is low ohm continuity between K3 contact 4 to 7, and high resistance from those two contacts to ground. All these checks can be performed with the filter board out of the K1. KK5F -Original Message- From: Joe McGerald astro_cr...@hotmail.com Sent: Jun 11, 2012 6:59 PM To: d...@w3fpr.com Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] K1 no power out B2 Well I just swapped the four band board into the questionable K1 and it worked fine. Also I swapped one of the two questionable 2 band boards into the working K1 and it did the same thing there, so I guess I indeed have two non-functional 2 band boards. Both do the same thing -- work on Band 1 (40M on one, 30M on the other) but don't work on TRANSMIT on Band 2. (20 and 17 respectively.) They do receive on these bands however. Any assistance in this mystery is gratefully appreciated. Thanks. Joe AF6NI -Original Message- From: Don Wilhelm [mailto:w3...@embarqmail.com] Sent: Saturday, June 09, 2012 7:28 PM To: Joe McGerald Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] K1 no power out B2 Joe, There is no difference between the SA602 and the SA612. They come off the same line and while they all conform to the better SA612 specs, some hams are convinced that the SA602s are better, so they label some of them '602 - You will find many ham laments about the demise of the '602. but in fact the '612 is a direct replacement. Use the '612. As the prior poster has suggested, the RF board path from from P1 pin 2 to U7 pin 4 is suspect, as is the path between P1 pin 1 ans U7 pin 5. Yes, it is possible to have enough signal coupling to provide good receive but not enough to give adequate pre-mixer signal input on one band. 73, Don W3FPR On 6/9/2012 9:18 PM, Joe McGerald wrote: Thanks Mike. I double checked all solder joints and components in the area. I also checked all voltages on U7. They are correct. Guess it could be the chip. BTW the chip is the alternate, the 612. Joe Mike Morrowk...@earthlink.net wrote: The only path through the KFL1-2 that is not in common use for both bands is the pre-mixer bandpass filter connections at P1/J6, where band 1 path goes through pin 1 and band 2 path goes through pin 2. This suggests that you need to check the RF board from J6-pin 2 back to U7 pin 5, including the pin on the SA602 that is plugged in at the socket. However, this path being open should also have degraded band 2 reception as well as transmission, though perhaps not asy markedly. Mike / KK5F -Original Message- From: AF6NIastro_cr...@hotmail.com Sent: Jun 9, 2012 2:05 PM To: elecraft@mailman.qth.net Subject: [Elecraft] K1 no power out B2 I just completed assembling a K1. It works fine on receive and transmits properly on B1 but not on B2. I have two 2 band filter boards, a 40/20 that I've had for a while and a 30/17 that I just built. Both work the same in the K1. I have full power on B1, but nothing on B2. The display shows 0.1 watts but my Elecraft W1 wattmeter shows no output. As I said above, receive seems OK on both B1 and B2. Any suggestions gratefully accepted! Thanks and 73. Joe -- View this message in context: http://elecraft.365791.n2.nabble.com/K1-no-power-out-B2-tp7557347.htm l 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 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http
Re: [Elecraft] K1 no power out B2
I reflowed the solder on K3, l11 and l12 on the 40/20 board and I now have 20 meters! So I need to look carefully at the 30/17 board now. Good progress, Joe. At least you didn't fall into the trap of thinking that when the filter board coils had been peaked for receive that there was no need to again adjust them during transmitter alignment. That was a common error in the K1 early days, especially if the builder had used (unnecessarily IMO) Spectrogram to align the receiver...that seemed to create a reluctance to alter the coil adjustments during the transmitter alignment. The result then was always similar...no transmitter output. I love my 12-year-old K1 sn 175. I've had it on 15m for several weeks continuously, with only 15 feet of hook-up wire as an indoor antenna (receive only). It still fascinates me to hear JAs and ZLs on the K1 at mid-night local cdt. Mike / KK5F __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K1 no power out B2
