Re: [Elecraft] Weird K-3 Power Behavior
Give me a break, Joe. I told you why I didn't give his call - I'm fairly sure that he reads this reflector, and he will comment if he wants to. End of subject 73, Pete N4ZR On 4/6/2024 6:00 PM, Joe Subich, W4TV wrote: No, it's not "snarky". It points out that a claim can not be verified absent supporting documentation - just like any scientific study that has not been subject to peer review is generally not given serious weight. This is particularly the case when the claim runs contrary to not only the designer's and manufacturer's recommendation but also the experience of many other experienced audio and RF engineers. Your anecdotal claim sounds very much like the test procedure is over driving the first audio stage before any gain control (too much audio drive, reduced mic/line gain setting). However, since the lone "report" can not be peer reviewed it is impossible to give it any credence. 73, ... Joe, W4TV On 4/6/2024 4:56 PM, Pete Smith N4ZR wrote: That's kinda snarky, Joe. I didn't identify him precisely because if he wants to expose himself on this reflector (of which he is a member, I believe) he should be the one to do so. I know him to be a retired professional electronic engineer with a well-equipped workbench whose analyses seemed credible to me (who is none of those hi). 73, Pete N4ZR On 4/6/2024 4:47 PM, Joe Subich, W4TV wrote: Since your repeated claims do not identify the technician or provide any documentation of the procedure and results, the claim can not be validated. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to pete.n...@gmail.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Weird K-3 Power Behavior
No, it's not "snarky". It points out that a claim can not be verified absent supporting documentation - just like any scientific study that has not been subject to peer review is generally not given serious weight. This is particularly the case when the claim runs contrary to not only the designer's and manufacturer's recommendation but also the experience of many other experienced audio and RF engineers. Your anecdotal claim sounds very much like the test procedure is over driving the first audio stage before any gain control (too much audio drive, reduced mic/line gain setting). However, since the lone "report" can not be peer reviewed it is impossible to give it any credence. 73, ... Joe, W4TV On 4/6/2024 4:56 PM, Pete Smith N4ZR wrote: That's kinda snarky, Joe. I didn't identify him precisely because if he wants to expose himself on this reflector (of which he is a member, I believe) he should be the one to do so. I know him to be a retired professional electronic engineer with a well-equipped workbench whose analyses seemed credible to me (who is none of those hi). 73, Pete N4ZR On 4/6/2024 4:47 PM, Joe Subich, W4TV wrote: Since your repeated claims do not identify the technician or provide any documentation of the procedure and results, the claim can not be validated. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Weird K-3 Power Behavior
That's kinda snarky, Joe. I didn't identify him precisely because if he wants to expose himself on this reflector (of which he is a member, I believe) he should be the one to do so. I know him to be a retired professional electronic engineer with a well-equipped workbench whose analyses seemed credible to me (who is none of those hi). 73, Pete N4ZR On 4/6/2024 4:47 PM, Joe Subich, W4TV wrote: Since your repeated claims do not identify the technician or provide any documentation of the procedure and results, the claim can not be validated. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Weird K-3 Power Behavior
On 4/6/2024 3:58 PM, Pete Smith N4ZR wrote: Yes - although there have also been some analysis done that seems to show that, in FT8, with any ALC bars visible, signals begin to widen out, and at 4 bars there is a lot of junk between signals. Just repeating what I've been told - I don't have the ability to check this myself. Given the way the K3 audio/ALP/Power system operates, the information you have been given is highly questionable. Either the test equipment was not operating correctly, the test procedure was flawed or the particular K3/K3s being tested was not operating correctly. Since your repeated claims do not identify the technician or provide any documentation of the procedure and results, the claim can not be validated. 73, ... Joe, W4TV On 4/6/2024 3:58 PM, Pete Smith N4ZR wrote: Yes - although there have also been some analysis done that seems to show that, in FT8, with any ALC bars visible, signals begin to widen out, and at 4 bars there is a lot of junk between signals. Just repeating what I've been told - I don't have the ability to check this myself. I was running FT8 just below 1 bar, and found the driving power to my amp took 7 or 8 transmit periods to get to full power each time I adjusted my power, even by a tenth of a watt. I'm now running 3 bars (third flickering) and power-up behavior is much better. 73, Pete N4ZR __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Weird K-3 Power Behavior
