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The product we've all been waiting for;!...
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The product we've all been waiting for;!...
"tony sayer" wrote in message ... http://www.shakti-innovations.com/audiovideo.htm -- Tony Sayer A very expensive lump of ferrite perhaps?? |
The product we've all been waiting for;!...
"tony sayer" wrote in message ... http://www.shakti-innovations.com/audiovideo.htm -- Never mind that nonsense, Tony - I'm still waiting to hear if an FM signal strength of '55 dBf' as per: http://www.apah69.dsl.pipex.com/show/Signal.JPG Is reckoned to be 'good' (or 'good enough')...??? (Certainly sounds OK!!) |
The product we've all been waiting for;!...
"Keith G" wrote in message ... "tony sayer" wrote in message ... http://www.shakti-innovations.com/audiovideo.htm -- Never mind that nonsense, Tony - I'm still waiting to hear if an FM signal strength of '55 dBf' as per: http://www.apah69.dsl.pipex.com/show/Signal.JPG Is reckoned to be 'good' (or 'good enough')...??? (Certainly sounds OK!!) Keith:- If I haven't pressed any wrong tits on my calculator, 55dBf means 55dB above 1 femtowatt, or 10^12 watts 55dB is a power ratio of 3.16 x 10^5 so 55dBf is a power level of 0.316 microwatts. Assuming a standard 75 ohm antenna, that translates to 4.87 mV, so I'd say that was a pretty good signal. S. -- http://audiopages.googlepages.com |
The product we've all been waiting for;!...
"tony sayer" wrote in message ... http://www.shakti-innovations.com/audiovideo.htm -- Tony Sayer What staggers me is the references they give. Do Abbey Road *really* use stuff like this, and do they know their name is being use by these people? Glad to see there isn't a single Broadcaster amongst their references. S. -- http://audiopages.googlepages.com |
The product we've all been waiting for;!...
On Wed, 27 Jun 2007 17:18:01 +0100, "Serge Auckland"
wrote: "tony sayer" wrote in message ... http://www.shakti-innovations.com/audiovideo.htm -- Tony Sayer What staggers me is the references they give. Do Abbey Road *really* use stuff like this, and do they know their name is being use by these people? Glad to see there isn't a single Broadcaster amongst their references. S. They probably sent a free one there, and have based their claim on the fact that it may, just possibly, not have actually been thrown in the bin. d -- Pearce Consulting http://www.pearce.uk.com |
The product we've all been waiting for;!...
In article , Keith G
writes "tony sayer" wrote in message ... http://www.shakti-innovations.com/audiovideo.htm -- Never mind that nonsense, Tony - I'm still waiting to hear if an FM signal strength of '55 dBf' as per: http://www.apah69.dsl.pipex.com/show/Signal.JPG Is reckoned to be 'good' (or 'good enough')...??? (Certainly sounds OK!!) So it should, how do you think it compares with DAB?... -- Tony Sayer |
The product we've all been waiting for;!...
In article , Serge Auckland
writes "Keith G" wrote in message ... "tony sayer" wrote in message ... http://www.shakti-innovations.com/audiovideo.htm -- Never mind that nonsense, Tony - I'm still waiting to hear if an FM signal strength of '55 dBf' as per: http://www.apah69.dsl.pipex.com/show/Signal.JPG Is reckoned to be 'good' (or 'good enough')...??? (Certainly sounds OK!!) Keith:- If I haven't pressed any wrong tits on my calculator, 55dBf means 55dB above 1 femtowatt, or 10^12 watts 55dB is a power ratio of 3.16 x 10^5 so 55dBf is a power level of 0.316 microwatts. Assuming a standard 75 ohm antenna, that translates to 4.87 mV, so I'd say that was a pretty good signal. S. That tuner uses a common place audio demod chip just to drive the sig and deviation meters!. They use a totally separate pulse count discriminator for the audio .. and excellent it is too:)) -- Tony Sayer |
The product we've all been waiting for;!...
In article , Serge Auckland
writes "tony sayer" wrote in message ... http://www.shakti-innovations.com/audiovideo.htm -- Tony Sayer What staggers me is the references they give. Do Abbey Road *really* use stuff like this, and do they know their name is being use by these people? It gets even better!!.. http://www.shakti-innovations.com/hallograph.htm The more stupid the name of all that carp the more silly it is!.. Glad to see there isn' t a single Broadcaster amongst their references. S. -- Tony Sayer |
The product we've all been waiting for;!...
In article , Don Pearce
writes On Wed, 27 Jun 2007 17:18:01 +0100, "Serge Auckland" wrote: "tony sayer" wrote in message ... http://www.shakti-innovations.com/audiovideo.htm -- Tony Sayer What staggers me is the references they give. Do Abbey Road *really* use stuff like this, and do they know their name is being use by these people? Glad to see there isn't a single Broadcaster amongst their references. S. They probably sent a free one there, and have based their claim on the fact that it may, just possibly, not have actually been thrown in the bin. d LOL!... prolly the truth! -- Tony Sayer |
The product we've all been waiting for;!...
