The FLEX-x000 has a hot front end. If your radio is exposed to strong signals from BCB stations, the mixing products can show up on 160 and 80m. If you have the preamp turned on for 160 and 80m, you should turn it off. If that helps some, then you probably are going to need a BCB filter (I recommend the ones from ICE).
I had the same problem from a local Hispanic AM radio station showing up on 6m at night when I was using an external preamp ~18 dB). I used a BCB filter to knock out everything below 1.8 MHz and that helped a lot, especially on the top bands. For 6m, I ended up using a very narrow bandpass filter tuned for the bottom of 6m because of other types of interference I was getting on that band. -Tim -----Original Message----- From: Burt [mailto:k1...@yahoo.com] Sent: Sunday, November 29, 2009 8:53 PM To: Tim Ellison Cc: FlexRadio@flex-radio.biz Subject: Re: [Flexradio] Possible Bug.. I have the bug on 3.885 and 1.885, I believe there are IN the ham bands --- On Sun, 11/29/09, Tim Ellison <telli...@itsco.com> wrote: > From: Tim Ellison <telli...@itsco.com> > Subject: Re: [Flexradio] Possible Bug.. > To: "Anthony Martin" <anth...@consultexcel.com.au>, > "FlexRadio@flex-radio.biz" <FlexRadio@flex-radio.biz> > Date: Sunday, November 29, 2009, 8:46 PM No, they are not bugs. The > FlexRadios have filtering optimized for the ham bands not for the > general RX. You will need to use a filter or preselector for those > frequencies. > > http://kc.flex-radio.com/KnowledgebaseArticle50352.aspx > (See RX Frequency range) > > If your Preamp is not making any change to the noise floor when it is > used in the ham bands, then you need to contact FlexRadio support so > they can help you run the Preamp test and triage the issue. > > > > -Tim > > -----Original Message----- > From: flexradio-boun...@flex-radio.biz > [mailto:flexradio-boun...@flex-radio.biz] > On Behalf Of Anthony Martin > Sent: Sunday, November 29, 2009 7:51 PM > To: FlexRadio@flex-radio.biz > Subject: [Flexradio] Possible Bug.. > > Hi Guys, > > > > I'm not sure if this is by design or a bug.. > > > > 2 Receivers side by side. The Flex3000 and a IC7000 - Listening to > some navigational beacons clear as day on the 7000 (Below 500Khz). On > the flex however it seems to go crazy. You can hear AM broadcasts that > are not really there (unless the frequency displayed is completely > wrong??) but you also at the same time hear the beacons.. > > Kind of hard to explain but its not right. Kind of a mash up of > frequencies. > > > Ive also noticed similar occurances above 30mhz where I know some > signals are (I can hear on another receiver at the same time) yet > nothing on the flex 3000. > > > > I have also noticed no difference whatsoever with > ATT/ON/PRE1/PRE2 enabled - the panadapter levels change marginally but > no audible difference at all. > > > > Are these bugs?? > > > > > Cheers, > > Anthony > > > > _______________________________________________ > FlexRadio Systems Mailing List > FlexRadio@flex-radio.biz > 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/ Message delivered to telli...@itsco.com > > _______________________________________________ > FlexRadio Systems Mailing List > FlexRadio@flex-radio.biz > 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/ > Message delivered to k1...@yahoo.com > _______________________________________________ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz 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/ Message delivered to arch...@mail-archive.com
