I have two SDR1000 and have observed side band splatter on the built in PSDR pan adapters. They are significantly suppressed and of course the built in pan adapters are capable of capturing infiltrating signals that may or may not be actually delivered to the antenna port.
In any case, there was a suggestion included in the original post that seems not to be taken by those that have responded...namely to keep the ALC down. I use the digital modes and the waterfall display all the time. Overdriving the required power and a freely running ALC are clearly evident from many users, but I don't see any feedback (e.g. criticism) to these operators, be they using a SDR or a conventional radio. With an FLEX SDR, it is easy to see how good or bad your signal looks, even though it is not a calibrated measurement. Minimizing the TX bandwidth filters also seem to clean up the sidebands on both the digital (AFSK) and SSB. John -----Original Message----- From: FlexRadio [mailto:flexradio-boun...@flex-radio.biz] On Behalf Of Ian Scoble Sent: Wednesday, April 23, 2014 9:55 AM To: flexradio@flex-radio.biz Subject: Re: [Flexradio] Flex radios are the worst polluters ?? I don’t usually want to get involved in this type of argument but I have to say for the few contacts that are made on the microwave bands in comparison to what are usually made on HF I really don’t see this as an issue also by the fact that you are using dishes with very small beam widths again it’s a non issue. You also ran the flex 1500 with no problem until you read the article it was only then that it came relevant. Ian On 23/04/2014 10:42, "Kjeld Bülow Thomsen" <oz...@mail.dk> wrote: >The article about broadband noise from the Flex radios was published in >the DUBUS Magazine 3 -2013. I was a long time waiting for a official >response from Flexradio. As nothing happened I contacted Flexradio and >got the same information from Tim Ellison: Yes, we agree upon SM5BSZ�s >measurement but this broadband noise is in our opinion but a practical >problem. If it is, buy a Flex 6000. SM5BSZ has in his article proposed >a solution to minimize the problem, but this seems not to have any >interest at Flexradio. > > > >I�m an active microwaver. Until I got this message I used 2 Flex 1500 >with transverters and PA�s to 1,3 ?47 GHz. On some bands I use maximum >legal power and dish antennas. Under good propagation conditions I can >raise the noise floor at UK stations 600 km away across the North Sea. >That is not OK even if the radio meets US standard. That�s too bad. > > > >This arrogant attitude to the problem has forced me and other >microwavers to go for radios not suffering from this problem, f. ex KX3 >or ANAN. My 2 Flex >1500 are now collecting dust on the shelf. > > > >Vy 73 de OZ1FF - Kjeld > > > >Phone/SMS +45 4021 1119 > >Skype oz1ff-1 > > > > <mailto:kj...@oz1ff.dk> mailto:kj...@oz1ff.dk > > <http://www.oz1ff.dk/> http://www.oz1ff.dk > > > >_______________________________________________ >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.flexradio.com/ Homepage: >http://www.flexradio.com/
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