Re: [Elecraft] [KX1] Alignment Question
Chris, Are you certain the dial calibration is really off on only 40 meters? The KX1 frequency is controlled by the data sent to the DDS by the firmware. If indeed the frequency is off by 685 Hz only on 40 meters, I would suspect the firmware. Replacement is the only fix - but you will have to enter new BFO and DDS menu parameters to get the dial calibration correct. 73, Don W3FPR On 12/18/2012 2:09 AM, Chris Johnson wrote: I took my XG3 to a friend who had a very expensive service monitor. To all of our surprise, the XG3 was only a few Hz off up to about 15m and then up past 6M it was still 10hz off. This was surprising! What a great tool. The reason I checked it was I was seeing an issue with my KX1 that I have never solved. Hooking up the KX1 to the same service monitor, I noticed that my KX1 is acceptably aligned within +/-10hz on 80m, 30m, 20m. On 40m, it is ~685hz above the dialed frequency.Does anyone have any tips on adjusting just 40m? It seems the calibration procedure would impact all bands. 685hz is pretty noticeable, or am I just expecting too much? Thx Chris K6OZY __ 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] [KX1] Alignment Question
I guess using the word Dial may be misleading. I am simply trying to say that on 40m the frequency that is being transmitted on is 685 hz higher than what is on the display. This is only on 40m. The other 3 bands are pretty accurate. The BFO and DDS menu options are set to 0. On Dec 18, 2012, at 6:03 AM, Don Wilhelm w3...@embarqmail.com wrote: Chris, Are you certain the dial calibration is really off on only 40 meters? The KX1 frequency is controlled by the data sent to the DDS by the firmware. If indeed the frequency is off by 685 Hz only on 40 meters, I would suspect the firmware. Replacement is the only fix - but you will have to enter new BFO and DDS menu parameters to get the dial calibration correct. 73, Don W3FPR On 12/18/2012 2:09 AM, Chris Johnson wrote: I took my XG3 to a friend who had a very expensive service monitor. To all of our surprise, the XG3 was only a few Hz off up to about 15m and then up past 6M it was still 10hz off. This was surprising! What a great tool. The reason I checked it was I was seeing an issue with my KX1 that I have never solved. Hooking up the KX1 to the same service monitor, I noticed that my KX1 is acceptably aligned within +/-10hz on 80m, 30m, 20m. On 40m, it is ~685hz above the dialed frequency.Does anyone have any tips on adjusting just 40m? It seems the calibration procedure would impact all bands. 685hz is pretty noticeable, or am I just expecting too much? Thx Chris K6OZY __ 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] [KX1] Alignment Question
Chris, There is one thing that might produce the condition you state, and that is if you have 40 meters set for USB. Tap the band button and see if there is a u in the left of the display when the 7 digit is displayed. The KX1 firmware controls both the transmit and receive frequencies. The receive frequency is offset by whatever you set into the sidetone pitch, and the frequency indicated on the dial should be the transmit frequency. So, if the transmit frequency is indeed off, it must be due to the firmware. That has nothing to do with the BFO and DDS settings on the KX1. Are you certain the receiver you are using to listen to the KX1 is in CW mode? If it is in SSB mode, its dial indication may be shifted by the amount that receiver has set in its sidetone pitch parameter. I know Yaesu changes the displayed frequency when going from SSB to CW, and they shift the transmit frequency when in CW mode. Elecraft does it differently and always displays the transmit frequency, but shifts the frequency for receive. 73, Don W3FPR On 12/18/2012 2:39 PM, Chris Johnson wrote: I guess using the word Dial may be misleading. I am simply trying to say that on 40m the frequency that is being transmitted on is 685 hz higher than what is on the display. This is only on 40m. The other 3 bands are pretty accurate. The BFO and DDS menu options are set to 0. __ 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] [KX1] Alignment Question
