[Elecraft] Help on PSK required:
I'm not sure this is the correct forum to ask for answers, but I am using my K3 My setup consists of a PC running Hamlogger 32 V 3.17 with both MMTTY and MMVARI embedded. I have a USB Microkeyer II from microham and of course my K3 with latest software. I have been running the K3 since last June. I have been using RTTY using both Logger 32 and Win-test without any problems what-so-ever and in fact this its a great set up with the dual pass band filters in the K3. This week I tried PSK31 - nothing. I have called CQ till I am blue in the face and get no reply. I called a local ham to monitor my signals and he says there is NO signal only a pattern on his screen, but he can tell when I start and stop tansmitting. I have the K3 set to Data Mode - PSK D 31bps I am using the official Microham interface to radio leads connected to Line in / Line Out. I have set the levels admittedly using RTTY ASs I said everything works fb in RTTY. I can monitor the PSK tones using the K3 monitor facility and to me (not an PSK expert) they sound OK. I get output from the rig set at 25 watts. I can also see this on my power meter. My SWR is good. I have tried varying the audio output from my PC to the interface to the rig from high to zero, but I cannot detect any material difference in the level of tone via the monitor facility. I have listened to my output on another receiver and to me it sounds OK, but my friend insists it is not. It may be that I am grossly over modulating - I dont know. Apart from varying the input in the Line IN socket via the K3 menue, is there any other adjustment? How have others set up their K3 to send PSK. On receive, my set up works very nicely and I have received many DX stations using the filters in the K3, but I cannot TX for some reason. I tried downloading several PSK software programmes and run them independently, but still I cannot get any other station to see my signal. I have run out of ideas?Can anybody help? Tom GM4FDM __ 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] Help on PSK required:
Change mode to Data A. Seems to be a common problem. Steve Ellington n...@carolina.rr.com - Original Message - From: tom wylie thomaswy...@sky.com To: elecraft@mailman.qth.net Sent: Wednesday, April 29, 2009 8:41 AM Subject: [Elecraft] Help on PSK required: I'm not sure this is the correct forum to ask for answers, but I am using my K3 My setup consists of a PC running Hamlogger 32 V 3.17 with both MMTTY and MMVARI embedded. I have a USB Microkeyer II from microham and of course my K3 with latest software. I have been running the K3 since last June. I have been using RTTY using both Logger 32 and Win-test without any problems what-so-ever and in fact this its a great set up with the dual pass band filters in the K3. This week I tried PSK31 - nothing. I have called CQ till I am blue in the face and get no reply. I called a local ham to monitor my signals and he says there is NO signal only a pattern on his screen, but he can tell when I start and stop tansmitting. I have the K3 set to Data Mode - PSK D 31bps I am using the official Microham interface to radio leads connected to Line in / Line Out. I have set the levels admittedly using RTTY ASs I said everything works fb in RTTY. I can monitor the PSK tones using the K3 monitor facility and to me (not an PSK expert) they sound OK. I get output from the rig set at 25 watts. I can also see this on my power meter. My SWR is good. I have tried varying the audio output from my PC to the interface to the rig from high to zero, but I cannot detect any material difference in the level of tone via the monitor facility. I have listened to my output on another receiver and to me it sounds OK, but my friend insists it is not. It may be that I am grossly over modulating - I dont know. Apart from varying the input in the Line IN socket via the K3 menue, is there any other adjustment? How have others set up their K3 to send PSK. On receive, my set up works very nicely and I have received many DX stations using the filters in the K3, but I cannot TX for some reason. I tried downloading several PSK software programmes and run them independently, but still I cannot get any other station to see my signal. I have run out of ideas?Can anybody help? Tom GM4FDM __ 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] Help on PSK required:
I have called CQ till I am blue in the face and get no reply. I called a local ham to monitor my signals and he says there is NO signal only a pattern on his screen, but he can tell when I start and stop tansmitting. I have the K3 set to Data Mode - PSK D 31bps Use Data A or AFSK A. PSK D (PSK Direct) is for PSK from the paddles or using the KY commands via a terminal (e.g., the K3 Utility software). 73, ... Joe, W4TV -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of tom wylie Sent: Wednesday, April 29, 2009 8:42 AM To: elecraft@mailman.qth.net Subject: [Elecraft] Help on PSK required: I'm not sure this is the correct forum to ask for answers, but I am using my K3 My setup consists of a PC running Hamlogger 32 V 3.17 with both MMTTY and MMVARI embedded. I have a USB Microkeyer II from microham and of course my K3 with latest software. I have been running the K3 since last June. I have been using RTTY using both Logger 32 and Win-test without any problems what-so-ever and in fact this its a great set up with the dual pass band filters in the K3. This week I tried PSK31 - nothing. I have called CQ till I am blue in the face and get no reply. I called a local ham to monitor my signals and he says there is NO signal only a pattern on his screen, but he can tell when I start and stop tansmitting. I have the K3 set to Data Mode - PSK D 31bps I am using the official Microham interface to radio leads connected to Line in / Line Out. I have set the levels admittedly using RTTY ASs I said everything works fb in RTTY. I can monitor the PSK tones using the K3 monitor facility and to me (not an PSK expert) they sound OK. I get output from the rig set at 25 watts. I can also see this on my power meter. My SWR is good. I have tried varying the audio output from my PC to the interface to the rig from high to zero, but I cannot detect any material difference in the level of tone via the monitor facility. I have listened to my output on another receiver and to me it sounds OK, but my friend insists it is not. It may be that I am grossly over modulating - I dont know. Apart from varying the input in the Line IN socket via the K3 menue, is there any other adjustment? How have others set up their K3 to send PSK. On receive, my set up works very nicely and I have received many DX stations using the filters in the K3, but I cannot TX for some reason. I tried downloading several PSK software programmes and run them independently, but still I cannot get any other station to see my signal. I have run out of ideas?Can anybody help? Tom GM4FDM __ 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] K3 - VOX 0ff
