Dear FLEX-5000 customers, There has been some discussion today about an ECO that addresses a potential spur issue on 160m CW on the FLEX-5000. We have developed a hardware modification to the 160m transmit filter section in response to a half dozen customer reports of a spur 2.4 kHz above the CW transmit frequency.
This is only an issue if the station is running "legal limit" power CW on 160m with very large antenna arrays. In the "legal limit" case the CW spur would still be only on the order of 6 mW (we have measured approximately -53 to -57 dBc), which might be heard by other similar "big gun" stations with quiet antennas. On 160m SSB or AM it is really a non issue. For new production radios starting around December 2010 with Rev Q or higher HTRX boards, the modification is installed on all new radios. We only install this ECO into existing radios upon specific request because in our opinion it affects so very few people. If you fit this operating criteria, we are happy to install the ECO. The deal is that you pay for shipping both ways and we will do the mod. Contact support at supp...@flexradio.com or 512-535-4713 x210 to request an RMA. Please DO NOT send your radio without an RMA. Please note that turn around could be up to three weeks for the ECO. Regards, Gerald Gerald Youngblood, K5SDR President and CEO FlexRadio Systems(TM) 13091 Pond Springs Road, #250 Austin, TX 78729 Phone: 512-535-4713 Ext. 202 Email: ger...@flexradio.com Web: www.flexradio.com <http://www.flex-radio.com/> Tune In Excitement (TM) PowerSDR(TM) is a trademark of FlexRadio Systems _______________________________________________ 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/