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Total 12 documents matching your query.

1. Topband: FERRITE BEADS (score: 1)
Author: "Dan" <w0vd@sofnet.com>
Date: Thu, 18 Dec 2003 22:32:36 -0600
I need to build a good current balun for 80 and 160 meters. Palomar has 43 material that has a .5 inch hole that 9913f coax will fit through. These beads are 1.12 inches long. How many of these will
/archives//html/Topband/2003-12/msg00150.html (6,858 bytes)

2. Re: Topband: FERRITE BEADS (score: 1)
Author: "Tom Rauch" <w8ji@contesting.com>
Date: Fri, 19 Dec 2003 06:20:40 -0500
It depends on the balun impedance your exact application requires, but the answer is probably more than you would every care to purchase! You need to be up around a 65 material at high power high st
/archives//html/Topband/2003-12/msg00152.html (8,231 bytes)

3. Re: Topband: FERRITE BEADS (score: 1)
Author: k2wh@optonline.net
Date: Fri, 19 Dec 2003 10:25:28 -0500
Never heard of steel wool for that purpose. I would think that instead of steel wool why not just run the coax in steel conduit instead. If it worked at all. The ferrite cores sold by Palomar I belie
/archives//html/Topband/2003-12/msg00153.html (6,623 bytes)

4. Re: Topband: FERRITE BEADS (score: 1)
Author: Earl W Cunningham <k6se@juno.com>
Date: Fri, 19 Dec 2003 08:06:26 -0800
"I need to build a good current balun for 80 and 160 meters. Palomar has 43 material that has a .5 inch hole that 9913f coax will fit through. These beads are 1.12 inches long. How many of these will
/archives//html/Topband/2003-12/msg00154.html (7,519 bytes)

5. Re: Topband: FERRITE BEADS (score: 1)
Author: "K9AY" <k9ay@k9ay.com>
Date: Fri, 19 Dec 2003 13:47:44 -0600
I concur that 77 material is a good choice. It is designed for RF applications and has lower loss than 43 or 73 materials, which -- by design -- have higher resistive loss to absorb energy in EMI/RF
/archives//html/Topband/2003-12/msg00157.html (8,328 bytes)

6. Re: Topband: FERRITE BEADS (score: 1)
Author: "CHARLES HUTTON" <charlesh3@msn.com>
Date: Fri, 19 Dec 2003 20:07:04 +0000
My answer for 160 is to build a special little box that has as many turns of RG-174 or RG-189 as possible on the biggest ferrite toroid I can find, usually using J material as broadcast stations are
/archives//html/Topband/2003-12/msg00158.html (10,307 bytes)

7. Re: Topband: FERRITE BEADS (score: 1)
Author: "Tom Rauch" <w8ji@contesting.com>
Date: Fri, 19 Dec 2003 16:46:02 -0500
I spent a few weeks making measurements when HyGain was having problems with beads, and some years before when MFJ was having baluns in one antenna cook at just a few hundred watts! In both cases th
/archives//html/Topband/2003-12/msg00159.html (9,404 bytes)

8. Re: Topband: FERRITE BEADS (score: 1)
Author: "Mike Harris" <mike.harris@horizon.co.fk>
Date: Fri, 19 Dec 2003 20:25:43 -0200
G'day, ARRL Antenna Book, 17th edition, p26-20 supports this number. Regards, Mike VP8NO _______________________________________________ Topband mailing list Topband@contesting.com http://lists.conte
/archives//html/Topband/2003-12/msg00160.html (7,659 bytes)

9. Re: Topband: FERRITE BEADS (score: 1)
Author: "Milt Jensen, N5IA" <n5ia@zia-connection.com>
Date: Fri, 19 Dec 2003 21:12:18 -0700
SNIP coax, SNIP My solution, relatively inexpensive but quite time consuming at the lower frequency bands, is to use 1/4 WL open sleeve baluns. I use these on 70 CM and 2 M directionals in quantity o
/archives//html/Topband/2003-12/msg00163.html (9,940 bytes)

10. Re: Topband: FERRITE BEADS (score: 1)
Author: "Milt Jensen, N5IA" <n5ia@zia-connection.com>
Date: Sat, 20 Dec 2003 22:38:26 -0700
Ulrich and others that have inquired. Ther is no velocity factor involved with the sleeve balun. The coaxial feedline has no effect. The sleeve balun is like an element of the antenna and is cut acco
/archives//html/Topband/2003-12/msg00173.html (14,018 bytes)

11. Topband: Ferrite beads (score: 1)
Author: "Joe K2UF" <joe@k2uf.com>
Date: Wed, 20 Aug 2014 14:31:01 -0400
Anyone know if the ferrite beads that are encased on the cables of older CRT monitors are any good for use in the shack. This has probably been asked before but I can not find any info. Thanks , Joe
/archives//html/Topband/2014-08/msg00227.html (6,539 bytes)

12. Re: Topband: Ferrite beads (score: 1)
Author: "Carl" <km1h@jeremy.mv.com>
Date: Wed, 20 Aug 2014 15:39:48 -0400
Anyone know if the ferrite beads that are encased on the cables of older CRT monitors are any good for use in the shack. This has probably been asked before but I can not find any info. Thanks , Joe
/archives//html/Topband/2014-08/msg00229.html (7,038 bytes)

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