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Total 14 documents matching your query.

1. Topband: In search of resonance (score: 1): Author: Carl Braun <Carl.Braun@lairdtech.com>; Date: Thu, 30 Jan 2014 04:16:53 +0000; Hello to the group I'm a newbie to 160 having only participated in various contests over the course of the last two years. I used an 80 meter aluminum tube vertical with a Reyco trap affixed to the t; /archives//html/Topband/2014-01/msg00349.html (9,413 bytes)
2. Re: Topband: In search of resonance (score: 1): Author: "Tom W8JI" <w8ji@w8ji.com>; Date: Thu, 30 Jan 2014 12:14:17 -0500; I cannot get the inverted L to provide a dip on my MFJ 259 analyzer anywhere in the 160 meter band. I get dips at 8.2 MHz (R=36 ohms X=0) with reactance on each side of X=0. At 5 MHz R=40 ohms X=0 wi; /archives//html/Topband/2014-01/msg00354.html (9,407 bytes)
3. Re: Topband: In search of resonance (score: 1): Author: Tree <tree@kkn.net>; Date: Thu, 30 Jan 2014 09:17:10 -0800; You might be dealing with AM BCB being detected by the meter - and masking what you are looking for. _________________ Topband Reflector Archives - http://www.contesting.com/_topband; /archives//html/Topband/2014-01/msg00355.html (9,700 bytes)
4. Re: Topband: In search of resonance (score: 1): Author: "Tom W8JI" <w8ji@w8ji.com>; Date: Thu, 30 Jan 2014 13:33:48 -0500; You might be dealing with AM BCB being detected by the meter - and masking what you are looking for. No, because he gets a dip to zero reactance. If that happens anywhere, there is no BCI. 73 Tom ___; /archives//html/Topband/2014-01/msg00360.html (7,800 bytes)
5. Re: Topband: In search of resonance (score: 1): Author: "chetmoore" <chetmoore@cox.net>; Date: Thu, 30 Jan 2014 21:22:22 -0500; Thanks for this tidbit of information. As soon as this white manure melts (some people call it snow) I will do a re-check on my shunt fed tower. I think I did have at least one dip to zero and never; /archives//html/Topband/2014-01/msg00369.html (8,237 bytes)
6. Re: Topband: In search of resonance (score: 1): Author: "Tom W8JI" <w8ji@w8ji.com>; Date: Fri, 31 Jan 2014 02:39:28 -0500; Tom <<Maybe you saw my post where I stated that the MFJ plunged to a minimum reading of 4 0hms at 1825? Does this reading mean that the L is near ground potential and 'in union' with the grounded Sky; /archives//html/Topband/2014-01/msg00372.html (9,299 bytes)
7. Re: Topband: In search of resonance (score: 1): Author: Pete Smith N4ZR <n4zr@contesting.com>; Date: Fri, 31 Jan 2014 06:27:06 -0500; To my amazement, a 5000-watt AM station on 1550 KHz 5 miles away is enough to clobber my MFJ-259's usefulness during the day. Fortunately they drop to 6 watts at local sundown (what do you suppose th; /archives//html/Topband/2014-01/msg00373.html (9,748 bytes)
8. Re: Topband: In search of resonance (score: 1): Author: Pete Smith N4ZR <n4zr@contesting.com>; Date: Fri, 31 Jan 2014 06:51:07 -0500; On 160, that is. 73, Pete N4ZR Check out the Reverse Beacon Network at http://reversebeacon.net, blog at reversebeacon.blogspot.com. For spots, please go to your favorite ARC V6 or VE7CC DX cluster n; /archives//html/Topband/2014-01/msg00374.html (10,366 bytes)
9. Re: Topband: In search of resonance (score: 1): Author: Carl Braun <Carl.Braun@lairdtech.com>; Date: Thu, 30 Jan 2014 21:40:01 +0000; Thanks to all who responded to my post I will consider all of the ideas that were presented including improving the ground radials. That's a given. I have an ICE broadcast filter for RX...can this be; /archives//html/Topband/2014-02/msg00009.html (12,425 bytes)
10. Re: Topband: In search of resonance (score: 1): Author: Carl Braun <Carl.Braun@lairdtech.com>; Date: Fri, 31 Jan 2014 00:14:33 +0000; Sorry I sent the last post by accident. To the point what I'm seeing is a resonance OF THE TOP WIRE ONLY. This explains why my MFJ reads R=4 ohms at 1820...it's grounding or shunting the whole vertic; /archives//html/Topband/2014-02/msg00010.html (11,695 bytes)
11. Re: Topband: In search of resonance (score: 1): Author: Carl Braun <Carl.Braun@lairdtech.com>; Date: Fri, 31 Jan 2014 03:03:46 +0000; Chet Tom's right. I get a clear dip at 8 MHz with X=0 and 5 MHz with X=0, both with good indications of varying reactance on both sides of the resonant freg. I'll give his suggestion of 129' length a; /archives//html/Topband/2014-02/msg00013.html (9,515 bytes)
12. Topband: In search of resonance (score: 1): Author: Don Johnson <n4dj@me.com>; 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)
13. Re: Topband: In search of resonance (score: 1): Author: Herbert Schonbohm <herbert.schoenbohm@gmail.com>; Date: Tue, 25 Feb 2014 12:52:13 -0400; Can I run a single drop wire into my panel and then switch the feed between two matching networks? One for 160 and one for 80? Please advise Thanks Carl AG6X Carl, Why not just run a slant wire to yo; /archives//html/Topband/2014-02/msg00441.html (9,405 bytes)
14. Re: Topband: In search of resonance (score: 1): Author: "kd9sv" <kd9sv@comcast.net>; Date: Tue, 25 Feb 2014 12:42:04 -0500; Herb, you can feed any number of bands through one gamma arm or wire as long as the highest frequency to be used is less than 1/4 wave length on the gamma arm or wire. The appropriate matching is sti; /archives//html/Topband/2014-02/msg00443.html (9,988 bytes)

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