Great suggestion Tim. However, the noise is still high. I guess that means the HRFIO board is okay, which is a good thing.
I just downloaded SDR 2.1.15. This required me to completely uninstall 2.2.2. Still the noise levels were as high as I reported below. I just disconnected all of the cables from the 5K except power, the antenna & FireWire. Still high. I am next going to run the 5K off the same power source as the IC735. Thanks for you help, -Seve KM6XX On Sep 5, 2011, at 1:40 PM, Tim Ellison, W4TME wrote: > Steve, > > Try the RX1 In port and see if there is a difference. If it is OK, then it > is probably the HRFIO board. A simple field installable swap if the VU is > not installed. > > -Tim > --- > Tim Ellison, W4TME > Product Management, Sales & Support > FlexRadio Systems^(TM) > 4616 W Howard Ln Ste 1-150 > Austin, TX 78728 > Phone: 512-535-4713 Ext. 223 > Email: [email protected] <mailto:[email protected]> > Web: www.flexradio.com <http://www.flexradio.com> > > logo > /Tune In Excitement^(TM) > PowerSDR^(TM) is a trademark of FlexRadio Systems/ > > > On 9/5/2011 3:57 PM, Steve Cabral wrote: >> Al- >> Thanks for the KB article. I use spectrum analyzers in my work, so it makes >> a lot of sense. >> >> Unfortunately it doesn't help explain why I am seeing such a big difference >> in noise level between my IC735 and the Flex 5K. Even by narrowing the BW >> of the flex down to 1.0K and adjusting the AGC-T, I cant achieve a noise >> level lower than S5.5. My IC 735 has a more pleasant listening experience >> right now with a S1-S2 noise level. >> >> On rare occasions when the front end of a spectrum analyzer was damaged, we >> noticed the noise level would go up significantly. I think I may give Flex >> a call to see if there is a way to determine if it is damaged. >> >> Thanks again, >> -Steve >> KM6XX >> >> On Sep 4, 2011, at 3:36 PM, a.groff wrote: >> >>> Steve, >>> I think what you are seeing is normal for the the Flex.. It's different >>> than most radios.. See the first half of this flex Knowledge Center >>> artical . >>> http://kc.flexradio.com/KnowledgebaseArticle50144.aspx?Keywords=noise+level >>> >>> AL, K0VM >>> >>> >>> >>> On 9/4/2011 4:04 PM, Steve Cabral wrote: >>>> Has anyone experienced a high noise level from their flex compared to >>>> other radios in the shack? >>>> >>>> I'm running a Flex 5K (with 2nd RX and ATU, but they are off or bypass), >>>> SDR 2.2.2. I am seeing about a S8 level of noise with the preAmp off and >>>> a S6 with the preAmp on. This seams backwards to me as my ICOM735 raises >>>> the noise level when I switch the preAmp on. For reference, the AGC-T is >>>> 99, NR on, 14.200MHz SSB with a BW of 2.4K. >>>> >>>> If I move the antenna coax to my ICOM 735 the noise level is S1 with the >>>> preAmp off. >>>> >>>> Any ideas? >>>> >>>> -Steve >>>> KM6XX >>>> >>>> _______________________________________________ >>>> 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. > _______________________________________________ > 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.
