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Total 7 documents matching your query.

1. [TowerTalk] analyzing antenna systems - some questions (score: 1)
Author: k7wxw <k7wxw@arrl.net>
Date: Mon, 20 Mar 2017 10:32:50 -0700
I am building my own antennas and have a couple of questions about using antenna analyzers properly. Here's the setup: I have a 133' doublet, fed with  46' of 450 ohm window line, into a Johnson matc
/archives//html/Towertalk/2017-03/msg00279.html (7,744 bytes)

2. Re: [TowerTalk] analyzing antennas (score: 1)
Author: k7wxw <k7wxw@arrl.net>
Date: Wed, 22 Mar 2017 07:28:45 -0700
Jim, Thanks for the reply and the pointer to simsmith. That's the first free and usable smith charting program I've seen. That's the good news. The bad news is my CAA-500 is an analog analyzer, so no
/archives//html/Towertalk/2017-03/msg00297.html (9,240 bytes)

3. [TowerTalk] questions about installing a mast (score: 1)
Author: k7wxw <k7wxw@arrl.net>
Date: Wed, 11 Oct 2017 18:53:17 -0700
I live on a small corner lot in Portland and trying to improve my antenna situation. Given my lot layout, powerlines and neighbors, a tower or a guyed mast is not possible so I am considering an ungu
/archives//html/Towertalk/2017-10/msg00114.html (7,009 bytes)

4. Re: [TowerTalk] questions about installing a mast (score: 1)
Author: k7wxw <k7wxw@arrl.net>
Date: Wed, 11 Oct 2017 20:18:29 -0700
Well that didn't take long. Thanks all. I now have a long enough list of reasons why using the chimney and not guying is an awful idea. Going to cross this one off the list and try to come up with an
/archives//html/Towertalk/2017-10/msg00116.html (7,327 bytes)

5. [TowerTalk] common mode chokes, baluns and multiband doublets (score: 1)
Author: k7wxw <k7wxw@arrl.net>
Date: Mon, 11 Dec 2017 13:33:52 -0800
Yesterday the wind brought down my doublet, which I mostly see as an upgrade opportunity, at least once I finish pulling tangles of wire out of trees.   While a window line fed doublet is a well-know
/archives//html/Towertalk/2017-12/msg00117.html (8,741 bytes)

6. Re: [TowerTalk] common mode chokes, baluns and multiband doublets (score: 1)
Author: k7wxw <k7wxw@arrl.net>
Date: Mon, 11 Dec 2017 18:43:43 -0800
Roger, Here's what I am confused abot...  Balanced line is balanced because the current in the two lines (the RF signal) is equal magnitude and of opposite phase. The field is cancelled when this is
/archives//html/Towertalk/2017-12/msg00129.html (13,132 bytes)

7. Re: [TowerTalk] common mode chokes, baluns and multiband doublets (score: 1)
Author: k7wxw <k7wxw@arrl.net>
Date: Tue, 12 Dec 2017 14:05:17 -0800
Good morning - I am on the digest version of the list and it took a while to sort all the emails regarding my question out.  Background:  I chose the multiband with a 450 ohm feedline and a Johnson m
/archives//html/Towertalk/2017-12/msg00167.html (11,074 bytes)


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