--- In [email protected], "Andrew O'Brien" <[EMAIL PROTECTED]> wrote: > > Had some antenna problems this weekend , so took the wires down and > today astily made a rotating dipole for 20M. I made it out of scrap > aluminum tubing , mostly scavaged from old antennas that I find at > yardsale or hamfests. > > Currently it is only up at 20 feet but increased WWV's 15Mhz signal > from S6 to 10 over 9 (comparing with the R7 vertical).
Just an update, I may tinker with it and turn it into a half-square antenna rather than a dipole. However, despite making many dipoles over the years, I usually have a adjustment or two to make the SWR good on the chosen band. Some have had horrible SWRs despite being cut for specfic frequencies. The radio/antenna Gods must have been smiling on me when I made the aluminum tubing dipole in 30 minutes during the snow last week. I just checked the SWR today for 20M (I use an antenna tuner so much that I forgot to try my antenna without the tuner last week) I was shocked to find that it is close to "perfect" as I can get it on 14.05 well under 1:5 up to 14.155 and stays well under 2:1 for the remainder of the band, no tuner needed on the entire 20M band at all. It goes slighlty above 2:1 at 14.498 ! I did not know my rig would xmit that far up 20M. Antenna gurus, would the broadbanded nature of this dipole be related to the diameter of the tubing? I don't recall getting this broadbanded with 14 gauge wire. I bet I could make 100 new dipoles and never get that lucky again. Maybe it is true what they say about putting up antennas in snow storms. K3UK DX Cluster via telnet://cluster.dnyalias.org Other K3UK-CARC Groups DIGITALRADIO Group http://groups.yahoo.com/group/digitalradio/ MixW Group http://groups.yahoo.com/group/themixwgroup/ Unsubscribe this group via [EMAIL PROTECTED] Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/carcomm/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
