82 | Antennas.eu@pulseelectronics.com • Antennas.as@pulseelectronics.com • Antennas.us@pulseelectronics.com
www.pulselarsenantennas.com • 1 800 ANTENNA (268-3662) | 83
RG-58U - Low Loss Dual Shield
with Solid Center Conductor (UD
This is Larsen’s premium coax for 800 and
900 MHz applications. The solid center
conductor (20 AWG) is easy to use with all
connectors. Digital applications benefit
from the 100% Duofoil aluminum shield.
The shield is not glued to the dielectric
making it easier to peel back for connector
installation. The braid is 95% coverage.
This cable is standard for most mount-
ing kits over 800 MHz and can be special
ordered with other frequencies. Uses stan-
dard RG-58 connectors.
Recommended Applications
For all applications at 800 MHZ and above
Larsen Part Number: UD Coax
Stocking Lengths: 1000’/Spool
Cut to order
RG-213 - Stranded Bare Braid -
Mil Spec QPI
This RG-8-sized cable uses a stranded cen-
ter conductor with a polyethylene dielectric
and PVC jacket. Built to Mil Specs this cable
is used in all Larsen UHF/VHF products tar-
geted for outdoor installation.
Recommended Applications
For lower frequency applications requiring
high ruggedness.
Larsen Part Number: RG-213
Stocking Lengths: 500’ or
1000’/Spool
Cut to order
RG-174 - Small Diameter Coax
RG-174 is the industry standard for appli-
cations requiring a small diameter, highly
flexible coax. Frequently used in mobile
mag mount applications. Subject to higher
losses at higher frequencies. Good per-
formance for environmental variations but
lower in overall ruggedness.
Recommended Applications
Mobile/Portable less than 900 MHz where
flexibility and small diameter is important.
Larsen Part Number: RG-174
Stocking Lengths: 1000’/Spool
Cut to order
RG-58A/U - “Digi-Shield”™
Low Loss Braided Center
Employs two shields, consisting of a full
aluminum/mylar wrap covered by a braid.
This combination of shields, plus low-loss
dielectric material and stranded center con-
ductor makes an excellent choice for mobile
applications. Performance features include
low-loss and high flexibility. Uses standard
RG-58 connectors.
Recommended Applications
Higher performance applications where
lower loss and flexibly are important.
Recommended for applications above 800
MHz.
Larsen Part Number: DS Coax
Stocking Lengths: 1000’/Spool
Cut to order
RG-58A/U - CX Standard Coax
The industry standard in quality, value-
priced coax. Stranded center conductor
offers good flexibility and long-life under
most conditions. Not typically recom-
mended for applications above 512 MHz
due to higher losses. Uses standard RG-58
connectors.
Recommended Applications
First
choice for value priced coax.
Larsen Part Number: CX Coax
Stocking Lengths: 1000’/Spool
Cut to order
COAX TYPES/PART NUMBERS COAX SPECIFICATION COMPARISON
COAXIAL CABLESCOAXIAL CABLES
TECHNICAL CHARACTERISTICS OF INSULATION AND JACKET COMPOUNDS
TEFLON
This material has excellent electrical properties,
temperature range and chemical resistance.
It is not suitable where subjected to nuclear
radiation and does not have good high voltage
characteristics. FEP Teflon is extrudable in a
manner similar to PVC and polyethylene. This
means long wire and cable lengths are available.
TFE Teflon is extrudable in hydraulic ram-type
process. Lengths are limited due to amount of
material in the ram, thickness of the insulation
and preform size. TFE must be extruded over
a silver- or nickel-coated wire. The nickel- and
silver-coated designs are rated 260° C and
200° C maximum, respectively. The cost of Teflon is
approximately 8 to 10 times more per pound than PVC
compounds.
POLYETHYLENE
(SOLID AND FOAM)
A very good insulation in terms of electrical
properties. Low dielectric constant, a stable
dielectric constant over all frequencies, very
high insulation resistance. In terms of flexibility,
polyethylene can be rated stiff to very hard,
depending on molecular weight and density
— low-density being the most flexible, and
high-density, high-molecular weight formulation
being very hard. Moisture resistance is rated
excellent. Correct Brown and Black formula-
tions have excellent weather resistance. The
dielectric constant is 2.3 for solid insulation and
1.64 for foam designs. Flame retardant formu-
lations are available with dielectric constants
ranging from about 1.7 for foam flame retardant
to 2.58 solid flame retardant polyethylene.
PVC
Sometimes referred to as vinyl or polyvinyl
chloride. Extremely high or low temperature
properties cannot be found in one formulation.
rating. Other common vinyls may have -20° C
to +60° C. There are many formulations for the
variety of different applications. The many vari-
eties of PVC also differ in pliability and electrical
properties. The price range can vary accord-
ingly. Typical dielectric constant values can vary
from 3.5 to 6.5.
Nominal Temperature Range/Insulating and Jacketing Compounds
Normal Normal Special Special
Compound Low High Low High
Polyethylene - Solid -60° C 80°C -- --
Polyethylene - Foam -60° C 80° C -- --
FEP Teflon -70° C 200° C -- --
PVC -20° C 80° C -55° C 105° C
TFE Teflon -70° C 260° C -- --
Comparative Properties of Insulation and Jacket
PVC Low-density Polyethylene
Oxidation Resistance E E
Heat Resistance G-E G
Oil Resistance F G-E
Low Temperature Flexibility P-G E
Weather, Sun Resistance G-E E
Ozone Resistance E E
Abrasion Resistance F-G G
Electrical Properties F-G E
Flame Resistance E P
Nuclear Radiation Resistance F G-E
Water Resistance F-G E
Acid Resistance G-E G-E
Alkali Resistance G-E G-E
Gasoline, Kerosene, Etc.
(Aliphatic Hydrocarbons) Resistance P G-E
Benzol, Toluol, Etc.,
(Aromatic Hydrocarbons) Resistance P-F P
Degreaser Solvents
(Halogenated Hydrocarbons) Resistance P-F G
Alcohol Resistance G-E E
Underground Burial P-G G