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Antenna Low Bands 80-160m
On the higher bands, the same antenna is usually used for both TX and RX . The Low Bands are different, in that one good TX antenna is probably adequate. If the TX antenna is relatively inefficient, we can compensate by using more power. But for RX, we require antennae that have the very best signal-to-noise ratio SNR
post 28 Feb 2024
Antenna 80 meter Links →
Antenna GP 3,5 MHz a carico lineare
This vertical antenna for 80 meters at linear load, of 1/2 wave is born from the need to have a good angle of radiation
Antenna HF multibanda deltaloop 6-160 metri
We can choose between loop-magnetic and DELTA LOOP, the latter does not require great skills and particularly high manual skills to build it
Antena para 80/40 metros bobinada e de alta performance
Antenna for 80/40 meters traps and high performance
Duoband antenna for 80 en 20 meter
the antenna has been modeled at 10 m. above average ground with a conductivity of 5 ms/m. and a dielectric constant = 13. Wire diameter is 1,8 mm
2-element Parasitic Vertical Array for 80
this article I want to look further at radial topology of vertical arrays for the low bands
81
This vertical antenna for 80 meters at linear load, of 1/2 wave is born from the need to have a good angle of radiation
We can choose between loop-magnetic and DELTA LOOP, the latter does not require great skills and particularly high manual skills to build it
Antenna for 80/40 meters traps and high performance
the antenna has been modeled at 10 m. above average ground with a conductivity of 5 ms/m. and a dielectric constant = 13. Wire diameter is 1,8 mm
this article I want to look further at radial topology of vertical arrays for the low bands
Take off angle of horizontal antenna For horizontal polarization, the electric field will move sideways on a horizontal plane, while for vertical polarization it will oscillate up and down on a vertical plane
Rx antennas 4Square Rx Vertical Array My frequency design of 1.825 MHz a 90 degrees line would be 33,70 metersinstead of the previously calculated 33,27 m
Calculo da Antena Bazooka A double bazooka antenna is a combination that has a complete coaxial wave multiplied by its velocity factor and a total end-to-end length of 1/4 wave for each side affected by another driver shortening facto