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2m Antenna Preamplifier Vorverstaerker
With a gas-fet CF300, and switchable gain between 14 and 24 dBD, Noise figure better than 0.9dB, Continuity damping better than 0.2 dB, Transmittable power 750 W PEP to 2 meters with these prinelais, Material costs about 240 DM
post 30 Mar 2024
Antenna for UHF VHF Links →
5/8 vertical antenna for 2 mt
Formed by 10 turns of 1 mm copper spaced 1mm
6 Elements VHF Yagi antenna
A 6 elements VHF Yagi "homebrew" antenna designed with YAGIMAX 3, with excellent results on local and satellites contacts
70 cm vertical antenna
Stylus length 427mm, coil 5 turns, with 4 radials 163mm
900 MHz 7 Element Delight Yagi Antenna
The T-Match eeding a Balanced Dipole. A suitable 4:1 balun is used in conjunction with the T-Match to perform this function
155
Formed by 10 turns of 1 mm copper spaced 1mm
A 6 elements VHF Yagi "homebrew" antenna designed with YAGIMAX 3, with excellent results on local and satellites contacts
Stylus length 427mm, coil 5 turns, with 4 radials 163mm
The T-Match eeding a Balanced Dipole. A suitable 4:1 balun is used in conjunction with the T-Match to perform this function
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
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