MFJ-1775W Rotatable Mini-Dipole
Instruction Manual
11
MAINTENANCE
Your antenna is constructed of heavy-duty non-corrosive materials and should withstand normal climates
for many years. The use of some type of coaxial connector moisture protection is recommended at the
balun coax connection, and also around the center-feed connections, especially in coastal areas where
salty mist is commonplace.
GE makes a pure, silicone grease called "SILICONE DIALECTRIC COMPOUND" that can be applied
SPARINGLY to the threaded area of the female connector. This compound, or even a clear silicone
heatsink compound, will prevent moisture from entering the connector through the threads and protect the
connectors from corrosion. This is the same type of sealer that commercial antenna installers and CATV
companies use with great success.
Plast-Dip
TM
and Liquid Electrical Tape
TM
, available at your local hardware store, also do an excellent job
of insulating/waterproofing connectors, and can be easily peeled off when desired.
A less desirable, but still adequate sealer is the automobile seam sealer commonly sold as "coax seal".
This is a semi-pliable black or white sealing compound.
When installing any "coax seal", NEVER completely cover the barrel of the coax connector. The sealer
should ONLY be placed near the junction of the threaded part of the chassis connector and the knurled
area of the male connector. This will leave the bottom of the male outer sleeve open and permit the
connector to "breathe" so it does NOT collect moisture!
TECHNICAL ASSISTANCE
If you have any problem with this unit first check the appropriate section of this manual. If the
manual does not reference your problem or your problem is not solved by reading the manual,
you may call
MFJ Technical Service
at
662-323-0549
or the
MFJ Factory
at
662-323-5869
.
You will be best helped if you have your unit, manual and all information on your station handy
so you can answer any questions the technicians may ask. You can also send questions by mail
to MFJ Enterprises, INC., 300 Industrial Park Road, Starkville, MS 39759; by Facsimile (FAX)
to 662-323-6551; or by email to techinfo@mfjenterprises.com. Send a complete description of
your problem, an explanation of exactly how you are using your unit, and a complete description
of your station.
