Diamond Antenna F23A Manuale
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Stampa la pagina2m 5/8 Wave Three-Element High performance FRP Shell Gain Vertical Antenna
Description
1. Three piece joint FRP element
structure
employing
developed direct joint system
enables the antenna to:
(A) Achieve enough strength to
compete with one piece
structure
element
overlapping upper and lower
FRP element directly.
(B) Obtain perfect waterproof
structure at the element joint
section by using ring gasket.
(C) Assemble or disassemble if
necessary by simply fastening
or loosening of few connec-
tion points.
2. Unstable vswr caused by weather
conditions is eliminated by perfect
waterproof structure. In addition,
anti-corrosion
and
structure of the antenna enables it
to
be
used
at
seaside
contaminated industrial areas
without any precautions.
3. DC ground structure of the antenna
protects the radio equipment from
high voltage caused by thunder
lightening.
4. Element length and the parameter
of
the
phase
inductor
determined by our years of
experience and experiments to
have maximum high performance.
5. C-LOAD structure employed at
the upper element improves the
propagation efficiency of the
antenna better than conventional
two-element vertical antenna.
FREQUENCY: 144-148 MHz
newly
GAIN:
POWER:
IMPEDANCE: 50 Ohms
VSWR:
MAX WIND
by
RESISTANCE: 40m/sec (112 MPH)
MAST DIAMETER
ACCEPTED:
LENGTH:
WEIGHT:
CONNECTOR: UHF Female
WARRANTY: 1 Year against
rust
free
or
The F23A is completely adjustment
free. If vswr of the antenna is
extremely high. It is most likely due
to trouble in a contact point some-
where. Be sure to see if those contact
points are firmly fastened or correctly
soldered. And coaxial cable connected
are
to the antenna has to be those of
50ohm impedance.
Note: Though the F23A employs DC
ground structure, circuit across the
center conductor and ground section
is open circuited it is measured by
volt-ohm meter. If it is close circuited,
be sure to see coaxial cable and con-
nector section carefully.
DIAMOND ANTENNA Products are distributed by RF PARTS COMPANY
435 S. Paci c S treet
www.diamondantenna.net
F23A
Specifications
7.8 dB
200 Watts
less than 1.5:1
30-62mm
(1-1/5" to 2-2/5")
4.53m (178.3")
1.6 kg (3.5 lbs.)
defects in material
or workmanship.
Adjustment
San Marcos, CA
920 78
(770) 614-7443