[Flexradio] Benefit of dual receive

[Edwin Marzan]

The minute that becomes possible there will be no excuse for not purchasing an SDR.l What a great idea!Edwin MarzanAB2VW> From: nu6x at esedona.net> To: dmb at lightstream.net; cmsande at gmail.com> Date: Thu, 1 May 2008 08:12:55 -0700> CC: FlexRadio at flex-radio.biz> Subject: Re: [Flexradio] Benefit of dual receive> > I have a large noise source from my neighbor's electric fences. It would> sure be nice to use the Second RX with a separate dedicated antenna> close to my noise source and then subtract this from the main receiver> with software.> > Mark NU6X Sedona, AZ > > -----Original Message-----> From: flexradio-bounces at flex-radio.biz> [mailto:flexradio-bounces at flex-radio.biz] On Behalf Of Dale Boresz> Sent: Thursday, May 01, 2008 7:39 AM> To: Craig Sande> Cc: FlexRadio at flex-radio.biz> Subject: Re: [Flexradio] Benefit of dual receive> > Craig,> > I'm experimenting with small hi-Q receiving loops, as a way to increase > my signal-to-noise ratio on 40m through 160m. I have several local noise> > sources that have been causing problems, and I'm hoping to be able to > eliminate or significantly reduce the noise by nulling it out with the > deep null broadside to the vertical loop.> > The second RX will be a huge help in this effort, since I can > simultaneously monitor the same band and frequency using two different > antennas: the receiving loop, and the transmitting antenna. Also, the > extreme high-Q of the loop provides a bandwidth at the -3dB point of > only about 6 KHz, so my 'vision' of the band on the panadapter while > using the loop will deteriorate rapidly either side of the current > frequency, but I'll still be able to see the band on the TX antenna > using the primary receiver as usual.> > I should also be able to examine and optimize the Q of the loop by using> > the panadapter as a spectrum analyzer to show the shape of the passband > with just normal band noise.> > 73, Dale> WA8SRA> > > > Craig Sande wrote:> > I may seem a little slow, but would like to know how others plan to> use the> > new dual receive capabilities? I have the Flex-5000 and am> considering the> > second receiver, but would like to know how it will benefit me. Is> this> > just a contesting-oriented option, or am I overlooking other ways to> utilize> > the extra receiver.> >> > Thanks,> >> > Craig, AE7I> > _______________________________________________> > FlexRadio Systems Mailing List> > FlexRadio at 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://kb.flex-radio.com/ Homepage:> http://www.flex-radio.com/> >> >> >> > > > > _______________________________________________> FlexRadio Systems Mailing List> FlexRadio at 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://kb.flex-radio.com/ Homepage:> http://www.flex-radio.com/> > No virus found in this incoming message.> Checked by AVG. > Version: 7.5.524 / Virus Database: 269.23.6/1407 - Release Date:> 4/30/2008 11:35 AM> > > No virus found in this outgoing message.> Checked by AVG. > Version: 7.5.524 / Virus Database: 269.23.6/1407 - Release Date:> 4/30/2008 11:35 AM> > > > _______________________________________________> FlexRadio Systems Mailing List> FlexRadio at 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://kb.flex-radio.com/ Homepage: http://www.flex-radio.com/> 
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