Search String: Display: Description: Sort:

Results:

References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*Topband\:\s+Caged\s+Inv\-L\s+\-\s+Pros\s+and\s+Cons\s+\?\s*$/: 6 ]

Total 6 documents matching your query.

1. Topband: Caged Inv-L - Pros and Cons ? (score: 1)
Author: Dan Bookwalter <n8dcj@yahoo.com>
Date: Tue, 24 Jan 2012 18:29:57 -0800 (PST)
I am considering modifying my Inverted L such that the vertical part (~ 70 ft) is a cage of say 4 wires , purely for bandwidth. Besides BW any Pro's and or Con's to this idea ? my current configurati
/archives//html/Topband/2012-01/msg00297.html (6,711 bytes)

2. Re: Topband: Caged Inv-L - Pros and Cons ? (score: 1)
Author: Jim Brown <jim@audiosystemsgroup.com>
Date: Tue, 24 Jan 2012 20:34:30 -0800
I'm using two #10 stranded copper wires, spaced roughly 6 inches using some old insulators I bought at hamfests as spacers. It roughly doubles the SWR bandwidth. The only downsides are more wind load
/archives//html/Topband/2012-01/msg00298.html (7,819 bytes)

3. Re: Topband: Caged Inv-L - Pros and Cons ? (score: 1)
Author: "Victor A. Kean, Jr." <vkean@k1lt.com>
Date: Tue, 24 Jan 2012 23:45:44 -0500
In exchange for greater bandwidth you get lower radiation resistance which for most systems would translate into slightly lower efficiency. Of course, if the increased bandwidth allows you to avoid a
/archives//html/Topband/2012-01/msg00299.html (7,199 bytes)

4. Re: Topband: Caged Inv-L - Pros and Cons ? (score: 1)
Author: "Bill Wichers" <billw@waveform.net>
Date: Wed, 25 Jan 2012 00:38:27 -0500
My vertical (without toploading) is a 6-wire cage. I used the 18awg insulated copperweld and spreaders I made form aluminum sheet and extrusions. It tunes well, although I can't compare it to a singl
/archives//html/Topband/2012-01/msg00300.html (11,479 bytes)

5. Re: Topband: Caged Inv-L - Pros and Cons ? (score: 1)
Author: "Joe Subich, W4TV" <lists@subich.com>
Date: Wed, 25 Jan 2012 01:16:26 -0500
Modeling indicates about a 50% improvement in bandwidth with slight changes in the length of the horizontal wire and series capacitor in a 3/8 wave inverted L (60' up, 120 feet out) when going from a
/archives//html/Topband/2012-01/msg00301.html (7,952 bytes)

6. Re: Topband: Caged Inv-L - Pros and Cons ? (score: 1)
Author: "ZR" <zr@jeremy.mv.com>
Date: Wed, 25 Jan 2012 09:08:57 -0500
Id expect the lower RF resistance of 2X more wire would help also. My only cage experience were a pair of 1/4 wave verticals for 80 that were also fed as half waves on 40 at a prior QTH here in the s
/archives//html/Topband/2012-01/msg00304.html (9,585 bytes)

Current List: 1 - 6
Page: [1]
This search system is powered by Namazu