[K3CAL] Log Periodic Antenna Project
Steve Hempling
hempling at comcast.net
Thu Jun 25 11:42:46 EDT 2015
http://www.dxzone.com/cgi-bin/dir/jump2.cgi?ID=22835
Here is the link for the 144 - 460 mhz Log Periodic Antenna that I have
built and plan to build some more of....
The construction is hefty...almost 4.6 lbs... mainly due to local
availability of thick wall aluminum box tubing... it is made with 1"
square tubing (2 Booms (4 foot)) and 1/4 " solid Al rod.... seperated by
plexiglass (1/5 " between Booms) with pop rivets.. and yes count-em 20
elements...
I have finished 1 to play with and we checked its performance... < 1.6
SWR thru the 2 meter and 440 band.... 220 band had poorer
performance... with Chip's $$$$1000.00 ish hitec Analyzer.... (who can
argue with an analyzer owned by a ham who sometimes is bigger than
life??) Anyway cost should be about $50 or less... cost just being the
cost of materials... take a look and let me know at next meeting...
here are some pics.... enjoy 73 N3IPN
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