"tony sayer" wrote in message ... In article , Serge Auckland writes "tony sayer" wrote in message ... http://www.shakti-innovations.com/audiovideo.htm -- Tony Sayer What staggers me is the references they give. Do Abbey Road *really* use stuff like this, and do they know their name is being use by these people? It gets even better!!.. http://www.shakti-innovations.com/hallograph.htm The more stupid the name of all that carp the more silly it is!.. Glad to see there isn' t a single Broadcaster amongst their references. S. -- Tony Sayer Makes Peter Belt almost look like an engineer..... S. -- http://audiopages.googlepages.com |
The product we've all been waiting for;!...
"Serge Auckland" wrote in message ... "Keith G" wrote in message ... "tony sayer" wrote in message ... http://www.shakti-innovations.com/audiovideo.htm -- Never mind that nonsense, Tony - I'm still waiting to hear if an FM signal strength of '55 dBf' as per: http://www.apah69.dsl.pipex.com/show/Signal.JPG Is reckoned to be 'good' (or 'good enough')...??? (Certainly sounds OK!!) Keith:- If I haven't pressed any wrong tits on my calculator, 55dBf means 55dB above 1 femtowatt, or 10^12 watts 55dB is a power ratio of 3.16 x 10^5 so 55dBf is a power level of 0.316 microwatts. Assuming a standard 75 ohm antenna, that translates to 4.87 mV, so I'd say that was a pretty good signal. OK, good. Thanks for slogging that out Serge - I had wondered once or twice if I'd got 'enough' aerial as a wee bit of hiss can creep in if the signal drops as low as 40 dBf, which it can do occasionally. |
The product we've all been waiting for;!...
"tony sayer" wrote That tuner uses a common place audio demod chip just to drive the sig and deviation meters!. They use a totally separate pulse count discriminator for the audio .. and excellent it is too:)) Here's the plan, if you fancied running one up: http://www.fmtunerinfo.com/KT-917schematic.pdf :-) |
The product we've all been waiting for;!...
"tony sayer" wrote in message ... In article , Keith G writes "tony sayer" wrote in message ... http://www.shakti-innovations.com/audiovideo.htm -- Never mind that nonsense, Tony - I'm still waiting to hear if an FM signal strength of '55 dBf' as per: http://www.apah69.dsl.pipex.com/show/Signal.JPG Is reckoned to be 'good' (or 'good enough')...??? (Certainly sounds OK!!) So it should, how do you think it compares with DAB?... This is why I queried you not liking vinyl - to me, the comparison between FM and DAB is very like the comparison between LP and CD. They both do a similar job differently and they both have their strengths and weaknesses. (And preferring one doesn't mean I hate the other...) Bear in mind I mostly use valve amplification and, often as not, Lowthers - which goes a long way to making DAB sound not too bad at all, so I'm not going to say FM completely ****es on DAB. It does in the final analysis, but the DAB can sound very acceptable on my setup. Also, Classic FM on FM can get a bit much when I'm on the TLS80s (too much 'wind in the mic') - when I chop to the DAB to 'clean the sound up', although this is never a problem when I'm on the Lowthers, as they are too sensible to try and dredge 'usable sound' up from the same muddy depths!! DAB on the handy little Acoustic Solutions FM/DAB set I use is very good compared to some I have heard and I have somewhat revised my opinions, but the FM is unfortunately always crap, despite the signal strength appearing to be quite good when on the main FM aerial! Anyway, while I'm on, here are some 'aerial' stories you might find amusing: http://www.wrightsaerials.tv/aerialstories.html |
The product we've all been waiting for;!...
In article , Keith G
writes "tony sayer" wrote in message ... In article , Keith G writes "tony sayer" wrote in message ... http://www.shakti-innovations.com/audiovideo.htm -- Never mind that nonsense, Tony - I'm still waiting to hear if an FM signal strength of '55 dBf' as per: http://www.apah69.dsl.pipex.com/show/Signal.JPG Is reckoned to be 'good' (or 'good enough')...??? (Certainly sounds OK!!) So it should, how do you think it compares with DAB?... This is why I queried you not liking vinyl - to me, the comparison between FM and DAB is very like the comparison between LP and CD. They both do a similar job differently and they both have their strengths and weaknesses. (And preferring one doesn't mean I hate the other...) Bear in mind I mostly use valve amplification and, often as not, Lowthers - which goes a long way to making DAB sound not too bad at all, so I'm not going to say FM completely ****es on DAB. It does in the final analysis, but the DAB can sound very acceptable on my setup. Also, Classic FM on FM can get a bit much when I'm on the TLS80s (too much 'wind in the mic') - when I chop to the DAB to 'clean the sound up', although this is never a problem when I'm on the Lowthers, as they are too sensible to try and dredge 'usable sound' up from the same muddy depths!! Well they do go to town on the processing which has a lot to do with it;!.. DAB on the handy little Acoustic Solutions FM/DAB set I use is very good compared to some I have heard and I have somewhat revised my opinions, but the FM is unfortunately always crap, despite the signal strength appearing to be quite good when on the main FM aerial! Anyway, while I'm on, here are some 'aerial' stories you might find amusing: http://www.wrightsaerials.tv/aerialstories.html Yes know him very well he's often on the TX List group. What he doesn't know about aerials isn't worth knowing;) Pity he didn't do that original FM aerial;) -- Tony Sayer |
The product we've all been waiting for;!...
