| Electrical Specifications 2 meter | |
| Frequency Range: |
144 – 145 MHz |
| Free Space Forward Gain: | 14.3 dBi |
| Front to Back Ratio: |
32 dB |
| 3 dB Horizontal Beamwidth: | 37° |
| 3 dB Vertical Beamwidth: | 40.2° |
| G/T | tbd. |
| 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 |
| Connector: | “N” |
| 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: | Â 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 2.6m for gain 16.93 dBi F/S< -18.7 dB
Horizontal stack 2.75m for gain 17.04 dBi F/S< -16.5 dB
Vertical stack 2.5m for gain 16.95 dBi F/S< -17 dB
Or anything between…
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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 High Gain Low Noise Antenna. Less than 1.15 at the band end.
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
Frank –
De antenne is zorgvuldig verpakt en dus keurig aangekomen. Bij de installatie bleek dat alles volledig (en logisch) genummerd is, dus erg gemakkelijk in elkaar te zetten. Ik wilde de antenne ongeveer 7 graden achterover tilten, maar dat bleek helaas niet mogelijk. Ik heb een mast met diverse antennes (zie QRZ.com), maar toch was ong 40 cm boven de 4-4EPS6/4 voldoende afstand om een SWR van 1:1,3 te halen, prima resultaat!