Steve, Thank you very much for responding to my questions; I just wanted to compare the two hardware models on a HF basis excluding the diversity setup and oscillators. I know all of you are quite busy at this point and I am extremely excited to be in the queue with an order placed (6500 & all extras). I also placed an order for the GPSDO option. I believe in future software upgrades the GPSDO will provide a new gateway of options to say the least. As you can tell I am really excited about this.
Thanks and 73's, Joe > Joe, > > You've mentioned the only hardware differences in the two radios already. > At this point, our goal is to place the same performance code in the FPGA > of each radio -- one radio just has more slice receivers. Moving forward, > it is possible that with more resources in the 6700 that more performance > of some kind or another might be achieved, but in general the receivers > will perform the same. > > Incidentally, with respect to the oscillators in the two radios, there are > two key performance factors: Frequency stability and phase noise. The > former affects just what it indicates: your frequency stability. There is > a difference in the two radios here. The 6500 has a TCXO and the 6700 an > OCXO from the factory (specs on the data sheet). The OCXO is, of course, > a > more stable reference and can be added to the 6500. From a receive > performance perspective, however, the two have identical phase noise and > so > they will perform similarly. The phase noise is not set in the TCXO/OCXO, > but in the master oscillator running just shy of 1 GHz. > > The short answer is that the radios have the same performance. > > Steve > > Stephen Hicks, N5AC, AAR6AM > VP Engineering > FlexRadio Systems™ > 4616 W Howard Ln Ste 1-150 > Austin, TX 78728 > Phone: 512-535-4713 x205 > Email: [email protected] > Web: www.flexradio.com > > > > *Tune In Excitement™* > PowerSDR™ is a trademark of FlexRadio Systems > > > > > On Thu, Jul 19, 2012 at 1:59 PM, <[email protected]> wrote: > >> If you had a 6500 and a 6700 on the same antenna and on the same >> frequency >> (HF Band Only as this is the range for the 6500); are both units equal >> in >> specification ability (MDS, IP3, Dynamic Range, etc.)? I ask this >> because >> I know there is some hardware difference between the two regarding the >> FPGA. From what I understand the SCU's are equal except for the second >> preamp in the 6700 which I figure would be used in the VHF range (6700 >> Only). I do realize there also is a different oscillator tolerance >> between >> the two. Thanks for answers on this. >> >> Thanks, >> Joe >> WD5Y >> >> >> _______________________________________________ >> Flexedge mailing list >> [email protected] >> http://mail.flex-radio.biz/mailman/listinfo/flexedge_flex-radio.biz >> This is the FlexRadio Systems e-mail Reflector called FlexEdge. It is >> used for posting topics related to SDR software development and >> experimentalist who are using beta versions of the software. >> > _______________________________________________ Flexedge mailing list [email protected] http://mail.flex-radio.biz/mailman/listinfo/flexedge_flex-radio.biz This is the FlexRadio Systems e-mail Reflector called FlexEdge. It is used for posting topics related to SDR software development and experimentalist who are using beta versions of the software.
