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On Aug 25, 10:20 pm, Mike Coslo wrote:
wrote : I did make a contact from N Ohio to Idaho with reptty good results running around 35W on 40 meter the other night. Thanks for the input though!!! Did you get your problem solved? A few questions here. Where is the balun located, and what type is it? Internal tuners tend to correct up to only 3:1 or so. There is a good chance that you will still need an outboard tuner. Something like a MFJ 949 would probably do the. If you do use that, you can probably take the balun of the radio end, (if that is where it is at) and run the ladder line directly to the tuner. - 73 de Mike N3LI - The balun is at the feedpoint. It is constructed as per mauf specs. 4" pvc with ten turns of the coax around it, secured with zip ties. |
#3
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On Aug 26, 9:53 am, Dick wrote:
On Mon, 25 Aug 2008 20:51:28 -0700 (PDT), wrote: On Aug 25, 10:20 pm, Mike Coslo wrote: wrote : I did make a contact from N Ohio to Idaho with reptty good results running around 35W on 40 meter the other night. Thanks for the input though!!! Did you get your problem solved? A few questions here. Where is the balun located, and what type is it? Internal tuners tend to correct up to only 3:1 or so. There is a good chance that you will still need an outboard tuner. Something like a MFJ 949 would probably do the. If you do use that, you can probably take the balun of the radio end, (if that is where it is at) and run the ladder line directly to the tuner. - 73 de Mike N3LI - The balun is at the feedpoint. It is constructed as per mauf specs. 4" pvc with ten turns of the coax around it, secured with zip ties. Here is a good article regarding feeding the G5RV. You will note in it that Louis Varney (G5RV) in his later writings, did not recommend the use of a balun. I have used the G5RV for many years without a balun with fairly good success. Here is the article -http://www.vk1od.net/G5RV/index.htm Dick - W6CCD ** Posted fromhttp://www.teranews.com** Correct about "NO Balun" on Lou Varney's design but the writer is using a coaxial choke, nothing more. A G5RV antenna has varing success because of installation conditions & was only designed as a 20 meter antenna. If you're lucky, it will work on various bands but the feedline should come away as close to 90 degrees from the antenna feedpoint & AWAY FROM ALL METAL OBJECTS like gutters, fences, etc! I decided against a G5RV because of room & height. I made up a 66' dipole, fed at center with 450 window/ladder line. That line comes up to & under the eave of the house to a homebrew 4:1 balun which I found on the WWW. I feed that with RG-8 to a NYE tuner for all bands including 80 meters. The tuner is quite resetable & easily adjusted, I am very pleased with it & its only 20' high:-) GL....... Rich |
#4
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On Mon, 25 Aug 2008 20:51:28 -0700 (PDT), wrote:
On Aug 25, 10:20 pm, Mike Coslo wrote: wrote : I did make a contact from N Ohio to Idaho with reptty good results running around 35W on 40 meter the other night. Thanks for the input though!!! Did you get your problem solved? A few questions here. Where is the balun located, and what type is it? Internal tuners tend to correct up to only 3:1 or so. There is a good chance that you will still need an outboard tuner. Something like a MFJ 949 would probably do the. If you do use that, you can probably take the balun of the radio end, (if that is where it is at) and run the ladder line directly to the tuner. - 73 de Mike N3LI - The balun is at the feedpoint. It is constructed as per mauf specs. 4" pvc with ten turns of the coax around it, secured with zip ties. You might look at g5rv's later article on his antenna: http://www.qsl.net/aa3px/g5rv.htm bob k5qwg |
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