Am I missing something or did the latest regular release (3.11, et al) disable the VOX OFF alert when a key is closed in PTT mode? No big deal, but being a dummy, that was a handy litte reminder. 73, Lee (K9CM) __ 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] Difficulty with PSK
I'm not sure this is the correct forum to ask for answers, but I am using my K3 My setup consists of a PC running Hamlogger 32 V 3.17 with both MMTTY and MMVARI embedded. I have a USB Microkeyer II from microham and of course my K3 with latest software. I have been running the K3 since last June. I have been using RTTY using both Logger 32 and Win-test without any problems what-so-ever and in fact this its a great set up with the dual pass band filters in the K3. This week I tried PSK31 - nothing. I have called CQ till I am blue in the face and get no reply. I called a local ham to monitor my signals and he says there is NO signal only a pattern on his screen, but he can tell when I start and stop tansmitting. I have the K3 set to Data Mode - PSK D 31bps I am using the official Microham interface to radio leads connected to Line in / Line Out. I have set the levels admittedly using RTTY ASs I said everything works fb in RTTY. I can monitor the PSK tones using the K3 monitor facility and to me (not an PSK expert) they sound OK. I get output from the rig set at 25 watts. I can also see this on my power meter. My SWR is good. I have tried varying the audio output from my PC to the interface to the rig from high to zero, but I cannot detect any material difference in the level of tone via the monitor facility. I have listened to my output on another receiver and to me it sounds OK, but my friend insists it is not. It may be that I am grossly over modulating - I dont know. Apart from varying the input in the Line IN socket via the K3 menue, is there any other adjustment? How have others set up their K3 to send PSK. On receive, my set up works very nicely and I have received many DX stations using the filters in the K3, but I cannot TX for some reason. I tried downloading several PSK software programmes and run them independently, but still I cannot get any other station to see my signal. I have run out of ideas?Can anybody help? Tom GM4FDM __ 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] K3 and Heathkit SB-610 monitor scope
Hello group, I'm not very familiar with using monitor scopes, so please bear with me. I'm interested in picking up a used Heathkit SB-610 in order to monitor my sideband wave forms. From what I understand, all I'd need to do is connect the antenna out of the K3 to the SB-610, and the antenna input to the SB-610. Can anyone with experience with this scope know if it will work well with the K3? I think this SB-610 has a 455KHz coil installed as well. I do believe they can be switched out for a 4-6KHz coil for monitoring a receiver's final IF. I don't recall what the final IF of the K3 is operating at. 73 de James K3JPS __ 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] Difficulty with PSK
PSK-D is ONLY for direct paddle input to translate CW to PSK or using a terminal program connected to the RS232 port...such as the terminal tab on the K3 utility. If you are using a digital mode program as you are, you must use Data-A, not PSK-D. - 73, Greg - AB7R Whidbey Island WA NA-065 On Wed Apr 29 3:11 , tom wylie sent: I'm not sure this is the correct forum to ask for answers, but I am using my K3 My setup consists of a PC running Hamlogger 32 V 3.17 with both MMTTY and MMVARI embedded. I have a USB Microkeyer II from microham and of course my K3 with latest software. I have been running the K3 since last June. I have been using RTTY using both Logger 32 and Win-test without any problems what-so-ever and in fact this its a great set up with the dual pass band filters in the K3. This week I tried PSK31 - nothing. I have called CQ till I am blue in the face and get no reply. I called a local ham to monitor my signals and he says there is NO signal only a pattern on his screen, but he can tell when I start and stop tansmitting. I have the K3 set to Data Mode - PSK D 31bps I am using the official Microham interface to radio leads connected to Line in / Line Out. I have set the levels admittedly using RTTY ASs I said everything works fb in RTTY. I can monitor the PSK tones using the K3 monitor facility and to me (not an PSK expert) they sound OK. I get output from the rig set at 25 watts. I can also see this on my power meter. My SWR is good. I have tried varying the audio output from my PC to the interface to the rig from high to zero, but I cannot detect any material difference in the level of tone via the monitor facility. I have listened to my output on another receiver and to me it sounds OK, but my friend insists it is not. It may be that I am grossly over modulating - I dont know. Apart from varying the input in the Line IN socket via the K3 menue, is there any other adjustment? How have others set up their K3 to send PSK. On receive, my set up works very nicely and I have received many DX stations using the filters in the K3, but I cannot TX for some reason. I tried downloading several PSK software programmes and run them independently, but still I cannot get any other station to see my signal. I have run out of ideas?Can anybody help? Tom GM4FDM __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: 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] Difficulty with PSK
Tom, Since this question keeps coming up, perhaps the manual should be enhanced to educate users about terms such as ASCII that are commonly used for data transmission. See page 31 of the K3 manual, and you will find that PSK D is only used for ASCII and paddle input to the K3. Your application is most likely using soundcard generated tones. Therefore, you must use DATA A or (for RTTY) AFSK A. Very few applications send ASCII data for PSK operation. I believe that is your entire problem. I am not sure how you have your RTTY set up, perhaps the application is sending ASCII data over the RS-232 interface and therefore will work if the K3 is set to FSK D - you did not give those details. If your application is sending ASCII data, there is no need for the cables to the soundcard nor is there a need for any interface box with the K3. FYI, the K3 has the equivalent of a soundcard data interface box built-in, you only need two stereo cables from the K3 LINE IN/OUT jacks to the soundcard LINE OUT/IN and an RS-232 cable from the computer to the K3. Adding a separate interface box only complicates the shack and the operation. 73, Don W3FPR tom wylie wrote: ... I have the K3 set to Data Mode - PSK D 31bps I am using the official Microham interface to radio leads connected to Line in / Line Out. I have set the levels admittedly using RTTY ASs I said everything works fb in RTTY. ... __ 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] K3 and Heathkit SB-610 monitor scope
