My trials and tribulations

Hi all ,this blog is going to show some of the tricks in my life ,Enjoy !

Sunday 9 September 2012

L matching

Well after much pratting around with this antenna setup ...trying to match the wrong  antenna i finaly worked out a network to make this vertical work on 80 and 40 m.By making the antenna longer on 80 to get the 50 ohms i had made it 5/8ths on 40 hence the previous network not working.
 Anyhow this is what i ended up with


Swr on 80 is 1.3 from 3640 upto 1.6 at top of band 40m is 1.2 for most of band rising to 1.5 at its highest so swr wise it seems ok .The large coil on the right  i ,maybe, could do with out but it seems to lower the Q some what and give a little more bandwidth ,also a dc ground .Well time will tell how it performs as we move into dx season for the lower bands.