PA144-11-6 - Antennas

Antennas-Amplifiers
www.antennas-amplifiers.com
PA144-11-6
Precision 144 - 146 MHz Wideband Antenna
The "Dual" company has been producing antennas for more than 25 years.
Our focus is on:
- wide bandwidth,
- designs that work equally well in all weather conditions,
- very low SWR and superior G/T, F/B and F/S ratios across the entire frequency band,
- excellent mechanical properties, and
- uncompromised durability.
We do not use "amateur" programs like NEC4, NEC2, 4NEC2, EZNEC, YO or AO.
We perform the design work using the latest professional full-3D electromagnetic
modelling software, This enables us to accurately include the influence of the boom, insulators,
baluns, feed point, connections, etc
Our designs are optimised using the Particle Swarm algorithm, which is considered
one of the best global optimization algorithms. We also use the classic Nelder-Mead Simplex
algorithm for fine-tuning. Our optimization runs frequently exceed 1 million evaluations.
We rely on solid physics, not on "clever" tinkering with antenna elements or spacings.
By paying the greatest attention to all of the important details, we are able to consistently
produce top performance designs.
Our antennas are precision physical instruments, they are real "Precision Antennas".
For best performance with unmatched long-term durability "Dual" is your first choice.
All Dual antennas are fully tested and backed by the Warranty.
Company Dual. The largest antenna and ham radio equipment manufacturer in Serbia, established 1988.
Address: Trg puk. D. Gavrilovića 2, 37000 Kruševac, Serbia. www.dual.rs, www.antennas-amplifiers.com
Tel. +381 37 3419 100, +381 69 3419 100, Fax: +381 37 3419 102
PA144-11-6
Electrical Specifications
Frequency Range:
Free Space Forward Gain:
Front to Back Ratio:
3 dB Horizontal Beamwidth:
3 dB Vertical Beamwidth:
Nominal Input Impedance:
Maximum SWR at any freq.:
Maximum Power Input:
Matching Method:
Connector:
Mechanical Specifications
144 - 146 MHz
15 dBi
27 dB
34.7°
37.8°
50 Ohm
1 : 1.2
500 W
Direct feed through.
current balun.
”N” or SO239 (option).
Boom length:
Boom Diameter:
Element Diameter:
Longest element:
No. of elements:
Element position:
6m
OD 40 mm
OD 8 mm
1.05 m
11
Facing to
the Earth
Turning radius:
3.5 m
Mounting Mast Diameter: 40 - 70 mm
Survival Wind Speed:
150 km/h
Weight:
5.5 kg
Vertical Stacking Distance
Horizontal Stacking Distance
2 antennas for F/S< -12.5 dB 3.2 m
Gain:
17.9 dBi (+2.9 dB)
2 antennas for F/S< -12.5 dB 3.4 m
Gain:
17.85 dBi (+2.85 dB)
4 antennas for F/S< -12.5 dB 3.3 m
Gain:
20.9 dBi (+5.9 dB)
4 antennas for F/S< -12.5 dB 3.6 m
Gain:
20.9 dBi (+5.9 dB)
145 MHz Azimuth Radiation Pattern
145 MHz Elevation Radiation Pattern
PA144-11-6 Measured characteristics with calibrated HP8753ES Network Analyzer.
Measured S11 144 - 146 MHz at antenna connector.
Measured 144 - 146 MHz VSWR at Finished Antenna.
Company Dual. The largest antenna and ham radio equipment manufacturer in Serbia.
www.dual.rs, www.antennas-amplifiers.com, info@antennas-amplifiers.com
Tel. +381 37 3419 100, +381 69 3419 100, Skype: DualSerbia
Generic mounting instruction for all 144 MHz antennas:
Antenna parts:
Dipole with Balun and "N" conn.
Elements.
Dipole holder "Max Air"
Boom.
Galvanized and powder coated antenna mounting bracket
with galvanized V Bolts and self-locking hex nuts.
Boom joins
Assembly instruction:
1. Join the boom. Use self-locking hex nuts M6.
2. Attach elements. Starting with 1, paying special attention on orientation.
Required torque 1.6 Nm.
Please use Torque screwdriver. We propose Wiha TorqueVario®-S Torque screwdriver 2852.
Before tighten the screws apply thread lock like Loctite or Permatex.
Company Dual. The largest antenna and ham radio equipment manufacturer in Serbia.
www.dual.rs, www.antennas-amplifiers.com, info@antennas-amplifiers.com
Tel. +381 37 3419 100, +381 69 3419 100, Skype: DualSerbia
3. Attach dipole.
4. Fasten balun with plastic zip tie to balun holder.
5. Screw connector to connector holder
6. Antenna end
7. If needed align elements and screw tightly. Elements must stand in one plane.
8. Assemble and attach antenna mounting bracket. Enclosed are 2 pcs V-Bolts for diameter up to 50 mm and
2 pcs V-Bolts for diameter up to 70 mm.
9 Raise antenna. Elements must facing to the Earth.
10. Measure SWR. It must be less than 1:1.2 on all frequencies. It is sign that you assemble everything well. Best DX.
Company Dual. The largest antenna and ham radio equipment manufacturer in Serbia.
www.dual.rs, www.antennas-amplifiers.com, info@antennas-amplifiers.com
Tel. +381 37 3419 100, +381 69 3419 100, Skype: DualSerbia