Hi Don, I am using my elmer's very expensive service monitor to watch the frequency that the KX1 is generating. I set the VFO to a given frequency, type that same frequency into the service monitor, then start a solid tune on the KX1. There is a BNC cable connected between both devices. The service monitor then shows on its spectrum display the exact frequency the KX1 is generating and also shows how many Hz it is deviating from the frequency entered. Are you saying that BFO / DDS settings are only dealing with the RX portion of the KX1? I understand you thinking this because the offset is ~ 600hz, the standard offset for CW. This is not the case, and only happens on 40m. TX deviation on 80m, 30m, and 20m is only off by a few hz. If this is controlled by the firmware, how can this be calibrated? I picked up a second KX1 off eBay this week for an emergency radio and will also check its alignment. Thx Chris K6OZY On Dec 18, 2012, at 1:26 PM, Don Wilhelm w3...@embarqmail.com wrote: Chris, There is one thing that might produce the condition you state, and that is if you have 40 meters set for USB. Tap the band button and see if there is a u in the left of the display when the 7 digit is displayed. The KX1 firmware controls both the transmit and receive frequencies. The receive frequency is offset by whatever you set into the sidetone pitch, and the frequency indicated on the dial should be the transmit frequency. So, if the transmit frequency is indeed off, it must be due to the firmware. That has nothing to do with the BFO and DDS settings on the KX1. Are you certain the receiver you are using to listen to the KX1 is in CW mode? If it is in SSB mode, its dial indication may be shifted by the amount that receiver has set in its sidetone pitch parameter. I know Yaesu changes the displayed frequency when going from SSB to CW, and they shift the transmit frequency when in CW mode. Elecraft does it differently and always displays the transmit frequency, but shifts the frequency for receive. 73, Don W3FPR On 12/18/2012 2:39 PM, Chris Johnson wrote: I guess using the word Dial may be misleading. I am simply trying to say that on 40m the frequency that is being transmitted on is 685 hz higher than what is on the display. This is only on 40m. The other 3 bands are pretty accurate. The BFO and DDS menu options are set to 0. __ 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] [KX1] Alignment Question
Chris, Let me be specific and succinct. There are only 2 conditions that would cause that behavior. 1 - The KX1 is set to receive upper sideband on 40 meters. 2 - the firmware is sending incorrect data to the DDS. Re-read my last email. I do not question the accuracy of the service monitor, but I do question whether the KX1 is set for USB on 40 meters. If the KX1 is indeed set for NOR (CW) mode, then there is a fault with the firmware. 73, Don W3FPR On 12/18/2012 10:44 PM, Chris Johnson wrote: Hi Don, I am using my elmer's very expensive service monitor to watch the frequency that the KX1 is generating. I set the VFO to a given frequency, type that same frequency into the service monitor, then start a solid tune on the KX1. There is a BNC cable connected between both devices. The service monitor then shows on its spectrum display the exact frequency the KX1 is generating and also shows how many Hz it is deviating from the frequency entered. Are you saying that BFO / DDS settings are only dealing with the RX portion of the KX1? I understand you thinking this because the offset is ~ 600hz, the standard offset for CW. This is not the case, and only happens on 40m. TX deviation on 80m, 30m, and 20m is only off by a few hz. If this is controlled by the firmware, how can this be calibrated? I picked up a second KX1 off eBay this week for an emergency radio and will also check its alignment. Thx Chris K6OZY On Dec 18, 2012, at 1:26 PM, Don Wilhelm w3...@embarqmail.com wrote: Chris, There is one thing that might produce the condition you state, and that is if you have 40 meters set for USB. Tap the band button and see if there is a u in the left of the display when the 7 digit is displayed. The KX1 firmware controls both the transmit and receive frequencies. The receive frequency is offset by whatever you set into the sidetone pitch, and the frequency indicated on the dial should be the transmit frequency. So, if the transmit frequency is indeed off, it must be due to the firmware. That has nothing to do with the BFO and DDS settings on the KX1. Are you certain the receiver you are using to listen to the KX1 is in CW mode? If it is in SSB mode, its dial indication may be shifted by the amount that receiver has set in its sidetone pitch parameter. I know Yaesu changes the displayed frequency when going from SSB to CW, and they shift the transmit frequency when in CW mode. Elecraft does it differently and always displays the transmit frequency, but shifts the frequency for receive. 73, Don W3FPR On 12/18/2012 2:39 PM, Chris Johnson wrote: I guess using the word Dial may be misleading. I am simply trying to say that on 40m the frequency that is being transmitted on is 685 hz higher than what is on the display. This is only on 40m. The other 3 bands are pretty accurate. The BFO and DDS menu options are set to 0. __ 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
