How Much Compression is Too much? Setting Compression on the Typical HF Transceiver with Jim W6LG
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- čas přidán 7. 07. 2024
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The answer is that a little compression is good and can be very good for the guy that is trying to understand what you are saying. The point being is that we are communicators and we not broadcasters. Although the differences in the recording were subtle, 15dB of compression is just way too much in that it sounds bad to me.
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Excellent short video jim I watch all your videos.I'm in audiophile And as far as I'm concerned, you hit the nail on the head.
This has taught me quite a bit for such a short video. Now I want to play on HF and experiment with the compression! Thanks, Jim!
Glad it was helpful! 73, Jim
Always good stuff Jim..
I try not to run my compression more than 12:1, otherwise I get snap crackle and pop! Thanks Jim!! 👍👍👍
You did a great job of explaining compression without getting overly complicated. You are a great Elmer. Taking my Extra exam in May, wish me luck.
I like the compression better. To my old and work worn ears I am not so good with the bassy tones so the tightness of compression really helps my understanding. 73 deKN6ZVI
Good to know, Jim, thanks for the ear test. 5% it is until I hear otherwise.
Thanks, Jim. Great demo. Clears up a couple things for me. 73, Steve, AE6SS
Glad to help Steve. 73, Jim
Thanks, Jim, for all your videos. This one, like so many others, pack a good amount of incredibly useful info into a short, digestible bite. So glad to have you out there as my CZcams Elmer! (You taught me how to call CQ for my first QSO, and it's been an amazing ride from there!) Keep them coming, and stay healthy! 73, WZ8Q
Hey thanks. That is very. I had chemo today. So at home I slept solid until midnight. The keyboard was still in my lap. 73, Jim
Im smarter today watching your video.
Very useful vid. Thanks Jim.
Glad it was helpful! It was not easy. I kept making mistakes at my old age. 73, Jim W6LG
Hi,good interesting video, nice to see you're looking much better, keep healthy 👍, 73s from Rotterdam. 🖖
I worked 200+ DX With no compression…KWM 2a 30s1… just watched the alc… Great video old man 73…
Yes but you did have some equalization because of those marvelous filters in the KWM2A. I had one too and it worked great. I think the filter was 2.1kHz. The thing punched through pileups over and over and over. It is a great machine that still works today about 60+ years after it was built. Congratulations on having one Mike. 73, Jim
Thank You.
Thanks Jim
Thanks. I am still getting used to Rockln. I miss Grass Valley. 73, Jim
Great comparison. Valuable info. 73, KB3NG
Thanks for watching! 73, Jim
Clear, concise and useful video, thanks very much Jim. 73 G0ACE
Many thanks! Jim W6LG
Great video Jim, I would have liked to have seen the ALC meter and mic gain tuning on the video, this way I could have heard it like the other part of the video
I describe in detail over and over again both of those settings. ALC was always mid scale and I say the amount of compression. I even colorized the wave form to match the amount of processing. So you know where both were at at all times in the video. 73, Jim W6LG
You sounded much better without processing.
Thanks. The goal is not to sound better but to be understood better on the other side of the planet. For a CZcams video I don't use compression or processing. For DX I do use both because it is very effective. I want the other guy to understand every word. Thanks for listening and telling me what you think it better. 73, Jim W6LG
Excellent video Jim. Your audio demonstrates your point perfectly. May I ask what your equalizer settings are? A little guidance on setting them would be helpful. For example why would I set the center frequency of eq1 at 300 rather and 200 or 500? Why will I use a hi Q filter rather than a wide one? If I have a bassey voice do I emphasize the bass or cut it. After many hours of recording into an sdr and listening I have arrived at numbers I am happy with, but it was purely trial and error and a painful process. Thanks, Merv W2OE
It took me a month of trial and error recordings.
200
-10
0
1500
+7
0
3200
+10
0
Those are my current settings. 73, Jim W6LG
Thanks Jim. I don't feel so bad that I took so long.
@@ham-radio
You can't run the compressor without the equalizer?
I wondered about that. I think my EQ is set differently than Jim's so his emphasis is on higher frequencies while I normally have more mids.
In the 101D you have two separate equalizers, one for no processor and one for with processor. And yes you can run with no EQ processed or not.
Great Video Jim! I have always wondered why Icom recommends that compression should peak at 10 to 20 dB? Do you think it could be that their radios are different? It would be a fun experiment to set a Yaesu and a Icom to peak at 10 to 20 dB and see if they sound different. Keep the videos coming, I always learn from you! Robert K5TPC
At 20dB they sounded the same and that was terrible. I think it is a mistake that has been copied from prior instruction manuals. Good question from you Robert! Thanks for asking. 73, Jim
Is it me or is the raw audio much more intelligible?
Since there is no doubt that it sounds much better without processing or compression what is the reason to put those on to any degree. Why do these adjustments supposedly help in dx; is it really proven or just assumed?
Compression makes the high volume lower and the low volume higher, reducing the dynamic range. The lows will be more above background noise, and the Rx volume can be turned up enough to make sure lows are heard without blasting the highs.
CW is 100% compression 😅
Good point! 73, Jim