Bob, 5th bar flickering is no ALC, but 5th bar solid indicates ALC action. ALC starts at 5th bar solid. 73, Don W3FPR On 4/6/2024 3:41 PM, Bob McGraw wrote: Fred et al: Based on Don's information, 4 bars on solid, 5th bar flickering, 6th bar is beginning of ALC. Also I seem to recall an exchange of information with a member of the Elecraft staff that confirmed the beginning of ALC at the 6th bar. I think this is getting into a hair splitting issue. 73 Bob, K4TAX On 4/6/2024 2:03 PM, Fred Jensen wrote: Hmmm ... I thought that the ALC started AT the 5th bar and the first 4 bars were sort of a VU-meter. Hence Don's occasional advice, "4 full bars and the 5th occasionally flickering." I've been known to get things wrong in the past however. 73, Fred ["Skip"] K6DGW Sparks NV DM09dn Washoe County Bob McGraw wrote on 4/6/2024 8:50 AM: Just to be clear on the point. The correct audio level should produce 4 bars indicated on the ALC Scale. Actual ALC action does not start until after the 5th bar. Yes, after any power adjustment, the audio system does start at lower gain, quickly ramping to the desired level. This is done to prevent any potential power overshoot. After the initial transmission at the new power setting, the remainder of transmissions are at the proper power level setting. 73 Bob, K4TAX On 4/5/2024 5:50 PM, elecraft-requ...@mailman.qth.net wrote: Message: 14 Date: Thu, 4 Apr 2024 21:03:20 -0400 From: Pete Smith N4ZR To:elecraft@mailman.qth.net Subject: Re: [Elecraft] Weird K-3 Power Behavior Message-ID:<59c02b5d-1800-4a78-9d73-60461d231...@gmail.com> Content-Type: text/plain; charset=UTF-8; format=flowed I just set the audio to be sure I'm? hitting 4 bars of ALC,and the cycle of adjust K-3 power to full expected drive to the KPA-1500 is now more like CW, but the question remains -? after I adjust the power a tiny fraction in either direction, why does the K-3's output power drop way back and relatively slowly recover? 73, Pete N4ZR <http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient> Virus-free.www.avg.com <http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient> <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2> __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Weird K-3 Power Behavior
Yes - although there have also been some analysis done that seems to show that, in FT8, with any ALC bars visible, signals begin to widen out, and at 4 bars there is a lot of junk between signals. Just repeating what I've been told - I don't have the ability to check this myself. I was running FT8 just below 1 bar, and found the driving power to my amp took 7 or 8 transmit periods to get to full power each time I adjusted my power, even by a tenth of a watt. I'm now running 3 bars (third flickering) and power-up behavior is much better. 73, Pete N4ZR On 4/6/2024 3:33 PM, W3FPR wrote: According to the DSP software engineer (Lyle Johnson) ALC begins at the 5th bar, and with the 5th bsr flickering shows no ALC action - 5th on solid, it does show some ALC. To keep the audio drive for digital modes correct set so the 5th bar just flickers. Less than that the audio drive will ramp up and produce "power hunting" at the output. More than that, you will go into distortion (ALC Compression) which will not produce the cleanest signal. The Fred Cady books also agree on that. 73, Don W3FPR On 4/6/2024 3:03 PM, Fred Jensen wrote: Hmmm ... I thought that the ALC started AT the 5th bar and the first 4 bars were sort of a VU-meter. Hence Don's occasional advice, "4 full bars and the 5th occasionally flickering." I've been known to get things wrong in the past however. 73, Fred ["Skip"] K6DGW Sparks NV DM09dn Washoe County Bob McGraw wrote on 4/6/2024 8:50 AM: Just to be clear on the point. The correct audio level should produce 4 bars indicated on the ALC Scale. Actual ALC action does not start until after the 5th bar. Yes, after any power adjustment, the audio system does start at lower gain, quickly ramping to the desired level. This is done to prevent any potential power overshoot. After the initial transmission at the new power setting, the remainder of transmissions are at the proper power level setting. 