I moved my 160 inverted L to a tall tree in my backyard to get more vertical
height. The vertical leg is now about 65 feet and the rest (65feet) is
horizontal. I fed this one with about 125 feet of 75 ohm coax just because I
had lots of it laying around. No tuners, baluns, ununs or chokes in
It sure IS broadbanded. Couple of questions:
On Thu, Nov 20, 2014 at 10:11 AM, Joe Galicic gali...@comcast.net wrote:
The ground is connected to the existing ground system for the old L.
Can you describe this?
I get a 1.1 SWR reading from 1.8 to 1.9 before it moves up to 1.3 and
slightly
@contesting.com
Sent: Thursday, November 20, 2014 11:17:16 AM
Subject: Re: Topband: Broadband Inverted L
It sure IS broadbanded. Couple of questions:
On Thu, Nov 20, 2014 at 10:11 AM, Joe Galicic gali...@comcast.net wrote:
The ground is connected to the existing ground system for the old L.
Can
Joe:
Don't ask questions and just enjoy the antenna's performance.
73 de
Gene Smar AD3F
On 11/20/14, Joe Galicic wrote:
I moved my 160 inverted L to a tall tree in my backyard to get more vertical
height. The vertical leg is now about 65 feet and the rest (65feet) is
, and attach to the previous ground system
too.
73
Lloyd - N9LB
-Original Message-
From: Topband [mailto:topband-boun...@contesting.com]On Behalf Of Joe
Galicic
Sent: Thursday, November 20, 2014 11:11 AM
To: Mike Waters
Cc: List, TopBand
Subject: Re: Topband: Broadband Inverted L
Mike
On Thu,11/20/2014 9:25 AM, Gene Smar wrote:
Don't ask questions and just enjoy the antenna's performance.
A low SWR is NOT an indicator of an antenna's performance. It only
indicates a match to the transmission line.
In this case, the low SWR suggests that the antenna is highly resistive.
Joe posted,
I moved my 160 inverted L to a tall tree in my backyard to get more
vertical height. The vertical leg is now about 65 feet and the rest
(65feet) is horizontal. I fed this one with about 125 feet of 75 ohm coax
just because I had lots of it laying around. No tuners, baluns, ununs
Have you considered elevated radials? Four of them 10' high (or even two!)
would be MUCH better than what you have right now.
My 160m Inverted-L:
http://www.w0btu.com/160_meters.html#inv-l_antenna
73, Mike
www.w0btu.com
_
Topband Reflector Archives -
foot high wooden
privacy fence. Can I lay down radials more over top of the old ones?
- Original Message -
From: Mike Waters mikew...@gmail.com
To: List, TopBand topband@contesting.com
Sent: Thursday, November 20, 2014 1:23:32 PM
Subject: Re: Topband: Broadband Inverted L
Have you
, TopBand topband@contesting.com
Sent: Thursday, November 20, 2014 2:12:28 PM
Subject: Re: Topband: Broadband Inverted L
Thanks everyone ! Interesting. I knew something was not quite right. I thought
I could tap into the existing ground system but obviously that is not going
to be the case. I could
Ground systems cannot be evaluated or estimated by number of feet of wire,
just like they cannot be evaluated by SWR or bandwidth, but I'm sure we all
agree on this..
The single most important thing Joe said was:
The antenna feed point terminates at a four foot ground rod and then I
am
Subject: Re: Topband: Broadband Inverted L
Ground systems cannot be evaluated or estimated by number of feet of wire,
just like they cannot be evaluated by SWR or bandwidth, but I'm sure we all
agree on this..
The single most important thing Joe said was:
The antenna feed point
Exactly what I thought ... any way to slope the leg of the L to get it
at the junction of the redials?
de ns9i
On 11/20/2014 1:17 PM, Tom W8JI wrote:
Ground systems cannot be evaluated or estimated by number of feet of
wire, just like they cannot be evaluated by SWR or bandwidth, but I'm
On Thu,11/20/2014 11:17 AM, Tom W8JI wrote:
Joe's antenna virtually doesn't have a ground connection to radials at
all, and this has almost nothing to do with the number of radials or
type of radials.
Yes, but there's another important concept that is being missed here.
The function of a
A few years ago I put up a temporary 60 foot vertical over
my 230 foot diameter ground screen. It was top loaded with 2
umbrella wires sloping down. The bandwidth was MUCH
narrower than your 65 foot vertical. IIRC, the 3:1 VSWR
bandwidth was less than 50 kHz. The feedpoint impedance
was about
a
lot! Mine was about 75 feet!
73,
Charlie, K4OTV
-Original Message-
From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of Joe
Galicic
Sent: Thursday, November 20, 2014 2:12 PM
To: Mike Waters
Cc: List, TopBand
Subject: Re: Topband: Broadband Inverted L
Thanks everyone
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