[Antennas] Ham stick dipole

cboone at earthlink.net cboone at earthlink.net
Wed Jun 13 16:34:19 EDT 2007


When you tuned each separate Hamstick, what was making up the other half of the dipole?? When you attached the other Hamstick, it is much shorter and reactive compared to a full size element....so yes, you do need to retune....your antenna has changed and thus resonance has changed too.
Also expect this vertical dipole (why not make a ground place instead if you can...) to radiate less efficient than a single Hamstick over a decent ground plane.

Chris
WB5ITT

-----Original Message-----
>From: Frederick <frederick at my180.net>
>Sent: Jun 13, 2007 2:52 PM
>To: antennas at mailman.qth.net
>Subject: [Antennas] Ham stick dipole
>
>Hi
>     Wanting to build a vertical dipole the quick and easy way, I bought a 
>pair of 75 meter hamsticks and the matching dipole bracket. I used a noise 
>bridge and SWR meter and tuned each hamstick to be resonate just above 3.9 
>MHz. When I then mounted both antennas on the bracket the resonate frequency 
>dropped to 3.4 MHz. Any ideas on what happened? Do I really need to go 
>through the entire tuning process again?
>     Thank you.
>
>God bless,
>Mark
>
>God loves you!
>My ham radio lists.
>http://lists.topica.com/lists/funhamradio.
>http://groups.google.com/group/funhamradio-list
>My personal website
>http://funhamradio.bloki.com 
>
>
>______________________________________________________________
>Antennas mailing list
>Home: http://mailman.qth.net/mailman/listinfo/antennas
>Help: http://mailman.qth.net/mmfaq.html
>Post: mailto:Antennas at mailman.qth.net





More information about the Antennas mailing list