73 Bob, K4TAX On 4/5/2024 5:50 PM, elecraft-requ...@mailman.qth.net wrote: Message: 14 Date: Thu, 4 Apr 2024 21:03:20 -0400 From: Pete Smith N4ZR To:elecraft@mailman.qth.net Subject: Re: [Elecraft] Weird K-3 Power Behavior Message-ID:<59c02b5d-1800-4a78-9d73-60461d231...@gmail.com> Content-Type: text/plain; charset=UTF-8; format=flowed I just set the audio to be sure I'm? hitting 4 bars of ALC,and the cycle of adjust K-3 power to full expected drive to the KPA-1500 is now more like CW, but the question remains -? after I adjust the power a tiny fraction in either direction, why does the K-3's output power drop way back and relatively slowly recover? 73, Pete N4ZR __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to pete.n...@gmail.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Weird K-3 Power Behavior
Fred et al: Based on Don's information, 4 bars on solid, 5th bar flickering, 6th bar is beginning of ALC. Also I seem to recall an exchange of information with a member of the Elecraft staff that confirmed the beginning of ALC at the 6th bar. I think this is getting into a hair splitting issue. 73 Bob, K4TAX On 4/6/2024 2:03 PM, Fred Jensen wrote: Hmmm ... I thought that the ALC started AT the 5th bar and the first 4 bars were sort of a VU-meter. Hence Don's occasional advice, "4 full bars and the 5th occasionally flickering." I've been known to get things wrong in the past however. 73, Fred ["Skip"] K6DGW Sparks NV DM09dn Washoe County Bob McGraw wrote on 4/6/2024 8:50 AM: Just to be clear on the point. The correct audio level should produce 4 bars indicated on the ALC Scale. Actual ALC action does not start until after the 5th bar. Yes, after any power adjustment, the audio system does start at lower gain, quickly ramping to the desired level. This is done to prevent any potential power overshoot. After the initial transmission at the new power setting, the remainder of transmissions are at the proper power level setting. 73 Bob, K4TAX On 4/5/2024 5:50 PM, elecraft-requ...@mailman.qth.net wrote: Message: 14 Date: Thu, 4 Apr 2024 21:03:20 -0400 From: Pete Smith N4ZR To:elecraft@mailman.qth.net Subject: Re: [Elecraft] Weird K-3 Power Behavior Message-ID:<59c02b5d-1800-4a78-9d73-60461d231...@gmail.com> Content-Type: text/plain; charset=UTF-8; format=flowed I just set the audio to be sure I'm? hitting 4 bars of ALC,and the cycle of adjust K-3 power to full expected drive to the KPA-1500 is now more like CW, but the question remains -? after I adjust the power a tiny fraction in either direction, why does the K-3's output power drop way back and relatively slowly recover? 73, Pete N4ZR <http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient> Virus-free.www.avg.com <http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient> <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2> -- "You only grow old when you run out of new things to do" __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Weird K-3 Power Behavior
According to the DSP software engineer (Lyle Johnson) ALC begins at the 5th bar, and with the 5th bsr flickering shows no ALC action - 5th on solid, it does show some ALC. To keep the audio drive for digital modes correct set so the 5th bar just flickers. Less than that the audio drive will ramp up and produce "power hunting" at the output. More than that, you will go into distortion (ALC Compression) which will not produce the cleanest signal. The Fred Cady books also agree on that. 73, Don W3FPR On 4/6/2024 3:03 PM, Fred Jensen wrote: Hmmm ... I thought that the ALC started AT the 5th bar and the first 4 bars were sort of a VU-meter. Hence Don's occasional advice, "4 full bars and the 5th occasionally flickering." I've been known to get things wrong in the past however. 73, Fred ["Skip"] K6DGW Sparks NV DM09dn Washoe County Bob McGraw wrote on 4/6/2024 8:50 AM: Just to be clear on the point. The correct audio level should produce 4 bars indicated on the ALC Scale. Actual ALC action does not start until after the 5th bar. Yes, after any power adjustment, the audio system does start at lower gain, quickly ramping to the desired level. This is done to prevent any potential power overshoot. After the initial transmission at the new power setting, the remainder of transmissions are at the proper power level setting. 