They sure are fun. I've had a couple but this is the 1st I've built. Thanks again. Joe PS just had my first QSO with it, and it was on 20m. Mike Morrow k...@earthlink.net wrote: I reflowed the solder on K3, l11 and l12 on the 40/20 board and I now have 20 meters! So I need to look carefully at the 30/17 board now. Good progress, Joe. At least you didn't fall into the trap of thinking that when the filter board coils had been peaked for receive that there was no need to again adjust them during transmitter alignment. That was a common error in the K1 early days, especially if the builder had used (unnecessarily IMO) Spectrogram to align the receiver...that seemed to create a reluctance to alter the coil adjustments during the transmitter alignment. The result then was always similar...no transmitter output. I love my 12-year-old K1 sn 175. I've had it on 15m for several weeks continuously, with only 15 feet of hook-up wire as an indoor antenna (receive only). It still fascinates me to hear JAs and ZLs on the K1 at mid-night local cdt. Mike / KK5F __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K1 no power out B2
Well I just swapped the four band board into the questionable K1 and it worked fine. Also I swapped one of the two questionable 2 band boards into the working K1 and it did the same thing there, so I guess I indeed have two non-functional 2 band boards. Both do the same thing -- work on Band 1 (40M on one, 30M on the other) but don't work on TRANSMIT on Band 2. (20 and 17 respectively.) They do receive on these bands however. Any assistance in this mystery is gratefully appreciated. Thanks. Joe AF6NI -Original Message- From: Don Wilhelm [mailto:w3...@embarqmail.com] Sent: Saturday, June 09, 2012 7:28 PM To: Joe McGerald Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] K1 no power out B2 Joe, There is no difference between the SA602 and the SA612. They come off the same line and while they all conform to the better SA612 specs, some hams are convinced that the SA602s are better, so they label some of them '602 - You will find many ham laments about the demise of the '602. but in fact the '612 is a direct replacement. Use the '612. As the prior poster has suggested, the RF board path from from P1 pin 2 to U7 pin 4 is suspect, as is the path between P1 pin 1 ans U7 pin 5. Yes, it is possible to have enough signal coupling to provide good receive but not enough to give adequate pre-mixer signal input on one band. 73, Don W3FPR On 6/9/2012 9:18 PM, Joe McGerald wrote: Thanks Mike. I double checked all solder joints and components in the area. I also checked all voltages on U7. They are correct. Guess it could be the chip. BTW the chip is the alternate, the 612. Joe Mike Morrowk...@earthlink.net wrote: The only path through the KFL1-2 that is not in common use for both bands is the pre-mixer bandpass filter connections at P1/J6, where band 1 path goes through pin 1 and band 2 path goes through pin 2. This suggests that you need to check the RF board from J6-pin 2 back to U7 pin 5, including the pin on the SA602 that is plugged in at the socket. However, this path being open should also have degraded band 2 reception as well as transmission, though perhaps not asy markedly. Mike / KK5F -Original Message- From: AF6NIastro_cr...@hotmail.com Sent: Jun 9, 2012 2:05 PM To: elecraft@mailman.qth.net Subject: [Elecraft] K1 no power out B2 I just completed assembling a K1. It works fine on receive and transmits properly on B1 but not on B2. I have two 2 band filter boards, a 40/20 that I've had for a while and a 30/17 that I just built. Both work the same in the K1. I have full power on B1, but nothing on B2. The display shows 0.1 watts but my Elecraft W1 wattmeter shows no output. As I said above, receive seems OK on both B1 and B2. Any suggestions gratefully accepted! Thanks and 73. Joe -- View this message in context: http://elecraft.365791.n2.nabble.com/K1-no-power-out-B2-tp7557347.htm l 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 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K1 no power out B2
If you will entertain a suggestion from the primodial ooz...check everything on the filter board at K3 (contacts 1, 4, 7, 10), L11, L12, C24, C25, and C26. Check with ohmeter that ther is low ohm continuity between K3 contact 4 to 7, and high resistance from those two contacts to ground. All these checks can be performed with the filter board out of the K1. KK5F -Original Message- From: Joe McGerald astro_cr...@hotmail.com Sent: Jun 11, 2012 6:59 PM To: d...@w3fpr.com Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] K1 no power out B2 Well I just swapped the four band board into the questionable K1 and it worked fine. Also I swapped one of the two questionable 2 band boards into the working K1 and it did the same thing there, so I guess I indeed have two non-functional 2 band boards. Both do the same thing -- work on Band 1 (40M on one, 30M on the other) but don't work on TRANSMIT on Band 2. (20 and 17 respectively.) They do receive on these bands however. Any assistance in this mystery is gratefully appreciated. Thanks. Joe AF6NI -Original Message- From: Don Wilhelm [mailto:w3...