Re: [Elecraft] K4D #150
The background noise among other issues is why I switched to cardioid mic from Heil. Directional, excellent sound reproduction. Bill K9YEQ -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of Tim Tucker Sent: Thursday, June 24, 2021 1:36 PM To: Elecraft Reflector Subject: Re: [Elecraft] K4D #150 I use a Heil GM5 mic, with the gain and compression adjusted so my lips have to be almost touching the windscreen to drive the rig. When a fan blower from a big amp is going right underneath the rig, there is a limit to gain and compression adjustments that can be made to get rid of that much background noise. Plus a room with hard floors makes the problem worse (although I do have throw rug down). This is the type of environment where downward expansion shines. Phase Inversion: Perhaps I wasn't clear: For some reason with my setup, this Heil GM5 mic produces negative deflection on a power meter when using AM. Example: you set the AM carrier at 25 watts, expecting modulation to 100 watts, but instead you observe 25 watts deflecting to 15 watts. I don't know why that occurs, but I do know that flipping the Invert phase switch solves the problem. Tim On Thu, Jun 24, 2021 at 11:13 AM Jim Brown wrote: > On 6/24/2021 6:48 AM, Tim Tucker wrote: > > Downward Expander is the most valuable, > > That can reduce room noise you transmit in a noisy shack, especially > if you've set compression too high, or work too far from your mic. > Using a boom mic headset like the Yamaha CM500, that puts the mic a > couple of inches from the mouth does a lot to minimize the need for that. > > phase inversion > > Correctly called "polarity," this does NOTHING to improve (on the > iPlus) on > > AM (when needed), and I've found that the compressor just works > > better > (at > > least on the K3). > > I could believe that. > > There are other minor interesting features, but the > > reader can do their own feature comparison > > With the possible exception of better compression, everything else is > a way to extract money from those who don't understand audio. > > 73, Jim K9YC > EE, Fellow of the Audio Engineering Society > > __ > 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 > ae...@worldwidedx.com > -- Owner, worldwidedx.com AE6LX, Amateur Radio __ 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 k9...@live.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] K4D #150
I use a Heil GM5 mic, with the gain and compression adjusted so my lips have to be almost touching the windscreen to drive the rig. When a fan blower from a big amp is going right underneath the rig, there is a limit to gain and compression adjustments that can be made to get rid of that much background noise. Plus a room with hard floors makes the problem worse (although I do have throw rug down). This is the type of environment where downward expansion shines. Phase Inversion: Perhaps I wasn't clear: For some reason with my setup, this Heil GM5 mic produces negative deflection on a power meter when using AM. Example: you set the AM carrier at 25 watts, expecting modulation to 100 watts, but instead you observe 25 watts deflecting to 15 watts. I don't know why that occurs, but I do know that flipping the Invert phase switch solves the problem. Tim On Thu, Jun 24, 2021 at 11:13 AM Jim Brown wrote: > On 6/24/2021 6:48 AM, Tim Tucker wrote: > > Downward Expander is the most valuable, > > That can reduce room noise you transmit in a noisy shack, especially if > you've set compression too high, or work too far from your mic. Using a > boom mic headset like the Yamaha CM500, that puts the mic a couple of > inches from the mouth does a lot to minimize the need for that. > > phase inversion > > Correctly called "polarity," this does NOTHING to improve > (on the iPlus) on > > AM (when needed), and I've found that the compressor just works better > (at > > least on the K3). > > I could believe that. > > There are other minor interesting features, but the > > reader can do their own feature comparison > > With the possible exception of better compression, everything else is a > way to extract money from those who don't understand audio. > > 73, Jim K9YC > EE, Fellow of the Audio Engineering Society > > __ > 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 ae...@worldwidedx.com > -- Owner, worldwidedx.com AE6LX, Amateur Radio __ 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] K4D #150
On 6/24/2021 6:48 AM, Tim Tucker wrote: Downward Expander is the most valuable, That can reduce room noise you transmit in a noisy shack, especially if you've set compression too high, or work too far from your mic. Using a boom mic headset like the Yamaha CM500, that puts the mic a couple of inches from the mouth does a lot to minimize the need for that. phase inversion Correctly called "polarity," this does NOTHING to improve (on the iPlus) on AM (when needed), and I've found that the compressor just works better (at least on the K3). I could believe that. There are other minor interesting features, but the reader can do their own feature comparison With the possible exception of better compression, everything else is a way to extract money from those who don't understand audio. 73, Jim K9YC EE, Fellow of the Audio Engineering Society __ 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] K4D #150
Downward Expander is the most valuable, phase inversion (on the iPlus) on AM (when needed), and I've found that the compressor just works better (at least on the K3). There are other minor interesting features, but the reader can do their own feature comparison On Wed, Jun 23, 2021 at 4:53 PM Jim Brown wrote: > On 6/23/2021 11:57 AM, Tim Tucker wrote: > > the other features the EQPlus brings to the table are hard to beat. > > Like what? > > 73, Jim K9YC > __ > 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 ae...@worldwidedx.com > -- Owner, worldwidedx.com AE6LX, Amateur Radio __ 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] K4D #150
On 6/23/2021 11:57 AM, Tim Tucker wrote: the other features the EQPlus brings to the table are hard to beat. Like what? 73, Jim K9YC __ 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] K4D #150
Your comments about the EQ are interesting to me. I continue to use a W2IHY audio stack into my K3, because while the 8 band EQ works well in the K3, the other features the EQPlus brings to the table are hard to beat. As I wait for delivery of my K4, one of my ponderings is if I will finally be able to eliminate the external audio stack. Waiting patiently... :) On Wed, Jun 23, 2021 at 10:14 AM Thaire Bryant wrote: > I tried to post this to groups.II but realized that I Ahmed up with my > Arrl alias. > > I’ve had this one for two weeks and learn something new every day. Having > had a K3 for 10 years and a K3S for over two years (Along with K2s, K1s and > all the “Xs”) a lot is intuitive but I still have to dig to figure out some > of the controls. Fred Caty’s book helps me know where or what to look for. > > The audio and noise control are fantastic. The auto-tune for CW is really > neat! I found the EQ better than my K3S and every audio report has been > superlative. Thank you Wayne and Eric, this one is also a keeper! > > 73 > Thaire. W2APF > __ > 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 ae...@worldwidedx.com -- Owner, worldwidedx.com AE6LX, Amateur Radio __ 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] K4D #150
Our pleasure, Thaire. Thanks for the report. Feel free to email me directly if you have unanswered questions about K4 operation. I'm continuously improving the built-in operating manual. 73, Wayne N6KR > On Jun 23, 2021, at 10:14 AM, Thaire Bryant wrote: > > I tried to post this to groups.II but realized that I Ahmed up with my Arrl > alias. > > I’ve had this one for two weeks and learn something new every day. Having > had a K3 for 10 years and a K3S for over two years (Along with K2s, K1s and > all the “Xs”) a lot is intuitive but I still have to dig to figure out some > of the controls. Fred Caty’s book helps me know where or what to look for. > > The audio and noise control are fantastic. The auto-tune for CW is really > neat! I found the EQ better than my K3S and every audio report has been > superlative. Thank you Wayne and Eric, this one is also a keeper! > > 73 > Thaire. W2APF __ 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
