"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