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References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*Topband\:\s+Feedpoint\s+of\s+short\s+RX\s+vertical\s*$/: 11 ]

Total 11 documents matching your query.

1. Topband: Feedpoint of short RX vertical (score: 1)
Author: luc kerkhofs via Topband <topband@contesting.com>
Date: Sat, 7 Jun 2014 12:13:01 -0700 (PDT)
Hello,   trying to improve my RX setup, I have a question .   When feeding short RX verticals with a coil and resistor in series, does it make sense to decouple the feedline at the feedpoint with a b
/archives//html/Topband/2014-06/msg00037.html (7,558 bytes)

2. Re: Topband: Feedpoint of short RX vertical (score: 1)
Author: donovanf@starpower.net
Date: Sat, 7 Jun 2014 15:17:29 -0400 (EDT)
Luc, I have not taken any steps to decouple the coaxial cable shield from the verticals in my 8-circle BSEF array. I use eight 23 meter long radials with each vertical. Its not clear to me how decoup
/archives//html/Topband/2014-06/msg00038.html (8,026 bytes)

3. Re: Topband: Feedpoint of short RX vertical (score: 1)
Author: dl8yhrfrank--- via Topband <topband@contesting.com>
Date: Sat, 7 Jun 2014 15:23:12 -0400 (EDT)
hi luc so you use a hi z rx arrya and you have matched the 7m long radials with a coil in resonaze? VY 73 frank Hello,   trying to improve my RX setup, I have a question .   When feeding short RX ver
/archives//html/Topband/2014-06/msg00039.html (7,656 bytes)

4. Re: Topband: Feedpoint of short RX vertical (score: 1)
Author: "Tom W8JI" <w8ji@w8ji.com>
Date: Sat, 7 Jun 2014 16:02:44 -0400
When feeding short RX verticals with a coil and resistor in series, does it make sense to decouple the feedline at the feedpoint with a braid breaker ?>>> There is no universal answer. The particular
/archives//html/Topband/2014-06/msg00040.html (8,436 bytes)

5. Re: Topband: Feedpoint of short RX vertical (score: 1)
Author: donovanf@starpower.net
Date: Sat, 7 Jun 2014 16:08:56 -0400 (EDT)
Hi Frank, My 8-circle array uses low impedance verticals, not high impedance verticals like the Hi-Z. My verticals use an inductor and resistor at the base of each vertical. In a Hi-Z array each vert
/archives//html/Topband/2014-06/msg00041.html (8,817 bytes)

6. Re: Topband: Feedpoint of short RX vertical (score: 1)
Author: luc kerkhofs via Topband <topband@contesting.com>
Date: Sat, 7 Jun 2014 14:15:23 -0700 (PDT)
Tom,   one of 2 elements is very close to the house ( 20 ft ) and coax is lying ON the ground, so I guess it is best to use a braid breaker ?   In fact it is a test setup . I also have a receiver 500
/archives//html/Topband/2014-06/msg00042.html (10,274 bytes)

7. Re: Topband: Feedpoint of short RX vertical (score: 1)
Author: Jim Brown <jim@audiosystemsgroup.com>
Date: Sat, 07 Jun 2014 20:24:37 -0700
It DOES make sense to decouple the feedline. I've never heard of a "braid breaker." Under NO conditions should you open the shield == that prevents the shield from being a shield. The good ways to de
/archives//html/Topband/2014-06/msg00045.html (8,643 bytes)

8. Re: Topband: Feedpoint of short RX vertical (score: 1)
Author: luc kerkhofs via Topband <topband@contesting.com>
Date: Sun, 8 Jun 2014 01:26:57 -0700 (PDT)
Jim, I made a braid breaker by using a binocular core 73-202 with 2 turns  primairy and 2 turns on secondary . The term braid breaker comes from John s latest edition of low band DX ing I found that
/archives//html/Topband/2014-06/msg00047.html (9,356 bytes)

9. Topband: Feedpoint of short RX vertical (score: 1)
Author: "Tracey Gardner" <tracey.gardner@talktalk.net>
Date: Sun, 8 Jun 2014 12:17:30 +0100
It DOES make sense to decouple the feedline. I've never heard of a "braid breaker." Under NO conditions should you open the shield == that prevents the shield from being a shield. The good ways to de
/archives//html/Topband/2014-06/msg00048.html (9,442 bytes)

10. Re: Topband: Feedpoint of short RX vertical (score: 1)
Author: "Tom W8JI" <w8ji@w8ji.com>
Date: Sun, 8 Jun 2014 07:53:03 -0400
I think that idea of transformer balun or transformer unun isolation is generally a bad idea in a phased system, and not necessary in almost any system except very special cases. I would generally ju
/archives//html/Topband/2014-06/msg00049.html (10,553 bytes)

11. Re: Topband: Feedpoint of short RX vertical (score: 1)
Author: luc kerkhofs via Topband <topband@contesting.com>
Date: Mon, 9 Jun 2014 09:24:40 -0700 (PDT)
Ok, tnx for information, as always very helpfull . No braid breaker gives me 25 dB F/B at 500 m (1500 ft)  RX site . I use my minivna generator to have a TX signal on my 2 el endfire array . Next que
/archives//html/Topband/2014-06/msg00059.html (10,984 bytes)

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