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Automatic SWR meter and semi-automatic tuning unit
This circuit, very useful when tuning an antenna, placed behind any "TOS meter" allows the ROS to be displayed directly, without the need for end calibration
post 13 Mar 2024
Swr Meter Links →
Rosmetro con accoppiatore a due toroidi
Costituito dai due trasformatori T1 e T2 , ognuno con una spira sui primari, costituita da cavo cossiale, e da N spiresui secondari opportunamente collegati
Setting the SWR of Your Antenna
SWR standing wave ratio, is a measurement of how efficiently your antenna system will radiate the power available from your radio
Simple 2.4 GHz SWR Meter
A simple 2.4 GHz SWR meter which is based around surplus microwave hardware which can be easily found
Simple RF Power
The board shown here has two separate detector circuits on it, and is the one I now use for monitoring both forward and reverse power with a dual directional coupler, and for providing an SWR trip signal
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Costituito dai due trasformatori T1 e T2 , ognuno con una spira sui primari, costituita da cavo cossiale, e da N spiresui secondari opportunamente collegati
SWR standing wave ratio, is a measurement of how efficiently your antenna system will radiate the power available from your radio
A simple 2.4 GHz SWR meter which is based around surplus microwave hardware which can be easily found
The board shown here has two separate detector circuits on it, and is the one I now use for monitoring both forward and reverse power with a dual directional coupler, and for providing an SWR trip signal
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