"tony sayer" wrote Well they do go to town on the processing which has a lot to do with it;!.. Hah! Have a look at these little movie clips (Deviation Meter): http://www.apah69.dsl.pipex.com/show/BBCRadio3.wmv http://www.apah69.dsl.pipex.com/show/ClassicFM.wmv Hardly a fair comparison, but these were both taken only so many minutes ago and even the *quiet ending* on the R3 bit shows a damn sight more needle excursion than the Classic FM bit!! (Excuse the noises - the hiss is the camera, the wheezing is me...!! :-) Pity he didn't do that original FM aerial;) The aerial's fine (see Serge's reply) and when set to Multipath the meter reads rushes off to check, takes pic Virtually Zero!! http://www.apah69.dsl.pipex.com/show/Multipath.JPG :-) |
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"Keith G" wrote The aerial's fine (see Serge's reply) and when set to Multipath the meter reads rushes off to check, takes pic Virtually Zero!! http://www.apah69.dsl.pipex.com/show/Multipath.JPG :-) Which, I might add, confirms what we found when Don and I sweated it down with a scope some months back... |
The product we've all been waiting for;!...
tony sayer wrote:
http://www.shakti-innovations.com/audiovideo.htm "The SHAKTI Electromagnetic Stabilizer" ... "Placement on automotive CPUs has measurably increased engine horsepower." .... |
The product we've all been waiting for;!...
In article , Andrew Haley andrew29@
littlepinkcloud.invalid writes tony sayer wrote: http://www.shakti-innovations.com/audiovideo.htm "The SHAKTI Electromagnetic Stabilizer" ... "Placement on automotive CPUs has measurably increased engine horsepower." ... Another one here this rocks! ;) http://www.machinadynamica.com/machina31.htm -- Tony Sayer |
The product we've all been waiting for;!...
On Wed, 27 Jun 2007 17:33:39 +0100, Don Pearce wrote:
On Wed, 27 Jun 2007 17:18:01 +0100, "Serge Auckland" wrote: "tony sayer" wrote in message ... http://www.shakti-innovations.com/audiovideo.htm -- Tony Sayer What staggers me is the references they give. Do Abbey Road *really* use stuff like this, and do they know their name is being use by these people? Glad to see there isn't a single Broadcaster amongst their references. S. They probably sent a free one there, and have based their claim on the fact that it may, just possibly, not have actually been thrown in the bin. Well certain recording engineers seem to use this sort of thing. I know that Andy Jackson, who does most of the Pink Floyd remasters, uses China Cones. |
The product we've all been waiting for;!...
On Thu, 28 Jun 2007 13:11:20 +0100, "James Perrett"
wrote: On Wed, 27 Jun 2007 17:33:39 +0100, Don Pearce wrote: On Wed, 27 Jun 2007 17:18:01 +0100, "Serge Auckland" wrote: "tony sayer" wrote in message ... http://www.shakti-innovations.com/audiovideo.htm -- Tony Sayer What staggers me is the references they give. Do Abbey Road *really* use stuff like this, and do they know their name is being use by these people? Glad to see there isn't a single Broadcaster amongst their references. S. They probably sent a free one there, and have based their claim on the fact that it may, just possibly, not have actually been thrown in the bin. Well certain recording engineers seem to use this sort of thing. I know that Andy Jackson, who does most of the Pink Floyd remasters, uses China Cones. Probably trying to recapture the state of mind they all had back in the sixties. d -- Pearce Consulting http://www.pearce.uk.com |
The product we've all been waiting for;!...
"Don Pearce" wrote in message ... On Thu, 28 Jun 2007 13:11:20 +0100, "James Perrett" wrote: Well certain recording engineers seem to use this sort of thing. I know that Andy Jackson, who does most of the Pink Floyd remasters, uses China Cones. Probably trying to recapture the state of mind they all had back in the sixties. Which produced a damn sight better 'sound' than they can today..... |
The product we've all been waiting for;!...
