[Antennas] Antenna SWR

Tue Mar 1 12:47:56 EST 2011

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