Mail Archive Search: <+subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[TenTec\]\s+openwire\s+feed\s+OT\s*$/>

Results:

References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[TenTec\]\s+openwire\s+feed\s+OT\s*$/: 41 ]

Total 41 documents matching your query.

1. [TenTec] openwire feed OT (score: 1): Author: "Paul DeWitte K9OT" <k9ot@mhtc.net>; Date: Tue, 31 Jan 2006 11:49:29 -0600; I would like to reopen the discussion on getting open wire into the shack. A while back there was quite a discussion on wheather to use a 4-1 or a 1-1 balun when going to coax from open wire outside; /archives//html/TenTec/2006-01/msg01007.html (7,218 bytes)
2. Re: [TenTec] openwire feed OT (score: 1): Author: "Don and Diana Cunningham" <wb5hak@duracom.net>; Date: Tue, 31 Jan 2006 11:58:40 -0600; What an appropriate ham call suffix for "off topic" posts, hi hi. I'm curious to see your responses, Paul, but curious why it is not practical to bring the open wire all the way into your shack. Of c; /archives//html/TenTec/2006-01/msg01008.html (7,728 bytes)
3. Re: [TenTec] openwire feed OT (score: 1): Author: John Nason / NA9U <na9u@arrl.net>; Date: Tue, 31 Jan 2006 10:09:41 -0800 (PST); Hooking the coax to the open wire feeder presents a significant impeadance mismatch. Most open wire is 300 to 600 ohms and coax is 50 to 75 ohms. This would negatively impact power transfer. Since yo; /archives//html/TenTec/2006-01/msg01009.html (9,934 bytes)
4. Re: [TenTec] openwire feed OT (score: 1): Author: "Mike Hyder -N4NT-" <mike_n4nt@charter.net>; Date: Tue, 31 Jan 2006 13:34:44 -0500; Seems I recall numerous references to baluns becoming "saturated" and thus lossy when not used in matched aerial / feedline applications. If this is true then it seems to me that use of a balun with; /archives//html/TenTec/2006-01/msg01010.html (8,466 bytes)
5. Re: [TenTec] openwire feed OT (score: 1): Author: Robert & Linda McGraw K4TAX <RMcGraw@Blomand.Net>; Date: Tue, 31 Jan 2006 14:41:42 -0600; Getting a balanced feed into the shack is usually not a big problem. First are your planning on using "real" open wire or the brown vinyl covered stuff? Real open wire presents a wee bit more of a ch; /archives//html/TenTec/2006-01/msg01011.html (14,700 bytes)
6. Re: [TenTec] openwire feed OT (score: 1): Author: Barry LaZar <k3ndm@verizon.net>; Date: Tue, 31 Jan 2006 14:34:42 -0600 (CST); Paul, You really should use a balun. The choice is a function of what you guess the impedences are going to be. I would start with 10 or so turnws of coax at the transition point and see what happens; /archives//html/TenTec/2006-01/msg01012.html (9,428 bytes)
7. Re: [TenTec] openwire feed OT (score: 1): Author: "HUGHESRO" <ROGERH@realtracs.com>; Date: Tue, 31 Jan 2006 15:53:59 -0600; I've did that on g5rv type and full wave loop. Feed 450 ohm ladder to piece of 1 inch pvc pipe with caps on each end and so239 in bottom and line thru slit in top sealed with silicone. I did not hve; /archives//html/TenTec/2006-01/msg01014.html (9,808 bytes)
8. Re: [TenTec] openwire feed OT (score: 1): Author: "John T. Fleming" <W3GQJ@earthlink.net>; Date: Tue, 31 Jan 2006 17:14:06 -0500; At a field day operation a couple of years ago, our club installed an 80 meter loop. It was fed with "ladder wire." I say that in quotes because the fellow that built it had 100 feet of the twin coax; /archives//html/TenTec/2006-01/msg01015.html (9,258 bytes)
9. Re: [TenTec] openwire feed OT (score: 1): Author: Chas Nagel <cnagel@sbcglobal.net>; Date: Tue, 31 Jan 2006 14:25:53 -0800 (PST); Antenna transmission lines are always a subject of great interest. You already have had some really good answers to your quiry below. In the 50's when I entered into ham radio the OT that was breakin; /archives//html/TenTec/2006-01/msg01016.html (10,244 bytes)
10. Re: [TenTec] openwire feed OT (score: 1): Author: "Scott Harwood" <scotth@hsc.edu>; Date: Tue, 31 Jan 2006 18:34:08 -0500; Thanks for the trip down memory lane, Chas. I had such a tuner and it worked great. The parts are still around. On a related subject, anyone have any thoughts on the ideal lenght of open wire line to; /archives//html/TenTec/2006-01/msg01017.html (11,779 bytes)
