Don, I am using the same vertical (although I am using the CG-3000 remote tuner at the base.) Based upon my understanding, it's probably a limit of the ATU in the F3K. . My take is that the ATU in the F3K works well, but it won't do like some of the external tuners that can "tune a wet noodle," nor was the ATU in the F3K intended to perform as such.
Dumb question from me, just to check something - are you using the correct un-un network at the base of the vertical? This has been the subject of extensive discussion on some of the Yahoo groups. Without the un-un or with the wrong one, the SWR will be fairly high and only a heavy-duty external tuner would handle it. If you hit the TUNE button in PowerSWR (with reduced power out of 10 watts), what kind of SWR does the PowerSDR show? Mark Lunday WD4ELG [email protected] http://wd4elg.net -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Don Sachnoff Sent: Tuesday, July 21, 2009 9:58 PM To: [email protected] Subject: [Flexradio] 3k ATU Question I finally got around to setting up the 3k and trying it out. I noticed on 40m when I press the ATU the 3k goes into transmit for a second and then drops out and the BYP stays on indicating the ATU cannot match. The tuner appears to work on 20m. The antenna is a ground mounted zerofive 43' tall with 20 radials. I am somewhat surprised as I am able to use a LDG AT-100Pro and it tunes without issue. Could I be missing something here or is it just the limitation of the ATU? Don - kx9q _______________________________________________ FlexRadio Systems Mailing List [email protected] 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 [email protected] _______________________________________________ FlexRadio Systems Mailing List [email protected] 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 [email protected]
