Yup! But the fact remains that we do not see this everyday
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| SSBSC MPX SSB transmission tests in Poland, Europe. https://forums.stereotool.com/viewtopic.php?t=5706 |
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| Author: | oldiesstation [ Tue Nov 18, 2014 3:28 pm ] |
| Post subject: | Re: SSBSC MPX SSB transmission tests in Poland, Europe. |
Nothing here guys,just black magic,hocus pocus. the Omnia video was not scientific.It should have been a A/B comparison all on the same ride, not done one day and then the next.DUH? Just Omnia trying to sell a processor.. |
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| Author: | Slawomir B. [ Mon Nov 24, 2014 2:51 pm ] |
| Post subject: | Re: SSBSC MPX SSB transmission tests in Poland, Europe. |
Yup! But the fact remains that we do not see this everyday
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| Author: | hvz [ Fri Dec 05, 2014 4:13 pm ] |
| Post subject: | Re: SSBSC MPX SSB transmission tests in Poland, Europe. |
The newest FM receiver chips can't handle SSB anymore, they use tricks to reduce multipath (!) which cannot be used together with SSB. I visited the manufacturer yesterday and we've tested it. So I would hereby declare SSB to be dead...... Only the version that starts SSB at about 12 kHz ("Probably optimal" mode in Stereo Tool) was kinda ok. |
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| Author: | mpex2006km [ Fri Dec 12, 2014 4:01 pm ] |
| Post subject: | Re: SSBSC MPX SSB transmission tests in Poland, Europe. |
Hi Hans what I want to ask real quick is am Asymmetrical DSB Filtering. So more bandwidth can be used in a stereo transmission. |
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| Author: | hvz [ Fri Dec 12, 2014 5:08 pm ] |
| Post subject: | Re: SSBSC MPX SSB transmission tests in Poland, Europe. |
Quote: Hi Hans what I want to ask real quick is am Asymmetrical DSB Filtering. So more bandwidth can be used in a stereo transmission.
You mean to protect the RDS signal and still be able to go above 16 kHz?1. Most people won't notice it at all 2. Most radio's will filter out these frequencies (if they didn't you would hear the RDS signal as well) 3. Many radio's including the latest generation car radio's can't handle it and will switch (at least partially) to mono even if reception is perfect. So.... not a good idea. You could try it out using one of the SSB modes and a higher maximum frequency if you want. |
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| Author: | mpex2006km [ Sat Dec 13, 2014 5:16 pm ] |
| Post subject: | Re: SSBSC MPX SSB transmission tests in Poland, Europe. |
Quote: Quote: Hi Hans what I want to ask real quick is am Asymmetrical DSB Filtering. So more bandwidth can be used in a stereo transmission.
You mean to protect the RDS signal and still be able to go above 16 kHz?1. Most people won't notice it at all 2. Most radio's will filter out these frequencies (if they didn't you would hear the RDS signal as well) 3. Many radio's including the latest generation car radio's can't handle it and will switch (at least partially) to mono even if reception is perfect. So.... not a good idea. You could try it out using one of the SSB modes and a higher maximum frequency if you want. |
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| Author: | hvz [ Sun Dec 14, 2014 12:57 am ] |
| Post subject: | Re: SSBSC MPX SSB transmission tests in Poland, Europe. |
And do you hear more highs with that on any receiver? |
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| Author: | mpex2006km [ Sun Dec 14, 2014 10:44 am ] |
| Post subject: | Re: SSBSC MPX SSB transmission tests in Poland, Europe. |
Quote: And do you hear more highs with that on any receiver?
70% no difference 20% yes there is a difference 10% not a difference from 14khz and above (bad/low freq filtering) |
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