Price, I have to disagree with your "theory" based on my practical experience
with
inverted Vs on 160 used over the past 11 years.
In 1985 I put up an inverted V @ 52 feet. The ends were 15 ft. above ground.
As ON4UN
said, I worked some DX, including VK, ZL, many EU etc.
Then, in 1994, I installed an inverted V on my new tower @ 134 ft. The ends @
95 ft (or
so). Now I work all kinds of DX, break most pileups, in the contests and
otherwise. As
ON4UN says, I have a good antenna.
My inverted Vs on 160 sure have worked well over the years. I have never used
an
inverted L, so I am not saying anything (good or bad) about them, just giving
my opinion
on inverted Vs.
In fact, this antenna works so well, I've received comments from 160M regulars
that I
shouldn't consider a change.
73!
Bill, N3RR@EROLS.COM
>Harold Smith wrote:
>
> I see a lot of discussion about an inverted V on 160.
>
> Think about this. If you had a dipole on 160 at 50ft ( an inverted V would
> be impossible at that height ), It would perform about the same as a dipole
> on 20 meters at 6.25 ft. There would be no vertical radiation to speak of.
> To make it a true inverted V on 160 it would have to be at least 265 ft up !!
>
> This is why inverted Ls and verticals are the best choice for DX.
>
> I have 80 ft of 45G Rohn tower with a 5el 46ft boom on 20mtrs at 80 ft, 3 el
> 15mtr yagi at 90 ft and 3 el 10mtr yagi at 100 ft. I shunt feed the tower
> using an Omega match
> with 2- 500pf 10Kv vacuum var caps. The tower sits 4 ft from my 18 x 36 ft
> in- ground pool and the pool ground system is connected to the base of the
> tower.
> this gives about 900 sq. ft of counterpoise. This is used only on 160 and it
> gets out very well. It is too long for 80 mtrs. It works out to be a 1/4
> wave length at 1.833 Mhz. The vswr at 1.830 is 1.0:1. My lot size is 90 ft X
> 140 ft, so I have no room for beverages. If my line noise wasn't S-8 to
> S-9+10db, I would have over 200 countries on Top-Band. I have 132 wrkd and
> 129 conf.
>
> By the way, I have had this tower up 30 years and no problem with the joints
> between the sections. I use 6700lb Philistrand for guys. Up until 3 years
> ago I had steel guy wire with insulators at the tower and the guys insulated
> every 10 to 20 feet. When I change to Philistrands the Omega tuning did
> change a bit.
>
> If you have no room for radials, tie everthing you can find together for a
> ground (water system, ground rods, swimming pool ground and what ever is
> available).
>
> Also, there is no miracle Rx antenna, if you have noises from multi
> directions, which I do.
>
> I hope this might be of some help.
>
> Price W0RI
>
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