Re: [Elecraft] . K3 dvr playback distortion
A couple of weeks ago on an 80m EU dx net that I regularly participate in I recorded about 10 seconds of audio from a ZL who the net was working just to give him an idea of how well his nice clean signal was being received here in the UK. He was happy with the playback and a number of UK participants in the net said without being asked that they could hardly distinguish between the recording and the real thing. It's not the first time I've done that sort of thing with similar results. In my view there's not much that needs fixing with the DVR. 73 to all Geoff G3UCK -Original Message- From: Mike Rodgers Sent: Wednesday, February 22, 2012 10:11 PM If you mean using the k3 dvr to record someone and play it back to them, that's a old problem Elecraft said they would address a year or so ago!!! There needs to be a way to adjust the level and there is not at present. __ 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 dvr playback distortion
Geoff and all, Currently, there is no way to bypass the equalization for the DVR. When you record someone's off-the-air signal, it passes through your RX EQ settings, and then when you play it back, it goes through your TX EQ settings - so the audio gets hit with the double whammy of both RX EQ and TX EQ in a situation where you do not want any equalization at all. If your EQ settings are all flat, then you can obtain and playback something that represents what you heard, but if you have either the RX or TX EQ settings adjusted for your ears, speaker, headphones, microphone, etc. Then the individual whom you recorded will not be able to hear an honest assessment of how he sounded when you play it back over the air. So yes, any fix will not be applied to the DVR, rather what is needed is the ability to turn off EQ when recording or transmitting previously recorded audio. One would normally want to have the audio pass through TX EQ if it was recorded locally, but playback of recordings made off the air is different and needs EQ turned off. 73, Don W3FPR On 2/23/2012 7:55 AM, Geoffrey Downs wrote: A couple of weeks ago on an 80m EU dx net that I regularly participate in I recorded about 10 seconds of audio from a ZL who the net was working just to give him an idea of how well his nice clean signal was being received here in the UK. He was happy with the playback and a number of UK participants in the net said without being asked that they could hardly distinguish between the recording and the real thing. It's not the first time I've done that sort of thing with similar results. In my view there's not much that needs fixing with the DVR. __ 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 dvr playback distortion
Of course you're right Don. More than three years ago I was amongst the first to install a KDVR3 and Lyle too explained the signal paths clearly at the time. I'm simply reporting my experience to try to put things into perspective: when I record a station over the air and play it back over the air, it usually provokes comments from listeners about how well the DVR reproduces the original. This is despite my RX and TX EQ settings (the former minimal, the latter not). Naturally it isn't *exactly* the same as the original but somehow listeners seem to think it gets very near. Certainly no-one has ever reported to me distortion that was not on the original. I know of no other rig on the market that does it better - in fact most cannot do it all. 73 to all, Geoff G3UCK -Original Message- From: Don Wilhelm Sent: Thursday, February 23, 2012 2:52 PM Geoff and all, Currently, there is no way to bypass the equalization for the DVR. When you record someone's off-the-air signal, it passes through your RX EQ settings, and then when you play it back, it goes through your TX EQ settings - so the audio gets hit with the double whammy of both RX EQ and TX EQ in a situation where you do not want any equalization at all. __ 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 dvr playback distortion
If you mean using the k3 dvr to record someone and play it back to them, that's a old problem Elecraft said they would address a year or so ago!!! There needs to be a way to adjust the level and there is not at present. Recently got feedback from John, ON4UN (also has K3) that his audio playback from my K3 DVR was horrible. He played my recording of him back to me and in fact it was pretty bad. Signals were solid. I have heard a few other such reports about my K3 DVR playback. I cannot currently remove the transmit equalizer (works great as set with my voice and Heil 781) for each playback. ON4UN suggested using ESSB and setting up no transmit equalization and to switch back and forth. A couple questions emerge from this:(1)Is there a way to bypass the compression (mine is set at 10) and equalization with current setup during DVR playback until a firmware change is made on this issue? (2)Could I have a correctable situation that a currently available adjustment might improve or solve? (I do not think it is possible to adjust DVR record* or* playback levels and ALC levels appear high on playback) Any similar experiences or advise? 73 Mike R Sent from my spy ring Amateur/Ham Radio KE5GBC HF Echolink mobile __ 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 dvr playback distortion