73 Bob, K4TAX On 4/5/2024 5:50 PM, elecraft-requ...@mailman.qth.net wrote: Message: 14 Date: Thu, 4 Apr 2024 21:03:20 -0400 From: Pete Smith N4ZR To:elecraft@mailman.qth.net Subject: Re: [Elecraft] Weird K-3 Power Behavior Message-ID:<59c02b5d-1800-4a78-9d73-60461d231...@gmail.com> Content-Type: text/plain; charset=UTF-8; format=flowed I just set the audio to be sure I'm? hitting 4 bars of ALC,and the cycle of adjust K-3 power to full expected drive to the KPA-1500 is now more like CW, but the question remains -? after I adjust the power a tiny fraction in either direction, why does the K-3's output power drop way back and relatively slowly recover? 73, Pete N4ZR __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Weird K-3 Power Behavior
Correct. 73, Rick nk7i On 4/6/2024 12:03 PM, Fred Jensen wrote: Hmmm ... I thought that the ALC started AT the 5th bar and the first 4 bars were sort of a VU-meter. Hence Don's occasional advice, "4 full bars and the 5th occasionally flickering." I've been known to get things wrong in the past however. 73, Fred ["Skip"] K6DGW Sparks NV DM09dn Washoe County __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Weird K-3 Power Behavior
Hmmm ... I thought that the ALC started AT the 5th bar and the first 4 bars were sort of a VU-meter. Hence Don's occasional advice, "4 full bars and the 5th occasionally flickering." I've been known to get things wrong in the past however. 73, Fred ["Skip"] K6DGW Sparks NV DM09dn Washoe County Bob McGraw wrote on 4/6/2024 8:50 AM: Just to be clear on the point. The correct audio level should produce 4 bars indicated on the ALC Scale. Actual ALC action does not start until after the 5th bar. Yes, after any power adjustment, the audio system does start at lower gain, quickly ramping to the desired level. This is done to prevent any potential power overshoot. After the initial transmission at the new power setting, the remainder of transmissions are at the proper power level setting. 73 Bob, K4TAX On 4/5/2024 5:50 PM, elecraft-requ...@mailman.qth.net wrote: Message: 14 Date: Thu, 4 Apr 2024 21:03:20 -0400 From: Pete Smith N4ZR To:elecraft@mailman.qth.net Subject: Re: [Elecraft] Weird K-3 Power Behavior Message-ID:<59c02b5d-1800-4a78-9d73-60461d231...@gmail.com> Content-Type: text/plain; charset=UTF-8; format=flowed I just set the audio to be sure I'm? hitting 4 bars of ALC,and the cycle of adjust K-3 power to full expected drive to the KPA-1500 is now more like CW, but the question remains -? after I adjust the power a tiny fraction in either direction, why does the K-3's output power drop way back and relatively slowly recover? 73, Pete N4ZR -- This email has been checked for viruses by AVG antivirus software. www.avg.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] Weird K-3 Power Behavior
Just to be clear on the point. The correct audio level should produce 4 bars indicated on the ALC Scale. Actual ALC action does not start until after the 5th bar. Yes, after any power adjustment, the audio system does start at lower gain, quickly ramping to the desired level. This is done to prevent any potential power overshoot. After the initial transmission at the new power setting, the remainder of transmissions are at the proper power level setting. 73 Bob, K4TAX On 4/5/2024 5:50 PM, elecraft-requ...@mailman.qth.net wrote: Message: 14 Date: Thu, 4 Apr 2024 21:03:20 -0400 From: Pete Smith N4ZR To:elecraft@mailman.qth.net Subject: Re: [Elecraft] Weird K-3 Power Behavior Message-ID:<59c02b5d-1800-4a78-9d73-60461d231...@gmail.com> Content-Type: text/plain; charset=UTF-8; format=flowed I just set the audio to be sure I'm? hitting 4 bars of ALC,and the cycle of adjust K-3 power to full expected drive to the KPA-1500 is now more like CW, but the question remains -? after I adjust the power a tiny fraction in either direction, why does the K-3's output power drop way back and relatively slowly recover? 73, Pete N4ZR -- "You only grow old when you run out of new things to do" __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Weird K-3 Power Behavior
It is to prevent overshoot. It will do it when you change bands also. I'm sure Wayne has explained it in detail if you can search the archives here or on the groups.io forum. If it is real bad on CW and FM, then run the TX gain cal. Keith WE6R K3/K4 Tech __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Weird K-3 Power Behavior
