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#21
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What I had in mind was a slightly higher level
system view. So starting at the easy end, we might specify that the AF amp takes 100mW into 600 Ohms, and delivers 1W out into 8 Ohms. a biscuit to do that might take many forms but would all be interchangeable. If an audio filter were to be included, that would work in and out at 100mV into 600 Ohms with 0dB gain - and would thus be an optional fit prior to the AF amp. I'm not thinking in terms of mother and daughter boards, but of a set of standard biscuit designs that could then be assembled into whatever, test eqpt or rig. Although we'd be using small miniature components (is anything else readily available these days?) that miniaturisation does not have to feature in our biscuits necessarily, so we might have SMDs but spaced out by half-an-inch, or so, to enable us to work with them. Setting aside the infantile remarks and attention-seeking from "the usual suspects", I'm proposing that this be a joint effort. "Straydog" wrote in message x.com... Might we all act together to produce a series of "biscuits" that could then be assembled Lego-like fashion to produce any rig or test equipment? FWIW (pardon me) but I recognize what you are talking about as "descrete devices" (i.e. tubes, transistors, resistors, capacitors, etc.). |
#22
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Each biscuit would be a standard size or a multiple
thereof, I'd tentatively suggest 1 1/2" X 2". Assembly of a transceiver would then consist of biscuits mounted horizontally. The idea is that we put HB firmly back on the map as the standard route into HamRadio, so I'm not after miniaturisation. Perhaps if we could produce rigs of the size of floor plan size of the old FT101 we'd be OK for easily doing our own maintenance....we need to ensure room to get a soldering iron and a probe in there without fear of affecting other parts. For all their simplicity, this spaciousness and room-to-breathe was something desirable that was lost with the demise of valve ("tube" to the Yanks) rigs. wrote in message ... What I had in mind was a slightly higher level system view. So starting at the easy end, we might specify that the AF amp takes 100mW into 600 Ohms, and delivers 1W out into 8 Ohms. a biscuit to do that might take many forms but would all be interchangeable. If an audio filter were to be included, that would work in and out at 100mV into 600 Ohms with 0dB gain - and would thus be an optional fit prior to the AF amp. |
#23
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What I had in mind was a slightly higher level
system view. So starting at the easy end, we might specify that the AF amp takes 100mW into 600 Ohms, and delivers 1W out into 8 Ohms. a biscuit to do that might take many forms but would all be interchangeable. If an audio filter were to be included, that would work in and out at 100mV into 600 Ohms with 0dB gain - and would thus be an optional fit prior to the AF amp. I'm not thinking in terms of mother and daughter boards, but of a set of standard biscuit designs that could then be assembled into whatever, test eqpt or rig. Although we'd be using small miniature components (is anything else readily available these days?) that miniaturisation does not have to feature in our biscuits necessarily, so we might have SMDs but spaced out by half-an-inch, or so, to enable us to work with them. Setting aside the infantile remarks and attention-seeking from "the usual suspects", I'm proposing that this be a joint effort. ================================= Just for information : A modular approach to homebrewing (call it biscuit building) is also very well propagated in the book : Experimental Methods in RF Design ,by W7ZOI , KK7B and W7PUA. Most modules are built in 'ugly contruction' style for best possible (RF) stability and low cost . Frank GM0CSZ / KN6WH |
#24
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"G.A.Evans G4SDW" wrote in message
... No takers for a joint effort, then? Really Gareth, I think this is something you should get going. Prove your idea is a "goer" and I'm sure others will join in. Good luck with it. -- 73 Brian, G8OSN www.g8osn.org.uk Now your amateur licence is free, why not send at least £15 per year to support the Radio Communications Foundation or STELAR? |
#25
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![]() Brian Reay wrote: "G.A.Evans G4SDW" wrote in message ... Might we all act together to produce a series of "biscuits" that could then be assembled Lego-like fashion to produce any rig or test equipment? A truely excellent idea Gareth. Why don't you rough out a plan and design a few of these "biscuits" and publish them on a website or maybe in one of the various journals that support the hobby. Good luck and I look forward to seeing your first designs. I look forward to seeing the implementation of the design of the first unit ever to incorporate the Big-K approach to DSP. -- from Aero Spike |