@embarqmail.com] Sent: Saturday, June 09, 2012 7:28 PM To: Joe McGerald Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] K1 no power out B2 Joe, There is no difference between the SA602 and the SA612. They come off the same line and while they all conform to the better SA612 specs, some hams are convinced that the SA602s are better, so they label some of them '602 - You will find many ham laments about the demise of the '602. but in fact the '612 is a direct replacement. Use the '612. As the prior poster has suggested, the RF board path from from P1 pin 2 to U7 pin 4 is suspect, as is the path between P1 pin 1 ans U7 pin 5. Yes, it is possible to have enough signal coupling to provide good receive but not enough to give adequate pre-mixer signal input on one band. 73, Don W3FPR On 6/9/2012 9:18 PM, Joe McGerald wrote: Thanks Mike. I double checked all solder joints and components in the area. I also checked all voltages on U7. They are correct. Guess it could be the chip. BTW the chip is the alternate, the 612. Joe Mike Morrowk...@earthlink.net wrote: The only path through the KFL1-2 that is not in common use for both bands is the pre-mixer bandpass filter connections at P1/J6, where band 1 path goes through pin 1 and band 2 path goes through pin 2. This suggests that you need to check the RF board from J6-pin 2 back to U7 pin 5, including the pin on the SA602 that is plugged in at the socket. However, this path being open should also have degraded band 2 reception as well as transmission, though perhaps not asy markedly. Mike / KK5F -Original Message- From: AF6NIastro_cr...@hotmail.com Sent: Jun 9, 2012 2:05 PM To: elecraft@mailman.qth.net Subject: [Elecraft] K1 no power out B2 I just completed assembling a K1. It works fine on receive and transmits properly on B1 but not on B2. I have two 2 band filter boards, a 40/20 that I've had for a while and a 30/17 that I just built. Both work the same in the K1. I have full power on B1, but nothing on B2. The display shows 0.1 watts but my Elecraft W1 wattmeter shows no output. As I said above, receive seems OK on both B1 and B2. Any suggestions gratefully accepted! Thanks and 73. Joe -- View this message in context: http://elecraft.365791.n2.nabble.com/K1-no-power-out-B2-tp7557347.htm l 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 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K1 no power out B2
But...let me make one more suggestion. Re-perform the transmitter-related tune up exactly as specified in the manual. Tuning the two-band boards can be very critical and require adjustments of the coils well away from where they were peaked for receiver tune up. The adjustments of the filter.board coils is far more critical for transmit than receive. The receiver adjustments just get the coils in the ball park...the transmitter adjustments are what count. KK5F -Original Message- From: Mike Morrow k...@earthlink.net Sent: Jun 11, 2012 8:44 PM To: Joe McGerald astro_cr...@hotmail.com Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] K1 no power out B2 If you will entertain a suggestion from the primodial ooz...check everything on the filter board at K3 (contacts 1, 4, 7, 10), L11, L12, C24, C25, and C26. Check with ohmeter that ther is low ohm continuity between K3 contact 4 to 7, and high resistance from those two contacts to ground. All these checks can be performed with the filter board out of the K1. KK5F -Original Message- From: Joe McGerald astro_cr...@hotmail.com Sent: Jun 11, 2012 6:59 PM To: d...@w3fpr.com Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] K1 no power out B2 Well I just swapped the four band board into the questionable K1 and it worked fine. Also I swapped one of the two questionable 2 band boards into the working K1 and it did the same thing there, so I guess I indeed have two non-functional 2 band boards. Both do the same thing -- work on Band 1 (40M on one, 30M on the other) but don't work on TRANSMIT on Band 2. (20 and 17 respectively.) They do receive on these bands however. Any assistance in this mystery is gratefully appreciated. Thanks. Joe AF6NI -Original Message- From: Don Wilhelm [mailto:w3...