James I am not sure you will get value for money from an SB-610, they date from the days when a decent oscilloscope was big and expensive. These days 'scopes with the capabilities to monitor your peaks are general purpose test items and don't cost much. The K3 also has a two tone test oscillator built in. The IF output of the K3 is quite low level and is centred on 8.215 MHz, not the final IF of 15 KHz. For my money, I would look for a general purpose oscilloscope for the shack and an SDR receiver ranging from the low cost Softrock IF, to LP-PAN or the more expensive general coverage ones. These will give you a panoramic view of the band and be far more useful than an SB-610, even if it could be converted to work at the K3 IF output. 73 Dave, G4AON K3/100 #80, Perseus SDR http://www.astromag.co.uk/k3/ -- I'm not very familiar with using monitor scopes, so please bear with me. I'm interested in picking up a used Heathkit SB-610 in order to monitor my sideband wave forms. From what I understand, all I'd need to do is connect the antenna out of the K3 to the SB-610, and the antenna input to the SB-610. Can anyone with experience with this scope know if it will work well with the K3? I think this SB-610 has a 455KHz coil installed as well. I do believe they can be switched out for a 4-6KHz coil for monitoring a receiver's final IF. I don't recall what the final IF of the K3 is operating at. 73 de James K3JPS __ 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] K3 and Heathkit SB-610 monitor scope
The SB610 is a transmit monitor scope. It is not a bandscope. The model SB620 was a bandscope. The SB610 is still very useful for monitoring your transmit signal through an amplifier for proper modulation and trapezoidal waveforms etc. Good luck finding parts. 73, Bob W5OV ex- One of the Hams at Heath James I am not sure you will get value for money from an SB-610, they date from the days when a decent oscilloscope was big and expensive. These days 'scopes with the capabilities to monitor your peaks are general purpose test items and don't cost much. The K3 also has a two tone test oscillator built in. The IF output of the K3 is quite low level and is centred on 8.215 MHz, not the final IF of 15 KHz. For my money, I would look for a general purpose oscilloscope for the shack and an SDR receiver ranging from the low cost Softrock IF, to LP-PAN or the more expensive general coverage ones. These will give you a panoramic view of the band and be far more useful than an SB-610, even if it could be converted to work at the K3 IF output. 73 Dave, G4AON K3/100 #80, Perseus SDR http://www.astromag.co.uk/k3/ -- I'm not very familiar with using monitor scopes, so please bear with me. I'm interested in picking up a used Heathkit SB-610 in order to monitor my sideband wave forms. From what I understand, all I'd need to do is connect the antenna out of the K3 to the SB-610, and the antenna input to the SB-610. Can anyone with experience with this scope know if it will work well with the K3? I think this SB-610 has a 455KHz coil installed as well. I do believe they can be switched out for a 4-6KHz coil for monitoring a receiver's final IF. I don't recall what the final IF of the K3 is operating at. 73 de James K3JPS __ 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] K3 and Heathkit SB-610 monitor scope
The SB-610 was basically a transmit monitor scope but could also be used to monitor receiver IF's up to 6KC (at least according to the manual) but I have never used one that way. In any case the IF on the K3 is to high. Bob W6VY - Original Message - From: w...@w5ov.com To: Dave G4AON elecr...@astromag.co.uk Cc: elecraft@mailman.qth.net Sent: Wednesday, April 29, 2009 10:07 AM Subject: Re: [Elecraft] K3 and Heathkit SB-610 monitor scope The SB610 is a transmit monitor scope. It is not a bandscope. The model SB620 was a bandscope. The SB610 is still very useful for monitoring your transmit signal through an amplifier for proper modulation and trapezoidal waveforms etc. Good luck finding parts. 73, Bob W5OV ex- One of the Hams at Heath James I am not sure you will get value for money from an SB-610, they date from the days when a decent oscilloscope was big and expensive. These days 'scopes with the capabilities to monitor your peaks are general purpose test items and don't cost much. The K3 also has a two tone test oscillator built in. The IF output of the K3 is quite low level and is centred on 8.215 MHz, not the final IF of 15 KHz. For my money, I would look for a general purpose oscilloscope for the shack and an SDR receiver ranging from the low cost Softrock IF, to LP-PAN or the more expensive general coverage ones. These will give you a panoramic view of the band and be far more useful than an SB-610, even if it could be converted to work at the K3 IF output. 73 Dave, G4AON K3/100 #80, Perseus SDR http://www.astromag.co.uk/k3/ -- I'm not very familiar with using monitor scopes, so please bear with me. I'm interested in picking up a used Heathkit SB-610 in order to monitor my sideband wave forms. From what I understand, all I'd need to do is connect the antenna out of the K3 to the SB-610, and the antenna input to the SB-610. Can anyone with experience with this scope know if it will work well with the K3? I think this SB-610 has a 455KHz coil installed as well. I do believe they can be switched out for a 4-6KHz coil for monitoring a receiver's final IF. I don't recall what the final IF of the K3 is operating at. 73 de James K3JPS __ 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 No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.5.287 / Virus Database: 270.12.8/2086 - Release Date: 04/29/09 06:37:00 __ 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] K3 Noise Reduction
I tried the following AGC settings that Dave, K6LL, suggested to improve NR: DCY soft HLD 0.20 PLS nor SLP 0 THR 008 F200 S020 Using these settings I was able to eliminate most of the noise in SSB mode, but signals were sharp and inconsistantly loud as if the AGC were turned off. I was concerned about blowing out my external speaker, so I returned to my previous settings. I sincerely hope the noise reduction function will be reworked. Roy Morris W4WFB __ 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] Difficulty with PSK
