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50Mhz high gain antenna and masthead preamplifier


An efficient antenna system is a prerequisite for more successful six metre operation
post 15 Apr 2024
50Mhz high gain antenna and masthead preamplifier

Projects_Homebrew Links

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144 & 432 MHz High IIP3 PA3BIY LNAs
When I first saw the article in , I was very impressed with the data and quality of the construction

1.3 GHz Power Amplifier von
We are developing and manufacturing 1,3GHz Power Amplifier in 4 different technologies

222 Mhz Transverter for the FT-817
The transverter can be configured to work with the Flex-1500 SDR and other transceivers with transverter ports

50Mhz high gain antenna and masthead preamplifier
An efficient antenna system is a prerequisite for more successful six metre operationv

A Motor Drive for your Variometer
Everyone who has set up a low frequency base loaded antenna is aware of the very narrow bandwidth of the antenna system, and the seemingly constant need to retune the antenna


Take off angle of horizontal antenna

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

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

Atu balanced feeder antenna system

Atu balanced feeder antenna system An ATU has the advantage of bringing the feeder-antenna system to resonance, act as a band pass filter both on receive and transmit and a low SWR