Transmit Audio
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Please tell me more about the ability to monitor transmit audio on the P3. Thank you.
K6CG ______________________________________________________________ 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 |
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If the RS-232 cable is not installed between the P3 and K3 the P3 will not "mute" during transmit and one can see the transmit IF. Note - this is *not* a transmit RF display as it does not show the effects of the final mixer, driver and/or final so any IMD/clipping generated in the final amplifier is not reflected in the display. 73, ... Joe, W4TV On 12/7/2011 11:39 AM, Richard Thorpe wrote: > Please tell me more about the ability to monitor transmit audio on the P3. Thank you. > > K6CG > ______________________________________________________________ > 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 > 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 |
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It's also a result of internal leakage paths so I am not sure that it can even be trusted to be representative of the signal delivered to the output stages of the transmitter.
AB2TC - Knut
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It's useful for checking your transmit equalization with a specific
voice and microphone. At N1AL, I discovered that I had way too much bass so I adjusted the K3's TX equalizer to make it flatter. As Joe says, it does not include the effects of amplifier distortion. And as Knut says, the signal level depends on random leakage through the mixer and PIN diodes, so it varies with band, drive level settings, and sample-to-sample variation of the particular K3. There's no guarantee that there will be enough signal available to be useful. That's the main reason I resist making it an "official" feature. Alan N1AL On Wed, 2011-12-07 at 09:36 -0800, ab2tc wrote: > It's also a result of internal leakage paths so I am not sure that it can > even be trusted to be representative of the signal delivered to the output > stages of the transmitter. > > AB2TC - Knut > > > Joe Subich, W4TV-4 wrote > > > > If the RS-232 cable is not installed between the P3 and K3 the P3 > > will not "mute" during transmit and one can see the transmit IF. > > > > Note - this is *not* a transmit RF display as it does not show the > > effects of the final mixer, driver and/or final so any IMD/clipping > > generated in the final amplifier is not reflected in the display. > > > > 73, > > > > ... Joe, W4TV > > > > <snip> > > > > > -- > View this message in context: http://elecraft.365791.n2.nabble.com/Transmit-Audio-tp7071119p7071354.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:[hidden email] > > 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:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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Alan,
When it does become a usable function of the P3 I am sure you will see a spike in sales volume. Till then I can get along without it. Gary VK4FD - Motorhome Mobile Elecraft Equipment K3 #679, KPA-500 #018 Living the dream!!! ----- Original Message ----- From: Alan Bloom To: ab2tc Cc: [hidden email] Sent: Thursday, December 08, 2011 4:45 AM Subject: Re: [Elecraft] Transmit Audio It's useful for checking your transmit equalization with a specific voice and microphone. At N1AL, I discovered that I had way too much bass so I adjusted the K3's TX equalizer to make it flatter. As Joe says, it does not include the effects of amplifier distortion. And as Knut says, the signal level depends on random leakage through the mixer and PIN diodes, so it varies with band, drive level settings, and sample-to-sample variation of the particular K3. There's no guarantee that there will be enough signal available to be useful. That's the main reason I resist making it an "official" feature. Alan N1AL On Wed, 2011-12-07 at 09:36 -0800, ab2tc wrote: > It's also a result of internal leakage paths so I am not sure that it can > even be trusted to be representative of the signal delivered to the output > stages of the transmitter. > > AB2TC - Knut > > > Joe Subich, W4TV-4 wrote > > > > If the RS-232 cable is not installed between the P3 and K3 the P3 > > will not "mute" during transmit and one can see the transmit IF. > > > > Note - this is *not* a transmit RF display as it does not show the > > effects of the final mixer, driver and/or final so any IMD/clipping > > generated in the final amplifier is not reflected in the display. > > > > 73, > > > > ... Joe, W4TV > > > > <snip> > > > > > -- > View this message in context: http://elecraft.365791.n2.nabble.com/Transmit-Audio-tp7071119p7071354.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:[hidden email] > > 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:[hidden email] 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:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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