This is now sorted. I am using DATA A and have had successful QSOs. I believe the manual is a little ambiguous in the description of the modes and assumes knowledge or familiarity with the products, which is a problem for somebody who just wants to try things out. The MircokeyerII is a USB interface designed to go between the rig and the computer carrying all the audio and switching. It also has a built in Winkey for CW so is indispensible. Seehttp://www.microham.com/ for details if you are interested. Thanks to all who have responded 73 de Tom GM4FDM Don Wilhelm wrote: Tom, Since this question keeps coming up, perhaps the manual should be enhanced to educate users about terms such as ASCII that are commonly used for data transmission. See page 31 of the K3 manual, and you will find that PSK D is only used for ASCII and paddle input to the K3. Your application is most likely using soundcard generated tones. Therefore, you must use DATA A or (for RTTY) AFSK A. Very few applications send ASCII data for PSK operation. I believe that is your entire problem. I am not sure how you have your RTTY set up, perhaps the application is sending ASCII data over the RS-232 interface and therefore will work if the K3 is set to FSK D - you did not give those details. If your application is sending ASCII data, there is no need for the cables to the soundcard nor is there a need for any interface box with the K3. FYI, the K3 has the equivalent of a soundcard data interface box built-in, you only need two stereo cables from the K3 LINE IN/OUT jacks to the soundcard LINE OUT/IN and an RS-232 cable from the computer to the K3. Adding a separate interface box only complicates the shack and the operation. 73, Don W3FPR tom wylie wrote: ... I have the K3 set to Data Mode - PSK D 31bps I am using the official Microham interface to radio leads connected to Line in / Line Out. I have set the levels admittedly using RTTY ASs I said everything works fb in RTTY. ... __ 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] [K3] K3 owners: please load the latest firmware (rev 3.11)
We're hoping that the latest K3 beta firmware, revision 3.11 (DSP 2.15) will go to production firmware status next week. While 3.11 doesn't have everything that everyone has asked for, it's a huge step forward from the previous production revision (2.78). INDEED! Congrats with another milestone. Thank you guys for all the maddening hard work. Hope we didn't drive you too crazy. It is most exiting to see the K3 evolve, that makes Elecraft very unique in the hamworld (and in electronics in general) Great to be on board. 73' Paul PD0PSB -- View this message in context: http://n2.nabble.com/K3-owners%3A-please-load-the-latest-firmware-%28rev-3.11%29-tp2693755p2742628.html Sent from the [K3] 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] K3 and Heathkit SB-610 monitor scope
Thank you all for your replies. I will only be using the 610 to monitor my transmit waveform in sideband and AM. I just wasn't sure how the 610 could be used to monitor receive IF. At this point, I don't think I'll bother with that function for now. Anyway, I was able to get a restored SB-610 from eBay for a fair price. As for a spectrum scope, I'm still waiting to see if Elecraft will release a stand alone unit. 73 de James K3JPS On Wed, Apr 29, 2009 at 1:41 PM, Robert Dorchuck w...@verizon.net wrote: The SB-610 was basically a transmit monitor scope but could also be used to monitor receiver IF's up to 6KC (at least according to the manual) but I have never used one that way. In any case the IF on the K3 is to high. Bob W6VY - Original Message - From: w...@w5ov.com To: Dave G4AON elecr...@astromag.co.uk Cc: elecraft@mailman.qth.net Sent: Wednesday, April 29, 2009 10:07 AM Subject: Re: [Elecraft] K3 and Heathkit SB-610 monitor scope The SB610 is a transmit monitor scope. It is not a bandscope. The model SB620 was a bandscope. The SB610 is still very useful for monitoring your transmit signal through an amplifier for proper modulation and trapezoidal waveforms etc. Good luck finding parts. 73, Bob W5OV ex- One of the Hams at Heath James I am not sure you will get value for money from an SB-610, they date from the days when a decent oscilloscope was big and expensive. These days 'scopes with the capabilities to monitor your peaks are general purpose test items and don't cost much. The K3 also has a two tone test oscillator built in. The IF output of the K3 is quite low level and is centred on 8.215 MHz, not the final IF of 15 KHz. For my money, I would look for a general purpose oscilloscope for the shack and an SDR receiver ranging from the low cost Softrock IF, to LP-PAN or the more expensive general coverage ones. These will give you a panoramic view of the band and be far more useful than an SB-610, even if it could be converted to work at the K3 IF output. 73 Dave, G4AON K3/100 #80, Perseus SDR http://www.astromag.co.uk/k3/ -- I'm not very familiar with using monitor scopes, so please bear with me. I'm interested in picking up a used Heathkit SB-610 in order to monitor my sideband wave forms. From what I understand, all I'd need to do is connect the antenna out of the K3 to the SB-610, and the antenna input to the SB-610. Can anyone with experience with this scope know if it will work well with the K3? I think this SB-610 has a 455KHz coil installed as well. I do believe they can be switched out for a 4-6KHz coil for monitoring a receiver's final IF. I don't recall what the final IF of the K3 is operating at. 73 de James K3JPS __ 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 No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.5.287 / Virus Database: 270.12.8/2086 - Release Date: 04/29/09 06:37:00 __ 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] K3 Noise Reduction
I agree with Roy Morris. No amount of tinkering with the parameters significantly improves the NR on the K3. The Kenwood 480 has dual NR's, one for CW and one for SSB. Both are much more effective than the K3's NR without causing any degradation to the signal that I can detect. Thus I use the 480 rather than the K3 under noisy conditions and/or QRN. I wonder at times if the concept is wrong; perhaps it would be better to forget about signal enhancement and concentrate on the noise reduction. 73, Lee (K9CM) __ 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] Difficulty with PSK
Tom, I did not mean to imply that you could not use an external interface box with the K3, but I did mean to state that it is not necessary since the K3 has the functions built in (except for the soundcard itself). Yes, if you need the other functions of the MicrokeyerII, then by all means use it, it is a good choice. The manual is clear provided one understands the meaning and implications of terms (or standard usage abbreviations) such as ASCII, FSK, AFSK, and other terms related to data mode operation. There are many resources in book form and on the web that can be helpful if there is a question about the meanings and common usage - The ARRL Handbook contains a good glossary of Digital Communications Terminology in the chapter dealing with Modes and Modulation Sources. As much as we would like to jump in and just try things out, technology has advanced to a point where that is often just neither wise nor practical. I believe we should have some understanding about what we are dealing with first. I like to relate it to a conversation - if both parties to a conversation do not have an understanding of the terminology used, there just cannot be a good flow of information. 73, Don W3FPR tom wylie wrote: I believe the manual is a little ambiguous in the description of the modes and assumes knowledge or familiarity with the products, which is a problem for somebody who just wants to try things out. The MircokeyerII is a USB interface designed to go between the rig and the computer carrying all the audio and switching. It also has a built in Winkey for CW so is indispensible. __ 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] K3 Noise Reduction