@embarqmail.com] Sent: Saturday, June 09, 2012 7:28 PM To: Joe McGerald Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] K1 no power out B2 Joe, There is no difference between the SA602 and the SA612. They come off the same line and while they all conform to the better SA612 specs, some hams are convinced that the SA602s are better, so they label some of them '602 - You will find many ham laments about the demise of the '602. but in fact the '612 is a direct replacement. Use the '612. As the prior poster has suggested, the RF board path from from P1 pin 2 to U7 pin 4 is suspect, as is the path between P1 pin 1 ans U7 pin 5. Yes, it is possible to have enough signal coupling to provide good receive but not enough to give adequate pre-mixer signal input on one band. 73, Don W3FPR On 6/9/2012 9:18 PM, Joe McGerald wrote: Thanks Mike. I double checked all solder joints and components in the area. I also checked all voltages on U7. They are correct. Guess it could be the chip. BTW the chip is the alternate, the 612. Joe Mike Morrowk...@earthlink.net wrote: The only path through the KFL1-2 that is not in common use for both bands is the pre-mixer bandpass filter connections at P1/J6, where band 1 path goes through pin 1 and band 2 path goes through pin 2. This suggests that you need to check the RF board from J6-pin 2 back to U7 pin 5, including the pin on the SA602 that is plugged in at the socket. However, this path being open should also have degraded band 2 reception as well as transmission, though perhaps not asy markedly. Mike / KK5F -Original Message- From: AF6NIastro_cr...@hotmail.com Sent: Jun 9, 2012 2:05 PM To: elecraft@mailman.qth.net Subject: [Elecraft] K1 no power out B2 I just completed assembling a K1. It works fine on receive and transmits properly on B1 but not on B2. I have two 2 band filter boards, a 40/20 that I've had for a while and a 30/17 that I just built. Both work the same in the K1. I have full power on B1, but nothing on B2. The display shows 0.1 watts but my Elecraft W1 wattmeter shows no output. As I said above, receive seems OK on both B1 and B2. Any suggestions gratefully accepted! Thanks and 73. Joe -- View this message in context: http://elecraft.365791.n2.nabble.com/K1-no-power-out-B2-tp7557347.htm l 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 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net
[Elecraft] K1 no power out B2
I just completed assembling a K1. It works fine on receive and transmits properly on B1 but not on B2. I have two 2 band filter boards, a 40/20 that I've had for a while and a 30/17 that I just built. Both work the same in the K1. I have full power on B1, but nothing on B2. The display shows 0.1 watts but my Elecraft W1 wattmeter shows no output. As I said above, receive seems OK on both B1 and B2. Any suggestions gratefully accepted! Thanks and 73. Joe -- View this message in context: http://elecraft.365791.n2.nabble.com/K1-no-power-out-B2-tp7557347.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
Re: [Elecraft] K1 no power out B2
The only path through the KFL1-2 that is not in common use for both bands is the pre-mixer bandpass filter connections at P1/J6, where band 1 path goes through pin 1 and band 2 path goes through pin 2. This suggests that you need to check the RF board from J6-pin 2 back to U7 pin 5, including the pin on the SA602 that is plugged in at the socket. However, this path being open should also have degraded band 2 reception as well as transmission, though perhaps not asy markedly. Mike / KK5F -Original Message- From: AF6NI astro_cr...@hotmail.com Sent: Jun 9, 2012 2:05 PM To: elecraft@mailman.qth.net Subject: [Elecraft] K1 no power out B2 I just completed assembling a K1. It works fine on receive and transmits properly on B1 but not on B2. I have two 2 band filter boards, a 40/20 that I've had for a while and a 30/17 that I just built. Both work the same in the K1. I have full power on B1, but nothing on B2. The display shows 0.1 watts but my Elecraft W1 wattmeter shows no output. As I said above, receive seems OK on both B1 and B2. Any suggestions gratefully accepted! Thanks and 73. Joe -- View this message in context: http://elecraft.365791.n2.nabble.com/K1-no-power-out-B2-tp7557347.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 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K1 no power out B2
I wrote: ...including the pin on the SA602 that is plugged in at the socket. Ignore that part...U7 is soldered in...there is no socket. Mike / KK5F __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K1 no power out B2
__ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K1 no power out B2
Hal my issue is the same whether I have the 40/20 or 30/17 board installed so it would need to be two crystals - one on each board. I guess that's possible. I have another k1 with a 4 band board, but I'm hesitant to put that board in because I think its also possible that something on the rf board is frying a component on the filter board. 73 Joe Hjalmar Duklæt dukl...@broadpark.no wrote: I just had the same problem. It turned out to be the 22MHz crystal on the pre-mixer bandpass filter. Changed the crystal and that was that. 73 de Hal/LA4XX On 12-06-09, Mike Morrow k...@earthlink.net wrote: The only path through the KFL1-2 that is not in common use for both bands is the pre-mixer bandpass filter connections at P1/J6, where band 1 path goes through pin 1 and band 2 path goes through pin 2. This suggests that you need to check the RF board from J6-pin 2 back to U7 pin 5, including the pin on the SA602 that is plugged in at the socket. However, this path being open should also have degraded band 2 reception as well as transmission, though perhaps not asy markedly. Mike / KK5F -Original Message- From: AF6NI astro_cr...@hotmail.com Sent: Jun 9, 2012 2:05 PM To: elecraft@mailman.qth.net Subject: [Elecraft] K1 no power out B2 I just completed assembling a K1. It works fine on receive and transmits properly on B1 but not on B2. I have two 2 band filter boards, a 40/20 that I've had for a while and a 30/17 that I just built. Both work the same in the K1. I have full power on B1, but nothing on B2. The display shows 0.1 watts but my Elecraft W1 wattmeter shows no output. As I said above, receive seems OK on both B1 and B2. Any suggestions gratefully accepted! Thanks and 73. Joe -- View this message in context: http://elecraft.365791.n2.nabble.com/K1-no-power-out-B2-tp7557347.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 Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K1 no power out B2
Thanks Mike. I double checked all solder joints and components in the area. I also checked all voltages on U7. They are correct. Guess it could be the chip. BTW the chip is the alternate, the 612. Joe Mike Morrow k...@earthlink.net wrote: The only path through the KFL1-2 that is not in common use for both bands is the pre-mixer bandpass filter connections at P1/J6, where band 1 path goes through pin 1 and band 2 path goes through pin 2. This suggests that you need to check the RF board from J6-pin 2 back to U7 pin 5, including the pin on the SA602 that is plugged in at the socket. However, this path being open should also have degraded band 2 reception as well as transmission, though perhaps not asy markedly. Mike / KK5F -Original Message- From: AF6NI astro_cr...@hotmail.com Sent: Jun 9, 2012 2:05 PM To: elecraft@mailman.qth.net Subject: [Elecraft] K1 no power out B2 I just completed assembling a K1. It works fine on receive and transmits properly on B1 but not on B2. I have two 2 band filter boards, a 40/20 that I've had for a while and a 30/17 that I just built. Both work the same in the K1. I have full power on B1, but nothing on B2. The display shows 0.1 watts but my Elecraft W1 wattmeter shows no output. As I said above, receive seems OK on both B1 and B2. Any suggestions gratefully accepted! Thanks and 73. Joe -- View this message in context: http://elecraft.365791.n2.nabble.com/K1-no-power-out-B2-tp7557347.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 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K1 no power out B2
Joe, There is no difference between the SA602 and the SA612. They come off the same line and while they all conform to the better SA612 specs, some hams are convinced that the SA602s are better, so they label some of them '602 - You will find many ham laments about the demise of the '602. but in fact the '612 is a direct replacement. Use the '612. As the prior poster has suggested, the RF board path from from P1 pin 2 to U7 pin 4 is suspect, as is the path between P1 pin 1 ans U7 pin 5. Yes, it is possible to have enough signal coupling to provide good receive but not enough to give adequate pre-mixer signal input on one band. 73, Don W3FPR On 6/9/2012 9:18 PM, Joe McGerald wrote: Thanks Mike. I double checked all solder joints and components in the area. I also checked all voltages on U7. They are correct. Guess it could be the chip. BTW the chip is the alternate, the 612. Joe Mike Morrowk...