On 4/13/07, Alan NV8A <[EMAIL PROTECTED]> wrote: > On 04/13/07 11:04 am Jim Lux wrote: > > >> The Flex models are in a league all of their own for factory > >> ready transceivers. The traditional "big 4" models are all > >> still just traditional radios with computers in them. > > > > Not entirely true.. my IC7000 does a lot of the same things that > > PowerSDR does, in software.. True, it uses a different LO synthesis > > scheme (PLLs and DDSes, rather than a single DDS) and a different IF > > chain (several conversions, instead of one), but that's more to > > address the wide tuning range needed... if you put a DEMI converter > > on the front of a SDR1000 to get 2m, you've built yourself a double > > conversion receiver. Strip out the VHF,UHF, Wideband FM, and TV > > functions of the IC7000 and you'd have an architecture that's quite > > similar to the SDR1000. > > > > But, in terms of UI management method(software in both IC7000 and > > PowerSDR) and baseband signal processing (DSP in both IC7000 and > > PowerSDR, both of an "IF" that's in the 10-20 kHz range) they're the > > same. Neither radio is an instance of the "computer turning the knobs > > of a conventional analog rig" model (e.g. my old FT757) > > > > Probably the single biggest difference between the two is that you > > can't change the software in the IC7000, because it's got equipment > > authorization and the FCC won't allow it to be changeable to keep that auth. > > > Both the Icom IC-7800 and the Kenwood TS-2000 have user-upgradeable > firmware, so why couldn't the IC-7000? (Others have mentioned the > Ten-Tec models) > > 73 > > Alan NV8A >
Could it be the difference is that they don't provide enough information to actually write your own firmware for those radios? I mean if you can't write the firmware yourself, you cannot change the way the radio behaves ( ...that is, those things determined by the firmware). Phil N8VB _______________________________________________ FlexRadio mailing list [EMAIL PROTECTED] http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ FlexRadio Knowledge Base: http://kb.flex-radio.com/ FlexRadio Homepage: http://www.flex-radio.com/
