Hits
Aerials Some thoughts and ideas
The doublet works I found on all bands. A dipole is really a one band aerial, cut for 1/2 λ on the band you want to work on and fed by 50 Ω
post 21 Mar 2024
Wire & Random Antenna Links →
Building a Double Extended Zepp Antenna
Zeppelin double antennas, suitable antenna tuners for their adaptation, extended Zeppelin double antennas and a practical example of the Zeppelin double antenna construction are described
Cage dipoles prismatics
Articles in antenneX, the Prismatic Polyhedron, or Pn, is a derivative of the simple dipole
Coaxial Dipole antenna
The first HF antenna I put up was a coaxial dipole, the concept was developed by MIT. Electrically it is very different to a conventional dipole
Coaxial Folded Dipole Antenna
What if I told you can make a 50 ohm version directly from RG-58 or RG-8 / RG-213 cable?
Dipole Cobra Ultra Lite
A simple antenna cut for 75m so I could test the location
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Zeppelin double antennas, suitable antenna tuners for their adaptation, extended Zeppelin double antennas and a practical example of the Zeppelin double antenna construction are described
Articles in antenneX, the Prismatic Polyhedron, or Pn, is a derivative of the simple dipole
The first HF antenna I put up was a coaxial dipole, the concept was developed by MIT. Electrically it is very different to a conventional dipole
What if I told you can make a 50 ohm version directly from RG-58 or RG-8 / RG-213 cable?
A simple antenna cut for 75m so I could test the location
Antenna switch arduino for icom IC-7300 A solution built around an arduino nano and one of the readily available four relay switching boards
50 MHz preamp Gain 26dB with the BFG135 Preamps for 144 and 430 MHz, for 50 MHz, the BFG135a is a cheap transistor and in my view rather strong. It is not easily damaged by static discharge or RF power. FG connection
30 Volt Computer Power Supply Stack A bonus was that i discovered that these did not need a standby load connected to the supply to keep them running just apply mains power and close the Start lead to ground