Hi, I have heard ON4UN on a number of occations fairly recently and found that his audio *is* relatively bad. I suspect that he has an RF feedback problem. Can anybody else confirm this? I have been very surprised that nobody has mentioned this to him on the air, so I have held my tongue on the issue so far. Anyway, in my opinion it's not fair to play back recordings of people's audio over the air. It's much better to record his audio with something that can be captured to a file and send that file to him. Audio deterioriates very rapidly from multiple passes through SSB receivers/transmitters. I have heard many times people proudly playing back recordings and they sound nothing like the original. AB2TC - Knut Mike Rodgers wrote If you mean using the k3 dvr to record someone and play it back to them, that's a old problem Elecraft said they would address a year or so ago!!! There needs to be a way to adjust the level and there is not at present. Recently got feedback from John, ON4UN (also has K3) that his audio playback from my K3 DVR was horrible. He played my recording of him back to me and in fact it was pretty bad. Signals were solid. I have heard a few other such reports about my K3 DVR playback. I cannot currently remove the transmit equalizer (works great as set with my voice and Heil 781) for each playback. ON4UN suggested using ESSB and setting up no transmit equalization and to switch back and forth. A couple questions emerge from this:(1)Is there a way to bypass the compression (mine is set at 10) and equalization with current setup during DVR playback until a firmware change is made on this issue? (2)Could I have a correctable situation that a currently available adjustment might improve or solve? (I do not think it is possible to adjust DVR record* or* playback levels and ALC levels appear high on playback) Any similar experiences or advise? 73 Mike R snip -- View this message in context: http://elecraft.365791.n2.nabble.com/Re-K3-dvr-playback-distortion-tp7310023p7310320.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 dvr playback distortion
Spoke with John yesterday and his signal was clean and strong. Certainly didn't hear any symptom of rf or a/c hum. Why not drop him an email? On Feb 22, 2012, at 6:07 PM, ab2tc ab...@arrl.net wrote: Hi, I have heard ON4UN on a number of occations fairly recently and found that his audio *is* relatively bad. I suspect that he has an RF feedback problem. Can anybody else confirm this? I have been very surprised that nobody has mentioned this to him on the air, so I have held my tongue on the issue so far. Anyway, in my opinion it's not fair to play back recordings of people's audio over the air. It's much better to record his audio with something that can be captured to a file and send that file to him. Audio deterioriates very rapidly from multiple passes through SSB receivers/transmitters. I have heard many times people proudly playing back recordings and they sound nothing like the original. AB2TC - Knut Mike Rodgers wrote If you mean using the k3 dvr to record someone and play it back to them, that's a old problem Elecraft said they would address a year or so ago!!! There needs to be a way to adjust the level and there is not at present. Recently got feedback from John, ON4UN (also has K3) that his audio playback from my K3 DVR was horrible. He played my recording of him back to me and in fact it was pretty bad. Signals were solid. I have heard a few other such reports about my K3 DVR playback. I cannot currently remove the transmit equalizer (works great as set with my voice and Heil 781) for each playback. ON4UN suggested using ESSB and setting up no transmit equalization and to switch back and forth. A couple questions emerge from this:(1)Is there a way to bypass the compression (mine is set at 10) and equalization with current setup during DVR playback until a firmware change is made on this issue? (2)Could I have a correctable situation that a currently available adjustment might improve or solve? (I do not think it is possible to adjust DVR record* or* playback levels and ALC levels appear high on playback) Any similar experiences or advise? 73 Mike R snip -- View this message in context: http://elecraft.365791.n2.nabble.com/Re-K3-dvr-playback-distortion-tp7310023p7310320.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 __ 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