@earthlink.net wrote: The only path through the KFL1-2 that is not in common use for both bands is the pre-mixer bandpass filter connections at P1/J6, where band 1 path goes through pin 1 and band 2 path goes through pin 2. This suggests that you need to check the RF board from J6-pin 2 back to U7 pin 5, including the pin on the SA602 that is plugged in at the socket. However, this path being open should also have degraded band 2 reception as well as transmission, though perhaps not asy markedly. Mike / KK5F -Original Message- From: AF6NIastro_cr...@hotmail.com Sent: Jun 9, 2012 2:05 PM To: elecraft@mailman.qth.net Subject: [Elecraft] K1 no power out B2 I just completed assembling a K1. It works fine on receive and transmits properly on B1 but not on B2. I have two 2 band filter boards, a 40/20 that I've had for a while and a 30/17 that I just built. Both work the same in the K1. I have full power on B1, but nothing on B2. The display shows 0.1 watts but my Elecraft W1 wattmeter shows no output. As I said above, receive seems OK on both B1 and B2. Any suggestions gratefully accepted! Thanks and 73. Joe -- View this message in context: http://elecraft.365791.n2.nabble.com/K1-no-power-out-B2-tp7557347.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 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K1 no power out B2
As the prior poster has suggested, the RF board path from from P1 pin 2 to U7 pin 4 is suspect... Not really. That's the band 1 path, for which satisfactory performance was reported. ...as is the path between P1 pin 1 ans U7 pin 5. Which, assuming the fault does not stem from the same unlikely pathology on both filter boards, still seems most probable (although P1 is on the KFL1-2, so J6 on the RF board is more accurate). You could substitute the KFL1-4 from your other K1 to see if this or related problems show up. The four-band board couples the pre-mixer tuning circuit differently than does the two-band board, using U7 output from *both* pin 4 and 5 together on all four bands. A problem with the U7 pin 5 path on the K1 could show up on all four bands rather than just band 2. I would not worry about the K1 zapping the KFL1-4. The MCU is the only chip and it is obviously working on all your KFLs. Mike / KK5F I would not worry about anything coming from the K1 zapping anything on a filter board. The filter board __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K1 no power out B2
Thanks all. I checked all solder joints and components in the pre-mixer and reflowed solder on U7. Still the same. I'll try the 4 band board tomorrow. Joe Don Wilhelm w3...@embarqmail.com wrote: Joe, There is no difference between the SA602 and the SA612. They come off the same line and while they all conform to the better SA612 specs, some hams are convinced that the SA602s are better, so they label some of them '602 - You will find many ham laments about the demise of the '602. but in fact the '612 is a direct replacement. Use the '612. As the prior poster has suggested, the RF board path from from P1 pin 2 to U7 pin 4 is suspect, as is the path between P1 pin 1 ans U7 pin 5. Yes, it is possible to have enough signal coupling to provide good receive but not enough to give adequate pre-mixer signal input on one band. 73, Don W3FPR On 6/9/2012 9:18 PM, Joe McGerald wrote: Thanks Mike. I double checked all solder joints and components in the area. I also checked all voltages on U7. They are correct. Guess it could be the chip. BTW the chip is the alternate, the 612. Joe Mike Morrowk...@earthlink.net wrote: The only path through the KFL1-2 that is not in common use for both bands is the pre-mixer bandpass filter connections at P1/J6, where band 1 path goes through pin 1 and band 2 path goes through pin 2. This suggests that you need to check the RF board from J6-pin 2 back to U7 pin 5, including the pin on the SA602 that is plugged in at the socket. However, this path being open should also have degraded band 2 reception as well as transmission, though perhaps not asy markedly. Mike / KK5F -Original Message- From: AF6NIastro_cr...@hotmail.com Sent: Jun 9, 2012 2:05 PM To: elecraft@mailman.qth.net Subject: [Elecraft] K1 no power out B2 I just completed assembling a K1. It works fine on receive and transmits properly on B1 but not on B2. I have two 2 band filter boards, a 40/20 that I've had for a while and a 30/17 that I just built. Both work the same in the K1. I have full power on B1, but nothing on B2. The display shows 0.1 watts but my Elecraft W1 wattmeter shows no output. As I said above, receive seems OK on both B1 and B2. Any suggestions gratefully accepted! Thanks and 73. Joe -- View this message in context: http://elecraft.365791.n2.nabble.com/K1-no-power-out-B2-tp7557347.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 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
