[Repeater-Builder] antenna question - Dip It and Scotch Kote and Kry

2008-05-04 Thread Bruce Bagwell

OK guys, along this same line, I have a VHF all copper J-Pole and plan on 
building UHF all copper J-pole.
Is common clear lacquer OK to prevent corrosion on the copper elements?  I have 
used automotive type black silicone under 2 wide electrical tape to seal 
connections and the coax itself. The Coax to antenna connectors have been 
soldered to the copper tubing after finding best SWR.
Other choices, Clear enamel, colored lacquer/enamel etc. Other stuff I have not 
even thought of?
mainly just stop the copper from turning green but don't want to mess with 
the antenna in any way. This will be used beside my house and not at some far 
away repeater. Limited life is OK so long as I am aware of limitations.

Bruce
KE5TPN



This painting of antennas seems to be on many of our minds.

Wonder what the antenna manufactures would recommend or what they use if any??? 
After you get beyond the sales person who swears their products are rock solid 
and don't need painting or additional protection then you might get someone who 
would give some info.

I would hope they would have done testing for anything they recommend, both SWR 
and pattern and signal.

73, ron, n9ee/r

From: Chuck Kelsey [EMAIL PROTECTED]
Date: 2008/05/04 Sun AM 08:52:31 CDT
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Re: antenna question - Dip It and Scotch Kote 
and Krylon

 
Funny you should mention Krylon... although I haven't done so in recent 
years, I used to Krylon (clear) all antennas and never had a problem. I 
forgot all about that until your mention of it. And they were mostly UHF 
antennas - beams and folded dipoles. Go figure.

Chuck
WB2EDV

- Original Message - 
From: skipp025 [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Sunday, May 04, 2008 9:44 AM
Subject: [Repeater-Builder] Re: antenna question - Dip It and Scotch Kote

I constructed a 6 meter beam some years back, worked like a bomb
 even at 25ft above ground elevation. To ensure my pride and joy
 would last a long time I sprayed it with clear Krylon brand spray
 paint.

 The antenna was instantly unusable regardless of my efforts to
 remove the paint, re-tune or otherwise modify the antenna. I later
 learned that type of paint contained materials with a horible
 D-Factor. I was never able to use the antenna again, although it
 remains in my back yard as a reminder.

 cheers,
 s.
 
 

Ron Wright, N9EE
727-376-6575
MICRO COMPUTER CONCEPTS
Owner 146.64 repeater Tampa Bay, FL
No tone, all are welcome.



 

Re: [Repeater-Builder] antenna question - Dip It and Scotch Kote and Kry

2008-05-04 Thread Kris Kirby
On Sun, 4 May 2008, Bruce Bagwell wrote:
 OK guys, along this same line, I have a VHF all copper J-Pole and plan 
 on building UHF all copper J-pole. Is common clear lacquer OK to 
 prevent corrosion on the copper elements?  I have used automotive type 
 black silicone under 2 wide electrical tape to seal connections and 
 the coax itself. The Coax to antenna connectors have been soldered to 
 the copper tubing after finding best SWR. Other choices, Clear enamel, 
 colored lacquer/enamel etc. Other stuff I have not even thought of? 
 mainly just stop the copper from turning green but don't want to 
 mess with the antenna in any way. This will be used beside my house 
 and not at some far away repeater. Limited life is OK so long as I am 
 aware of limitations.

Paint it any color but clear, copper, silver, or gold if you want to 
remain the owner of it.

--
Kris Kirby, KE4AHR  [EMAIL PROTECTED]
But remember, with no superpowers comes no responsibility. 
--rly