From: Jongjay L. <jon...@ho...> - 2011-11-06 03:25:05
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Hello community, Comments and responses regarding my earlier announcement. For further inquery, please send email to jon...@ho... (from Alexander Chemeris) > Is the hardware open source? Yes, it is open source and API compatible with gnuradio, I tested my hardware running gnuradio-3.3.0, OpenBTS 2.6, and Fedora11. > Also, the naming of your products are misleading in my opinion.. Apologize about this confusion. For now, I call it mini eWave mother board and TRX 900/1800 daughter board. USRP1, USRP2 are Ettus Research trademark. >Do you actually mean that maximum output power is -4dBm, which is 0.4mW? I measured from TX/RX output port with Agilent E4406A, which is around -4 dBm, for desktop testing, I plan to add 0.5Watt 6V mini PA with built-in duplexer and LNA , and it should pump output to 27dBm with user adjustable attenuation from OpenBTS configuration. >What exactly does your "0.05 ppm" mean in the OCXO specs? Is it >initial calibration accuracy, or temperature stability, or overall >stability for 1year, or something else? list OCXO specs for your information - Temp stability <= 1x10*(-8) @ -20C~+70C (Celcius) - day aging <= 1x10*(-9) - year aging <=1x10*(-8) - accuracy <=1x10*(-8) measured @ 25C after 30 days it should stabilized to <= 5x10*(-8) - phase noise <= -135dBc/Hz @ 1khz - square pulse - wave output up/down <= 5ns - supply voltage +5Volt - in rush current draw <= 700mA - working current draw <= 300mA (from Belial & Axelle) > Also, what's "mini" about it? the size? mini eWave mother board is 118x97mm (4.65x3.82 inches) mini TRX 900/1800 daughter board is 56x98mm (2.2x3.86 inches) >The price I hope! :-) Limited Sample PRICE: - mini motherboard USD$608 or Euro358/pcs - mini TRX900/1800 USD$195 or Euro128/pcs - 52Mhz 0.05ppm OCXO USD$274 or Euro200/pcs plus shipping and handling PCB is made with multi-layer FR4, green resist, nickel-gold finishes. connection between mother board and daughter 40-pins milli-grid. MB and DB chip side are on opposite side not one stack on top of the other with Molex connector, design for better heat transfer. All board tested before shipping. Our main motivation is to offer this community alternative hardware solution. |
From: Alexander C. <ale...@gm...> - 2011-11-06 07:58:02
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Hi, 2011/11/6 Jongjay Liou <jon...@ho...>: > (from Alexander Chemeris) >> Is the hardware open source? > Yes, it is open source and API compatible with gnuradio, I tested my > hardware running gnuradio-3.3.0, OpenBTS 2.6, and Fedora11. So, where are the sources? >> Also, the naming of your products are misleading in my opinion.. > Apologize about this confusion. > For now, I call it mini eWave mother board and TRX 900/1800 daughter > board. USRP1, USRP2 are Ettus Research trademark. Good decision! -- Regards, Alexander Chemeris. |
From: Alexander C. <ale...@gm...> - 2011-11-06 08:26:47
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Jongjay, You can easily create a project at Google Code: http://code.google.com/hosting/createProject Or at github: https://github.com/ On Sun, Nov 6, 2011 at 12:04, Jongjay Liou <jon...@ho...> wrote: > If there is a place to hold I can upload my circuit schematics. > > Jongjay > > ----- Original Message ----- > From: "Alexander Chemeris" <ale...@gm...> > To: "Jongjay Liou" <jon...@ho...> > Cc: <ope...@li...> > Sent: Sunday, November 06, 2011 3:57 PM > Subject: Re: [Openbts-discuss] mini eWave MB and TRX 900/1800 DB for Gnuradio > > > Hi, > > 2011/11/6 Jongjay Liou <jon...@ho...>: >> (from Alexander Chemeris) >>> Is the hardware open source? >> Yes, it is open source and API compatible with gnuradio, I tested my >> hardware running gnuradio-3.3.0, OpenBTS 2.6, and Fedora11. > > So, where are the sources? > >>> Also, the naming of your products are misleading in my opinion.. >> Apologize about this confusion. >> For now, I call it mini eWave mother board and TRX 900/1800 daughter >> board. USRP1, USRP2 are Ettus Research trademark. > > Good decision! > > -- > Regards, > Alexander Chemeris. > -- Regards, Alexander Chemeris. |
From: Harald W. <la...@gn...> - 2011-11-17 10:01:42
