Guy, We have 11 banks of 11th order filters in the FLEX-5000. These are currently aligned respectively with each of the 11 Ham bands from 160m through 6m. A receive only version, when offered, would repurpose some of those filter banks for longwave and MW reception. For example, we would use the 12m slot for lower frequencies and combine 10/12m on one filter. We can do the same with 17/15m, etc. Gerald
Gerald Youngblood, K5SDR FlexRadio Systems Ph: 512-535-4713 Fax: 512-233-5143 Email: [EMAIL PROTECTED] Web: www.flex-radio.com > -----Original Message----- > From: Guy Atkins [mailto:[EMAIL PROTECTED] > Sent: Wednesday, July 11, 2007 11:04 PM > To: 'Gerald Youngblood' > Cc: flexradio@flex-radio.biz > Subject: RE: [Flexradio] Receive-Only SDR (was: Manual notch filter?) > > That's encouraging news, Gerald. Thanks for mentioning your > tentative plans for a receive-only model again. > > Please give consideration to onboard low pass filters for > longwave and medium wave. They probably wouldn't need to have > as many poles of filtering as mine do. I have three separate > LP filters for longwave, lowband MW, and highband MW; but > appropriate switching could be built into PowerSDR. Mine are > manually switched via relays on the inputs & outputs, but > it's a small price to pay for the benefit they provide on > LW/MW. These take care of the odd harmonics issue > wonderfully, and are the key to hot performance with the SDR > (and presumably new Flex models) below 160 meters. > > Guy KE7MAV > > > -----Original Message----- > From: Gerald Youngblood [mailto:[EMAIL PROTECTED] > Sent: Wednesday, July 11, 2007 6:39 PM > To: 'Guy Atkins'; 'Jim Dunstan'; flexradio@flex-radio.biz > Subject: RE: [Flexradio] Receive-Only SDR (was: Manual notch filter?) > > > Guy, > Actually, we will consider a receive only version after we > get the A, C, and > D models as well as the second receiver into full production. > For that > version, we can sacrifice some of the ham band optimized > filters in return > for the use on the low bands. It would still give general > coverage on HF > through 6m. Gerald > > Gerald Youngblood, K5SDR > FlexRadio Systems > Ph: 512-535-4713 > Fax: 512-233-5143 > Email: [EMAIL PROTECTED] > Web: www.flex-radio.com > > > _______________________________________________ FlexRadio mailing list FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ FlexRadio Knowledge Base: http://kb.flex-radio.com/ FlexRadio Homepage: http://www.flex-radio.com/
