|Subject:||[TowerTalk] 80 meter vertical|
|From:||"Wally Klinger" <firstname.lastname@example.org>|
|Date:||Sat, 20 Nov 2004 16:18:08 -0600|
I am in the process of reworking my 80 meter ground mounted vertical. It started out life as an HF2V. Last year I put a capacity hat on it and saw some improvement. This fall, I decided to rebuild it. I made it into a 33 foot vertical, sans the coils and cap that are normally 3 or 4 feet above the base. I took a 33 foot piece of wire and attached it to the top of the vertical. I ran the wire up to the top of my 70 foot tower on a 35-40 degree angle about 50 feet east of the vertical. There is an insulator and about 40 feet of rope separating the tip of this "bent vertical" from the top of the tower. The vertical is sitting on 55-60 radials from 33 to 135 feet in length tacked below my sod.
The antenna is not resonent as I hoped. I get an SWR of 1.1 at 3.7 Mhz, but with my tuner I can flatten it out where I want it. I can not get it to load on 160 at all even with the tuner...... I get down to 8.0 to 1 on the 259 at the lowest point on 160.
Has anyone ever done something like this before? A "bent" 66 foot vertical? Should it exhibit a low angle of radiation, or did I build a cloudwarmer? Any ideas on improving it? Theoretically, will it be directional or lobed in a particular direction? Any ideas on capacitive or inductive loading at the base to gain a little 160 use? I simply strapped over the fiberglass insulator that formerly separated the coil. Heck, I can even come up with a vacuum variable at this point.... What do I gain?
Yup, it is still noisy, but I will take Phil's advice and mitigate this with a K9AY loop that I am working on in the garage. That is tomorrow's project..... Ran outta daylight :)
Any ideas you guys might have would be appreciated.
73--Wally Klinger W9BEA
Express yourself instantly with MSN Messenger! Download today - it's FREE! hthttp://messenger.msn.click-url.com/go/onm00200471ave/direct/01/
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions and ask for Sherman, W2FLA.
_______________________________________________ TowerTalk mailing list TowerTalk@contesting.com http://lists.contesting.com/mailman/listinfo/towertalk
|<Prev in Thread]||Current Thread||[Next in Thread>|
|Previous by Date:||Re: [TowerTalk] Foundation Bolts - HDX-589 & US Tower CustomerService., EL34GUY|
|Next by Date:||RE: [TowerTalk] Welding Aluminum Tower, Bob Kellow, W5LT|
|Previous by Thread:||Re: [TowerTalk] Foundation Bolts - HDX-589 & US Tower CustomerService., EL34GUY|
|Next by Thread:||Re: [TowerTalk] 80 meter vertical, RCARIELLO|
|Indexes:||[Date] [Thread] [Top] [All Lists]|