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Homebrew 70cm Quad Antenna
a full wavelength in the 70cm band means; a 70cm 27.6 inches long antenna! In a quad this means that every side is 17.5cm 6.9 inches long, almost nothing
post 17 May 2024
Satellite Antenna Links →
AO-40 Satellite Station
I recently made my first SSTV contact on AO-40 with JA5CU/1
Building a Lindenblad Antenna for 137MHz
I like Lindenblads because they're easy, cheap, robust, and good performers
Building my Eggbeater II Omni LEO Antennas
The loops should be built with # 8 AWG wire and the reflectors should be increased to about 1/4 diameter
Constructing a Cardboard-box Antenna
Choose good sturdy cardboard or other material. Cardboard is actually one of the best choices for antennas because it is very light
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I recently made my first SSTV contact on AO-40 with JA5CU/1
I like Lindenblads because they're easy, cheap, robust, and good performers
The loops should be built with # 8 AWG wire and the reflectors should be increased to about 1/4 diameter
Choose good sturdy cardboard or other material. Cardboard is actually one of the best choices for antennas because it is very light
Linear loaded short dipole 21Mhz For my amateur radio activities on the HF bands I only have a 3.6 m wide balcony available for antennas. After some study I decided to experiment with a shortened dipole for the 15 m band
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
A simple SWR Meter is to be used at HF An SWR meter provides information about how well matched is your antenna with the transmitter and how well power is being radiated