[Antennas] Antenna SWR

[David C. Hallam]

Rick,

If it really doesn't matter about spacing between radials, I will put 
some more down that are cut to lengths for each band.  I've got lots of 
wire.  I am using a 18ga 2 conductor cable with vinyl jacket for 
radials.  I was given a great big roll of the stuff.

Right now I am recovering from a knee replacement operation, so it's a 
little hard to get down on the ground to do work on the antenna or radials.

On the other hand, maybe I never should have gotten an antenna analyzer 
and remained dumb and happy.  Too much information might not be good.

David
KW4DH

On 3/1/2011 5:25 PM, Rick Gouge wrote:
> With that kind of ground i would cut two wires to res on each band 
> where you like to lisen. With that kind of soil i think i can see why 
> your seeing such a big change in your SWR. Rick VE7Rik
>
>
> ----- Original Message ----- From: "David C. Hallam" 
> <dhallam at knology.net>
> To: "Rick Gouge" <rickgouge at shaw.ca>; "Antennas" 
> <antennas at mailman.qth.net>
> Sent: Tuesday, March 01, 2011 10:09 AM
> Subject: Re: [Antennas] Antenna SWR
>
>
>> Rick,
>>
>> I live in Clearwater, FL near but not on the Gulf.  Our soil is very 
>> sandy.  There is a very thin layer of top soil, then you are into sand.
>>
>> David
>> KW4DH
>>
>> On 3/1/2011 1:04 PM, Rick Gouge wrote:
>>> As long as the radials do not touch. Plus your 75 ohm feed line 
>>> should be below the radials as well. I am going to put 35 or 30 foot 
>>> lenghts fan around the whole antenna. How wet does your ground get? 
>>> My lawn in very wet so lenghts of the radials do not matter as long 
>>> as they are all 30 feet or better. Rick VE7RiK
>>> ----- Original Message ----- From: "David C. Hallam" 
>>> <dhallam at knology.net>
>>> To: "Rick Gouge" <rickgouge at shaw.ca>; "Antennas" 
>>> <antennas at mailman.qth.net>
>>> Sent: Tuesday, March 01, 2011 9:47 AM
>>> Subject: Re: [Antennas] Antenna SWR
>>>
>>>
>>>> Rick,
>>>>
>>>> No, I do not have a lot or ground radials.  I have 8 - 60ft 
>>>> radials. Unfortunately, with my 1/4 acre lot and trees, I had to 
>>>> put the antenna along side the house.  4 radials fan out slightly 
>>>> to the east of the antenna and the other 4 fan out to the west.  
>>>> the ones to the west fan out more than the easterly ones do as they 
>>>> go out into the back yard.
>>>>
>>>> I don't know at what point close spacing negates the effectiveness 
>>>> of radials.
>>>>
>>>> David
>>>> KW4DH
>>>>
>>>> On 3/1/2011 12:29 PM, Rick Gouge wrote:
>>>>> David. Do you have alot of ground radials? the one i have does 
>>>>> change alittle as well. I know i need more ground radials Rick VE7RiK
>>>>> ----- Original Message ----- From: "David C. Hallam" 
>>>>> <dhallam at knology.net>
>>>>> To: "Antennas" <antennas at mailman.qth.net>
>>>>> Sent: Tuesday, March 01, 2011 9:22 AM
>>>>> Subject: [Antennas] Antenna SWR
>>>>>
>>>>>
>>>>> I just got a new play toy, an antenna analyzer, and have taken 
>>>>> some SWR
>>>>> measurements on my antenna. I have a Butternut HF6V. This morning I
>>>>> measured the SWR. Shortly afterward we had a rain storm. Out of
>>>>> curiosity I measured the SWR again and found a significant upward 
>>>>> change
>>>>> on all bands. I am confident there is no water egress at the 
>>>>> connection
>>>>> of the feed line to 20M 1/4 wave transformer section. All joints 
>>>>> on the
>>>>> antenna were assembled with Noalox. Maybe there could have been some
>>>>> water egress at the connecting lugs of the the 1/4 section on the
>>>>> antenna where they connect to the antenna but they appear to be 
>>>>> sealed.
>>>>>
>>>>> Should I expect a SWR change just from a wet antenna?
>>>>>
>>>>
>>>> -- 
>>>> “I bring reason to your ears, and, in language as plain as ABC, 
>>>> hold up truth to your eyes.” Thomas Paine, December 23, 1776
>>>>
>>>>
>>>>
>>>> -----
>>>> No virus found in this message.
>>>> Checked by AVG - www.avg.com
>>>> Version: 10.0.1204 / Virus Database: 1435/3475 - Release Date: 
>>>> 03/01/11
>>>>
>>>
>>>
>>
>> -- 
>> “I bring reason to your ears, and, in language as plain as ABC, hold 
>> up truth to your eyes.” Thomas Paine, December 23, 1776
>>
>>
>>
>> -----
>> No virus found in this message.
>> Checked by AVG - www.avg.com
>> Version: 10.0.1204 / Virus Database: 1435/3475 - Release Date: 03/01/11
>>
>
>

-- 
“I bring reason to your ears, and, in language as plain as ABC, hold up truth to your eyes.” Thomas Paine, December 23, 1776