The conceptual model is like you have N tunable block converters (200kHz wide in the case of the F5K), followed by M software radios that tune within the band converted. And, there are constraints on where you can tune the block converter for spur purposes. So the general process, given you want to tune the combination to a particular frequency is:
Determine best block converter frequency Set block converter to that frequency Calculate offset from block converter center to desired center Set software receiver to that. It gets tricky when you have multiple software receivers and you want to "optimally" allocate them across a block converter. Unless you do a strict hierarchy to make it easier (main and subrx model).. On 3/19/09 11:26 AM, "Simon (HB9DRV)" <[email protected]> wrote: Hi Tim and Jim, Thanks - now I know :) For my own education I want to write a SDR console, I'm justr working out the base requirement. Simon Brown, HB9DRV www.ham-radio-deluxe.com ----- Original Message ----- From: "Tim Ellison" <[email protected]> Only the FLEX-5000 has the ability to have two ultra high performance fully independent (physical) receivers. The FLEX-3000 and FLEX-1500 have only one physical receiver (but have the capability for an additional "watch" receiver). PowerSDR provides for one additional "watch" receiver (on VFO B) that you can tune in the same sampled bandwidth as the physical receiver. Like Dual Watch in Icom radios. _______________________________________________ FlexRadio Systems Mailing List [email protected] http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ _______________________________________________ FlexRadio Systems Mailing List [email protected] http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/
