Hi, i have a 2/70 verticle that is "chalking" on the outside of the
white section. I think this is the right term for it. If you grab it
white powdery remnants stay on your hands or clothes. How do you go
about fixing this? Wash with soap and water then spray enamel on it maybe?

Thanks for any input...

Gary
VK3LCD

"Gary Smith" wrote in message
...
Hi, i have a 2/70 verticle that is "chalking" on the outside of the
white section. I think this is the right term for it. If you grab it
white powdery remnants stay on your hands or clothes. How do you go
about fixing this? Wash with soap and water then spray enamel on it maybe?

Thanks for any input...

Gary
VK3LCD

yeah, maybe a light sanding also... but assuming its fiberglass be sure to
take care to not get the dust where you don't want to itch.

Gary Smith wrote:
Hi, i have a 2/70 verticle that is "chalking" on the outside of the
white section. I think this is the right term for it. If you grab it
white powdery remnants stay on your hands or clothes. How do you go
about fixing this? Wash with soap and water then spray enamel on it maybe?

Thanks for any input...

Gary
VK3LCD

Chemtrails.

"Gary Smith" wrote in message
...
Hi, i have a 2/70 verticle that is "chalking" on the outside of the white
section. I think this is the right term for it. If you grab it white
powdery remnants stay on your hands or clothes. How do you go about fixing
this? Wash with soap and water then spray enamel on it maybe?

Thanks for any input...

Gary
VK3LCD

Here is an old file I picked up about 10 years ago. I was not the one that
received the info from Celwave, but just copied off the internet for
information.

**********************************

Antenna Painting Instructions



The following is courtesy Celwave This is what I received when I asked

them for a recommendation of what to use in refinishing my 18 year old

PD455



Celwave receives requests for advice about refinishing weathered antenna
radomes or changing the radome color for aesthetic

reasons. We do not take a position on any manufacturer's paint. However,
Sherwin-Williams seems to make a product, which

should be compatible with radomes and not interfere with the antenna's
electrical performance. The following suggestions are

not a substitute for detailed instructions and mix ratios provided by the
paint manufacturer.







RADOME MATERIAL (Standard Color)

CELWAVE PRODUCT LINE

1. Spun Epoxy Fiberglass (Blue)

Penetrator Antennas (AxR, BxR
Series)

2. Polyester Impregnated Fiberglass (White)

Stationmaster Antennas (PDxx Omni
Series.)

3. Polyester Impregnated Fiberglass (Grey)

FR CELlite Panel Antennas (AP18, 19
Series)

4. ASA (Grey)

FR CELlite Panel Antennas (AP90
Series)

5. AES/ABS (White or Grey)

US Panel Antennas (Other APxx
Models)

6. Gel Coated Fiberglass Tubing (White)

Marine Antennas (Cel-1, 3 etc.)





Notes:



FOR RADOME

MATERIAL

USE THIS FINISH

#1, #2, #3

Primer and Top Coat

#4, #5

Primer may be required ----



(Top Coat retention may be tested with adhesive tape after
paint dries)

#6

Requires Pre-Treat (Acid Etch) to remove gloss, then Primer
and Top Coat









SHERWIN-WILLIAMS PRODUCTS:



Etch

P60G2 "Wash Primer"

Primer

D61H75 "Polane 2.8 Plus Spray Fil"

Top Coat

Polane Type "HS 2.8 Plus Polyurethane"









SURFACE PREPARATION:



Removal of surface contamination is normally accomplished by using an
alcohol solvent, ethanol, propanol, isopropanol, or

butanol. A ten percent solution of methyl ethyl ketone in water can also be
used whenever stubborn oil or grease is

encountered.







APPLICATION PROCEDURES:



Painting to be done indoors, as the uncured product is sensitive to
moisture. Apply one coat of Polane 2.8 Plus Spray Fil

D61H75 Primer. It is designed to fill and/or hide profile and surface
imperfections on metal castings, structural foam, plastic and

wood. Apply one coat of Polane HS 2.8 Plus Polyurethane Enamel Monochromatic
Intermix Color System F63 Series.







FOR FURTHER S-W PRODUCT INFORMATION CONTACT:



Ralph Stadalman - Product Finishing Representative

The Sherwin-Williams Company

Chemical Coating Facility

3165 Tucker Road Bensalem, PA 19020

Voice = (215) 638-0104

Fax = (215) 638-1008







Rev: #5 10/05/98 DLS



File: PAINT.doc



End

"Gary Smith" wrote in message
...
Hi, i have a 2/70 verticle that is "chalking" on the outside of the
white section. I think this is the right term for it. If you grab it
white powdery remnants stay on your hands or clothes. How do you go
about fixing this? Wash with soap and water then spray enamel on it maybe?

Thanks for any input...

Gary
VK3LCD

UV deterioration. Sand and use white Acrylic enamel. I have used it on
masts and Coax too. I have used other light Satin colors for camo effect
with no harm. Darker pigments may detune.

On Jan 10, 6:12*am, Gary Smith wrote:
Hi, i have a 2/70 verticle that is "chalking" on the outside of the
white section. I think this is the right term for it. If you grab it
white powdery remnants stay on your hands or clothes. How do you go
about fixing this? Wash with soap and water then spray enamel on it maybe?

Thanks for any input...

Gary
VK3LCD

acrylic enamel auto paint. I did a camo paint job and the neighbors
thought I took yhe antenna down.

Jimmie

"Gary Smith" wrote in message
...
Hi, i have a 2/70 verticle that is "chalking" on the outside of the white
section. I think this is the right term for it. If you grab it white
powdery remnants stay on your hands or clothes. How do you go about fixing
this? Wash with soap and water then spray enamel on it maybe?

Thanks for any input...

Gary
VK3LCD

------------

Find a paint with a good UV blocker. It sounds like the sunlight is
adversely affecting the binder in the fiberglass.

Ed, N2ECW

"JB" wrote in message
...

"Gary Smith" wrote in message
...
Hi, i have a 2/70 verticle that is "chalking" on the outside of the
white section. I think this is the right term for it. If you grab it
white powdery remnants stay on your hands or clothes. How do you go
about fixing this? Wash with soap and water then spray enamel on it
maybe?

Thanks for any input...

Gary
VK3LCD

UV deterioration. Sand and use white Acrylic enamel. I have used it on
masts and Coax too. I have used other light Satin colors for camo effect
with no harm. Darker pigments may detune.

Actually white acrylic enamel can have more of an effect than you might
think. It is because titanium dioxide pigment is used to achieve the white
color. Depending on the anatase/rutile ratio, the dielectric constant of
titanium dioxide can range from 80 to 110. That of the acrylic paint
without pigment typically is around 3.4. Other pigments can also have an
effect, but avoid any paint containing metallic particles.

I suggest using something like Crystal Clear Krylon® or similar products.
By the way, acrylic paint has excellent ultraviolet resistance.

73, Dr. Barry L. Ornitz WA4VZQ