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144 MHz 2 meter portable antenna 9 elements for VHF Contests and EME.
Excellent 2 meter portable antenna 9 elements. Packed “Checked Baggage” Length 119 cm. PA144-9-5A.
Highest Class Wide band Antenna 144 to 145 MHz. Perfect to take on VHF Contest or EME expedition. Designed to pass Airline Luggage Restrictions. Excellent Low noise design.
The best 9 elements Yagi antenna with highest possible gain for its length. Great for Terrestrial VHF Contest or EME work.
|Electrical Specifications 2 meter|
||144 – 145 MHz|
|Free Space Forward Gain:||14.3 dBi|
|Front to Back Ratio:
|3 dB Horizontal Beamwidth:||37°|
|3 dB Vertical Beamwidth:||40.2°|
|Polarization||Horizontal or Vertical|
|Nominal Input Impedance:||50 Ohms|
|SWR Across Entire Band:||< 1.2|
|Maximum Power Input:||More than 500 W, 1500 W available|
|Matching Method:||Direct feed through common mode balun|
|Mechanical Specifications 2 meter|
|Number of elements:||9|
|Element Diameter:||8 mm Aluminum tube|
|Dipole Diameter:||8 mm Hard Copper tube|
|Longest element:||1040 mm|
|Element Mounting Position:||Below the Boom|
|Balun and Connector:||Included|
|Boom Length:||4.67 m|
|Boom Size:||30 x 30 mm + 20 x 20 mm|
|Number of Boom Pieces:||4|
|Guy rope support:||Not necessary. Strong boom.|
|Mounting Mast Diameter:||43 – 70 mm 1-1/4″ – 2-3/4″|
|Survival Wind Speed:||150 km/h|
|Transportation Length:||1.19 m|
|Antenna Weight:||6.5 kg|
|Gross Weight:||8.5 kg|
2 meter Yagi Antenna 9 element Vertical Stacking Distances for F/S -12.5 dB:
|2 Antennas||2.95 m for Gain 17.2 dBi (+2.9 dB)|
|4 Antennas||3.05 m for Gain 20.2 dBi (+5.9 dB)|
144 MHz 9 element Yagi Antenna Horizontal Stacking Distances for F/S -12.5 dB:
|2 Antennas||3.15 m for Gain 17.2 dBi (+2.9 dB)|
|4 Antennas||3.3 m for Gain 20.2 dBi (+5.9 dB)|
Lower gain and better suppression of sidelobes. Sometimes good in urban (high noise) area:
Horizontal stack 2.6 m for gain 16.93 dBi F/S< -18.7 dB
Horizontal stack 2.75 m for gain 17.04 dBi F/S< -16.5 dB
Vertical stack 2.5 m for gain 16.95 dBi F/S< -17 dB
Or anything between…
2m VHF contest and EME Low Noise Antenna. Two antennas divider and two LMR-400 cables.
Packed to pass Airline Checked-in Luggage Size Restrictions.
9 element 144 MHz Contest antenna, low noise pickup. Dipole, balun and “N” connector detail.
Bracket view of PA144-9-5A VHF Terrestrial Contest or EME Antenna. Bracket and Boom join view.
By Order Wing Nuts for easy assembling and disassembling.
2 meter Low noise antenna 9 elements. Different boom sizes view joins.
Perfect SWR on built 9 elements 2 meter portable Low Noise Antenna. Less than 1.15 at the band ends.
On working frequencies less than 1.05.
Another view of perfect Low Noise Antenna PA144-9-5A.
Excellent choice 9 element EME and VHF Contest Tropo Yagi antenna.
Lee WW2DX will use this antennas on his EME expedition CY9C
Ultimate design with with latest professional full-3D electromagnetic modelling software.
Not possible with EZNEC Pro/4 – NEC4.2 engine, 4NEC2, EZNEC, YO or AO except by accident.
Or tinkering with antenna elements or spacings.