I'm stuck trying to understand why I can't get any ALC bars when I'm using
fldigi. I can connect headphones to the line that normally goes into the MIC connector and can vary the volume from complete silence to very loud so I know a signal is making it to the MIC jack. If I plug my MH3 microphone into the MIC jack and speak, I see the bars vary depending on how loud I talk. A question - when fldigi puts the KX3 into transmit and send data, should the RF scale disappear and be replaced by the ALC scale? Sometimes (like right now) I don't see the ALC scale BUT I see bars above the RF scale that I can vary using the MIC knob. What causes the ALC scale to show up? By the way, my KX3 is connected to a KXPA100 which the manual indicates has an ALC adjustment screw. Is the KXPA100 controlling some of this? Mike, KE0KAC -- Sent from: http://elecraft.365791.n2.nabble.com/ ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
Mike - are you using Data-A mode? When I put my K3 into Data-A mode, the RF scale becomes the ALC scale.
Jim Bennett / W6JHB Folsom, CA > On Apr 5, 2020, at 7:11 PM, KE0KAC <[hidden email]> wrote: > > I'm stuck trying to understand why I can't get any ALC bars when I'm using > fldigi. I can connect headphones to the line that normally goes into the > MIC connector and can vary the volume from complete silence to very loud so > I know a signal is making it to the MIC jack. If I plug my MH3 microphone > into the MIC jack and speak, I see the bars vary depending on how loud I > talk. > > A question - when fldigi puts the KX3 into transmit and send data, should > the RF scale disappear and be replaced by the ALC scale? Sometimes (like > right now) I don't see the ALC scale BUT I see bars above the RF scale that > I can vary using the MIC knob. What causes the ALC scale to show up? > > By the way, my KX3 is connected to a KXPA100 which the manual indicates has > an ALC adjustment screw. Is the KXPA100 controlling some of this? > > Mike, KE0KAC > > > > -- > Sent from: http://elecraft.365791.n2.nabble.com/ > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [hidden email] Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
In reply to this post by KE0KAC
Both the KX3 and KX2 have over voltage protection on the mic input. If the input is too high mic input will be clamped to zero. When adjusting the audio level, start with the mic/line gain all the way down and increase it slowly. You should see the ALC increase. Stop when it reaches 4 bars with the 5th flickering.
Since I don't do much data mode with my KX2 this feature bites me once in a while. :-) HTH & 73, Brian, K0DTJ > On Apr 5, 2020, at 19:11, KE0KAC <[hidden email]> wrote: > > I'm stuck trying to understand why I can't get any ALC bars when I'm using > fldigi. I can connect headphones to the line that normally goes into the > MIC connector and can vary the volume from complete silence to very loud so > I know a signal is making it to the MIC jack. If I plug my MH3 microphone > into the MIC jack and speak, I see the bars vary depending on how loud I > talk. > > A question - when fldigi puts the KX3 into transmit and send data, should > the RF scale disappear and be replaced by the ALC scale? Sometimes (like > right now) I don't see the ALC scale BUT I see bars above the RF scale that > I can vary using the MIC knob. What causes the ALC scale to show up? > > By the way, my KX3 is connected to a KXPA100 which the manual indicates has > an ALC adjustment screw. Is the KXPA100 controlling some of this? > > Mike, KE0KAC > > > > -- > Sent from: http://elecraft.365791.n2.nabble.com/ > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [hidden email] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
In reply to this post by KE0KAC
Mike,
Don't go to extremes - set all the audio levels in the system to mid-range and try again. Go to my webpage www.w3fpr.com and scroll the left column to the last article. Click to open the document. While not KX3 specific, it does apply to all Elecraft gear. 73, Don W3FPR On 4/5/2020 10:11 PM, KE0KAC wrote: > I'm stuck trying to understand why I can't get any ALC bars when I'm using > fldigi. I can connect headphones to the line that normally goes into the > MIC connector and can vary the volume from complete silence to very loud so > I know a signal is making it to the MIC jack. If I plug my MH3 microphone > into the MIC jack and speak, I see the bars vary depending on how loud I > talk. > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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