[Antennas] Antenna SWR

[David C. Hallam]

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