Is most of this discussion on NR in the K3 from users who would like to improve the SNR on louder signals for easier listening in noisy conditions? I get the impression we have people expecting different things from these controls. The optimum AGC and NR design strategy to improve SNR for weak signals might be quite a different story than for stronger signals and noise, even if the SNR's are initially the same. That might show up fairly dramatically on a rig with as large a dynamic range as the K3. Since I mostly worry about readability on really weak signals I've had a bit of a hard time understanding what this was all about. I just use settings similar to those suggested by W3FPR and K6LL and I've been very happy with the results ... which are much better than any Icom or Kenwood I ever owned. 73, Dave AB7E Lee Trout wrote: I agree with Roy Morris. No amount of tinkering with the parameters significantly improves the NR on the K3. The Kenwood 480 has dual NR's, one for CW and one for SSB. Both are much more effective than the K3's NR without causing any degradation to the signal that I can detect. Thus I use the 480 rather than the K3 under noisy conditions and/or QRN. I wonder at times if the concept is wrong; perhaps it would be better to forget about signal enhancement and concentrate on the noise reduction. 73, Lee (K9CM) __ 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] XV Transverter wish list
I know a lot of us VHF nuts would like to really see just how well our system performs..to check feed line loss and to set up the output signal level to our tranceivers. what would be nice would be to have a signal source of a known level. something like the XG2 but would cover 50, 144, 220. 432 or one for each band Ed K7WIA -- View this message in context: http://n2.nabble.com/XV-Transverter-wish-list-tp2743204p2743204.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] K3 Noise Reduction..revisited
I have two Hear-it speakers from England's BHI company hooked thru my microham controller's headphone outputwhich is connected to the 7800 the K3. With a low- mid aggressive setting they don't sound anything but quieter. (what a concept)... leave them in line most all the time. No gurgling, whooshing... or D-Star audio emulations. (Much better than the NCT licensed stuff Clearspeech/Heil now West Mountain Radio). Granted if I was using a GrandioseSweetness18 3 way, I might have a different outcome. Then again I could pipe it thru my UREI time-aligned monitors. 40 years in the audio business.tells me the BHI algorithm is a winner whatever they are doing ...I wish Lyle would do ( if the DSP can handle it ) And I do know the existing design does it the other way . Seems we revisit this one about every 118 days.. bill __ 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] K3 Noise Reduction
David, I am a mostly CW operator with only an occasional SSB contact or contests. I find that I can copy signals on my K3 that I cannot copy on my TS-850, but only a few very weak ones. The most effective control against noise that I have found is the Width control and in 160 and 80 meter very noisy contacts I find myself at 50 or 100 Hz width. I find that the signals all sound noisy unless they are very strong, above S9 which are rare in today's propagation. I can make the signal sound a bit less noisy with the NR, but at the expense of copy ability, especially with code speeds above 20 wpm. I have never found the NR to be useful for a CW contact. SSB contacts, even with a setting of F1-1 are distorted enough to be difficult to copy. For noisy SSB contacts turning off the AGC and reducing the RF Gain seems to be the effective tactic. I have been reading what people have to say on this forum and I get further confused about how to properly set up the AGC, NB and NR to make them work to my advantage. I find both of my 20 year old Kenwoods more pleasant to use (a TS-440 and TS-850) but I can work signals with the K3 that I can't work with the others. The NB is more effective with either of the Kenwoods. I still think I am doing something terribly wrong with the K3 and I need more contacts to figure it out. It seems that only 2,000 or so QSOs is not enough. I need more experience with Ham Radio, perhaps. Fifty three years does not seem enough. Willis 'Cookie' Cooke K5EWJ --- On Wed, 4/29/09, David Gilbert xda...@cis-broadband.com wrote: From: David Gilbert xda...@cis-broadband.com Subject: Re: [Elecraft] K3 Noise Reduction To: Elecraft@mailman.qth.net Date: Wednesday, April 29, 2009, 1:41 PM Is most of this discussion on NR in the K3 from users who would like to improve the SNR on louder signals for easier listening in noisy conditions? I get the impression we have people expecting different things from these controls. __ 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] K2 alignment problems
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Re: [Elecraft] K3 Noise Reduction
Hi Dave, Thanks for trying to understand. I can't speak for others, but here's my issue with NR. It's not how it works on weak signals, it's how it works on strong ones. Sometimes I have AGC SLP set to a low value (i.e. this makes weak signals sound quieter and strong signals sound louder). I usually have RF gain set to max and set AF gain to a comfortable level. I can tune around the band and hear weak and strong signals pass by, but I set my AF gain so the strongest signals are tolerably loud. Now, if I turn on NR and set it to a relatively aggressive setting and then tune around the band, suddenly the strong signals that would have been merely loud with NR off are now painfully loud with NR on. It's hearing-damage loud if I have headphones on (well, that's how it seems when you suddenly tune across a S9+20 signal.) So OK, some say, don't tune around with NR on. But the same effect makes it nearly impossible to use aggressive NR with low AGC SLP values on signals with deep QSB. With NR off, a signal that fades in and out between, say, S2 and S9+10 is easily copyable. With NR on, it goes from nearly inaudible to wake-the-neighbors loud. Yes, there are all kinds of ways to get around it. Increase the AGC SLP, ride the AF or RF gain, reduce bandwidth. All very valid work- arounds and I use them all at times. But I really can't imagine that the extra 15 to 18 dB boost that aggressive NR gives already strong signals is normal, beneficial, or intended behavior. (If it IS considered normal or intended, I wish Wayne or Lyle would speak up and I'll shut up about it. :-) My only other experience with NR was on the K2, and I loved it there (although I didn't experiment with the settings on the K2 as much as I have on the K3.) 