#26
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"Spike" wrote in message
... Brian Reay wrote: "G.A.Evans G4SDW" wrote in message ... Might we all act together to produce a series of "biscuits" that could then be assembled Lego-like fashion to produce any rig or test equipment? A truely excellent idea Gareth. Why don't you rough out a plan and design a few of these "biscuits" and publish them on a website or maybe in one of the various journals that support the hobby. Good luck and I look forward to seeing your first designs. I look forward to seeing the implementation of the design of the first unit ever to incorporate the Big-K approach to DSP. To be fair, I'd like to see some of his projects published and will even offer to host them on a website- with full credit for their design etc. attributed to Gareth. -- 73 Brian, G8OSN www.g8osn.org.uk Now your amateur licence is free, why not send at least £15 per year to support the Radio Communications Foundation or STELAR? |
#27
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![]() Brian Reay wrote: "Spike" wrote in message .. . I look forward to seeing the implementation of the design of the first unit ever to incorporate the Big-K approach to DSP. To be fair, I'd like to see some of his projects published and will even offer to host them on a website - with full credit for their design etc. attributed to Gareth. Quite so. It's just going to be interesting seeing how certain topics he's posted on in the past turn out in reality. A cynic might say that by involving others in the design, the fall-guys are already being lined up ready for any failure that might arise. -- from Aero Spike |
#28
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"Spike" wrote in message
... Brian Reay wrote: "Spike" wrote in message . .. I look forward to seeing the implementation of the design of the first unit ever to incorporate the Big-K approach to DSP. To be fair, I'd like to see some of his projects published and will even offer to host them on a website - with full credit for their design etc. attributed to Gareth. Quite so. It's just going to be interesting seeing how certain topics he's posted on in the past turn out in reality. A cynic might say that by involving others in the design, the fall-guys are already being lined up ready for any failure that might arise. Well, if he comes up with some designs he is vindicated. If the biscuits turn out to never to be at least half baked then you are vindicated. He has suggested the idea, I've supported it and offered to host the designs the ball is now in his court. -- 73 Brian, G8OSN www.g8osn.org.uk Now your amateur licence is free, why not send at least £15 per year to support the Radio Communications Foundation or STELAR? |
#29
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![]() Brian Reay wrote: "Spike" wrote in message .. . Brian Reay wrote: "Spike" wrote in message ... I look forward to seeing the implementation of the design of the first unit ever to incorporate the Big-K approach to DSP. To be fair, I'd like to see some of his projects published and will even offer to host them on a website - with full credit for their design etc. attributed to Gareth. Quite so. It's just going to be interesting seeing how certain topics he's posted on in the past turn out in reality. A cynic might say that by involving others in the design, the fall-guys are already being lined up ready for any failure that might arise. Well, if he comes up with some designs he is vindicated. If the biscuits turn out to never to be at least half baked then you are vindicated. He has suggested the idea, I've supported it and offered to host the designs the ball is now in his court. Well, I still recall the FT-707 that was bought in order to implement a DSP CW transceiver for 136 kHz. It fell at the first hurdle as it wouldn't work on CW. Despite receiving helpful suggestions via this medium, Gareth never saw them due to 'an ISP failure'; and nothing more has been heard of the project - at least on here. -- from Aero Spike |
#30
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One notorious attention seeker has milked the suggestion
for everything he could get out of it, and has offered no support for the proposal at all, but is claiming that he has. Not a difficult guess to name the culprit, I think! wrote in message ... No takers for a joint effort, then? wrote in message ... I wonder if we who are the Usenet-frequenting Radio Hams might somehow get together to sort out the dreadful mess that has been created in no small part by the self-interest of those who control the RSCB? |
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