Run the power calibration. 73, ... Joe, W4TV On 4/4/2024 9:03 PM, Pete Smith N4ZR wrote: I just set the audio to be sure I'm hitting 4 bars of ALC,and the cycle of adjust K-3 power to full expected drive to the KPA-1500 is now more like CW, but the question remains - after I adjust the power a tiny fraction in either direction, why does the K-3's output power drop way back and relatively slowly recover? 73, Pete N4ZR On 4/4/2024 7:41 PM, Joe Subich, W4TV wrote: This is typical for those who insist on not running data modes with 4-5 bars of ALC. You are not providing enough audio and the K3/K3s needs to engage the expander (additional audio gain) in order to achieve enough drive to reach the set power level. 73, ... Joe, W4TV On 4/4/2024 6:21 PM, Pete Smith N4ZR wrote: I have a K-3 driving a KPA-1500, and have started seeing some strange behavior. After I adjust the power level control on the K-3,. even a little (like 33 to 31 watts), the driving power delivered to the KPA-1500 starts much below the K-3's indication, and only gradually increases to what would be expected at the K-3's power setting. This behavior is apparent in CW, but is more dramatic in FT* using TXData, where it can take several 12-second transmit intervals to reach full power. Touch the K-3's power control even a little, and this cycle starts over again at reduced power, gradually returning to full. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Weird K-3 Power Behavior
I just set the audio to be sure I'm hitting 4 bars of ALC,and the cycle of adjust K-3 power to full expected drive to the KPA-1500 is now more like CW, but the question remains - after I adjust the power a tiny fraction in either direction, why does the K-3's output power drop way back and relatively slowly recover? 73, Pete N4ZR On 4/4/2024 7:41 PM, Joe Subich, W4TV wrote: This is typical for those who insist on not running data modes with 4-5 bars of ALC. You are not providing enough audio and the K3/K3s needs to engage the expander (additional audio gain) in order to achieve enough drive to reach the set power level. 73, ... Joe, W4TV On 4/4/2024 6:21 PM, Pete Smith N4ZR wrote: I have a K-3 driving a KPA-1500, and have started seeing some strange behavior. After I adjust the power level control on the K-3,. even a little (like 33 to 31 watts), the driving power delivered to the KPA-1500 starts much below the K-3's indication, and only gradually increases to what would be expected at the K-3's power setting. This behavior is apparent in CW, but is more dramatic in FT* using TXData, where it can take several 12-second transmit intervals to reach full power. Touch the K-3's power control even a little, and this cycle starts over again at reduced power, gradually returning to full. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to pete.n...@gmail.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Weird K-3 Power Behavior
This is typical for those who insist on not running data modes with 4-5 bars of ALC. You are not providing enough audio and the K3/K3s needs to engage the expander (additional audio gain) in order to achieve enough drive to reach the set power level. 73, ... Joe, W4TV On 4/4/2024 6:21 PM, Pete Smith N4ZR wrote: I have a K-3 driving a KPA-1500, and have started seeing some strange behavior. After I adjust the power level control on the K-3,. even a little (like 33 to 31 watts), the driving power delivered to the KPA-1500 starts much below the K-3's indication, and only gradually increases to what would be expected at the K-3's power setting. This behavior is apparent in CW, but is more dramatic in FT* using TXData, where it can take several 12-second transmit intervals to reach full power. Touch the K-3's power control even a little, and this cycle starts over again at reduced power, gradually returning to full. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] Weird K-3 Power Behavior
I have a K-3 driving a KPA-1500, and have started seeing some strange behavior. After I adjust the power level control on the K-3,. even a little (like 33 to 31 watts), the driving power delivered to the KPA-1500 starts much below the K-3's indication, and only gradually increases to what would be expected at the K-3's power setting. This behavior is apparent in CW, but is more dramatic in FT* using TXData, where it can take several 12-second transmit intervals to reach full power. Touch the K-3's power control even a little, and this cycle starts over again at reduced power, gradually returning to full. -- 73, Pete N4ZR __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
