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Total 17 documents matching your query.

1. Topband: Balun question (score: 1): Author: "Gary Smith" <Gary@ka1j.com>; Date: Thu, 24 Oct 2013 19:25:05 -0400; Though this reflector is for 160M I have an 80M question that might be best asked here. My father W1BML is on an 80 meter net nightly. His antenna in an inv-V with 40 & 80 elements though he never us; /archives//html/Topband/2013-10/msg00214.html (7,723 bytes)
2. Re: Topband: Balun question (score: 1): Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>; Date: Thu, 24 Oct 2013 19:42:04 -0400; Well, might work. Another idea though, check with Fair-Rite - I believe that they have some cores that wil fit over .405 RG-8, and I know they have lots that sill fit over RG-58 or RG-8X. If you don'; /archives//html/Topband/2013-10/msg00216.html (9,064 bytes)
3. Re: Topband: Balun question (score: 1): Author: Jim Bennett <w6jhb@mac.com>; Date: Thu, 24 Oct 2013 16:41:27 -0700; I was just looking through the ARRL Antenna Book - if it's RG-8, then 8 turns would work if wound on an 8 inch PVC tube. However, that size PVC may be difficult to find, and certainly wouldn't be to; /archives//html/Topband/2013-10/msg00217.html (8,715 bytes)
4. Re: Topband: Balun question (score: 1): Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>; Date: Thu, 24 Oct 2013 19:47:58 -0400; That would work as well. I used something similar, but with less turns to precede the 4:1 current balun feeding the drivers on my home brew 5-band quad. Charlie, K4OTV --Original Message-- From: Topb; /archives//html/Topband/2013-10/msg00218.html (9,637 bytes)
5. Re: Topband: Balun question (score: 1): Author: Randy Lake <randyn1kwf@gmail.com>; Date: Thu, 24 Oct 2013 19:50:49 -0400; Check this link out. It works flawlessly. audiosystemsgroup.com/*RFI*-Ham.pdf -- Randy Lake N1KWF 73 Gunn Rd. Keene,NH _________________ Topband Reflector; /archives//html/Topband/2013-10/msg00219.html (10,362 bytes)
6. Re: Topband: Balun question (score: 1): Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>; Date: Thu, 24 Oct 2013 19:55:14 -0400; What "works flawlessly", Randy? The link? J 73, Charlie, K4OTV From: Randy Lake [mailto:randyn1kwf@gmail.com] Sent: Thursday, October 24, 2013 7:51 PM To: Charlie Cunningham Cc: Jim Bennett; Gary@ka1; /archives//html/Topband/2013-10/msg00220.html (10,005 bytes)
7. Re: Topband: Balun question (score: 1): Author: Randy Lake <randyn1kwf@gmail.com>; Date: Thu, 24 Oct 2013 19:57:45 -0400; I am sorry! That was not very clear. The info on chokes worked wonderfully for me on 80m and 160m using the Big 31 snap-ons. Not only that but lots of good info other than chokes. Randy -- Randy Lake; /archives//html/Topband/2013-10/msg00221.html (12,115 bytes)
8. Re: Topband: Balun question (score: 1): Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>; Date: Thu, 24 Oct 2013 20:03:23 -0400; Just teasin' you, Randy! J I think the snap-ons would be quick, simple and very effective and should outlast the antenna, I expect! I am sorry! That was not very clear. The info on chokes worked wond; /archives//html/Topband/2013-10/msg00222.html (11,693 bytes)
9. Re: Topband: Balun question (score: 1): Author: "Tom W8JI" <w8ji@w8ji.com>; Date: Thu, 24 Oct 2013 20:41:20 -0400; Though this reflector is for 160M I have an 80M question that might be best asked here. My father W1BML is on an 80 meter net nightly. His antenna in an inv-V with 40 & 80 elements though he never us; /archives//html/Topband/2013-10/msg00223.html (9,044 bytes)
10. Re: Topband: Balun question (score: 1): Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>; Date: Thu, 24 Oct 2013 21:10:26 -0400; True! Gary, The W2AU balun he was happy with isn't a balun at all...it basically has NO common mode suppression. The impedance of a few turns of coax is also next to nothing on 80 meters, but almost; /archives//html/Topband/2013-10/msg00224.html (9,995 bytes)
11. Re: Topband: Balun question (score: 1): Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>; Date: Thu, 24 Oct 2013 21:15:08 -0400; A W2DU balun, however is another story! Walt knew what he was doing! 73, Charlie, K4OTV Gary, The W2AU balun he was happy with isn't a balun at all...it basically has NO common mode suppression. The; /archives//html/Topband/2013-10/msg00225.html (9,873 bytes)
12. Topband: Balun Question (score: 1): Author: "Tom Boucher" <tom@telemetry.demon.co.uk>; Date: Fri, 25 Oct 2013 15:49:14 +0100; Gary KA1J - take a look at this excellent article on ferriste baluns by GM3SEK: http://www.ifwtech.co.uk/g3sek/in-prac/inpr1005_ext_v2.pdf 73 Tom G3OLB _________________ Topband Reflector; /archives//html/Topband/2013-10/msg00227.html (7,685 bytes)
13. Re: Topband: Balun Question (score: 1): Author: "Tom W8JI" <w8ji@w8ji.com>; Date: Fri, 25 Oct 2013 14:10:50 -0400; Unfortunately, optimum balun impedance and design really depends heavily on the application,. There is no magic design that works best for all applications, and the issue is so complex that almost an; /archives//html/Topband/2013-10/msg00228.html (9,851 bytes)
14. Re: Topband: Balun Question (score: 1): Author: "Gary Smith" <Gary@ka1j.com>; Date: Sun, 27 Oct 2013 19:44:46 -0400; Fellows, Thanks for the on & off list replies, I just got back from a weekend away & read through them all. Part of me wants to just leave it as is but that's not practical, a good icing and the conn; /archives//html/Topband/2013-10/msg00234.html (11,251 bytes)
15. Re: Topband: Balun Question (score: 1): Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>; Date: Sun, 27 Oct 2013 20:02:18 -0400; Hi, Gary Should do fine! The W2DU balun is a good current-mode design by someone who knew what he was doing! As for 160, I do have a W2DU current mode balun, from Unadilla that is longer that the 80-; /archives//html/Topband/2013-10/msg00235.html (12,853 bytes)
16. Re: Topband: Balun Question (score: 1): Author: "Gary Smith" <Gary@ka1j.com>; Date: Sun, 27 Oct 2013 20:50:42 -0400; Hi Charlie, the mast for his inv-V snapped during Hurricane Sandy and I attached the apex to the highest remaining part of the PVC mast that snapped, that I can reach up to. So for this moment, his I; /archives//html/Topband/2013-10/msg00236.html (14,628 bytes)
17. Re: Topband: Balun Question (score: 1): Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>; Date: Sun, 27 Oct 2013 21:11:25 -0400; Hi, Gary, That does sound like a nice location! Well, I worked over 300 countries with antennas supported by trees, before I finally got a little 40' tower to support my home-brew 5-band quad. In tre; /archives//html/Topband/2013-10/msg00237.html (15,962 bytes)

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