[time-nuts] DTV tuner chip usable for GPS front end?
I suppose there is limited interest in homebrew GPS receivers given how cheap the fully integrated chipsets are. However, just noticed the below tuner chip intended for DTV, actually lists GPS L1 as an applicable frequency. A TV Tuner USB stick using this chip is available for $20, and some SDR type software is apparently working with it: http://sdr.osmocom.org/trac/wiki/rtl-sdr Has anyone here played with this device? from http://www.elonics.com/product.do?id=1 The E4000 is a highly integrated multi band RF tuner IC implemented in CMOS, ideal for low power digital terrestrial TV and radio broadcast receiver solutions. The E4000 contains a single input LNA with RF filter, whose centre frequency can be programmed over the complete frequency range from 64MHz to 1700MHz. Broadcast Standards DVB-T (174-240MHz, 470-854MHz) ISDB-T (470-862MHz) DVB-H (470-854MHz, 1672-1678MHz) CMMB (470-862MHz) D-TMB (470-862MHz) T-DMB (174-240MHz, 1452-1492MHz) DAB (174-240MHz, 1452-1492MHz) MediaFLO (470-862, 1452-1492MHz) GPS L1 band (1575MHz) [...] ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] DTV tuner chip usable for GPS front end?
I suppose there is limited interest in homebrew GPS receivers given how cheap the fully integrated chipsets are. However, just noticed the below tuner chip intended for DTV, actually lists GPS L1 as an applicable frequency. A TV Tuner USB stick using this chip is available for $20, and some SDR type software is apparently working with it: http://sdr.osmocom.org/trac/wiki/rtl-sdr Has anyone here played with this device? from http://www.elonics.com/product.do?id=1 The E4000 is a highly integrated multi band RF tuner IC implemented in CMOS, ideal for low power digital terrestrial TV and radio broadcast receiver solutions. The E4000 contains a single input LNA with RF filter, whose centre frequency can be programmed over the complete frequency range from 64MHz to 1700MHz. Broadcast Standards DVB-T (174-240MHz, 470-854MHz) ISDB-T (470-862MHz) DVB-H (470-854MHz, 1672-1678MHz) CMMB (470-862MHz) D-TMB (470-862MHz) T-DMB (174-240MHz, 1452-1492MHz) DAB (174-240MHz, 1452-1492MHz) MediaFLO (470-862, 1452-1492MHz) GPS L1 band (1575MHz) [...] .. and available ready built here: http://www.funcubedongle.com/ but perhaps not fast enough for you. Cheers, David -- SatSignal software - quality software written to your requirements Web: http://www.satsignal.eu Email: david-tay...@blueyonder.co.uk ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] DTV tuner chip usable for GPS front end?
On Wed, 21 Mar 2012 16:40:27 -, David J Taylor david-tay...@blueyonder.co.uk wrote: I suppose there is limited interest in homebrew GPS receivers given how cheap the fully integrated chipsets are. However, just noticed the below tuner chip intended for DTV, actually lists GPS L1 as an applicable frequency. A TV Tuner USB stick using this chip is available for $20, and some SDR type software is apparently working with it: http://sdr.osmocom.org/trac/wiki/rtl-sdr Has anyone here played with this device? from http://www.elonics.com/product.do?id=1 The E4000 is a highly integrated multi band RF tuner IC implemented in CMOS, ideal for low power digital terrestrial TV and radio broadcast receiver solutions. The E4000 contains a single input LNA with RF filter, whose centre frequency can be programmed over the complete frequency range from 64MHz to 1700MHz. Broadcast Standards DVB-T (174-240MHz, 470-854MHz) ISDB-T (470-862MHz) DVB-H (470-854MHz, 1672-1678MHz) CMMB (470-862MHz) D-TMB (470-862MHz) T-DMB (174-240MHz, 1452-1492MHz) DAB (174-240MHz, 1452-1492MHz) MediaFLO (470-862, 1452-1492MHz) GPS L1 band (1575MHz) [...] .. and available ready built here: http://www.funcubedongle.com/ but perhaps not fast enough for you. Or not wide enough in this case. The FunCube technical FAQ says the bandwidth is about 80 KHz as it is designed for narrow band reception only and accessed as a standard USB sound device. I do not quite understand how 96 Ksamples/sec yields 80 KHz though: Q. What is the bandwidth? A. 96kHz is the quadrature sampling rate. Once the ADCs decimation filter skirts have been taken into account, you have about 80kHz. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] DTV tuner chip usable for GPS front end?
http://www.funcubedongle.com/ but perhaps not fast enough for you. Or not wide enough in this case. The FunCube technical FAQ says the bandwidth is about 80 KHz as it is designed for narrow band reception only and accessed as a standard USB sound device. I do not quite understand how 96 Ksamples/sec yields 80 KHz though: Q. What is the bandwidth? A. 96kHz is the quadrature sampling rate. Once the ADC's decimation filter skirts have been taken into account, you have about 80kHz. .. because they are quadrature samples, so it's +/- 40 KHz. In fact some of the software driver the device at 192 KHz, yielding almost enough bandwidth for FM stereo (but not quite). +/- 80 KHz RF, about 80 KHz baseband. Cheers, David -- SatSignal software - quality software written to your requirements Web: http://www.satsignal.eu Email: david-tay...@blueyonder.co.uk ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] DTV tuner chip usable for GPS front end?
On 3/21/12 9:17 AM, beale wrote: I suppose there is limited interest in homebrew GPS receivers given how cheap the fully integrated chipsets are. However, just noticed the below tuner chip intended for DTV, actually lists GPS L1 as an applicable frequency. A TV Tuner USB stick using this chip is available for $20, and some SDR type software is apparently working with it: http://sdr.osmocom.org/trac/wiki/rtl-sdr Has anyone here played with this device? from http://www.elonics.com/product.do?id=1 The E4000 is a highly integrated multi band RF tuner IC implemented in CMOS, ideal for low power digital terrestrial TV and radio broadcast receiver solutions. The E4000 contains a single input LNA with RF filter, whose centre frequency can be programmed over the complete frequency range from 64MHz to 1700MHz. Isn't that what they're using in the FunCubeDongle? ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
