2 Elements, 70 – 70.5 MHz – 4 meter Yagi antenna PA70-2-08A

70 MHz small Yagi antenna PA70-2-1A. It is 2 element Yagi designed for 4 meter band. In the box is everything included. Antenna + balun with connector + bracket… Elements are tapered to reduce vibrations at the high winds. Boom is just 0.8 meter long. Since this Ham Radio antenna has 2 elements it very easy to set up. Antenna is very good for field day since it is light-weight or even for permanent setup since antenna is very sturdy.

Starting element diameter is 12 mm, middle part 10mm and 8mm ends. Tapered elements will reduce the wind-load. This Ham Radio antenna has widest possible azimuth radiation pattern. 70 MHz 2 element Yagi is good for vertical stacking in permanent setup since this wide angle allows listening to ham radio stations without frequent rotator movement. It is good for E-sporadic season since when there is an opening you don’t need much gain for it.

This 70 MHz has the best performance in the class length of 0.8m. Direct 50 Ohm feed. Our antennas are constructed with the best quality materials for the best mechanical properties and longevity. All screw, nuts and bolts are stainless steel.

Due to the 4m band being fairly low in activity, we want to support and offer special low priced antennas.

Strong, light-weight 4 m 2 element Yagi antenna appearance:

 

Power options:

Antenna does not have power limit, only limitations are in used balun and antenna connector. Default maximum power input is 850 W.

Antenna label	Maximum Input Power
PA70-2-08A	850 W
PA70-2-08AP	1500 W
PA70-2-08AE	2500 W
PA70-2-08AEX	7500 W

Antenna Power Rating does not affect electrical or mechanical characteristics of the antenna. PA70-2-08A, PA70-2-08AP, PA70-2-08AE, PA70-2-08AEX have the same characteristics, only difference is in antenna maximum input power.

 

Electrical and Mechanical specifications of PA70-2-1A antenna.

Electrical specifications of 4 meter 2 element Yagi:

Electrical Specifcations	PA70-2-0.8A Antenna
Frequency Range:	70 – 70.5 MHz
Free Space Forward Gain:	6.2 dBi
Front to Back Ratio:	11 dB
3 dB Horizontal Beam-width:	70°
Polarization:	Horizontal
Nominal Input Impedance:	50 Ohm
SWR Across Entire Band:	< 1.2
Maximum Power Input:	850 W (or more by request)
Matching Method:	Direct feed through common mode choke (current balun)
Connector:	“N” default (SO 239 or 7/16 DIN by request)

 

Mechanical specifications of 70 MHz 2 element antenna:

Mechanical Specifications	PA70-2-0.8A
Number of Elements:	2
Elements Diameter:	12 mm, extensions 10 mm
Dipole Diameter:	12 mm, extensions 10 mm
Longest Element:	2.2 meter
Element Mounting Position:	Below the boom
Balun and Connector:	Included
Boom Length:	0.8 meter
Boom Size:	20 x 20 mm
Turning Radius:	1.2 meter
Number of Boom Pieces:	1
Guy rope support:	Not necessary. Strong boom.
Mounting Mast Diameter:	30 – 50 mm 1-1/4 – 2″ OD
Clamp:	M6 Stainless Steel
Survival Wind Speed:	160 km/h
Wind Load:	–
Net Weight:	1.1 kg
Gross Weight:	1.9 kg
Transportation Length:	1.2 meter

70 – 70.5 MHz 2 element Low Noise Yagi Antenna PA70-2-0.8A. Dipole, connector and balun view.

 

 

Pre tuned antenna:

Before dispatch, we assemble each and every antenna and test antenna characteristics. That means you can expect all the electrical and mechanical characteristics including low SWR across the designed range immediately after assembling.
No need to move, cut, tune or use rasp for any element to get perfect SWR on intended frequency range. Everything is pre tuned.

 

Measuring the SWR of the PA70-2-0.8A antenna.

Measuring the whole band from 70 MHz to 70.5 MHz. Mesured with HP8753ES 6GHz Network Analyzer. SWR is less than 1.1 across the designed range.

 

Video from Peter G3OJV. Grate video about his Ham Radio experience and our PA70-2-08A antenna can be seen here: PA70-2-0.8A antenna + his 50 year 4m story.

 

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