73 -- Joe KB8AP On Apr 29, 2009, at 1:41 PM, David Gilbert wrote: Is most of this discussion on NR in the K3 from users who would like to improve the SNR on louder signals for easier listening in noisy conditions? I get the impression we have people expecting different things from these controls. The optimum AGC and NR design strategy to improve SNR for weak signals might be quite a different story than for stronger signals and noise, even if the SNR's are initially the same. That might show up fairly dramatically on a rig with as large a dynamic range as the K3. __ 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] K3 Noise Reduction
Agreed! I have tried a bunch of settings and have some that really suit my personal preference. Here's what I use on the lowest bands: PRE off ATT on AGC DCY Soft AGC HLD 0.50 AGC PLS nor AGC SLP 006 AGC THR 003 AGC--F 120 AGC--S 025 Very strong signals may give a little distortion, it could be their signal is overdriven, but I use the RF control. Noise from lighting static, and neighbors very lousy electric fence is not bothersome. Hopefully through the sharing of different settings, those who might be a bit challenged by the flexibility will be helped. I have saved these settings so I don't lose them when I diddle some more. :-) 73, Bill K9YEQ K2 #35; KX1 #35; K3 #1744; mini mods ATS-3B -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of David Gilbert Is most of this discussion on NR in the K3 from users who would like to improve the SNR on louder signals for easier listening in noisy conditions? I get the impression we have people expecting different things from these controls. The optimum AGC and NR design strategy to improve SNR for weak signals might be quite a different story than for stronger signals and noise, even if the SNR's are initially the same. That might show up fairly dramatically on a rig with as large a dynamic range as the K3. Since I mostly worry about readability on really weak signals I've had a bit of a hard time understanding what this was all about. I just use settings similar to those suggested by W3FPR and K6LL and I've been very happy with the results ... which are much better than any Icom or Kenwood I ever owned. 73, Dave AB7E Lee Trout wrote: I...No amount of tinkering with the parameters significantly improves the NR on the K3. I wonder at times if the concept is wrong; perhaps it would be better to forget about signal enhancement and concentrate on the noise reduction. 73, Lee (K9CM) __ 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] [K3] Differences in RF gain with and without AGC
In my K3 RF gain works as expected when AGC is off. Turning the knob so that S-meter shows S4 reduces the background noise dramatically. With AGC on, RF Gain needs to be turned off much stronger for the same effect (S9+40). Is this just an abnormality on my K3 or is K3 programmed this way? It seems that RF Gain with AGC on acts mainly on the front-end but retains white noise generated in the latter stages. If this is true, it would l explain why K3 sounds noisy with AGC on, but not so with AGC off and RF gain adjusted as needed. Ignacy, NO9E -- View this message in context: http://n2.nabble.com/Differences-in-RF-gain-with-and-without-AGC-tp2744303p2744303.html Sent from the [K3] 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] K3 AF line out to mic attenuation
Hello, I want to connect K3 audio line out to a Toshiba laptop which only has a 3.5 mic socket for audio in. Does anyone have recommendations for attenuation/impedance matching? I was thinking of a simple votage divider. Thanks, Chris VK2LCD __ 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] [K3] Changing volume with AGC on and off
With AGC on the volume from the speaker is very good. With AGC off, the max volume before the audio is limited is much lower. This is even with AF LIM set to 30. There is no problem with headphones since there is always enough volume. Ignacy, NO9E -- View this message in context: http://n2.nabble.com/Changing-volume-with-AGC-on-and-off-tp2744432p2744432.html Sent from the [K3] 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] K3 AF line out to mic attenuation
Chris, A simple voltage divider *may* be required, but I would suggest trying it without any attenuation first. It all depends on where the soundcard controls the microphone gain - be on the lookout for overload in the soundcard, and if present, add an attenuator. A series resistor may work just fine, or as you suggest, a voltage divider. Impedance matching is not necessary nor desirable. Audio devices operate well by using a low impedance source (able to provide more driving current than is required) and a high impedance sink (which will limit the current drawn). The characteristics of the sink (in your case, the microphone input) will determine how much current is drawn from the source (the K3). An analogy is to consider utility power wiring - the outlet receptacle provides a very low impedance source, and the device that you plug into that wall socket will determine how much current is drawn, therefore the amount of power that is transferred from the power company to your device. Within limits, an audio source/sink combination works the same way, but the actual source impedance will not be as near zero as the power company source, it will have some finite value such that if the current drawn is too large, distortion products will be developed in the driver. When the available source power is near the power to be dissipated (as in a transceiver/antenna situation), then impedance matching becomes important for maximum power transfer - because the source power is limited (or more correctly, not vastly greater than the power required by the sink). 73, Don W3FPR Chris Meagher wrote: Hello, I want to connect K3 audio line out to a Toshiba laptop which only has a 3.5 mic socket for audio in. Does anyone have recommendations for attenuation/impedance matching? I was thinking of a simple votage divider. Thanks, Chris VK2LCD __ 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 No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.5.287 / Virus Database: 270.12.8/2086 - Release Date: 04/29/09 06:37:00 __ 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] K3 AF line out to mic attenuation