"Serge Auckland" wrote in message ... "Keith G" wrote http://www.apah69.dsl.pipex.com/show/Signal.JPG Is reckoned to be 'good' (or 'good enough')...??? (Certainly sounds OK!!) Keith:- If I haven't pressed any wrong tits on my calculator, 55dBf means 55dB above 1 femtowatt, or 10^12 watts 55dB is a power ratio of 3.16 x 10^5 so 55dBf is a power level of 0.316 microwatts. Assuming a standard 75 ohm antenna, that translates to 4.87 mV, so I'd say that was a pretty good signal. Hi Serge - I found this in the manual a little earlier: http://www.apah69.dsl.pipex.com/show/Voltages.JPG (RTFM was never my strong suit!! ;-) How does it sit with your figuring? There's a bit of a discrepancy - is it easily explained? (Just out of interest and FYI only - no bother whatsoever to me! :-) |
The product we've all been waiting for;!...
"Keith G" wrote in message ... "Serge Auckland" wrote in message ... "Keith G" wrote http://www.apah69.dsl.pipex.com/show/Signal.JPG Is reckoned to be 'good' (or 'good enough')...??? (Certainly sounds OK!!) Keith:- If I haven't pressed any wrong tits on my calculator, 55dBf means 55dB above 1 femtowatt, or 10^12 watts 55dB is a power ratio of 3.16 x 10^5 so 55dBf is a power level of 0.316 microwatts. Assuming a standard 75 ohm antenna, that translates to 4.87 mV, so I'd say that was a pretty good signal. Hi Serge - I found this in the manual a little earlier: http://www.apah69.dsl.pipex.com/show/Voltages.JPG (RTFM was never my strong suit!! ;-) How does it sit with your figuring? There's a bit of a discrepancy - is it easily explained? (Just out of interest and FYI only - no bother whatsoever to me! :-) No, not easily explained. Take the example of 50dBf = 86.5uV 75 ohm 86.5 uV into 75 ohms is a power level of 99.76 femtowatts, call it 100 femtowatts. That would be 20dBf in my book *if* dBf means dBs relative to 1 femtowatt. 1 femtowatt is 10^-12 AFAIAC Consequently, their dBf is not relative to 1 femtowatt, or their femtowatt is not mine. According to their figures, you would need a signal strength of better than 80 to get completely (audibly) noise-free audio. Working back, 86.5uV /75 ohm is 50dB relative to 1 attowatt or 10^-15 watt S. -- http://audiopages.googlepages.com |
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1 femtowatt is 10^-12 AFAIAC
"femto" is the prefix for 10^-15. Martin -- M.A.Poyser Tel.: 07967 110890 Manchester, U.K. http://www.livejournal.com/userinfo.bml?user=fleetie |
The product we've all been waiting for;!...
"Serge Auckland" wrote in message ... "Keith G" wrote Hi Serge - I found this in the manual a little earlier: http://www.apah69.dsl.pipex.com/show/Voltages.JPG (RTFM was never my strong suit!! ;-) How does it sit with your figuring? There's a bit of a discrepancy - is it easily explained? (Just out of interest and FYI only - no bother whatsoever to me! :-) No, not easily explained. Take the example of 50dBf = 86.5uV 75 ohm 86.5 uV into 75 ohms is a power level of 99.76 femtowatts, call it 100 femtowatts. That would be 20dBf in my book *if* dBf means dBs relative to 1 femtowatt. 1 femtowatt is 10^-12 AFAIAC Probably not, asitappens: http://en.wikipedia.org/wiki/Atto- Consequently, their dBf is not relative to 1 femtowatt, or their femtowatt is not mine. According to their figures, you would need a signal strength of better than 80 to get completely (audibly) noise-free audio. Working back, 86.5uV /75 ohm is 50dB relative to 1 attowatt or 10^-15 watt OK, disregarding the 'SI prefix' confusion, there's summat not too clear here but the tuner's been retired pro temps in favour of the.... .....wait for it.... ....DAB tuner...!! As Swim picked it consistently over the FM tuner last night (or the the night before) as she thought the FM was comparatively boomy and that there was a feint hiss with a signal strength of about 55 dBf, so your figure of '80 dBf' for *completely* clean audio might not be too wide of the mark? (No good asking me - the FM sounds as 'good as CD' to me!! :-) |
The product we've all been waiting for;!...
"Fleetie" wrote in message ... 1 femtowatt is 10^-12 AFAIAC "femto" is the prefix for 10^-15. Martin -- M.A.Poyser Tel.: 07967 110890 Manchester, U.K. http://www.livejournal.com/userinfo.bml?user=fleetie Correct, my error. How could I forget Pico? What this means is that the tuner's manual is correct, and that you *do* need a signal level of 80 or thereabouts for stable noise-free reception. S. -- http://audiopages.googlepages.com |
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