[TowerTalk] C3SS + 17M dipole

VO1HP fdavis at nfld.net
Fri Sep 25 17:15:51 PDT 2009


In  previous posts I had inquired about the rivet of C3SS  elements  in order to setup the antenna for the low end of each band.  The antenna is now erected and pictures can be seen at  the link below.  17M homebrew dipole 5 ft above C3SS and inline with boom.

Antenna pictures....copy and paste into browser:
http://picasaweb.google.com/lh/sredir?uname=crabappleorama&target=ALBUM&id=5385556214635798609&authkey=Gv1sRgCNWUwd-4qNSWUg&feat=email 


For 10 and 15 I have left one hole uncovered in  the tips of the driven elements and the SWR curves are
21.000   1.2
21.100   1.1
21.200   1.1
21.300   1.2

28.000  1.6
28.100  1.5
28.200   1.4
28.300   1.3
28.400   1.2
28.500   1.1

However low end of 20M SWR in 2.1:1.  Have adjusted linear loading closer to the boom and no adjustment room left .
Here are SWR points.  Does this look right??.  Antenna at about 40ft and SWR measured at end fo about 120ft of coax.

14.000    2.1:1
14.050    1.6:1
14.100    1.4:1
14.150    1.1:1
14.200    1.1:1
14.250    1.0:1
14.300    1.0:1

This curve does not look right to me.

Any comments.?

73 Frank VO1HP





More information about the TowerTalk mailing list