11. Re: [TenTec] openwire feed OT (score: 1): Author: Robert & Linda McGraw K4TAX <RMcGraw@Blomand.Net>; Date: Tue, 31 Jan 2006 17:52:16 -0600; I would comment that using coax or shielded cable with a high SWR produces a very lossey condition. RG-8X at 3.9 MHz will have 2.1 dB loss per 100 ft. with a SWR of 10:1 RG-8 at 3.9 MHz will have 1.5; /archives//html/TenTec/2006-01/msg01018.html (10,249 bytes)
12. Re: [TenTec] openwire feed OT (score: 1): Author: Robert & Linda McGraw K4TAX <RMcGraw@Blomand.Net>; Date: Tue, 31 Jan 2006 18:09:00 -0600; If the feed is balanced, thus the currents in each side of the line are equal and are 180 degrees phase difference, thus being current fed, there won't be any RF in the shack. Any unbalance in curren; /archives//html/TenTec/2006-01/msg01019.html (9,990 bytes)
13. Re: [TenTec] openwire feed OT (score: 1): Author: "K. Indart" <kitdart@ntelos.net>; Date: Tue, 31 Jan 2006 19:48:42 -0500; Chas, If you need details of those antenna couplers, let me know as I have the schematics and parts needed to build them. I was around in those years, and earlier... Ken, WA4RPH Antenna transmission; /archives//html/TenTec/2006-01/msg01020.html (11,420 bytes)
14. Re: [TenTec] openwire feed OT (score: 1): Author: "Stuart Rohre" <rohre@arlut.utexas.edu>; Date: Tue, 31 Jan 2006 19:48:44 -0600; The whole subject of running coax directly to balanced line has to take into account how long each type of feedline is. If you had a short piece of coax less than 1/4 wave long, or if you had an exac; /archives//html/TenTec/2006-01/msg01021.html (9,664 bytes)
15. Re: [TenTec] openwire feed OT (score: 1): Author: Ed Gilliland <w5tm@earthlink.net>; Date: Tue, 31 Jan 2006 19:52:24 -0600; Hi Ken, I would like the info and also the parts to build a 1kw link coupled antenna coupler. Prices? Thanks, Ed/W5TM _______________________________________________ TenTec mailing list TenTec@contes; /archives//html/TenTec/2006-01/msg01022.html (13,224 bytes)
16. Re: [TenTec] openwire feed OT (score: 1): Author: "Stuart Rohre" <rohre@arlut.utexas.edu>; Date: Tue, 31 Jan 2006 19:52:25 -0600; I have had excellent results at many field days with a quality Van Gorden 4:1 balun from the 450 ohm or 300 ohm feeders used for our loops of 2 waves and greater, to a short coax connected to our tun; /archives//html/TenTec/2006-01/msg01023.html (8,864 bytes)
17. Re: [TenTec] openwire feed OT (score: 1): Author: Ken Brown <ken.d.brown@verizon.net>; Date: Tue, 31 Jan 2006 18:35:32 -1000; Best way to feed an open wire feedline is with a matching unit that IS a balun. Not a ferrite core balun. An air core balun. Otherwise known as a link coupled tuner such as a Johnson Matchbox or simi; /archives//html/TenTec/2006-01/msg01024.html (10,952 bytes)
18. Re: [TenTec] openwire feed OT (score: 1): Author: "NJ0IP" <Rick@DJ0IP.de>; Date: Wed, 1 Feb 2006 03:39:14 -0800; While we are on the subject of link-coupled feeding of openwire, you might want to take a look at a commercial unit available in England (they have UPS in England too). Go to: http://www.linamp.co.uk; /archives//html/TenTec/2006-02/msg00000.html (6,411 bytes)
19. Re: [TenTec] openwire feed OT (score: 1): Author: Randy Russe3ll <lord_russell53@yahoo.com>; Date: Wed, 1 Feb 2006 08:43:22 -0800 (PST); Rick, I'm sorry to say that unit is not a link coupled tuner. It is a tuner, like most, with a 4:1 Balun on the output of the tuner, so it can be marketed as a balanced line tuner. If your interested; /archives//html/TenTec/2006-02/msg00002.html (9,277 bytes)
20. Re: [TenTec] openwire feed OT (score: 1): Author: "Darwin, Keith" <Keith.Darwin@goodrich.com>; Date: Wed, 1 Feb 2006 12:21:16 -0500; To feed open wire through a wall - use coax. But not like you think. Get 2 pieces of coax, equal in length. Route them through the wall, connect center conductor only, one to each leg of the ladder l; /archives//html/TenTec/2006-02/msg00004.html (7,933 bytes)

Current List: 1 - 20
Page: [1] [2] [3]