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Hi Jonjay Liou, On Sun, Nov 06, 2011 at 11:25:07AM +0800, Jongjay Liou wrote: > For further inquery, please send email to jon...@ho... > > (from Alexander Chemeris) > > Is the hardware open source? > Yes, it is open source and API compatible with gnuradio, I tested my hardware running gnuradio-3.3.0, OpenBTS 2.6, and Fedora11. Alexander has earlier inquired about the source code, but I didn't see any response. Can you please let me know where the source code for your eWave boards is located? Also, what exactly is "open source". Are you referring to 1) the PC side drivers only? 2) the VHDL/Verilog of the FPGA? 3) the schematics of the device? In the case of Ettus, all three are provided under an open source license and are available for public download. Are you providing the same? Where can we find it? > >Do you actually mean that maximum output power is -4dBm, which is 0.4mW? > I measured from TX/RX output port with Agilent E4406A, which is > around -4 dBm, for desktop testing, I plan to add 0.5Watt 6V mini PA > with built-in duplexer and LNA , and it should pump output to 27dBm > with user adjustable attenuation from OpenBTS configuration. I think your product may be interesting, if the source code is provided (see above), and if you fix hatever problem is causing this extremely low -4 dBm level. I think for most people (not only openbts users), -4dBm is way too low. It basically means you have to connect everything by wire and cannot reliably transmit signals over an antenna... Regards, Harald -- - Harald Welte <la...@gn...> http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6) |
From: Jongjay L. <jon...@ho...> - 2011-11-18 04:35:43
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Harald and the community, My board is purely hardware re-design based on Ettus hardware, there is no specific software source code related to my hardware. Mini eWave MB and DB hardware is 100% API compatible with gnuradio and OpenBTS, that means it can run gnuradio, openbts, and all related FPGA code, as my work is just hardware related. I hope I explain this well. Currently, I am a bit tie up with my current work, I will release my hardware circuit schematics (mini MB and TRX DB) in google project later on. Best regards, Jongjay Liou +86-18662697077 KS eWave Co. Ltd. Tel +86-512-50190031 Fax +86-512-50190032 SKYPE jongjay_liou3712 jon...@ho... ----- Original Message ----- From: "Harald Welte" <la...@gn...> To: "Jongjay Liou" <jon...@ho...> Cc: <ope...@li...> Sent: Thursday, November 17, 2011 3:42 PM Subject: Re: [Openbts-discuss] mini eWave MB and TRX 900/1800 DB for Gnuradio > Hi Jonjay Liou, > > On Sun, Nov 06, 2011 at 11:25:07AM +0800, Jongjay Liou wrote: > >> For further inquery, please send email to jon...@ho... >> >> (from Alexander Chemeris) >> > Is the hardware open source? >> Yes, it is open source and API compatible with gnuradio, I tested my hardware running gnuradio-3.3.0, OpenBTS 2.6, and Fedora11. > > Alexander has earlier inquired about the source code, but I didn't see > any response. Can you please let me know where the source code for your > eWave boards is located? > > Also, what exactly is "open source". Are you referring to > > 1) the PC side drivers only? > 2) the VHDL/Verilog of the FPGA? > 3) the schematics of the device? > > In the case of Ettus, all three are provided under an open source > license and are available for public download. Are you providing the same? > Where can we find it? > >> >Do you actually mean that maximum output power is -4dBm, which is 0.4mW? >> I measured from TX/RX output port with Agilent E4406A, which is >> around -4 dBm, for desktop testing, I plan to add 0.5Watt 6V mini PA >> with built-in duplexer and LNA , and it should pump output to 27dBm >> with user adjustable attenuation from OpenBTS configuration. > > I think your product may be interesting, if the source code is provided > (see above), and if you fix hatever problem is causing this extremely > low -4 dBm level. I think for most people (not only openbts users), > -4dBm is way too low. It basically means you have to connect everything > by wire and cannot reliably transmit signals over an antenna... > > Regards, > Harald > -- > - Harald Welte <la...@gn...> http://laforge.gnumonks.org/ > ============================================================================ > "Privacy in residential applications is a desirable marketing option." > (ETSI EN 300 175-7 Ch. A6) > |