Chris Watch out for the DC phantom voltage on that laptop's mic jack. I doubt if you want to feed that back to the K3. Otherwise you should be ok to just do a direct feed. Hopefully you won't have any ground loop problems. An alternative would be to use a cheap external USB sound card. Steve Ellington n...@carolina.rr.com - Original Message - From: Chris Meagher cmeag...@activ8.net.au To: elecraft@mailman.qth.net Sent: Wednesday, April 29, 2009 8:53 PM Subject: [Elecraft] K3 AF line out to mic attenuation Hello, I want to connect K3 audio line out to a Toshiba laptop which only has a 3.5 mic socket for audio in. Does anyone have recommendations for attenuation/impedance matching? I was thinking of a simple votage divider. Thanks, Chris VK2LCD __ 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] K3 AF line out to mic attenuation
Hi Chris, I connect both LINE OUT and LINE IN directly to the microphone and headphone jacks of my HP laptop without anything between. The IN and OUT gain settings of the laptop handle the levels OK. 73! Ken Kopp - K0PP elecraftcov...@rfwave.net http://tinyurl.com/7lm3m5 __ 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] K2 5233 alignment problems
I hear that a third time is a charm. This is the third time trying to post and I hope it works. I am at the alignment section of phase III and everything seems to have gone hay-wire. Phases I and II went well with only a couple of glitches that were corrected with your help. I checked and repaired a few solder joints, looked for solder bridges and correct parts in the correct locations and fired up the unit. No smoke and no overheating. I set the power out at 2 watts, unit at 7100 and hit the button to adjust L1 and L2. I had .2-.3 watts indicated but they did not fluctuate when adjusting the pots. I checked the diode and resisters that they said were easily reversed and they were all ok. Using the rf probe I had no voltage at either side of r50. Further checks of components in the transmitter section found most of the U chips had improper voltages or double voltages at the appropriate pinsl I then went back to phase I and started running checks again. All was ok until I got to the tone generator and pitch. I now had neither!. The display showed the values I had after t he construction of that phase but now they are gone. When I hit the button to turn the tone on the audio went away. I did notice a very low click when I adjusted the vfo. I also went back to check the birdy at 7000 and found it to be very weak and totally disappeared when I moved the vfo dial. It came back when I hit the edit button but very shaky. Logic dictates the problem is in the construction phase of part III. The above is a short synopsis of the checks I did but I did not take the time to give the actual values of the U pin voltages at this time. I have tried to post twice before and want to verify this message goes thru before taking the time to enter the values. This leads to two questions 1)? Where do you suggest I start from here? 2)? Is there anywhere I can get a picture of the rf board before any parts are installed. That would be great for helping me locate any solder bridges on those small pads. Thanks in advance for your help. Dan af4lb __ 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] K3 AF line out to mic attenuation
Chris, I think this is one of those your mileage may vary things. With this older HP laptop, I have a bit of overdrive going the other way - from the computer to the Line In on the K3. Adding an attenuator allowed the me to get better control (more granularity) over the laptop's audio out and at the same time lowered the drive level at the K3. You can build a Pi or T attenuator for either in or out at the computer. A fairly good calculator for this can be found at http://www.daycounter.com/Calculators/PI-T-Pad-Attenuator-Calculator.phtml FWIW, I designed and built a 5 dB attenuator for 1k line impedance. It seems to work and allowed volume adjustment to occur in smaller steps, which in this case is what was necessary to combat too much drive at lower Line In settings at the K3 (setting 4 was as high as I could use it, and setting it at 3 was too low). You can also buy a better sound device like the EMU-0202 from Creative Labs. This approach has the additional benefit of keeping digital modes' sound separate from whatever your computer o/s and applications generate. 73, matt W6NIA K3 #24 On Thu, 30 Apr 2009 10:53:38 +1000, you wrote: Hello, I want to connect K3 audio line out to a Toshiba laptop which only has a 3.5 mic socket for audio in. Does anyone have recommendations for attenuation/impedance matching? I was thinking of a simple votage divider. Thanks, Chris VK2LCD __ 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] K3 Noise Reduction
On Wed, 29 Apr 2009 15:59:35 -0400, Lee Trout trou...@gmail.com wrote: [snip I wonder at times if the concept is wrong; perhaps it would be better to forget about signal enhancement and concentrate on the noise reduction. [snip] Absolutely not! Let's let Elecraft work out the noise reduction anomalies. They're reading you posts and they will react to them. Be patient. Tom, N5GE K3 #806, K3 #1055 XV144, XV432 W1 and other small kits. http://www.n5ge.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] [K3] RE: Non Amplified D104
Jim, Thanks for the feedback. I'll try it. Greg Date: Tue, 28 Apr 2009 16:14:53 -0700 From: ml-user+39520-1102585...@n2.nabble.com To: connectme...@hotmail.com Subject: Re: Non Amplified D104 On Tue, 28 Apr 2009 16:05:22 -0700 (PDT), -.-. --.-N3TU -.-. --.- wrote: Anyone ever use the non amplified D104 mic? Not for about 35 years. :) But it should work fine with the K3. Plug it in and get some signal reports from a trained listener, then tweak the TX equalizer if it needs it. I suspect that it won't need much tweaking. 73, Jim Brown K9YC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:elecr...@... This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html This email is a reply to your post @ http://n2.nabble.com/Non-Amplified-D104-tp2737535p2737593.html You can reply by email or by visting the link above. _ Windows Live™ SkyDrive™: Get 25 GB of free online storage. http://windowslive.com/online/skydrive?ocid=TXT_TAGLM_WL_skydrive_042009 -- View this message in context: http://n2.nabble.com/Non-Amplified-D104-tp2737535p2744976.html Sent from the [K3] 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] XV Transverter wish list
