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Description
Newly developed Linear Phase Shift technology and Direct Joint
structure by three-piece FRP outershell enables antenna to
achieve the following performance:
1. 2m 5/8 wave three-element C-Load and 70cm 5/8 wave
eight-element structure.
2. High performance and high maximum power rating at 2m and
70cm bands.
3. Low VSWR and broader coverage at 2m and 70cm bands.
4. Overlapping three-piece FRP outershell structure is strong
enough to compete with one piece structure.
5. Ring gasket provides perfect waterproofing.
6. Ideally tapered FRP outershell has enough thickness to
withstand strong wind and avoid unwanted QSB.
7. Joint bracket can be fastened securely by special
wrench attached.
8. DC ground structure of the antenna protects transceiver from
high voltage caused by thunder and lightning.
9. Feedpoint connector is being exposed downward at the
bottom of support pipe to make antenna installation or
detachment easier.
10.
With optional 2m/70cm duplexer, two bands can be
transmitted simultaneously, or one band can be transmitted
while simultaneously receiving the other band.
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Specifications
Frequency: 144–148MHz, 435–450MHz
Gain: 8.3dB (2m), 11.7dB (70cm)
Impedance: 50Ω
VSWR: Less than 1.5:1
Max Power Rating: 200W
Max Wind Resistance: 90 MPH
Mast Diameter Accept.: 1 1/5” to 2 2/5”
Length: 17.8’
Radial Length: approx. 20.5”
Weight: 5.73 lbs.
Type: 5/8λ three-element C-Load antenna (2m)
5/8λ eight-element C-Load antenna (70cm)
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VSWR
DIAMOND ANTENNA Products are distributed by RF PARTS COMPANY
435 S. Pacific Street ¥ San Marcos, CA 92078 ¥ (760) 744-0900
www.diamondantenna.net
X500HA SO-239 (UHF)
X500HNA Type-N Female
2m/70cm Dual Band High Performance Gain Vertical Antenna
Direct Joint System ¥ FRP Outershell ¥ Linear Phase Shifter System
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Parts Diagram
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Assembly
Note: Be sure to assemble from upper element. If the antenna is
being assembled from lower element, element can not be pulled
out from outer shell and fastened properly.
1. Put special wrenches on upper and center FRP outershells as
shown in Fig. 1. Use small diameter section of the wrench.
2. Connect upper element in the upper FRP outershell and center
element in the center FRP outershell with screwdriver.
3. After connecting these two elements in the outershells,
fasten upper FRP outershell joint bracket with special
wrenches as shown in Fig. 3.
Fasten the bracket thoroughly until there is no gap between
each part of the bracket.
4. After fastening the bracket, detach the wrenches from the
outer shells as shown in Fig. 4.
5. Connect center element in the center FRP outershell and
lower element in the lower FRP outershell the same was as
sections 2 and 3, but use larger diameter section of the
wrenches as shown in Fig. 5.
6. Attach three radial elements with the wrench as shown
in Fig. 6.
7. Attach mast brackets on support pipe and fix them.
8. Attach assembled antenna on mast as shown in Fig. 8.
While installing, be sure to take the balance of the entire
antenna into account.
9. Connect coaxial cable with connector to feedpoint section at
the bottom of the antenna through waterproof sleeve as
shown in Fig. 9.
10. After connecting coaxial cable, fix waterproof sleeve to the
bottom of support pipe with a screw.
Turn connected coaxial cable once to make a loop right below
the antenna as shown in Fig. 10 to escape excess load from
the cable.
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Adjustment
The X500HAand X500HNAantennas are completely adjustment
free. If VSWR of the antenna is extraordinarily high, most likely
it is due to coaxial cable and connector contact, or a connector
soldering problem. Be sure to use 50Ω coaxial cable to feed the
antenna.
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Note
Though the X500HA and X500HNA are DC grounded structures,
circuit across the inner conductor and outer conductor is opencircuit when measured by a volt-ohm meter. If it is close-circuit,
confirm coaxial cable connections. Use the antenna vertically. If
the antenna is tilted, it can not perform perfectly as it is expected.
Please see next page for
installation safety and
precaution guidelines.
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