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References: [ 7 ]

Total 7 documents matching your query.

1. Re: Topband: Vertical vs yagi (score: 1)
Author: Don Johnson <>
Date: Tue, 14 Feb 2012 17:59:06 -0500
As far as verticals are concerned, since 2003 I have had great success with a Half Square antenna on 80. (descriptions in the ARRL Antenna Book and in ARRL Antenna Compendium No. 5) I have also used
/archives//html/Topband/2012-02/msg00226.html (8,642 bytes)

2. Topband: BOG Antenna Measurements (score: 1)
Author: Don Johnson <>
Date: Sun, 23 Dec 2012 18:17:51 -0500
I have been looking for information on BOGs and have not been able to find any info on measured impedance values. Other than they are low, depends on ground, etc. I thought I would relate my recent e
/archives//html/Topband/2012-12/msg00569.html (9,270 bytes)

3. Re: Topband: BOG Antenna Measurements (score: 1)
Author: Don Johnson <>
Date: Tue, 05 Feb 2013 10:16:44 -0500
Thanks to all for comments concerning my post a couple months ago inquiring about BOG impedance. The short story is since then I have determined that one of my BOGs must have a feed point impedance o
/archives//html/Topband/2013-02/msg00033.html (8,673 bytes)

4. Topband: Don W6AM and Gus W4BPD (score: 1)
Author: Don Johnson <>
Date: Sun, 28 Jul 2013 14:14:13 -0400
I sure remember the 73 magazine articles by Gus, W4BPD. What a DXer and humorous speaker/writer. Probably my most memorable club meeting was when I met him in the early 60's. I have almost all those
/archives//html/Topband/2013-07/msg00130.html (7,099 bytes)

5. Topband: Vertical vs inverted L question/opinions (score: 1)
Author: Don Johnson <>
Date: Sun, 11 Aug 2013 17:48:35 -0400
I have not seen a length mentioned for the inverted L, so thought I would note that by making the inverted L longer than a quarter wave moves the high current portion up the vertical. I had good luck
/archives//html/Topband/2013-08/msg00129.html (7,426 bytes)

6. Topband: In search of resonance (score: 1)
Author: Don Johnson <>
Date: Sat, 15 Feb 2014 13:28:30 -0500
When using a gamma match you are usually going up on the tower beyond the 50 ohm point. From that point down the gamma rod and the tower is acting like a parallel wire transmission rod, transforming
/archives//html/Topband/2014-02/msg00266.html (9,860 bytes)

7. Re: Topband: length of Beverages (score: 1)
Author: Don Johnson <>
Date: Sun, 27 Jul 2014 12:30:39 -0400
The best thing I ever did for Topband receiving was to lay out a 220 foot wire on the ground pointed NE to Europe. I then put one down for 480 feet due West. Switching from one to the other was drama
/archives//html/Topband/2014-07/msg00056.html (8,383 bytes)

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