On Wed, 29 Apr 2009 13:41:33 -0700 (PDT), K7WIA emoss98...@msn.com wrote: I know a lot of us VHF nuts would like to really see just how well our system performs..to check feed line loss and to set up the output signal level to our tranceivers. what would be nice would be to have a signal source of a known level. something like the XG2 but would cover 50, 144, 220. 432 or one for each band Ed K7WIA I second the motion Ed. Having a good signal source to adjust the offset would be great. Tom, N5GE K3 #806, K3 #1055 XV144, XV432 W1 and other small kits. http://www.n5ge.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] K2 5233 alignment problems
Dan, Whoa!! One thing at a time please. You apparently are having multiple problems. That is not unusual for a new build. BUT - take things one at a time, the anomalies are not likely to be related. The K2 breaks down into neat functional units. If you have trouble believing that, just look at the block diagram. Start with the first block of the block diagram and verify its proper operation. Resist the temptation to go on to other items before that functional block is verified. If you give in to that temptation, you will overwhelm and confuse those who are trying to help with extraneous information, and you will have a tendency to jump to conclusions that are not necessarily correct. Lets take the first item - the loss of sidetone. You likely have firmware level 2.04P which allows a selection of the sidetone source between U6-25 and U8-4 to support older K2s. For your K2, the source must be U8-4. Enter the menu for ST-L and edit the parameter - set the level somewhere between 25 and 40, then tap DISPLAY to toggle the sidetone source. When you hear sidetone, stop and exit the menu. You may have to perform the steps listed in the Transmit Signal Tracing section of Appendix E in the K2 manual to determine the failing stage. Stop at the first one which does not fall into the expected range - all the measurements which follow that failing point will also be incorrect, so the first failing point is the one to concentrate on until resolved. Please explain improper voltages or double voltages - especially the double voltages part. I cannot understand what you mean by 'double voltages' - your measured voltages are your measured voltages, and there should be no ambiguity in that. Please specify whether the voltages are DC measurements (made with your DMM) or RF voltages (measured with an RF Probe). 73, Don W3FPR kf4...@aol.com wrote: I hear that a third time is a charm. This is the third time trying to post and I hope it works. I am at the alignment section of phase III and everything seems to have gone hay-wire. Phases I and II went well with only a couple of glitches that were corrected with your help. I checked and repaired a few solder joints, looked for solder bridges and correct parts in the correct locations and fired up the unit. No smoke and no overheating. I set the power out at 2 watts, unit at 7100 and hit the button to adjust L1 and L2. I had .2-.3 watts indicated but they did not fluctuate when adjusting the pots. I checked the diode and resisters that they said were easily reversed and they were all ok. Using the rf probe I had no voltage at either side of r50. Further checks of components in the transmitter section found most of the U chips had improper voltages or double voltages at the appropriate pinsl I then went back to phase I and started running checks again. All was ok until I got to the tone generator and pitch. I now had neither!. The display showed the values I had after t he construction of that phase but now they are gone. When I hit the button to turn the tone on the audio went away. I did notice a very low click when I adjusted the vfo. I also went back to check the birdy at 7000 and found it to be very weak and totally disappeared when I moved the vfo dial. It came back when I hit the edit button but very shaky. Logic dictates the problem is in the construction phase of part III. The above is a short synopsis of the checks I did but I did not take the time to give the actual values of the U pin voltages at this time. I have tried to post twice before and want to verify this message goes thru before taking the time to enter the values. This leads to two questions 1)? Where do you suggest I start from here? 2)? Is there anywhere I can get a picture of the rf board before any parts are installed. That would be great for helping me locate any solder bridges on those small pads. Thanks in advance for your help. Dan af4lb __ 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] K3 Noise Reduction
Hi Joe Your take on the NR discussion is the most accurate so far and confirms exactly my perception of it. Like Cookie K5EWJ I also find the NR on some of my other rigs very usable whereas the K3 NR is definitely not. Maybe I, like Cookie, don't have enough experience having only been in the hobby since 1949! but I would prefer NR to be noise reduction not audio amplification and distortion without the need to constantly jiggle the AGC settings to save my eardrums. Before all of the other K3 devotees jump on me let me say that I love my K3 and would not part with it but it seems to me that this NR issue is being totally ignored. Terry G4POP Joe Planisky wrote: Hi Dave, Thanks for trying to understand. I can't speak for others, but here's my issue with NR. It's not how it works on weak signals, it's how it works on strong ones. Sometimes I have AGC SLP set to a low value (i.e. this makes weak signals sound quieter and strong signals sound louder). I usually have RF gain set to max and set AF gain to a comfortable level. I can tune around the band and hear weak and strong signals pass by, but I set my AF gain so the strongest signals are tolerably loud. Now, if I turn on NR and set it to a relatively aggressive setting and then tune around the band, suddenly the strong signals that would have been merely loud with NR off are now painfully loud with NR on. It's hearing-damage loud if I have headphones on (well, that's how it seems when you suddenly tune across a S9+20 signal.) So OK, some say, don't tune around with NR on. But the same effect makes it nearly impossible to use aggressive NR with low AGC SLP values on signals with deep QSB. With NR off, a signal that fades in and out between, say, S2 and S9+10 is easily copyable. With NR on, it goes from nearly inaudible to wake-the-neighbors loud. Yes, there are all kinds of ways to get around it. Increase the AGC SLP, ride the AF or RF gain, reduce bandwidth. All very valid work- arounds and I use them all at times. But I really can't imagine that the extra 15 to 18 dB boost that aggressive NR gives already strong signals is normal, beneficial, or intended behavior. (If it IS considered normal or intended, I wish Wayne or Lyle would speak up and I'll shut up about it. :-) My only other experience with NR was on the K2, and I loved it there (although I didn't experiment with the settings on the K2 as much as I have on the K3.) 73 -- Joe KB8AP -- View this message in context: http://n2.nabble.com/K3-Noise-Reduction-tp2742986p2745211.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
